High-strength wear-resistant nonmagnetic stainless steel and preparation method thereof

Abstract

The invention discloses a high-strength wear-resistant nonmagnetic stainless steel and a preparation method thereof. The high-strength wear-resistant nonmagnetic stainless steel is composed of the following components in percentage by weight: 0.1%-0.18% of carbon, 8%-11% of nickel, 19%-21% of chromium, 1%-2% of manganese, 0.5%-1% of silicon, 0.48%-0.65% of niobium, 0.11%-0.14% of vanadium, 1.2%-2.0% of molybdenum, 0.021%-0.03% of titanium, 0.01%-0.1% of aluminum, 0.8%-2% of nitrogen, 0.2%-0.3% of rare earth, not more than 0.035% of phosphorus and sulfur, and the balance of iron thereof inevitable impurities. The high-strength wear-resistant nonmagnetic stainless steel has the advantages of favorable corrosion resistance, favorable intercrystalline corrosion resistance, favorable oxidation resistance, favorable acid / alkali resistance, high strength and high hardness.

Description

technical field

[0001] The invention relates to an alloy material, in particular to a high-strength wear-resistant non-magnetic stainless steel and a preparation method thereof. Background technique

[0002] At present, the non-magnetic steel widely used in domestic industry is 18-8 austenitic stainless steel, and the smelting and processing technology of non-magnetic steel is very mature in China. However, as people's performance requirements for materials are getting higher and higher, the strength and wear resistance of the material during use can no longer meet people's requirements, especially when working in marine environments, its corrosion resistance and wear resistance Significantly insufficient performance, not only affects the appearance quality, but also greatly affects the service life of the material, resulting in increased costs and prone to safety accidents. Contents of the invention

[0003] The purpose of the present invention is to provide a high-stren...

Examples

Embodiment 1

[0026] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...

Embodiment 2

[0031] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...

Embodiment 3

[0036] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...

technical field

[0001] The invention relates to an alloy material, in particular to a high-strength wear-resistant non-magnetic stainless steel and a preparation method thereof. Background technique

[0002] At present, the non-magnetic steel widely used in domestic industry is 18-8 austenitic stainless steel, and the smelting and processing technology of non-magnetic steel is very mature in China. However, as people's performance requirements for materials are getting higher and higher, the strength and wear resistance of the material during use can no longer meet people's requirements, especially when working in marine environments, its corrosion resistance and wear resistance Significantly insufficient performance, not only affects the appearance quality, but also greatly affects the service life of the material, resulting in increased costs and prone to safety accidents. Contents of the invention

[0003] The purpose of the present invention is to provide a high-stren...

Examples

Embodiment 1

[0026] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...

Embodiment 2

[0031] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...

Embodiment 3

[0036] 1. The preparation method of high-strength wear-resistant and non-magnetic stainless steel: put the raw material iron into the converter to heat and melt, after the raw material iron is completely melted, adjust the temperature of the molten pool so that the temperature of the molten pool is controlled at about 1550 ° C, and then pour it into the molten pool Add decarburizer, desulfurizer, and deoxidizer to decarburize, desulfurize, and deoxidize the molten iron in the molten pool; then raise the temperature of the molten pool to about 1600°C, keep it for 5 minutes, and then continuously add high Carbon ferrochromium, ferromanganese and nickel particles, so that the chromium content, manganese content, and nickel content in the molten pool meet the predetermined requirements, and continue to add decarburizers for decarburization. After the iron is melted, adjust the temperature to control the temperature at Keep at 1600°C for 5 minutes, then add ferromolybdenum, ferrovan...