Abrasion and corrosion resistant nonmagnetic high-strength stainless steel

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 ...

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