DEBURRER. for slabs, Blooms & billets

Transcription

1 DEBURRER for slabs, Blooms & billets en

2 - Deburrer for slabs, blooms & billets After the casting process the continuous strand is cut into shorter pieces. The cutting operation is done with gas torch cutting. A waste by-product of this cutting process is known as burrs or beards which can be found on the underside of the slab, bloom or billet at the torch cut positions. The in-line rotary hammer type deburring machine is designed for removing burrs from continous casting products (slab, bloom, billet) caused by torch cutting. The deburring process is executed during transportation on roller table without stopping the product. These burrs or beards can cause considerable problems in downstream operations. To eliminate these problems rotary deburring equipment can be installed in-between two of the roller-table rolls and will carry out in line deburring at roller table speed. The complete equipment is manufactured using standardised modules, which result in high reliability and low maintenance of equipment and specially selected electrical and mechanical parts that are designed, well tested and proven to function in heavy industries. Your advantages Low running and maintenance costs The cost of deburring is insignificant, but the saving potential is very high. No consumables, except wear of the hammer (insignificant) quality improvement Significant quality improvement of rolled products (no roll-in of burrs) Minimisation of damages Burr free slabs, blooms and billets minimize the damages/wear to roller table rolls Burr free slabs, blooms and billets minimize the damages/wear at reheating furnaces and rolling mill equipment 2 NUMTEC

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4 deburrer slabs The in-line removal of burrs is carried out by a series of symmetrical (double edged) hammers made of forged alloy steel. These hammers hang loosely on six axles positioned around the deburrer roll. When the roll rotates the centrifugal force causes the hammers to extend to their deburring diameter. Due to the roll speed and the mass of the hammers they hit the burrs several times at high speed before the burr is removed from the product and guided via chutes into a burr removal system. The Deburring system consists of a roll with axles and hammers, bearing blocks, hydraulic vertical slide, sensors and electric rotor-drive. The machine is controlled by a PLC type Siemens S7 with standard interfaces to steel plant equipment and fault diagnostic system. OPTIONS Laser measuring system with position control Burr collection system - Residual burr detection Drive Control cabinet drive unit machine cover sensor unit burr funnel, chute 4 NUMTEC

5 The deburring rotor is made in form of a shaft with split flanges, welded in offset position along its length. In these flanges the axles, on which movable hammers are suspended, are carried. - bracketfixed bearing rotor with hammer motor unit bracketloose bearing cardan shaft cover The deburring rotor is covered with a sturdy cover, serving three functions: Shielding against splintering burrs Insulation of noise Collection of burrs and conveying them to a scrap container via a chute Inside the cover six chain curtains, arranged in 3/3 at entry/exit side, are provided for best possible sealing of the cover during the deburring process. Attachment points on top of the machine cover are provided for assembling and disassembling of the machine cover with a crane. - NUMTEC 5

6 - deburrer BloomS/Billets The in-line removal of burrs is carried out by a series of symmetrical (double edged) hammers made of forged alloy steel. These hammers hang loosely on four axles positioned at 90 degree intervals around the deburrer roll. When the roll rotates the centrifugal force causes the hammers to extend to their deburring diameter. Due to the roll speed and the mass of the hammers they hit the burrs several times at high speed before the burr is removed from the product and guided via chutes into a burr removal system. The Deburring system consists of a roll with axles and hammers, bearing blocks, peneumatic driven lifting device with parallelogram, sensors and electric rotor-drive. The machine is controlled by a PLC type Siemens S7 with standard interfaces to steel plant equipment and fault diagnostic system. FEATURES In line deburring during transportation with roller table speed no stop of product necessary Automatic bloom/billet detection with newly designed mechanical touching rolls, which enables an excellent deburring rate even on bent billets Extremely robust for harsh environments of continuous casting machines Electro-pneumatic operation Common drive assembly OPTIONS Single Drives Burr collection system Residual burr detection common drive unit sensor unit machine cover deburring machines MACHINE Frame common drive unit 6 NUMTEC

7 The deburring rotor is made in form of a shaft with welded flanges. Between the flanges axles for suspension of the movable hammers are assembled. The rotor is assembled to the deburrer case with spherical roller bearings. cardan shaft touching roll - deburring rotor deburrer case common drive assembly cardan shaft base frame with lifting unit The deburring rotor is covered with a sturdy cover, serving three functions: Shielding against splintering burrs Insulation of noise Collection of burrs and leading them to the burr conveyance system Inside the cover two double layer chain screens, 2 arranged at entry side - 2 arranged at exit side, are provided for best possible sealing of the cover during the deburring process. Attachment points on top of the machine cover are provided for assembling and disassembling of the machine cover with a crane. No special tools are needed. - deburring rotor for square billets deburring rotor for ROUND billets NUMTEC 7

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9 billet deburrer SLAB DEburrer NUMTEC 9

10 deburrer Technical data Usual application Machine types continuously cast products (slabs, blooms, billets) slab Deburrer, Bloom Deburrer, Billet Deburrer Temperatur range up to 1000 C Machine data rotor diameter: Rotation speed of roll: product speed: Slab 485 mm Approx. 900 rpm Up to 40 m/min Bloom/Billet 425/380 mm Approx rpm Up to 40 m/min Electrical data main supply: Power consumption: control voltage: 3 x 400 V, 50 Hz (Other voltages possible) 68 to 135 kva 24 VDC 3 x 400 V, 50 Hz Up to 50 kva 24 VDC Hydraulic/Pneumatic supply Medium: Pressure: consumption: Mineral oil or water glycol Min. 120 bar Max. 50 l/min Compressed air, clean and dry Min. 5 bar Max. 50 l/min 10 NUMTEC

11 billet deburrer slab deburrer NUMTEC 117

12 V 1.0 ALPINE METAL TECH GMBH BuchbergstraSSe 11, 4844 regau, austria TEL.: +43 / 7672 / , FAX: +43 / 7672 / office@alpinemetaltech.com