A revolution in stainless steel turning

Transcription

1 A revolution in stainless steel turning Excellent resistance to notch wear and with good burr control. Long tool life achieved due to high plastic deformation resistance. B201E

2 ISO insert Series for Stainless Steel Turning CVD coated grade / PVD coated grade az ax ac av zsmooth cutting edge Prevents welding xthin layer, Nano-texture Al2O3 Controls abnormal damage ctough, Nano-texture TiCN High wear resistance vspecial carbide substrate Plastic deformation resistance Chipping resistance az ax z(al, Ti)N coating Prevents welding xspecial carbide substrate Improved fracture resistance Thermal shock resistance Application range Concept of grade ISO M01 M10 M20 M30 M40 Stainless Steel Wear resistance US7020 Unstable Cutting New CVD grade Current CVD grade New PVD grade US735 Stability of the cutting edge 1

3 Chipbreaker system for stainless steel turning 7.0 Chip control range Depth of cut (mm) Feed rate (mm) Main chipbreaker for light cutting Excellent burr control duces the incidence of burrs drastically because the sharpness properties and cutting edge strength are optimized with different rake angles. Nose Flank Sub breaker Sub breaker of the main and chip breaker. Excellent notch resistance for light to medium cutting. Nose for medium cutting Excellent resistance to plastic deformation As a result of obtaining the optimum land geometry by simulation analysis technology, the plastic deformation of the insert corner was controlled and achieved long tool life. for rough cutting Excellent fracture resistance By optimizing the land angle and honing geometry, high cutting edge stability is achieved during interrupted machining. 6 Nose 10 Flank 3 Nose 6 Flank Flank 15 Multi-Assist breaker Suitable for medium cutting range Nose Flank 6 2

4 Cutting performance a Wear resistance comparison Tool life comparison was made at a 1mm depth of cut where burrs were most likely to occur. Long tool life was achieved. grade with the chipbreaker demonstrated good burr control and gave long tool life. + Conventional A Conventional B Flank wear (mm) Conventional B Conventional A Cutting conditions Inserts : CNMG oo Work piece : X5CrNi189 (170HB) Cutting speed : 280m/min Feed rate : 0.2mm/rev Depth of cut : 1.0mm Coolant : Wet cutting Cutting time (min) a Wear resistance comparison Conventional 0.30 Flank wear (mm) Cutting time (min) Cutting conditions Inserts : CNMG oo Work piece : X5CrNi189 Cutting speed : 180m/min Feed rate : 0.35mm/rev Depth of cut : 4.0mm Coolant : Wet cutting a Fracture resistance comparison Fracture resistance was tested by turning a component with a slot. (Impact frequency: 150/pass) + Conventional Cutting conditions Inserts : CNMG oo Work piece : X5CrNi189 Cutting speed : 120m/min Feed rate : 0.3mm/rev Depth of cut : 2.0mm Coolant : Wet cutting Notch wear and large welding 3

5 a Fracture resistance comparison Fracture resistance was tested by turning a component with a slot. (Impact frequency: 300/pass) + Conventional CVD grade Chipping Cutting conditions Inserts : CNMG oo Work piece : X5CrNi189 Cutting speed : 120m/min Feed rate : 0.15mm/rev Depth of cut : 1.5mm Coolant : Wet cutting Optimum selection of inserts for turning Main chipbreaker system M Stainless Steel Negative insert for external turning ycutting CONDITIONS Continuous Cutting Constant Depth of Cut Pre-machined Secure Clamped Component Cutting General Cutting ycutting AREA L M R Unstable Cutting Heavy Interrupted Cutting Irregular Depth of Cut Low Clamping Rigidity Cutting 4

6 ISO insert Series for Stainless Steel Turning INSERTS a Negative Inserts (With hole) Shape Order Number Stock Dimensions (mm) D2 CNMG a a a a a a a a a Geometry CNMG a a a a a a a a a a a a a a a a a a a a a a a a a a a CNMG a a a a a a a a a a a a a a a a a a a a a CNMG a a a a a a a a a CNMG a a a a a a DNMG a a a a a a a a a a a a a a a a a a a a a a a a DNMG a a a a a a a a a a a a a : Inventory maintained.

7 Stock Dimensions (mm) Shape Order Number D2 Geometry DNMG a a a a a a a a a a a a a a a a a a DNMG a a a a a a a a a a a a a a a a a a DNMG a a a a a a a a a a a a SNMG a a a a a a SNMG a a a a a a a a a a a a a a a a a a a a a a a a SNMG a a a a a a a a a a a a a a a a a a a a a SNMG a a a a a a a a a

8 ISO insert Series for Stainless Steel Turning INSERTS a Negative Inserts (With hole) Shape Order Number Stock Dimensions (mm) D2 SNMG a a a a a a Geometry TNMG a a a a a a a a a TNMG a a a a a a a a a a a a a a a TNMG a a a a a a a a a a a a a a a TNMG a a a a a a a a a a a a a a a TNMG a a a a a a a a a a VNMG a a a a a a VNMG a a a a : Inventory maintained.

