Code for acceptance of engineering installation for mechanical equipment of rolling mill

Transcription

1 Translated English of Chinese Standard: GB GB UDC NATIONAL STANDARD OF THE PEOPLE S REPUBLIC OF CHINA P GB Code for acceptance of engineering installation for mechanical equipment of rolling mill 轧机机械设备工程安装验收规范 Issued on: September 06, 2006 Implemented on: April 01, 2007 Issued by: Ministry of Housing and Urban-Rural Development of the People s Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (AQSIQ). Page 1 of 183

2 NATIONAL STANDARD OF THE PEOPLE S REPUBLIC OF CHINA Code for acceptance of engineering installation for mechanical equipment of rolling mill GB Chief editorial department: China Metallurgical Construction Association Approval department: Ministry of Housing and Urban-Rural Development of the People s Republic of China Enforcement date: April 1, 2007 China Planning Press 2007 Beijing Page 2 of 183

3 Foreword This Code is organized by China Metallurgical Construction Association and specifically prepared by China Twentieth Metallurgical Construction Company, jointly with other organizations concerned according to the requirements in Notice on Printing and Distributing Engineering Construction Standard Specifications Preparation and Revision Plan (Second Batch) for 2005 (Jiao Biao Han [2005] No.124). In preparation process, specification preparation group studied the relevant existing national laws, regulations and standards, made an investigation, summed up experience on quality acceptance of engineering installation for mechanical equipment of rolling mill, conducted repeated revisions and discussions for provisions of the Code, extensively solicited opinions of relevant organizations and experts and finalized it after review. This Code is divided into 15 chapters, including general principles, basic regulations, foundation bolt and base plate, equipment and material approaching, installation works of host rolling mill column equipment, installation works of shearing machine, installation works of recoiling machine uncoiling machine, installation works of roller way, installation works of cooling bed, installation works of rolled products transportation equipment, installation works of overturn and transfer equipment, installation works of straightening machine, installation works of looping equipment, installation works of heating furnace, installation works of other devices of rolling mill as well as 4 annexes. Clauses of chapter 3 Equipment foundation, foundation bolt and base plate and chapter 4 equipment and material approaching involve sub-divisional works and are quality control elements that sub-divisional works have common character, so it is listed in a separate chapter. Boldface clauses in this Code are mandatory and must be strictly enforced. Ministry of Construction is in charge of this Code and responsible for interpretation of mandatory provisions of this Code; China Twentieth Metallurgical Construction Company is responsible for interpretation of specific technical contents. In order to improve quality of the Code, please try to sum up experience and accumulate data during implementation of this Code and feed relevant opinions and suggestions back to technology department of China Twentieth Metallurgical Construction Company (address: No. 777, Pangu Road, Baoshan District, Shanghai Postal code: , jishubu-20mcc@126.com) at any time for reference in future revision. Chief preparation organization, organizations participating in preparation and main drafters: Chief preparation organization: China Twentieth Metallurgical Construction Company Organizations participating in preparation: Metallurgical Industry Engineering Quality Supervision Station Baosteel Supervision Station China First Metallurgical Construction Company Page 4 of 183

4 Table of Contents 1 General Principles Basic Regulations Equipment Foundation, Foundation Bolt and Base Plate General Provisions Equipment Foundation Foundation Bolt Base Plate Equipment and Material Approaching General Provisions Equipment Installation Works of Rolling Mill Host Column Equipment General Provisions Rolling Mill Base Installation Rolling Mill Rack Installation Roller Adjustment Device Installation Transmission Gear Installation of Rolling Mill Mill Roll Changing Device Installation Test Run of Rolling Mill Host Column Equipment Installation Works of Shearing Machine General Provisions Shearing Machine Foundation Installation Billet Shearing Machine Rack Installation Billet Shearing Machine Blade Changing Device Installation Transmission Reduction Gear Installation Flying Shear Rack Installation Steel Plate Shearing Machine Installation Test Run of Shearing Machine Installation Works of Coiling Machine and Uncoiling Machine General Provisions Installation of Cold-Rolled Strip Steel Coiling Machine and Uncoiling Machine Installation of Cold-Rolled Dual-Drum Rotary Strip Steel Coiling Machine Installation Hot-rolled Strip Steep Rolling Machine and Uncoiling Machine Installation Test Rum of Coiling Machine and Uncoiling Machine Auxiliary Equipment Installation of Coiling Machine and Uncoiling Machine Test Run of Coiling Machine and Uncoiling Machine Auxiliary Equipment Track Installation Works General Provisions Installation of centralized drive roller table Installation of Single Drive Roller Table Installation of Lifting, Moving and Swing Roller Tables Page 6 of 183

