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Processing Technology of High Nitrogen Wear-Resistant Stainless Steel Ore Screen Wire

A processing technology and mine screen wire technology, which is applied in the field of high-nitrogen wear-resistant stainless steel mine screen wire processing technology, can solve the problems of grain refinement not meeting the requirements, poor corrosion resistance and wear resistance, high probability of material phase change, etc. , to achieve the effect of getting rid of the control bottleneck, not easy to slip, and reducing production and application costs

Inactive Publication Date: 2017-04-12
JIANGSU LIJIN NEW MATERIAL TECH CO LTD
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  • Summary
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AI Technical Summary

Problems solved by technology

[0005] In recent years, international and domestic research and development of new stainless steel mainly adopts methods such as adding manganese and chromium to reduce the amount of nickel used. The grain refinement cannot meet the requirements, and the probability of material phase change is high. Therefore, the magnetization phenomenon is prominent, and the corrosion resistance and wear resistance are high. Poor performance, can only be used for general building decoration materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: the production and processing method of LJ301 high-nitrogen stainless steel ore screen wire

[0042] (1) According to the ratio of manganese≦15, chromium≦15, nitrogen 0.2, carbon≦0.12, silicon≦1, phosphorus 0.003, sulfur 0.001, nickel 1.5, enter the intermediate frequency furnace for smelting;

[0043] (2) After the composition is qualified, add 20 kg / ton of vanadium-nitrogen alloy additive, raise the temperature to 1600°C to combine nitrogen and chromium to form a ceramic structure, and purify and refine the molten steel;

[0044] (3) Stir the molten steel for 10 minutes to improve the uniformity of steel crystal grains, reduce segregation, and purify the molten steel;

[0045] (4) Increase the tapping temperature from 1550°C to 1630°C, pour molten steel into the steel mold to cool;

[0046] (5) Pour out the steel ingot, grind the surface of the steel ingot and cut off the head, so as to avoid the occurrence of beam holes during rolling and the occurrenc...

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Abstract

The invention discloses a high-nitrogen abrasion-resistant stainless steel griddle wire processing technology. Manganese and nitrogen are adopted, vanadium-nitrogen alloy is added, the content of nitrogen in molten steel is increased, alloying of the nitrogen is achieved, the use amount of nickel is reduced, or the nickel does not exist, and the molten liquid is purified, refined and homogenized; the manganese and the nitrogen replace the nickel, direct application of nitrogen alloy in production of stainless steel is achieved, the strength of the stainless steel griddle wire is improved, magnetism does not exist, and corrosion resistance, abrasion resistance and the like are achieved; meanwhile, the cost of stainless steel production and application is reduced by over 30 percent.

Description

technical field [0001] The invention relates to a processing technology of high-nitrogen wear-resistant stainless steel ore sieve wire, in which manganese and chromium are added, vanadium-nitrogen alloy is added, and processing technologies such as smelting rolling and wire drawing are changed, which belongs to the field of stainless steel smelting and processing. Background technique [0002] At present, in order to solve the transformation and upgrading of the coal industry and open up new development paths, most coal mining enterprises across the country are taking measures to mine and screen washed coal to improve the quality of coal and increase the variety of coal. For this reason, stainless steel ore screens are mostly used for washing and screening after coal mining. Due to the 304 stainless steel mine screen used, the degree of wear resistance is not high, and the frequency of screen damage is high. The service life of a screen is only 7-15 days, which increases the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/58C22C33/04C21D8/06
Inventor 朱振发郭义贤刘龙扣马洪明康志君
Owner JIANGSU LIJIN NEW MATERIAL TECH CO LTD
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