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Cold roller for rolling stainless steel plates, and preparation method of cold roller

A technology of stainless steel plate and cold rolling roll, applied in the field of cold rolling roll for rolling stainless steel plate and its preparation, can solve the problems of increased use cost, early crack of roll, large deformation resistance, etc. Effects of heat treatment stress

Inactive Publication Date: 2015-11-18
YIXING YONGCHANG ROLL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stainless steel is a high-alloy steel with high deformation resistance during rolling. It is a kind of difficult-to-deform metal material. As a high-grade steel product, cold-rolled stainless steel has very strict requirements on surface quality, and also has strict requirements on the internal quality and performance of rolls. Very high. At present, the materials used to make cold rolls at home and abroad include Cr2, Cr3, and Cr5 series. Rolls of such materials are prone to early cracks or even peeling off during use, and the cost of use is greatly increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The composition and weight percentage of the cold roll are: C: 0.67%; Si: 0.38%; Mn: 0.63%; Cr: 3.3%; Ni: 0.46%; Mo: 0.23%; S, P≤0.015; For Fe and inevitable impurity elements. The steps of the preparation method for the cold rolling roll used for rolling stainless steel plates include: (1) making a roll blank according to the above chemical composition scheme, and the quality of the roll blank is qualified; (2) performing rough processing and quenching and tempering heat treatment on the roll blank; (3) Carry out semi-finishing to the roll blank according to the requirements of the drawing, finely grind the roll body and conduct ultrasonic flaw detection inspection; (4) Carry out high-temperature induction quenching on the roll body, the quenching temperature is 940°C; (5) Immediately perform -80°C on the quenched roll Cryogenic treatment at ℃; (6) Tempering the cold-treated roll at a temperature of 170°C; (7) Finally, finish machining to obtain a finished roll with a ...

Embodiment 2

[0017] The composition and weight percentage of the cold roll are: C: 0.72%; Si: 0.55%; Mn: 0.67%; Cr: 3.32%; Ni: 0.53%; Mo: 0.31%; S: 0.009%; P: 0.013%; the rest is Fe and unavoidable impurity elements. The steps of the preparation method for the cold rolling roll used for rolling stainless steel plates include: (1) making a roll blank according to the above chemical composition scheme, and the quality of the roll blank is qualified; (2) performing rough processing and quenching and tempering heat treatment on the roll blank; (3) Carry out semi-finishing to the roll blank according to the requirements of the drawings, finely grind the roll body and conduct ultrasonic flaw detection inspection; (4) Carry out high-temperature induction quenching on the roll body, and the quenching temperature is 945°C; (5) Immediately perform -90 ℃ cryogenic treatment; (6) Tempering the cold-treated roll, the tempering temperature is 175°C; (7) Finally, finish machining to obtain the finished r...

Embodiment 3

[0019] The composition and weight percentage of the cold roll are: C: 0.68%; Si: 0.43%; Mn: 0.72%; Cr: 3.45%; Ni: 0.45%; Mo: 0.26%; S: 0.006%; P: 0.015%; the rest is Fe and unavoidable impurity elements. The steps of the preparation method for the cold rolling roll used for rolling stainless steel plates include: (1) making a roll blank according to the above chemical composition scheme, and the quality of the roll blank is qualified; (2) performing rough processing and quenching and tempering heat treatment on the roll blank; (3) Carry out semi-finishing to the roll billet according to the requirements of the drawings, finely grind the roll body and carry out ultrasonic flaw detection inspection; (4) Carry out high-temperature induction quenching on the roll body, and the quenching temperature is 930°C; (5) Immediately perform -85 ℃ cryogenic treatment; (6) Temper the cold-treated roll with a tempering temperature of 165°C; (7) Finish the final roll to obtain the finished rol...

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Abstract

The invention discloses a cold roller for rolling stainless steel plates, and a preparation method of the cold roller. The cold roller is prepared from the following components in percentage by weight: 0.50-0.90% of C, 0.20-0.80% of Si, 0.40-1.0% of Mn, 2.8-4.0% of Cr, 0.20-0.60% of Ni, 0.20-0.60% of Mo, S which is smaller than or equal to 0.015%, P which is smaller than or equal to 0.015%, and the balance of Fe and inevitable impurities. The preparation method comprises the following steps: manufacturing roller blank; performing rough processing and quenched-tempered heat treatment on the manufactured roller blank; performing semi fine processing on the heated roller blank; finely grinding a roller body and performing ultrasonic flaw examination; performing high-temperature induction quenching on the ground roller body under 920-950 DEG C; immediately performing cryogenic treatment on the quenched roller under minus 80-minus 100 DEG C; and performing tempering heat preservation on the cooled roller under 160-180 DEG C. According to the cold roller disclosed by the invention, the surface hardness is 85-90 HSD, and the cold roller has a good crack-expansion resisting performance and high basal-body strength.

Description

technical field [0001] The invention relates to a cold rolling roll and a manufacturing method thereof, in particular to a cold rolling roll suitable for rolling stainless steel plates and a manufacturing method thereof. Background technique [0002] Stainless steel is a special variety of steel. Because of its beautiful appearance, excellent rust resistance and corrosion resistance, with the progress and development of society, its application range is becoming wider and wider, and its usage is also increasing. It is widely used It is used in building materials, automobiles, chemicals and other industries, and the output is also increasing year by year. Driven by the huge demand in the market, the output of domestic stainless steel has also been developing at a relatively fast speed. Stainless steel is a high-alloy steel with high deformation resistance during rolling. It is a kind of difficult-to-deform metal material. As a high-grade steel product, cold-rolled stainless ...

Claims

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Application Information

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IPC IPC(8): C22C38/44C21D9/38C21D1/10C21D6/04
CPCY02P10/25
Inventor 陈彬杨国平
Owner YIXING YONGCHANG ROLL
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