5 8.5 Test Run of Roller Table Special Roller Installation Test Run of Special Roller Cooling Bed Installation Works General Provisions Rotary Stepping Rack Cooling Bed Test Run of Rotary Stepping Rack Cooling Bed Installation of Chained and Rope Hauling Machine Cooling Bed Test Run of Chained and Rope Hauling Machine Cooling Bed Installation of Riding Wheel Ramp Stepping Cooling Bed Test Run of Riding Wheel Ramp Stepping Cooling Bed Body Rolled Cooling Rack Installation Rolled Products Transport Equipment Installation Works General Provisions Stepping Beam Transfer Machine Installation Test Run of Stepping Beam Transfer Machine Installation of Steel Coil Chained Conveyor Test Run of Steel coil Chained Conveyor Double Chained Scraper Conveyor Installation Test Run of Double-Chained Scraper Conveyor Installation of Spiral Pipe Conveyor Test Run of Spiral Pipe Conveyor Ingot Vehicle Installation Test Run of Ingot Vehicle Installation of Steel Coil Transport Trolley Test Run of Coil Transport Trolley Tipping and Transfer Equipment Installation Work General Provisions Manipulator Installation Test Run of Manipulator Installation of Rack-Type Pusher and Discharge Machine Test run of rack-type pusher and discharge machine Installation of long-stroke charge machine Test run of long-stroke charge machine Installation of horizontal acquiring (feeding) device of slender mill bar Test run of horizontal acquiring (feeding) device of slender mill bar Installation of turnover device Test run of turnover devices Installation of revolving platform Test run of revolving platform Installation of sheet piler Test run of sheet piler Installation engineering of straightener General provisions Installation of gag straightener Page 7 of 183

6 12.3 Installation of roll straightener Installation of tension straightener Installation of cross-roll straightener Test run of straightener Installation engineering of looping device General provisions Structure installation of looping steel Installation of looping car track Installation of swing gate Installation engineering of looping car Installation of looping band steel carrier roller and carrier roller car Installation of looping winch Test run of looping devices Installation engineering of heating furnace General provisions Installation of stepping heating furnace Installation of annular heating furnace Installation of band steel continuous-type annealing furnace Installation of roller-bottom heating furnace Test run of heating furnace Installation engineering of other devices of rolling mill General provisions Installation of sawing machine Test run of sawing machine Installation of shear gauge Test run of shear gauge Installation of printer Test run of printer Installation of weighing machine Test run of weighing machine Installation of bundling machine Test run of bundling machine Installation of automatic band steel welding machine Test run of automatic band steel welding machine Installation of heat coil box Test run of heat coil box Annex A Quality acceptance record of sub-divisional work of the rolling mill mechanical equipment project installation Annex B Quality acceptance record of sub-divisional work of the rolling mill mechanical equipment project installation Annex C Quality acceptance record of organization s project of rolling mill mechanical equipment project installation Annex D Record of test run of equipment without load Explanation of the wording in this Code Page 8 of 183

7 1 General Principles In order to strengthen engineering installation quality management of rolling mill, unify inspection and acceptance of engineering and installation for mechanical equipment of rolling mill and ensure engineering quality, this Code is hereby developed This Code applies to quality acceptance of engineering installation for new and renovated mechanical equipment of rolling mill Engineering technical document and contract adopted in engineering installation for mechanical equipment of rolling mill shall not be lower than the specification in this Code Besides conforming to provisions of this Code, quality acceptance of engineering installation for mechanical equipment of rolling mill shall also conform to the provisions of relevant existing national standard. Page 9 of 183

8 2 Basic Regulations Installation and construction-organization of mechanical equipment of rolling mill shall have appropriate engineering construction qualification; construction site shall have appropriate construction technical standard, sound quality management system, quality control and inspection system as well as construction organization design, construction scheme, job design and other technical documents that are approved by technical director of project Revision of construction drawing must be subject to design change notice or technical verification certificate of design-organization Quality inspection and acceptance of engineering installation for mechanical equipment of rolling mill must through measuring instrument that passes metrological verification and calibration Welders for engineering installation for mechanical equipment of rolling mill must take exam and obtain a certificate of qualification and conduct welding for qualified items in approval scope Engineering installation for mechanical equipment of rolling mill shall follow required procedures; there shall be handing over inspection between related types of professional work to form a record; working procedures of the profession shall follow construction technical standard for quality control; inspection shall be carried out to form a record each time after a working procedure is completed. The construction shall not be continued if previous working procedure is not inspected and approved Second grouting and other concealed works of equipment in engineering installation of mechanical equipment of rolling mill shall be inspected for acceptance by the organization concerned before concealing that is notified by construction-organization; acceptance document shall also be formed Quality acceptance of engineering installation for mechanical equipment of rolling mill shall be conducted based on sub-divisional work, partitioned project and organization s project. Division of partitioned project and sub-divisional work better follows the provisions in table 2.0.7; organization s project may be divided based on process system or production line. For large scaled production lines with a large number equipment, division of organization s project may also be based on entrance section, technology section and exit section. Table Division of portioned projects and sub-divisional works of mechanical equipment of rolling mill No. Name of Partitioned Project Name of Sub-divisional Work 1 Engineering installation of mechanical equipment in entrance Walking beam transfer machine, steel coil transport machine, uncoiling machine, roller straightening Page 10 of 183

