Abrasion and corrosion resistant nonmagnetic high-strength stainless steel

A high-strength, stainless steel technology, used in the field of wear-resistant, corrosion-resistant, non-magnetic high-strength stainless steel, can solve the problems of high cost, insufficient strength, poor wear resistance, etc., to eliminate the adverse effects of sulfur and weaken the bad effects of sulfur. Influence, the effect of improving strength and wear resistance

Inactive Publication Date: 2009-10-21
YONGXING SPECIAL STAINLESS STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional stainless steel material has been used in the manufacture of screens for a long time. This material has good processing performance and corrosion resistance, but the biggest disadvantage is that the wear resistance is not good, and the strength is not enough, and the price is very high. In actual use The service life is very short and the cost of use is high; in order to solve the above problems, the Chinese invention patent ZL95112786.1 has developed a stainless steel, its wear resistance, corrosion resistance and strength have been greatly improved, but the cost is higher than conventional stainless steel , and poor thermal processing performance, it is difficult to promote on a large scale; later, the Chinese invention patent ZL200710134321.0 disclosed a stainless steel, the percentage of its components is C: 0.06-0.11, Mn: 14-19, Si: 0 ~3, P: ≤0.054, S: ≤0.03, Cr: 16~18, N: 0.1~0.4, Cu: 1.0~2.5, Mo: 0~3, Ni: 0~2, Re: 0~0.22, remainder Amount of iron and unavoidable impurities
Its strength, plastic toughness, wear resistance and corrosion resistance are better than conventional stainless steel, and its cost has also been reduced, but its production process is difficult to control, and this material has high magnetic permeability after cold drawing processing, which cannot meet the industrial requirements. Quality requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, a wear-resistant and corrosion-resistant non-magnetic high-strength stainless steel, its chemical composition is: C0.087%, Si0.39%, Mn9.50%, P≤0.024%; S≤0.001%, Cr17.55% , Ni5.04%, N0.28%, and the rest is Fe. The form is wire rod, which adopts the following process flow: purchasing raw materials → batching → furnace loading → primary smelting in electric arc furnace → blending into argon-oxygen decarburization furnace for refining → slag pulling → alloy calculation and supplementation → decarburization → slagging → pre-reduction → Slag pulling→final reduction→refining→tapping→die casting→steel ingot grinding→heating→bullet opening→billet grinding→heating→continuous rolling→wire collection→pickling→finishing→packaging→storage. The wire rod has a tensile strength of 845 MPa, an elongation of 55%, and a reduction of area of ​​75% in the hot-rolled and pickled delivery state. According to the GB / T4334.5-2000 test method, the sample was continuously boiled in ...

example 2

[0027] Example 2, a wear-resistant and corrosion-resistant non-magnetic high-strength stainless steel, its chemical composition is: C0.089%, Si0.35%, Mn9.68%, P≤0.028%; S≤0.001%, Cr17.53%, Ni5.01%, N0.29%, and the rest is Fe. The form is wire rod, which adopts the following process flow: purchasing raw materials → batching → furnace loading → primary smelting in electric arc furnace → blending into argon-oxygen decarburization furnace for refining → slag pulling → alloy calculation and supplementation → decarburization → slagging → pre-reduction → Slag pulling→final reduction→refining→tapping→die casting→steel ingot grinding→heating→bullet opening→billet grinding→heating→continuous rolling→wire rod collection→pickling→finishing→packaging→storage. The wire rod obtained in this embodiment has a tensile strength of 835 MPa, an elongation of 54%, and a reduction of area of ​​73% in the delivery state of hot rolling and pickling. According to the GB / T4334.5-2000 test method, the s...

Embodiment 3

[0028]Embodiment 3, a wear-resistant and corrosion-resistant non-magnetic high-strength stainless steel, its chemical composition is: C0.06%, Si0.30%, Mn9.0%, P≤0.024%; S≤0.001%, Cr17.00% , Ni4.00%, N0.20%, and the rest is Fe. The form is wire rod, which adopts the following process flow: purchasing raw materials → batching → furnace loading → primary smelting in electric arc furnace → blending into argon-oxygen decarburization furnace for refining → slag pulling → alloy calculation and supplementation → decarburization → slagging → pre-reduction → Slag pulling→final reduction→refining→tapping→die casting→steel ingot grinding→heating→bullet opening→billet grinding→heating→continuous rolling→wire collection→pickling→finishing→packaging→storage. The wire rod had a tensile strength of 800 MPa, an elongation of 53%, and a reduction of area of ​​72% in the hot-rolled and pickled delivery state. According to the GB / T4334.5-2000 test method, the sample is continuously boiled in sulf...

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Abstract

The invention relates to abrasion and corrosion resistant nonmagnetic high-strength stainless steel, which comprises the following compositions by weight: 0.06 to 0.12 percent of carbon, 0.30 to 0.60 percent of silicon, 9.0 to 10.5 percent of manganese, less than or equal to 0.035 percent of phosphorus, less than or equal to 0.015 percent of sulfur, 17.00 to 18.00 percent of chromium, 4.00 to 6.00 percent of nickel, 0.20 to 0.35 percent of nitrogen, and the balance of iron. The invention improves the strength and the abrasion resistance of materials by the addition of high content of manganese element, carbon element and nitrogen element with reasonable proportioning, achieves the aim of enlarging the austenite tissue, and obviously reduces the magnetism of the stainless steel.

Description

technical field [0001] The invention relates to an austenitic stainless steel, in particular to a wear-resistant, corrosion-resistant, non-magnetic, high-strength stainless steel with low cost. Background technique [0002] With the development of the economy, there are more and more varieties of special materials required by various industries. For example, in mining and production, a large number of screens are used as consumables for mineral processing, and the service conditions are harsh. Therefore, the materials used to manufacture screens are required to have high comprehensive performance and low cost. The conventional stainless steel material has been used in the manufacture of screens for a long time. This material has good processing performance and corrosion resistance, but the biggest disadvantage is that the wear resistance is not good, and the strength is not enough, and the price is very high. In actual use The service life is very short and the cost of use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58
Inventor 王建勇吴明华邹伟民金卫强丁斌华吉建军
Owner YONGXING SPECIAL STAINLESS STEEL
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