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Martensitic stainless steel wire with excellent cold working performance and high wear resistance and preparation method thereof

A martensitic stainless steel, cold working technology, applied in the direction of improving process efficiency, can solve the problems of difficulty, complex production process and high cost, and achieve the effect of improving the purity of molten steel, improving cold working performance and improving wear resistance.

Active Publication Date: 2022-05-17
浙江青山钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, materials with high carbon content have poor plasticity, and it is difficult to produce parts such as slide rails and slides with large deformation
At present, it needs to be produced by thermal processing, the production process is complicated, the efficiency is low, and the cost is high

Method used

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  • Martensitic stainless steel wire with excellent cold working performance and high wear resistance and preparation method thereof
  • Martensitic stainless steel wire with excellent cold working performance and high wear resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The first choice is to adopt the smelting path of electric arc furnace-AOD-VOD-LF to smelt stainless steel molten steel. In the process of electric arc furnace smelting, AOD furnace smelting and VOD furnace smelting, argon blowing and stirring are used; the ultimate vacuum degree of VOD furnace is required to be ≤67Mpa, the actual control is 20Mpa, and the vacuum holding time is ≥15min, which is actually 16min; in the LF refining process, feeding Enter the Al line, keep the Al content of the tapped steel at 0.020wt% ~ 0.040wt%, the actual control is 0.030wt%, and control the oxygen content of the tapped steel during refining to ≤ 30ppm, the refining time is ≥ 40min, and the actual refining time is controlled at 50min. After the end, the soft blowing time of argon blowing is ≥10min, and the actual control is 15min; the composition test shows that the oxygen content [O] in the steel is ≤30ppm, and the actual value is 25ppm.

[0032] Continuous casting of the above-mention...

Embodiment 2

[0037] The first choice is to adopt the smelting path of electric arc furnace-AOD-VOD-LF to smelt stainless steel molten steel. In the process of electric arc furnace smelting, AOD furnace smelting and VOD furnace smelting, argon blowing is used for stirring; the ultimate vacuum degree of VOD furnace is required to be ≤67Mpa, and the actual control is 25Mpa, and the vacuum holding time is ≥15min, which is actually 17min; in the LF refining process, feed Enter the Al line, keep the Al content of the tapped steel at 0.020wt% ~ 0.040wt%, the actual control is 0.032wt%, and control the oxygen content of the tapped steel during refining to ≤ 30ppm, and the refining time is ≥ 40min. The actual refining time is controlled at 56min. After the end, the soft blowing time of argon blowing is ≥10min, and the actual control is 13min; the composition test shows that the oxygen content [O] in the steel is ≤30ppm, and the actual value is 22ppm.

[0038] Continuous casting of the above-mention...

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Abstract

The invention relates to the technical field of metal smelting, in particular to a martensitic stainless steel wire with excellent cold working performance and high wear resistance, characterized in that the chemical composition of the stainless steel wire includes C: 0.60-0.70% and Cr: 15.0-17.0% by mass percentage %, Mo:0.30~0.60%, V:0.10~0.40%, Cu≤0.20%, Al:0.02~0.04%, Ni:0.20~0.40%, Mn≤0.40%, Si≤0.30%, P≤0.03%, N≤0.02%, S≤0.002%, and the balance is Fe and unavoidable impurities. It also relates to the preparation method of the stainless steel wire rod, the preparation method comprises that the reaction raw materials are sequentially smelted by the three-step method of electric arc furnace-AOD-VOD-LF to obtain molten stainless steel, and then the obtained molten steel is sequentially subjected to continuous casting and rolling. Processing, annealing, pickling process. The present invention enables the material to have excellent cold working performance and high wear resistance through component design and production process optimization, improves production efficiency and saves processing costs, and the present invention has broad market application prospects.

Description

【Technical field】 [0001] The invention relates to the technical field of smelting and preparation of martensitic stainless steel wires, in particular to martensitic stainless steel wires with excellent cold working performance and high wear resistance and a preparation method thereof. 【Background technique】 [0002] Martensitic stainless steel is characterized by excellent corrosion resistance and high strength, and is widely used in mechanical parts such as shafts and sleeves that require corrosion resistance. Among them, martensitic stainless steel with high carbon content has excellent wear resistance, and is used for high wear-resistant parts such as bearings, bearing sleeves, slides, slide rails, and knives. [0003] At present, the main chemical components of martensitic stainless steel with high wear resistance are high Cr elements (16-19%) and high C elements (0.7-1.2%), which have good wear resistance while ensuring the corrosion resistance of the material. . Howe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C21D1/26C21D1/74C21D6/00C21D8/06C22C33/04
CPCC22C38/44C22C38/46C22C38/06C22C38/42C22C38/02C22C38/04C22C38/001C22C33/04C21D1/26C21D1/74C21D6/004C21D6/005C21D6/008C21D8/065C21D2211/008Y02P10/20
Inventor 罗斌季灯平刘言军张伟楠朱晓洁
Owner 浙江青山钢铁有限公司