9 section of continuous annealing line machine, shearing machine, cropping conveyor, welding machine, alkali leaching tank, electrolytic rinse tank, scrubbing tank, rinsing tank, hot air dryer, correction roller, tension roller, guide roller, entry loop, jump roller, etc. 8 Engineering installation of mechanical equipment in furnace section of continuous annealing line Steel structure of furnace, furnace shell, furnace roller, guide roller, correction roller, bellow, water cooling tank, etc. Continued table No. Name of Partitioned Project Name of Sub-divisional Work Exit loop, correction roller, tension roller, dance roll, 9 Engineering installation of mechanical equipment in entrance section of continuous annealing line temper mill, stretcher leveler, trimming machine, cropping conveyor, thickness gauge, oiling machine, shearing machine, coiling machine, magnetic belt conveyor, wrapper, steel coil transport trolley, stepping beam transfer machine, etc. Steel coil transport trolley, uncoiling machine, pinch roll, Engineering installation of mechanical equipment in entrance section of hot dip galvanizing line Engineering installation of mechanical equipment in furnace section of hot dip galvanizing line Engineering installation of mechanical equipment in exit section of hot dip galvanizing line straightening machine, shearing machine, welding machine, alkali leaching tank, electrolytic rinse tank, scrubbing tank, rinsing tank, hot air dryer, alignment guiding device, tension roller, correction roller, guide roller, entry loop, etc. Furnace shell, steel structure of furnace, furnace roller, guide roller, correction roller, zinc port, sinking roll, alloying furnace, air bellow, water cooling tank, etc. Outlet loop, tension roller, correction roller, guide roller, temper mill, printing machine, oiling machine, shearing machine, pinch roll, coiling machine, belt delivery conveyor, wrapper, steel coil transport trolley, bundling Page 12 of 183

10 production line etc. Rolling mill base, rack, rolling mill transmission gear, rolling mill rod changing device, etc. (divided based on number sequence of rolling machine), crop transport 26 Engineering installation of blooming breakdown mill machine unit machine, ingot vehicle, rotary table, manipulator, tilting gear, pushing device, piling platform, hot billet trolley, various roller tables, steel ingot weighing machine, steel ingot weighing machine, sizing machine, billet printing machine, billet cutting machine (base, rack, transmission reduction gear, blade changing device), etc. Continued table No. Name of Partitioned Project Name of Sub-divisional Work 27 Rolling mill base, rack, rolling mill transmission gear, mill Engineering installation of blooming tandem mill unit roller changing device, etc. (divided based on number sequence of mill), tilting gear, flying shear, hot saw, shear gauge, printer, cropping conveyor, adjustable end stop, various roller ways, etc. 28 Engineering installation of blooming billet cooling and cleaning machine unit 29 Engineering installation of blooming square and round billet cooler unit Billet water-cooling chained transfer cooling bed, chained transfer machine, billet tipping machine, cross trolley, various roller ways, etc. Stepping rack cooling bed, four-link pushing device, mill bar separation device, mill bar removal device, adjustable end stop, chained conveyor, various roller tables, etc. Note: 1 Electro-galvanizing, coating, horizontal shearing, longitudinal shearing, recoiling and stretch straightening and other units of cold rolling mill may be applied mechanically based on similar partitioned project and sub-divisional work and will no longer be listed separately. 2 Bars, wire rods, profiles, beams and other works may be applied mechanically based on similar structure and will no longer be listed separately Acceptance of engineering quality of sub-divisional works shall meet following Page 15 of 183

11 out of nut or flush to nut; exposed threads shall be free of damage; except construction reason, bolt screwing directions shall be consistent. 2 Sealing conditions: No serious oil spill, water leakage or air leakage phenomena. 3 Pipe laying: reasonable layout, neat arrangement. 4 Sound insulation and thermal insulation material laying: uniform layer thickness, firm binding, smooth surface. 5 Oil paint brushing: uniform coating, free of missing coating, peeling, obvious wrinkled skin and air bubbles, basically consistent color. 6 Walkway, ladders, railings: fixed firmly, without obvious visual defects. 7 Welding line: Weld marks are uniform; welding slag and splashes are basically cleaned up. 8 Incision: free of slag. 9 Finished product protection: Equipment has no defects; exposed machined surface is well protected. 10 Civilized construction: Construction site is orderly managed; there is no construction debris around equipment. At least 10 sites shall be randomly inspected for above items Quality acceptance of engineering installation for mechanical equipment of rolling mill shall conform to following provisions: 1 Quality acceptance record of sub-divisional works shall be based on annex A to this Code. 2 Quality acceptance record of partitioned project shall be based on annex B to this Code. 3 Quality acceptance record of organization s project shall be based on annex C to this Code. 4 Test run record of equipment without load shall be based on annex D to this Code If engineering quality does not meet requirements, it shall be handled timely or reworked and there shall be re-acceptance inspection Acceptance is forbidden if engineering quality does not meet requirements and still cannot meet requirements after handling and rework Quality acceptance of engineering installation for mechanical equipment of rolling mill shall be organized based on following procedures. 1 Acceptance of sub-divisional work shall be organized by supervising engineer (or Page 17 of 183

