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301 stainless steel production method, and 301 stainless steel and application thereof

A production method and stainless steel technology, applied in the production method of 301 stainless steel and the field of 301 stainless steel, can solve the problems of poor corrosion resistance, failure to meet the manufacturing requirements of high-end elastic components, and poor corrosion resistance, so as to improve hardenability and creep Effects of improving performance and increasing strength

Active Publication Date: 2019-09-10
ZHANGJIAGANG POHANG STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, 301 stainless steel is widely used in the field of spring manufacturing, but the stainless steel materials obtained by traditional components and manufacturing methods have poor corrosion resistance under high temperature or reducing medium conditions, and poor corrosion resistance in chemical media such as acid, alkali and salt. Poor, unable to meet the manufacturing requirements of high-end elastic components

Method used

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  • 301 stainless steel production method, and 301 stainless steel and application thereof
  • 301 stainless steel production method, and 301 stainless steel and application thereof
  • 301 stainless steel production method, and 301 stainless steel and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A method for producing 301Si stainless steel. The 301Si stainless steel includes the following chemical components in terms of weight percentage: C: 0.1113; Si: 1.246; Mn: 1.365; P: 0.034; S: 0.0016; Cr16.374; Ni: 6.3; N : 0.0146; Mo: 0.107, the balance is Fe and other unavoidable impurity elements; Md30 is 23 ~ 65 ° C; it is characterized by the following steps:

[0050] 1) Smelting of billets:

[0051] The steel billet is dissolved by the electric furnace, and then decarburized by the converter argon oxygen decarburization (AOD) furnace, and the molten steel is further purified through the reduction stage, and high-quality raw materials are added at the end of blowing to adjust the composition. Continue to carry out argon blowing (element symbol Ar) stirring in the refining furnace (LT) of the ladle treatment process to make the inclusions in the molten steel float up, and absorb the floating inclusions through the covering agent that has been put in. During the ladle...

Embodiment 2

[0062] A method for producing 301SiMo stainless steel. The 301SiMo stainless steel includes the following chemical components in terms of weight percentage: C: 0.1102; Si: 1.241; Mn: 1.332; P: 0.0309; S: 0.0018; Cr: 16.309; Ni: 6.57; : 0.0157; Mo: 0.577, the balance is Fe and other unavoidable impurity elements, Md30 is 11 ~ 53 ℃; it is characterized by the following steps:

[0063] 1) Smelting of billets:

[0064] The steel billet is dissolved by the electric furnace, and then decarburized by the converter argon oxygen decarburization (AOD) furnace, and the molten steel is further purified through the reduction stage, and high-quality raw materials are added at the end of blowing to adjust the composition. Continue to carry out argon blowing (element symbol Ar) stirring in the refining furnace (LT) of the ladle treatment process to make the inclusions in the molten steel float up, and absorb the floating inclusions through the covering agent that has been put in. During the l...

Embodiment 3

[0082] The 301SiMo stainless steel obtained in Example 2 is used in the fields of high-end elastic components, electronic equipment, etc., and undergoes precision rolling and tempering treatment during use. Such as image 3 Shown is the variation curve of the processing strength of 301SiMo stainless steel, and it can be seen that the reduction rate is linearly related to the processing strength (Yp).

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Abstract

The invention discloses a 301 stainless steel production method, and 301 stainless steel and an application thereof. The 301 stainless steel production method is characterized by including following steps: smelting a steel blank; heating a plate blank; rolling the plate blank; performing solid dissolution treatment; performing acid pickling and levelling; rolling; performing solid dissolution andacid pickling operation on sheet material 1.0-1.5mm in thickness through a cold annealing and acid pickling furnace at temperature of 1207-1216 DEG C and at speed L / S of 80-97.5mpm so as to fully dissolve the sheet material, and finally obtaining a 2B surface cold-rolled stainless steel product 9-10 grade in grain size and 1100-1120Mpa in product tensile strength. The 301 stainless steel production method has the beneficial effect of obtaining 301Si and 301SiMo stainless steel new products by adjusting product compositions and increasing content of Si and Mo, and meanwhile controlling harmfulelements such as S and P in steelmaking, implementing a clean steel smelting process, controlling inclusions, enabling the 301 stainless steel to have high strength, endowing the 301 stainless steel with certain corrosion resistance, and enabling the 301 stainless steel to meet use requirements.

Description

technical field [0001] The invention belongs to the technical field of stainless steel smelting, and in particular relates to a production method of 301 stainless steel used for elastic elements with high elasticity and high corrosion resistance and 301 stainless steel. Background technique [0002] 301 stainless steel is a metastable austenitic stainless steel, which has a complete austenitic structure under the condition of sufficient solid solution. 301 stainless steel is the most easily cold deformed and strengthened steel among stainless steels. The strength and hardness of steel can be improved through cold deformation processing, and sufficient plasticity and toughness can be retained. In addition, 301 stainless steel has good rust resistance under atmospheric conditions. Therefore, 301 stainless steel is mainly used in the cold working state for equipment parts that bear high loads and hope to reduce the weight of equipment and not rust. In addition, 301 stainless s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D8/02C22C38/02C22C38/04C22C38/58C22C38/40C22C38/44
CPCC21D8/0226C21D8/0236C21D8/0247C21D2211/001C22C38/02C22C38/04C22C38/40C22C38/44C22C38/58Y02P10/20
Inventor 吴辉
Owner ZHANGJIAGANG POHANG STAINLESS STEEL
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