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Heat-resistant austenitic stainless steel and manufacturing method thereof

A kind of austenitic stainless steel, heat-resistant technology, applied in heat-resistant austenitic stainless steel, heat-resistant austenitic stainless steel hot-rolled plate and its manufacturing field, can solve the problem of difficult to achieve high temperature strength, oxidation resistance and corrosion resistance, Problems such as low temperature resistance

Inactive Publication Date: 2021-06-18
宝武特种冶金有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The heat-resistant austenitic stainless steel-related patents retrieved above involve properties such as oxidation resistance, high-temperature strength and high-temperature creep, but their high-temperature resistance is still low, and it is difficult to achieve excellent high-temperature strength, oxidation resistance and corrosion resistance.

Method used

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  • Heat-resistant austenitic stainless steel and manufacturing method thereof
  • Heat-resistant austenitic stainless steel and manufacturing method thereof
  • Heat-resistant austenitic stainless steel and manufacturing method thereof

Examples

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Embodiment 1～5

[0039] The composition of the heat-resistant austenitic stainless steel of Examples 1 to 5 in the present invention is listed in Table 2, and the manufacturing method comprises the following steps:

[0040] EAF (Electric Furnace) + AOD (Argon Oxygen Decarburization Furnace) + LF (Ladle Refining Furnace) is used for smelting, continuous casting or die casting of flat ingots, specifically: adding ferrochromium, ferronickel and scrap steel into the electric furnace for melting, and then The molten steel is poured into the AOD furnace, and the blowing and chemical composition adjustment of de-C, de-O, de-S and N-control are carried out in the AOD furnace. When the smelting composition basically meets the requirements, the molten steel is poured into the LF furnace for the final Chemical composition and molten steel temperature adjustment; through this method of electric furnace + refining outside the furnace to obtain qualified molten steel with good purity, the production cost is ...

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Abstract

The invention relates to heat-resistant austenitic stainless steel. Chemical components of the heat-resistant austenitic stainless steel comprise, by weight (wt%), 0.02 to 0.12% of C, 1.5 to 3.5% of Si, 0.5 to 2.0% of Mn, less than or equal to 0.035% of P, less than or equal to 0.015% of S, 13.0 to 18.0% of Ni, 23.0 to 28.0% of Cr, 0.10 to 1.50% of Mo, 0.25 to 0.40% of N, 0.02 to 0.15% of Al and the balance of Fe and inevitable impurities. The heat-resistant austenitic stainless steel has excellent high-temperature mechanical properties, oxidation resistance and corrosion resistance, and can be used for processing and manufacturing heat-resistant parts with high requirements on high-temperature resistance.

Description

technical field [0001] The invention belongs to the field of stainless steel materials and relates to a heat-resistant austenitic stainless steel, in particular to a heat-resistant austenitic stainless steel hot-rolled plate with excellent high-temperature mechanical properties, oxidation resistance and corrosion resistance and a manufacturing method thereof. Background technique [0002] At present, the austenitic stainless steel widely used at home and abroad is mainly 300 series. These steel types have good plasticity and corrosion resistance, but these steel types have low high-temperature strength and poor oxidation resistance, so they cannot be used in high-temperature resistant environments. . Heat-resistant austenitic stainless steel 310S has good oxidation resistance, corrosion resistance, and high-temperature creep strength due to its high chromium and nickel content. It can continue to work at high temperatures and has good high-temperature resistance. In some ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/04C22C38/02C22C38/44C22C38/06C22C30/00C21D8/02
CPCC22C38/58C22C38/04C22C38/34C22C38/44C22C38/001C22C38/06C22C30/00C21D8/0226C21D8/0263C21D2211/001Y02P10/20
Inventor 余式昌徐松乾庄伟
Owner 宝武特种冶金有限公司
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