12 3 Equipment Foundation, Foundation Bolt and Base Plate 3.1 General Provisions This chapter applies to engineering quality acceptance of mechanical equipment foundation of rolling mill as well as foundation bolt and base plate Acceptance inspection of foundation must be carried out before installation of equipment; equipment may not be installed if foundation that does not pass acceptance inspection Foundation of main mechanical equipment of rolling mill shall receive settlement observation and there shall be corresponding record. 3.2 Equipment Foundation I Main-controlled Items Equipment foundation strength must conform to requirements of design technical document. Inspection quantity: full inspection. Inspection method: Inspect foundation handover data Before equipment are in place, it is necessary to draw center target and elevation reference point arrangement plan based on surveying control network according to construction drawing, set center target and elevation reference point according to arrangement plan and measure setting point. Continuous production line and the subject equipment shall have permanent center target and elevation reference point. Inspection quantity: full inspection. Inspection method: Inspect sheet of measurement results; adopt observation inspection. II General Items Axis position of equipment foundation, elevation, size and position of foundation bolt shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB Inspection quantity: full inspection. Inspection method: Check re-inspection record Oil, gravel, gravel, soil, water on surface of equipment foundation and reserved hole of foundation bolt must be cleaned; embedded foot screw and nut shall be well protected. Page 19 of 183

13 Inspection quantity: full inspection. Inspection method: observation inspection. 3.3 Foundation Bolt I Main-controlled Items Specifications and fastening of foundation bolt must conform to requirements of design technical document. Sampling quantity: 20% for random inspection, not less than 4 sites. Inspection method: Check quality conformance document and measure with ruler; check fastening record; hammer nut to inspect. II General Items Oil stain and oxide skin of foundation bolt shall be cleared away; threads shall be coated with an appropriate amount of grease. Inspection quantity: full inspection. Inspection method: Observation inspection Foundation bolt of reserved hole shall be installed vertically; distance between any part and hole wall shall be greater than 15mm; bottom of hole shall not be touched. Inspection quantity: full inspection. Inspection method: observation inspection. 3.4 Base Plate I Main-controlled Items When base plate is set through bed-mortar method, strength of bed-mortar concrete for 48h shall meet design strength of foundation concrete. Inspection quantity: Inspect batch by batch. Inspection method: Check bed-mortar test block test report. II General Items Setting of equipment base plate shall conform to requirements of design technical document or the provisions in General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB Inspection quantity: 20% for random inspection. Page 20 of 183

14 Inspection method: observation inspection, measurement, feeler gauge inspection, base plate tapping When base plate is placed through grinding method, surface of concrete foundation shall become smooth through chipping; contact points of concrete surface and base plate shall be evenly distributed. Inspection quantity: 20% for random inspection. Inspection method: observation inspection. Page 21 of 183

15 5 Installation Works of Rolling Mill Host Column Equipment 5.1 General Provisions This chapter applies to acceptance of engineering quality for mono-rack rolling mill and continuous rolling mill. 5.2 Rolling Mill Base Installation General Items Allowable installation deviation of rolling mill base shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Figure Allowable installation deviation of mill base No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Elevation Install based on reference point Install based on equipment already installed ±0.30mm ± 0.50mm ± 0.10mm ±0.25mm Inspect with level gauge or leveling ruler, inside micrometer Inspect with level gauge or leveling ruler, level and feeler gauge 2 Centerline Install based on main reference point Install based on equipment already installed 0.5mm 0.3mm 1.0 mm 0.5mm Draw steel wire, plumb bob or Draw steel wire, plumb bob or Single base of mill 0.05/ /1000 Inspect with leveling ruler and level 3 Levelness Between two bases of the same mill 0.05/ /1000 Inspect with leveling ruler and level Between two bases of two adjacent continuous mills 0.05/ /1000 Inspect with leveling ruler and level Page 23 of 183

