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A kind of wear-resistant and anti-corrosion steel and its preparation method and application

A technology for anti-corrosion steel and tapping process, applied in the field of metallurgy, can solve the problems of further improvement of corrosion resistance, complex preparation process and complex composition, and achieve excellent wear resistance, long service life and good corrosion resistance. Effect

Active Publication Date: 2022-04-05
CHENGDE JIANLONG SPECIAL STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its composition is complex, the preparation process is complicated, and its corrosion resistance needs to be further improved.

Method used

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  • A kind of wear-resistant and anti-corrosion steel and its preparation method and application
  • A kind of wear-resistant and anti-corrosion steel and its preparation method and application

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0070] This embodiment provides a preparation method of wear-resistant and corrosion-resistant steel, the preparation method comprising the following steps:

[0071] (1) Hot metal pretreatment: add desulfurizer in semi-steel tank, then desulfurize and stir with 75rad / min rotating speed for 14min, S content in semi-steel after desulfurization and stirring≤0.003wt%; Described desulfurizer includes lime powder, fluorite powder With aluminum powder, the addition amount of lime powder is 12kg / t, the addition amount of fluorite powder is 2kg / t, and the addition amount of aluminum powder is 0.8kg / t;

[0072] (2) Converter treatment: the oxygen blowing time of converter treatment is 12min; the end point temperature of converter treatment is 1620°C; the end point C≤0.005wt% of converter treatment, the end point P≤0.004wt%; Add low-carbon ferromanganese, low-carbon ferrochromium, ferromolybdenum, ferrovanadium and ferrotungsten to adjust the content of C, Mn, Cr, Mo, V and W; during the...

Embodiment 2

[0081] This embodiment provides a preparation method of wear-resistant and corrosion-resistant steel, the preparation method comprising the following steps:

[0082] (1) Hot metal pretreatment: add a desulfurizer to the semi-steel tank, then desulfurize and stir at a speed of 70rad / min for 15min, after desulfurization and stirring, the S content in the semi-steel≤0.003wt%; the desulfurizer includes lime powder and fluorite powder With aluminum powder, the addition amount of lime powder is 15kg / t, the addition amount of fluorite powder is 1kg / t, and the addition amount of aluminum powder is 0.5kg / t;

[0083] (2) Converter treatment: the oxygen blowing time of converter treatment is 10min; the end point temperature of converter treatment is 1600°C; the end point C≤0.005wt% of converter treatment, the end point P≤0.004wt%; Add low-carbon ferromanganese, low-carbon ferrochromium, ferromolybdenum, ferrovanadium and ferrotungsten to adjust the content of C, Mn, Cr, Mo, V and W; duri...

Embodiment 3

[0091] This embodiment provides a preparation method of wear-resistant and corrosion-resistant steel, the preparation method comprising the following steps:

[0092] (1) Hot metal pretreatment: add a desulfurizer to the semi-steel tank, then desulfurize and stir for 12 minutes at a speed of 85rad / min, after desulfurization and stirring, the S content in the semi-steel≤0.003wt%; the desulfurizer includes lime powder and fluorite powder With aluminum powder, the addition amount of lime powder is 10kg / t, the addition amount of fluorite powder is 2.5kg / t, and the addition amount of aluminum powder is 1kg / t;

[0093] (2) Converter treatment: the oxygen blowing time of converter treatment is 15min; the end point temperature of converter treatment is 1650°C; the end point C≤0.005wt% of converter treatment, the end point P≤0.004wt%; Add low-carbon ferromanganese, low-carbon ferrochromium, ferromolybdenum, ferrovanadium and ferrotungsten to adjust the content of C, Mn, Cr, Mo, V and W;...

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Abstract

The invention provides a wear-resistant and corrosion-resistant steel and its preparation method and application. In terms of mass percentage, the wear-resistant and corrosion-resistant steel includes: C is 0.15-0.18wt%, Si is 0.25-0.35wt%, and Mn is 1.3-1.5wt%, Cr is 0.6-0.9wt%, Mo is 0.4-0.5wt%, V is 0.03-0.07wt%, W is 0.4-0.7wt%, and the balance is Fe and unavoidable impurities; the present invention The content of P and S and the level of inclusions in the obtained wear-resistant and corrosion-resistant steel are controlled by the preparation method, and the corrosion resistance thereof is improved. At the same time, by controlling the conditions of the converter, LF refining and VD smelting, the wear resistance of the obtained steel is improved, and the service life of the steel is improved.

Description

technical field [0001] The invention belongs to the technical field of metallurgy and relates to a steel material and its preparation method and application, in particular to a wear-resistant and corrosion-resistant steel and its preparation method and application. Background technique [0002] High manganese steel can resist severe impact load due to its strong toughness while resisting wear, and its safety and reliability have huge advantages over other materials. Under severe impact or contact stress, the surface of high manganese steel will harden rapidly, while the core still maintains extremely strong toughness. This property of external hardness and internal toughness is resistant to wear and impact, which is conducive to its industrial application. application. [0003] The heavier the impact on the surface of high manganese steel, the more fully the surface hardening and the better the wear resistance. After the surface is worn, the subsurface is hardened again, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/22C22C38/24C21C5/28C21C7/064C21C7/10C22C33/06
CPCC22C38/02C22C38/04C22C38/22C22C38/24C22C33/06C21C5/28C21C7/10C21C7/0645
Inventor 李自勇巩飞尹修刚
Owner CHENGDE JIANLONG SPECIAL STEEL