Grinding process for M-shaped crack of stainless steel coil

A grinding process, stainless steel technology, applied in the direction of grinding machines, manufacturing tools, abrasive belt grinders, etc., can solve the problems of increased production costs, waste of equipment and energy, and low grinding production efficiency, so as to reduce production costs, improve production efficiency, save The effect of equipment and labor

Active Publication Date: 2019-08-16
ZHANGJIAGANG POHANG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional grinding process generally needs to be repeated for more than three rounds to finally eliminate M-shaped cracks, small white spots and grinding marks on the surface of the steel strip, which leads to low grinding production efficiency, waste of equipment and energy, and increases production costs. heavy workload

Method used

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  • Grinding process for M-shaped crack of stainless steel coil
  • Grinding process for M-shaped crack of stainless steel coil
  • Grinding process for M-shaped crack of stainless steel coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A grinding process for M-shaped cracks in stainless steel coils. The grinding belt 1 is surrounded and fixed by the tension roller 2 and the contact roller 3, and the steel belt 4 is placed between the pressure support roller 5 and the contact roller 3 arranged up and down. The steel belt 4 The two ends of the two ends are pressed and fixed by the brake roller 6, and the two ends of the steel belt 4 in contact with the brake roller 6 form a grinding angle 7 less than 45° with the horizontal plane, and the movement direction of the grinding belt 1 is opposite to that of the steel belt 4, specifically including The following process steps: coarse grinding → coarse grinding → light surface grinding → surface polishing → coarse grinding → coarse grinding → light surface grinding → surface polishing;

[0031] Among them, for coarse grinding, the upper and lower surfaces of the steel belt 4 pass through the No. 1 grinding belt unit and the No. 2 grinding belt unit respectively...

Embodiment 2

[0044] A grinding process for M-shaped cracks in stainless steel coils. The grinding belt 1 is surrounded and fixed by the tension roller 2 and the contact roller 3, and the steel belt 4 is placed between the pressure support roller 5 and the contact roller 3 arranged up and down. The steel belt 4 The two ends of the two ends are pressed and fixed by the brake roller 6, and the two ends of the steel belt 4 in contact with the brake roller 6 form a grinding angle 7 less than 45° with the horizontal plane, and the movement direction of the grinding belt 1 is opposite to that of the steel belt 4, specifically including The following process steps: coarse grinding → coarse grinding → light surface grinding → surface polishing → coarse grinding → coarse grinding → light surface grinding → surface polishing;

[0045]Among them, for coarse grinding, the upper and lower surfaces of the steel belt 4 pass through the No. 1 grinding belt unit and the No. 2 grinding belt unit respectively,...

Embodiment 3

[0058] A grinding process for M-shaped cracks in stainless steel coils. The grinding belt 1 is surrounded and fixed by the tension roller 2 and the contact roller 3, and the steel belt 4 is placed between the pressure support roller 5 and the contact roller 3 arranged up and down. The steel belt 4 The two ends of the two ends are pressed and fixed by the brake roller 6, and the two ends of the steel belt 4 in contact with the brake roller 6 form a grinding angle 7 less than 45° with the horizontal plane, and the movement direction of the grinding belt 1 is opposite to that of the steel belt 4, specifically including The following process steps: coarse grinding → coarse grinding → light surface grinding → surface polishing → coarse grinding → coarse grinding → light surface grinding → surface polishing;

[0059] Among them, for coarse grinding, the upper and lower surfaces of the steel belt 4 pass through the No. 1 grinding belt unit and the No. 2 grinding belt unit respectively...

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Abstract

The invention discloses a grinding process for an M-shaped crack of a stainless steel coil. A grinding belt is fixed to a contact roller in a surrounding mode through a tension roller, a steel belt isplaced between a pressure supporting roller and the contact roller which are arranged up and down, two ends of the steel belt are pressed and fixed through a brake sticking roller, the two ends of the steel belt, in contact with the brake sticking roller, form a grinding angle less than 45 degrees with the horizontal plane, and motion directions of the grinding belt and the steel belt are opposite. The grinding process for the M-shaped crack of the stainless steel coil specifically comprises the following process steps of rough grinding, rougher grinding, surface light grinding, surface polishing, rough grinding, rougher grinding, surface light grinding and surface polishing. The grinding process is divided into two times of rough grinding (ZrO2 grinding belt), two times of rougher grinding (ZrO2 grinding belt), one time of surface light grinding (ZrO2 grinding belt) and one time of surface polishing (Al2O3 grinding belt), good grinding effect can be achieved on the surface of the stainless steel coil, the production efficiency is improved, equipment and labor are saved, and the production cost is reduced.

Description

technical field [0001] The invention relates to a stainless steel processing technology, in particular to a grinding technology for M-shaped cracks in a stainless steel coil. Background technique [0002] After hot rolling, solution annealing and pickling, the surface of stainless steel is silvery white and dull. At this time, there are M-shaped cracks on the surface of the steel coil, which not only affects the customer's use requirements for the stainless steel surface, but also affects the mechanical properties of the stainless steel. Corrosion resistance. In order to ensure the surface quality of the subsequent cold-rolled products, it is necessary to grind and eliminate the M-shaped cracks, and the grinding process will affect the grinding efficiency, the surface quality of the stainless steel coil after grinding, and the length of the grinding marks left after grinding. [0003] The traditional grinding process generally needs to be repeated for more than three rounds...

Claims

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Application Information

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IPC IPC(8): B24B21/00B24B21/18B24B21/20
CPCB24B21/006B24B21/008B24B21/18B24B21/20
Inventor 白伟伟
Owner ZHANGJIAGANG POHANG STAINLESS STEEL
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