16 1 precise level gauge; 2 leveling ruler; 3 level; 4 piano line; 5 line hammer; 6 inside micrometer; 7 center target; 8 base on inlet side; 9 base on outlet side; A measurement of deviation in direction of rolling line; B measurement of deviation of transverse centerline and parallelism of base on outlet side to centerline of rolling mill; C determination of parallelism between two foundations; D elevation measurement Rolling centerline Figure Schematic diagram of continuous mill foundation measuring method 1 foundation; 2 leveling ruler; 3 level 5.3 Rolling Mill Rack Installation I Main-controlled Items Fastening force of rack fixing bolt must conform to the provisions of design technical document. Inspection quantity: full inspection. Inspection method: Check bolt fastening record Fastening force of rack and connecting bolt or hot charging bolt of upper beam and lower beam shall conform to provisions of design technical document; beam shall be free of skew. Inspection quantity: full inspection. Inspection method: Check bolt fastening record; adopt observation inspection. II General Items Rack fixed bolt shall be installed vertically and fixed reliably; there shall be good contact between nut, washer and base; bolt after fastening shall come out of nut or flush to nut; exposed threads shall be free of damage; except construction reason, bolt screwing directions shall be consistent. Page 25 of 183

17 inside micrometer, earphone or lamplight Inspect vertical Rack window side 0.05/ /1000 suspension line with inside micrometer, earphone or lamplight Direction that widow bottom surface is parallel to rolling 0.05/ /1000 Inspect with level 2 Levelness line Direction that window bottom surface is perpendicular to 0.05/ /1000 Inspect with level rolling line Continued table No. Item Allowable Deviation Grade I Grade II Inspection Method 2 Levelness Bottom surface of two rack 0.10/ /1000 windows Upper frame of upright mill 0.10/ /1000 Inspect with leveling ruler, gauge block and level Inspect with leveling ruler, gauge block and level Draw steel wire and 3 Lateral deviation of centerline of two rack windows 0.20/ /1000 inspect with inside micrometer, earphone or lamplight 4 Rack window is skew in horizontal direction 0.20/ /1000 Inspect steel wire with inside micrometer, earphone or lamplight Draw steel wire, plumb 5 Deviation of rack centerline 0.5mm 1.0mm bob and inspect with steel ruler Page 27 of 183

18 technical document. Inspection quantity: full inspection. Inspection method: Observe for inspection; inspect with a dial indicator Allowable installation deviation of roll adjusting device shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of roll adjusting device No. Item Allowable Deviation Grade I Grade II Inspection Method Suspension line is 1 Speed reduction gear Longitudinal levelness 0.05/ /1000 Horizontal levelness 0.05/ /1000 inspected through inside micrometer, headphone or lamplight Suspension line is inspected through inside micrometer, headphone or lamplight 2 Contact clearance between pressure nut and bore hole end face of rack 70% of periphery is not into; 0.05 mm clearance is allowed locally Inspect with 0.05mm feeler gauge 3 Concentricity of bearings of reduction gears 0.05mm 0.10mm Draw steel wire; inspect with inside micrometer 5.5 Transmission Gear Installation of Rolling Mill General Items During assembly of speed reducer and gear seat, transmission gear backlash, gear tip clearance, tooth meshing contact and axial string momentums of transmission shaft shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB 50231; parts of speed reducer and gear seat shall be properly sealed Gear backlash, gear tip clearance, tooth meshing contact and axial string Page 32 of 183

19 momentums of transmission shaft shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB 50231; parts of speed reducer shall be properly sealed. Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; inspect through coloring, lead extrusion, dial indicator or feeler gauge Contact between semicircular sliding block of universal coupling and jaws plane or flat head plane of jaws shall be uniform; total clearance between semicircular sliding block and flat head shall be within accumulated value range of fit clearances. Inspection quantity: full inspection. Inspection method: Inspect with a feeler gauge There shall be close contact between upper cover of gear seat and upper plane of upper gear shaft bearing seat and local clearance shall not be greater than 0.05mm. Inspection quantity: full inspection. Inspection method: Inspect with a feeler gauge Radial displacement of two axes, tilt of two axes and clearance value of two ends of coupler during coupler assembly shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; use a dial indicator and a feeler gauge for rotation measurement Allowable installation deviation of main reduction gear of rolling mill shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of main reduction gear of rolling mill No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Longitudinal centerline of 0.3mm 0.5mm Draw steel wire, hang plumb bob and Page 33 of 183

20 main reduction gear 2 Horizontal centerline of main reduction gear 0.5 mm 1.0 mm Draw steel wire, hang plumb bob and 3 Elevation of main reduction gear ±0.30mm ±0.50mm Inspect with level gauge or leveling ruler, inside micrometer 4 Longitudinal levelness of main reduction gear 0.05/ /1000 Inspect with leveling ruler and level 5 Horizontal levelness of main reduction gear 0.05/ /1000 Inspect with leveling ruler and level Note: 1 Longitudinal (main transmission direction) centerline of transmission device of rolling mill shall be consistent with main transmission centerline of rolling mill. 2. Longitudinal (main transmission direction) levelness of main reduction gear for integral installation is better measured on journals of both ends or specified reference plane; horizontal levelness is better measured on specified reference plane; longitudinal and horizontal levelness of main reduction gear for integral installation shall be measured upper plane of lower enclosure Allowable installation deviation of rolling mill gear seat shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of rolling mill gear seat No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Longitudinal centerline of pinion housing 0.3 mm 0.5 mm Draw steel wire, hang plumb bob and 2 Horizontal centerline of pinion housing 0.5 mm 1.0 mm Draw steel wire, hang plumb bob and 3 Elevation of pinion housing ±0.30mm ±0.50mm Inspect with level gauge or leveling ruler, inside micrometer 4 Longitudinal levelness of 0.05/ /1000 Inspect with leveling ruler and level Page 34 of 183

