Copper-free nickel-saving cold-rolled austenitic stainless steel and manufacturing method thereof
A technology of austenitic stainless steel and a manufacturing method, applied in the smelting of stainless steel, copper-free nickel-type cold-rolled austenitic stainless steel and its manufacture, and rolling field, can solve the problem of high nickel content, and achieve good comprehensive performance and high Intensity, the effect of saving strategic elements
Active Publication Date: 2020-12-22
广西柳钢中金不锈钢有限公司 +1
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[0007] The invention provides a copper-free and nickel-free cold-rolled austenitic stainless steel and a manufacturing method thereof to solve the problem of high nickel content in austenitic stainless steel
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[0041] The present invention is applied in the developed 0.65mm specification J5 copper-free nickel-type austenitic stainless steel cold-rolled coil, and the main steps are:
[0042] Chemical composition control of J5 copper-free austenitic stainless steel cold-rolled coil smelting process: C: 0.13%, Si: 0.50%, Mn: 11.0%, P: 0.041%, S: 0.005%, Cr: 13.3%, Ni: 1.12 %, N: 0.18%;
[0043] The temperature of the soaking section of the hot rolling heating furnace is 1250°C, the starting temperature of rough rolling is 1200°C, the thickness of the intermediate billet is 36mm, the finishing rolling temperature is 1030°C, and the coiling temperature is 840°C;
[0044] The solution annealing temperature is 1100°C, the annealing speed is 21m / min, and the pickling speed is 45m / min;
[0045] 4) The total reduction rate of six-stand cold rolling is 65%, the annealing temperature is 1080°C, and the TV value is 8.
[0046] 5) The yield strength of the cold-rolled coil is 410Mpa, the tensile...
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Abstract
The invention provides copper-free nickel-saving cold-rolled austenitic stainless steel and a manufacturing method thereof. The copper-free nickel-saving cold-rolled austenitic stainless steel comprises the following components in percentage by weight: 0.06-0.16% of C, less than or equal to 0.75% of Si, 9.00-11.50% of Mn, less than or equal to 0.060% of P, less than or equal to 0.030% of S, 12.50-14.50% of Cr, 0.7-2.00% of Ni, 0.10-0.25% of N and the balance of Fe and inevitable impurity elements. The components are adopted in the manufacturing method. The copper-free nickel-saving cold-rolledaustenitic stainless steel has the advantages of low cost, saving of expensive strategic elements, improvement of the use safety of stainless steel, high strength, good cold working performances, good comprehensive performances, and great application market prospect.
Description
technical field [0001] The invention relates to the field of steel rolling, in particular to smelting and rolling of stainless steel, in particular to a copper-free and nickel-free cold-rolled austenitic stainless steel and a manufacturing method thereof. Background technique [0002] Low-nickel austenitic stainless steel replaces the Ni element in Cr-Ni stainless steel with Mn, N and other elements, so it has lower cost and excellent comprehensive performance, and is widely used in domestic decoration and welded pipe industries. However, due to the addition of Mn and N, the cold working of low-nickel austenitic stainless steel is difficult, and it shows the characteristics of high strength and high cold work hardening index, which restricts the development and use of this steel. Therefore, it is of great significance to study the cold deformation and strain hardening mechanism of low-nickel austenitic stainless steel. [0003] Nickel has the effect of expanding the austeni...
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IPC IPC(8): C22C38/02C22C38/58C23G1/08C23G3/02C21D1/26C21D6/00C21D8/02C21D9/52C22C33/04
CPCC22C38/02C22C38/58C22C38/002C22C38/001C22C33/04C21D1/26C21D6/004C21D6/005C21D6/008C21D8/0221C21D9/52C23G3/02C23G1/086
Inventor 罗兴壮罗庆革杨剑洪刘川俊樊雷潘礼双曾垚王碧田宇航康君肖永刚陈小龙钱学海吴海林陈盛淋
Owner 广西柳钢中金不锈钢有限公司