9 Stock Dimensions (mm) Shape Order Number D2 Geometry VNMG a a a a a a VNMG a a a a WNMG a a a a a a a a a a a a WNMG a a a a a a a a a a a a WNMG a a a a a a a a a a a a WNMG a a a a a a a a a a a a a a a WNMG a a a a a a a a a a

10 ISO insert Series for Stainless Steel Turning y Negative Inserts (External turning tools) M CUTTING CONDITIONS Work Material Hardness Cutting Conditions Cutting Range Breaker Grade Cutting Speed (m/min) Feed Rate (mm/rev) Depth of Cut (mm) Austenitic Stainless Steel (X5CrNi189, X5CrNiMo1810) 180HB General Cutting Unstable Cutting Duplex Stainless Steel (X3CrNiCu1894) 280HB General Cutting Unstable Cutting Ferritic and Martensitic Stainless Steels (X12Cr13, X17CrNi162) 180HB General Cutting Unstable Cutting Hardened Stainless Steels (17-4PH, PH, ) 350HB General Cutting Unstable Cutting

11 TOOL LIFE y Cutting speed affects on tool life. Mitsubishi's suggests cutting speeds for minute tool life and is based on Taylor's equation (lationship for tool grade, cutting conditions and tool life). When a different tool life is required, obtain the coefficient values from the charts below. Multiply the coefficient values by the cutting speed to calculate a new cutting speed. y Negative Inserts (External turning tools) M CUTTING CONDITIONS Work Material Hardness Cutting Conditions Cutting Range Breaker Grade Cutting Speed (m/min) Feed Rate (mm/rev) Depth of Cut (mm) Austenitic Stainless Steel (X5CrNi189, X5CrNiMo1810) 180HB General Cutting Unstable Cutting M Grade (Stainless Steel) cutting speed coefficient values. Tool life Grade 15min 30min 45min 60min 90min (ex.) General cutting of Austenitic Stainless Steel (200HB) The 1st recommendation : Indexable inserts : CNMG commended cutting speed : Vc=195m/min (Tool life = 15min) (Tool life : Vc145m/min = 90min) Tool life required by the customer : 30min Vc = Vc175m/min y Hardness of the work material Hardness of the work material also affects tool life. Mitsubishi's suggests cutting speed variations when material hardness differs. Obtain the suitable coefficient value for each type of work material from the chart below. Multiply the coefficient value by the recommended cutting speed of the grade used to calculate a new cutting speed. Work Material Hardness Soft Hardness of Workpiece HB Hard Austenitic Stainless Steel Duplex Stainless Steel Ferritic and Martensitic Stainless Steels Hardened Stainless Steels 180HB HB HB HB (ex.) Austenitic Stainless Steel (200HB) Vc=175m/min x 0.91 = Vc159m/min 10

12 ISO insert Series for Stainless Steel Turning APPLICATION EXAMPLES Insert WNMG CNMG CNMG (G-X6CrNi189 ) Duplex (X3CrNiMo27-5-2) (X10CrNiTi189) Work Piece Cutting Conditions Cutting Speed (m/min) Feed Rate (mm/rev) Depth of Cut (mm) Coolant Wet Wet Wet Competitor s Competitor s Competitor s sults 5 pieces machined 10 pieces machined 8 pieces machined 8 pieces machined 4 pieces machined 8 pieces machined Insert CNMG WNMG CNMG (X1NiCrMoCuN ) (X5CrNiMo1810) (X5CrNi189) Work Piece Cutting Conditions Cutting Speed (m/min) Feed Rate (mm/rev) Depth of Cut (mm) Coolant Wet Wet Wet Competitor s Competitor s Competitor s sults 12 pieces machined 15 pieces machined 60 pieces machined 60 pieces machined 5 pieces machined 5 pieces machined C HARTMETALL GmbH Comeniusstr. 2, Meerbusch, Germany Tel Fax admin@mmchg.de MITSUBISHI TERIALS ESPAÑA, S.A. Calle Emperador 2, Museros/Valencia, Spain Tel Fax mme@mmevalencia.com C HARDMETAL RUSSIA OOO LTD. UL. Bolschaja Semenovskaya, 11, bld 5, Moscow, Russia Tel Fax info@mmc-carbide.ru C HARDMETAL U.K. LTD. Mitsubishi House, Galena Close, Tamworth, Staffs. B77 4AS, U.K. Tel Fax sales@mitsubishicarbide.co.uk C ITALIA S.r.l. V.le Delle Industrie 2, Milano, Italy Tel Fax info@mmc-italia.it C METAL FRANCE s.a.r.l. 6, Rue Jacques Monod, Orsay, France Tel Fax mmfsales@mmc-metal-france.fr C HARDMETAL POLAND SP. z o.o. Al..Armii Krajowej 61, Wroclaw, Poland Tel Fax sales@mitsubishicarbide.com.pl (6IDD) Printed in Germany