21 Inspection method: coloring, lead extrusion method or inspection with a feeler gauge. Joint of two adjacent racks is inspected through tooth block Allowable installation deviation of rack roll changing device shall conform to the provisions of table Inspection quantity: full inspection. Track shall have at least 6 points; perpendicularity of rack shall have at least 8 points; space between guide wheels shall have at least 4 points. Inspection method: See table Table Allowable installation deviation of rack roll changing device No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Deviation of steel rail centerline from rack centerline ±0.3mm ±0.5mm Draw steel wire, hang plumb bob and inspect with steel ruler 2 Difference between steel rail elevation and rack elevation 0.10mm 0.15mm Inspect with leveling ruler, level or feeler gauge 3 High-low difference of two steel rail surfaces in the same cross section 0.20mm 0.30mm Inspect with leveling ruler, level, feeler gauge or level gauge 4 Longitudinal levelness of steel rail 0.50/ /1000 Inspect with level gauge 5 Distance between two steel rails ±0.3tnm ±0.5mm Inspect with model rod or inside micrometer 6 Elevation difference between track on transverse shifting device and built-in roll changing track joint 0.20mm 0.30mm Inspect with leveling ruler and feeler gauge 7 High-low difference between track on transverse shifting device and built-in roll changing track joint 0.10mm 0.15mm Inspect with leveling ruler and feeler gauge 8 Guide wheel spacing mm mm Inspect with inside micrometer 9 Rack perpendicularity 0.10/ /1000 Inspect with level Page 36 of 183

22 7 Deviation of slide way centerline from centerline of rack ±0 3mm ±0.5 mm Draw steel wire, hang plumb bob and inspect with steel ruler 8 Elevation of upper plane of slide way ±0.30mm ±0.50mm Inspect with level gauge 9 Longitudinal levelness of slide way 0.30/ /1000 Inspect with level High-low difference of two slide Inspect with leveling ruler, 10 way planes in the same cross 0.20mm 0.30mm level, feeler gauge or level section gauge 11 Slide way spacing ±0.5 mm ±1.0 mm Inspect with model rod or inside micrometer 12 High-low difference of slide way and joint of built-in roll changing slide way 0.10mm 0.15mm Inspect with leveling ruler and feeler gauge Continued table No. Item Allowable Deviation Grade I Grade II Inspection Method 13 Longitudinal centerline of hydraulic cylinder 0.5mm 1.0mm Draw steel wire, hang plumb bob and inspect with steel ruler 14 Horizontal centerline of hydraulic cylinder 0.5mm 1.0mm Draw steel wire, hang plumb bob and inspect with steel ruler 15 Levelness of hydraulic cylinder 0.10/ /1000 Inspect with level 5.7 Test Run of Rolling Mill Host Column Equipment Test run of rolling mill host column equipment shall conform to following provisions: 1 Construction-organization shall prepare no-load test run scheme before test run of rolling mill host column equipment; test run may start only after chief supervising engineer or project principal of construction-organization. Page 38 of 183

23 2 Installation of host rolling mill column equipment and the accessory devices, pipeline, etc. shall be completed; installation quality records and data shall be completed. Debugging and inspection of hydraulic, lubrication, pneumatic, water, steam, emulsion, electrical and other systems shall be completed and conform to requirements for test run. 3 Required materials, machines and tools, detesting instruments, etc. for test run shall conform to requirements for test run. 4 Security facilities of equipment must be complete and reliable; reaction of limit switch shall be accurate and errorless. 5 Action of clutch and braking device shall be sensitive and reliable. 6 Low-speed screw-down gear and high-speed screw-down gear of rolling mill moves back and forth for 5 to 10 times; high-low limit position is accurate. 7 Main drive motor without load is in test run for 30 min; motor drives reduction gear for test run of 30 min; motor drives reduction gear and gear seat for test run of 30 min; motor drives reduction gear, gear seat and rolling mill for test run for 2 h to 4 h, respectively at speeds of 25%, 50%, 75% and 100% of maximum working speed. Reversible mill runs forward and backward respectively for 1 h to 2 h based on these 4 grades. When several mills are driven by one transmission gear, the second mill may be driven only after the first mill starts test run; the rest shall be done in the same manner, until last mill completes test run. 8 Roll changing device and other equipment move back and forth for 5 to 10 times; stroke, speed and predetermined stop position shall conform to requirements in design technical document. 9 In operation, transmission parts shall move flexibly and stably, without abnormal vibration or noise. 10 Bearing temperature shall be normal. Rolling bearing temperature rise is less than 40 C and maximum temperature is less than 80 C; sliding bearing temperature rise is less than 35 C and maximum temperature is less than 70 C. 11 Fasteners and connectors may not become loose. 12 In test run of region or unit, there are no faults after 3 continuous operation based on design linkage procedures. Inspection method: Observe to inspect; check test run record. Page 39 of 183

