Manufacture method of austenitic stainless steel with good polishing performance

A technology of austenitic stainless steel and manufacturing method, which is applied in the field of austenitic stainless steel manufacturing, and can solve the problems that the polishing performance of materials cannot be fundamentally improved

Active Publication Date: 2013-02-13
ZHANGJIAGANG POHANG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The starting point of the above three existing technologies is to use pickling technology to reduce the depth of intergranular corrosion grooves to improve the polishability of the material, but this method cannot fundamentally improve the polishability of the material in actual production

Method used

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  • Manufacture method of austenitic stainless steel with good polishing performance

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides an austenitic stainless steel plate with excellent polishing performance, and its manufacturing method comprises the following steps:

[0032] Hot rolling: using HSS rolls, through width change, and hot rolling and rolling mixed weaving, the raw material slab is hot rolled and rolled to obtain hot rolled stainless steel;

[0033] Hot-rolled annealing: performing continuous annealing on the hot-rolled stainless steel at 980-1040°C to obtain a hot-rolled and annealed stainless steel plate;

[0034] Pickling after hot-rolling and annealing: adopt the continuous pickling process of scale breaking-shot blasting-mixed acid to pickle and remove scale on the stainless steel plate after the hot-rolling and annealing, wherein the flow rate of shot blasting is controlled at 600kg / min to obtain hot-rolled Annealed and pickled stainless steel;

[0035] Cold rolling: use a cold rolling mill to cold-roll the stainless steel plate after the hot-rolled annealin...

Embodiment 2

[0040] This embodiment provides an austenitic stainless steel plate with excellent polishing performance. Its manufacturing method is basically the same as that of Embodiment 1, except that the total reduction rate during cold rolling is 65%, and the last 2 passes of the cold rolling mill Work rolls with a roughness of 0.08 μm were used.

Embodiment 3

[0042] This embodiment provides an austenitic stainless steel plate with excellent polishing performance. Its manufacturing method is basically the same as that of Embodiment 1, the difference is that the total reduction rate during cold rolling is 62%, and the last 2 passes of the cold rolling mill Work rolls with a roughness of 0.1 μm are used.

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Abstract

The invention provides a manufacture method of austenitic stainless steel with good polishing performance, comprising the following steps of: carrying out hot rolling, carrying out hot-rolling annealing, carrying out acid washing after hot-rolling annealing, carrying out cold rolling, carrying out cold-rolling annealing, carrying out acid washing after cold-rolling annealing, and refining. The manufacture method is characterized in that the hot rolling adopts a centrifugal composite high-speed steel roller, wherein the hot-rolling is carried out on a raw material blank due to the width change; the cold rolling is carried out by a cold-rolling machine, wherein the roughness of a work roll of the cold-rolling machine is less than 0.3mum; and the refining elongation rate is 0.3-3.0%. According to the manufacture method provided by the invention, the grinding performance and the surface polishing performance of the austenitic stainless steel can be improved, and the stainless steel manufactured by the manufacture method provided by the invention can be used for manufacturing a mirror surface decorative sheet with good polishing performance and the like.

Description

technical field [0001] The invention relates to a method for manufacturing austenitic stainless steel, in particular to a method for manufacturing austenitic stainless steel with excellent polishing performance, and belongs to the field of stainless steel smelting. Background technique [0002] Austenitic stainless steel represented by SUS304 has excellent comprehensive properties such as corrosion resistance, heat resistance, and machinability. This type of stainless steel is widely used and has a high market share in stainless steel products. With the improvement of people's living standards, more and more construction, decoration, food hygiene, electronics and other industries use 304 austenitic stainless steel bright plate and mirror plate, and put forward higher requirements for the surface of the material, more diverse change. The stainless steel generally used in the above fields is usually 2B or BA plate, or a mirror plate made by polishing on this basis, or a grind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C22C38/00
Inventor 黄涛刘尚平
Owner ZHANGJIAGANG POHANG STAINLESS STEEL
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