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8K mirror board manganese nitrogen series nickel-saving austenitic stainless steel and preparation method thereof

A technology of austenitic stainless steel and mirror panels, applied in the field of stainless steel, can solve problems such as low yield, increased grinding passes, and poor surface uniformity of mirror panels, so as to achieve uniform surface, improve surface quality, and increase production speed Effect

Active Publication Date: 2022-01-28
广东省高端不锈钢研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in the existing technology, the traditional process technology for producing mirror panels adopts conventional smelting, pressing and other processes, and the white rolls produced through this process still have relatively high roughness, so the white rolls produced by this process still have relatively high roughness. The uniformity of the surface of the rolled mirror panel is still poor, which affects the mirror effect of the mirror panel, the yield is low, and the quality of the mirror panel is unstable. , increasing the number of grinding passes and other means, reducing the low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of 8K mirror panel manganese nitrogen system nickel-free austenitic stainless steel composition is:

[0023] C: 0.143%, Si: 0.403%, Mn: 8.109%, P: 0.042%, S: 0.0006%, Cr: 14.5%, Ni: 1.195%, Cu: 0.252%, N: 0.153%, and the balance Fe.

[0024] The method for preparing an 8K mirror panel using the above components is as follows:

[0025] 1. Smelt the raw materials of austenitic stainless steel with the above components for 13 minutes, and continuously cast them into slabs in the heating furnace. The temperature of the continuous casting slabs entering the furnace is 358°C, the temperature after passing through the preheating section is 859°C, and the temperature in the first heating section is 1172°C , the temperature in the second heating zone is 1269°C, and the temperature in the soaking section is 1293°C.

[0026] 2. The obtained steel slabs are successively subjected to hot rolling and finishing rolling, wherein, during hot rolling and finishing rolling, the nu...

Embodiment 2

[0033] A kind of 8K mirror panel manganese nitrogen system nickel-free austenitic stainless steel composition is:

[0034] C: 0.075%, Si: 0.353%, Mn: 9.032%, P: 0.05%, S: 0.00139%, Cr: 14.768%, Ni: 1.202%, Cu: 0.809%, N: 0.1443%, and the balance Fe.

[0035] The method for preparing an 8K mirror panel using the above components is as follows:

[0036] 1. Smelt the raw materials of austenitic stainless steel with the above components for 15 minutes, and continuously cast them into slabs in the heating furnace. The temperature of the continuously cast slabs entering the furnace is 479°C, the temperature after passing through the preheating section is 843°C, and the temperature in the first heating section is 1168°C , the temperature in the second heating zone is 1264°C, and the temperature in the soaking section is 1272°C.

[0037] 2. The obtained steel slabs are successively subjected to hot rolling and finishing rolling, wherein, during hot rolling and finishing rolling, the ...

Embodiment 3

[0044] A kind of 8K mirror panel manganese nitrogen system nickel-free austenitic stainless steel composition is:

[0045]C: 0.096%, Si: 0.447%, Mn: 7.682%, P: 0.039%, S: 0.000857%, Cr: 12%, Ni: 3%, Cu: 0.2%, N: 0.1531%, and the balance Fe.

[0046] The method for preparing an 8K mirror panel using the above components is as follows:

[0047] 1. Smelt the raw materials of austenitic stainless steel with the above components for 10 minutes, and continuously cast them into slabs in the heating furnace. The temperature of the continuously cast slabs entering the furnace is 397°C, the temperature in the preheating section is 700°C, and the temperature in the first heating section is 1150°C. , the temperature in the second heating zone is 1250°C, and the temperature in the soaking section is 1268°C.

[0048] 2. The steel slab obtained is successively subjected to hot rolling and finish rolling, wherein, during hot rolling and finish rolling, the number of rolling rolls is 67 coils...

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PUM

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Abstract

The invention discloses 8K mirror board manganese nitrogen series nickel-saving austenitic stainless steel, and relates to the technical field of stainless steel. The austenitic stainless steel comprises, by mass, 0.15% or less of C, 0.45% or less of Si, 10% or less of Mn, 0.055% or less of P, 0.003% or less of S, 0.16% or less of N, 12%-18% of Cr, 1.00%-3.00% of Ni, 0.2%-2% of Cu and the balance Fe. Meanwhile, the invention further provides a preparation method of the 8K mirror board manganese nitrogen series nickel-saving austenitic stainless steel. By controlling the components and the preparation process of the austenitic stainless steel, the white-skin roll with the low Ra value (Ra is smaller than or equal to 2.8 microns) can be obtained, the surface of the white-skin roll is uniform, the defects such as second-class peeling and hot cracking do not exist, and the production speed and the surface quality of subsequent mirror board finish machining and grinding can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of stainless steel, in particular to an 8K mirror plate manganese nitrogen system nickel-free austenitic stainless steel and a preparation method thereof. Background technique [0002] Manganese-nitrogen nickel-free austenitic stainless steel has been paid more and more attention in the field of decorative panels in recent years because of its good corrosion resistance, certain formability, good coloring ability and cost advantage. Especially with the improvement of people's living standards, the demand for high-end panel products such as 8k mirror panels and color-coated panels is increasing. Generally, by using stainless steel hot-rolled steel coils, after cold-rolling, polishing, grinding and color-plating processes, the surface is uniform and as bright as a mirror. [0003] However, manganese-nitrogen-based nickel-free austenitic stainless steel is used as the raw material for the production of mirror p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C38/58C23G1/08C21D1/26C21D6/00C21D8/02C22C33/04
CPCC22C38/004C22C38/02C22C38/04C22C38/58C22C38/002C22C38/001C22C38/42C22C33/04C21D1/26C21D6/004C21D6/005C21D6/008C21D8/0205C21D8/0221C21D8/0247C23G1/086C21D2211/001Y02P10/20
Inventor 郭晓蒙覃泉龙刘伟何金元胡国朱张鹏明亚飞
Owner 广东省高端不锈钢研究院有限公司
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