24 6 Installation Works of Shearing Machine 6.1 General Provisions This chapter applies to quality acceptance of engineering installation for billet shearing machine, steel plate shearing machine and flying shear. 6.2 Shearing Machine Foundation Installation General Items Allowable deviation of shearing machine chassis installation shall conform to the provisions in table Inspection quantity: full inspection. Inspection method: See table Table Allowable deviation of shearing machine foundation installation No. Item Allowable Deviation Inspection Method 1 Elevation of foundation top surface ±0.50mm 2 Deviation of longitudinal centerline 1.0 mm 3 Deviation of horizontal centerline 1.0 mm Inspect with level gauge or leveling ruler, inside micrometer Draw steel wire, hang plumb bob and Draw steel wire, hang plumb bob and Single foundation 0.10/1000 Inspect with leveling ruler and level 4 Levelness Between two foundations 0.10/1000 Inspect with leveling ruler and level 5 Parallelism to centerline of scissor Side of reference foundation Side between two foundations Draw steel wire and inspect with inside 0.10/1000 micrometer 0.10/1000 Inspect with inside micrometer 6.3 Billet Shearing Machine Rack Installation General Items Page 40 of 183

25 6.5 Transmission Reduction Gear Installation General Items During assembly of reduction gear, the transmission gear backlash, top clearance of tooth, tooth meshing contact area as well as bearing assembly and axial string momentum of bearing shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB 50231; parts of reducing gear shall be properly sealed. Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; inspect through coloring, lead extrusion, dial indicator or feeler gauge Radial displacement of two axes, tilt of two axes and clearance value of two ends of coupler during coupler assembly shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB Sample quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; use a dial indicator and a feeler gauge for rotation measurement Allowable deviation of transmission reduction gear installation shall conform to the provisions in table Inspection quantity: full inspection. Inspection method: See table Table Allowable deviation of transmission reduction gear installation Item No. Allowable Deviation Inspection Method 1 Centerline Deviation from rolling centerline Deviation from shearing machine centerline ±1.0 mm ±0.3mm Draw steel wire, hang plumb bob and Draw steel wire, hang plumb bob and 2 Elevation ±0.50mm Inspect with level gauge or leveling ruler, inside micrometer 3 Levelness 0.10/1000 Inspect with level and leveling ruler Page 43 of 183

26 6.7.2 Allowable end face run-out value of shear blade of disk shearing machine shall conform to the provisions of design technical document; if design technical document does not contain such provisions, it shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: Inspect with feeler gauge. Table Allowable end face run-out value of shear blade (mm) Strip Thickness End Face Run-out , ~0.03 > ~ Allowable installation deviation of oblique blade steel plate shearing machine shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of oblique blade steel plate shearing machine Item No. Allowable Deviation Inspection Method 1 Elevation ±1.00mm Inspect with level gauge or leveling ruler, inside micrometer 2 Deviation of longitudinal and horizontal centerlines 1.00mm Draw steel wire, hang plumb bob and 3 Levelness (measured at foundation or horizontal shear blade) 0.10/1000 Inspect with level and leveling ruler 4 Parallelism of shear blade to pinch roll 0.10/1000 Inspect with inside micrometer Allowable installation deviation of disk steel plate shearing machine shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Page 45 of 183

27 of movable shear in vertical plane Hydraulic 0.03/1000 Inspect with level Parallelism of guide rail of Non-hydraulic 0.05/1000 Inspect with level and leveling ruler 7 movable shear in vertical plane Hydraulic 0.03/1000 Inspect with level and leveling ruler 8 Parallelism of shear blade to centerline of unit 0.10/1000 Draw steel wire and inspect with inside micrometer 6.8 Test Run of Shearing Machine Test run of shearing machine shall conform to following provisions: 1 Construction-organization shall prepare no-load test run scheme before test run of shearing machine; test run may start only after chief supervising engineer or project principal of construction-organization. 2 Installation of shearing machine and accessory devices, pipeline, etc. shall be completed; installation quality records and data shall be completed. Debugging and inspection of hydraulic, lubrication, pneumatic, electrical and other systems shall be completed and conform to requirements for test run. 3 Required materials, machines and tools, detesting instruments, etc. for test run shall conform to requirements for test run. 4 Security facilities of equipment must be complete and reliable; action of limit switch shall be accurate and errorless. 5 Action of clutch and braking device shall be sensitive and reliable. 6 Stroke and speed of upper hydraulic cylinder and pneumatic cylinder of equipment shall conform to provisions of design technical document and move back and forth for 5 to 10 times. 7 Shearing machine is in continuous test run for 2 to 4 h. 8 In operation, transmission parts shall move flexibly and stably, without abnormal vibration or noise. 9 Bearing temperature shall be normal. Rolling bearing temperature rise is less than 40 C and maximum temperature is less than 80 C; sliding bearing temperature rise is less than 35 C and maximum temperature is less than 70 C. 10 Fasteners and connectors may not become loose Page 47 of 183

