Low-cost 40CrV tool steel and production method thereof

A production method and low-cost technology, applied in the field of alloy structural steel, can solve problems such as performance stability, high uniformity requirements, fracture damage, etc.

Inactive Publication Date: 2019-07-19
JIANGSU LIHUAI IRON AND STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current tool steel is generally made of 40CrV steel, and its performance is relatively stable, but the steel prepared from the tool steel has high requirements on the performance stability and uniformity in the same section during use, otherwise it will cause the tool to be damaged during use. Due to the unbearable force on the tool itself, it will be broken and damaged; in addition, during use, the tool will also be subject to some impact force, which requires tool steel to have better impact resistance and willfulness

Method used

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  • Low-cost 40CrV tool steel and production method thereof
  • Low-cost 40CrV tool steel and production method thereof
  • Low-cost 40CrV tool steel and production method thereof

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Experimental program
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Embodiment 1~3

[0062] Select high-quality scrap steel, strictly prohibit the use of scrap steel containing high Cu, Pb and other harmful residual elements, and control Cu≤0.20%;

[0063] Before tapping, the alloy is added to the ladle for pre-baking;

[0064] Strictly control the composition of the steel, and strictly prohibit the slag from the steel;

[0065] Control the tapping temperature well, and strictly prohibit low-temperature tapping;

[0066] Strictly follow the process requirements to control the end point components to prevent molten steel from peroxidation;

[0067] 1) LD / EAF:

[0068] When tapping from LD or EAF, adjust the amount of aluminum cake according to the tapping carbon, and add 80-120Kg to each furnace;

[0069] 2) LF:

[0070] During LF smelting, alloy is added in the early stage of refining, and the slag surface is deoxidized at the same time; according to the S content at the station, the amount of lime in the slag material and the amount of refining slag in th...

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PUM

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Abstract

The invention discloses low-cost 40CrV tool steel and a production method thereof. The low-cost 40CrV tool steel is prepared from the following components in percentage by weight: 0.38%-0.43% of C, 0.15%-0.35% of Si, 0.60%-0.90% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, less than or equal to 0.20% of Cu, 0.50%-0.70% of Cr, 0.05%-0.08% of V, 0.010%-0.030% of Al, less than or equal to 0.04% of Ti and the balance of Fe. According to the composition ratio and the production method of the low-cost 40CrV tool steel, through the perfect combination of the optimizeddesign of the chemical components, the stable control of the steelmaking and steel rolling production processes and the controlled rolling and controlled cooling technology (rolling parameters), the smelting process, the starting and finishing rolling temperatures and the cooling mode of the formula are strictly controlled to realize the production of the low-cost 40CrV tool steel.

Description

technical field [0001] The invention relates to the field of alloy structural steel, in particular to a low-cost 40CrV tool steel and a production method thereof. Background technique [0002] At present, the market competition in the industrial tool industry is becoming more and more fierce. It has become one of the development trends of the industrial tool industry for various manufacturing companies to pursue the stability of the product quality of industrial tools and reduce manufacturing costs. By optimizing the chemical composition of raw materials and stabilizing the control of the production process, product quality can be improved, product cost can be reduced, and the industry competitiveness of industrial enterprises can be enhanced. [0003] The current tool steel is generally made of 40CrV steel, and its performance is relatively stable, but the steel prepared from the tool steel has high requirements on the performance stability and uniformity in the same sectio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C38/02C22C38/04C22C38/06C22C38/20C22C38/24C22C38/28
CPCC22C33/06C22C38/002C22C38/02C22C38/04C22C38/06C22C38/20C22C38/24C22C38/28
Inventor 吉光肖波郑力宁许正周
Owner JIANGSU LIHUAI IRON AND STEEL CO LTD
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