28 7 Installation Works of Coiling Machine and Uncoiling Machine 7.1 General Provisions This chapter applies to quality acceptance of engineering installation of cold-rolled strip steel coiling machine and uncoiling machine and hot-rolled strip steel coiling machine and uncoiling machine. 7.2 Installation of Cold-Rolled Strip Steel Coiling Machine and Uncoiling Machine General Items Radial displacement of two axes, tilt of two axes and clearance value of two ends of coupler during coupler assembly shall conform to requirements in design technical document or existing national standard General Code for Construction and Acceptance of Mechanical Equipment Installation Engineering GB Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; use a dial indicator and a feeler gauge for rotation measurement Clearance between host of mobile uncoiling machine and uncoiling machine and base slide way shall conform to the provisions of design technical document. Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; inspect with a feeler gauge Allowable installation deviation of cold-rolled strip steel coiling machine and uncoiling machine shall conform to the provisions of table mm. Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of cold-rolled strip steel coiling machine and uncoiling machine No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Deviation of longitudinal centerline 1.0mm 1.5mm Draw steel wire, hang plumb bob and 2 Deviation of horizontal centerline 0.5mm 1.0mm Draw steel wire, hang plumb bob and Page 49 of 183

29 Inspection quantity: 30% for random inspection, not less than 1 set. Inspection method: Inspect installation quality record; use a dial indicator and a feeler gauge for rotation measurement Allowable installation deviation of cold-rolled rotary dual drum strip steel coiling machine Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of cold-rolled rotary dual drum strip steel coiling machine No. Item Allowable Deviation Inspection Method Deviation of longitudinal centerline 1.0mm Draw steel wire, hang plumb bob and Deviation of horizontal centerline 0.5mm Draw steel wire, hang plumb bob and 1 Foundation of rotary box Elevation ±0.50mm Inspect with level gauge or leveling ruler, inside micrometer support roller Longitudinal and horizontal levelness of single foundation 0.05/1000 Inspect with level Levelness of two foundations 0.05/1000 Inspect with leveling ruler and level Parallelism of two foundations (full length) 1.00mm Inspect with inside micrometer Deviation of longitudinal centerline 1.0mm Draw steel wire, hang plumb bob and Main gearbox Deviation of horizontal centerline 0.5mm Draw steel wire, hang plumb bob and 2 and rotary box Elevation Levelness Inspect with level gauge or leveling ruler, ±0.50mm inside micrometer 0.05/1000 Inspect with leveling ruler and level Concentricity of hollow shaft 0.05mm Draw steel wire and inspect with inside Page 51 of 183

30 Table Allowable installation deviation of hot-rolled coiling machine and uncoiling machine No. Item Allowable Deviation Grade I Grade II Inspection Method 1 Deviation of longitudinal centerline 0.5mm 1.0 mm Draw steel wire, hang plumb bob and 2 Deviation of horizontal centerline 0.5mm 1.0 mm Draw steel wire, hang plumb bob and 3 Elevation ±0.30mm ±0.50mm Inspect with level gauge or leveling ruler, inside micrometer 4 Levelness 0.05/ /1000 Inspect with leveling ruler and level 5 Perpendicularity of coiling drum to centerline of unit 0.05/ /1000 Draw steel wire and inspect with rocker arm and inside micrometer Note: 1 Accuracy of grade I applies to uncoiling machine and coiling machine that uncoiling and coiling speed is greater than 10m/s; accuracy of grade II applies to uncoiling machine and coiling machine that uncoiling and coiling speed is less than 10m/s. 2 If uncoiling and coiling machine host has a mobile structure, installation positioning shall take base (or base slide way) as a reference and review shall be conducted on coiling drum. 3 On levelness of uncoiling machine and coiling machine, cantilever end of coiling drum shall be higher than drive end. 4 Verticality of coiling drum of uncoiling machine to centerline of unit shall be that cantilever end of coiling drum deviates from discharge direction; verticality of coiling drum of coiling machine to centerline of machine unit shall be that cantilever end of coiling drum deviates from material incoming direction Allowable installation deviation of strip steel hot continuous rolled down coiler shall conform to the provisions of table Inspection quantity: full inspection. Inspection method: See table Table Allowable installation deviation of strip steel hot continuous rolled down coiler No. Item Allowable Deviation Inspection Method 1 Deviation of longitudinal centerline 0.5mm Draw steel wire, hang plumb bob Page 53 of 183