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High-performance and high-speed-stamping cold work die steel and preparation method thereof

A technology of cold work die steel and high-speed stamping, which is applied in the field of iron and steel smelting, can solve the problems of cold work die steel red hardness, insufficient thermal stability and wear resistance, and achieve the effect of improving hardenability and preventing temper brittleness

Inactive Publication Date: 2016-11-09
GUANGDONG STRONG METAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] One of the purposes of the present invention is to provide a high-speed stamping cold-work die steel to solve the problems of insufficient red hardness, thermal stability and wear resistance of cold-work die steel in the prior art; it can meet the requirements of high-speed stamping and high-speed cold rolling working conditions
[0007] The second object of the present invention is to provide a method for preparing high-speed stamping cold-work die steel in order to solve the problems of insufficient red hardness, thermal stability and wear resistance of cold-work die steel in the prior art

Method used

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  • High-performance and high-speed-stamping cold work die steel and preparation method thereof
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  • High-performance and high-speed-stamping cold work die steel and preparation method thereof

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specific Embodiment 1

[0041] A high-speed stamping cold work die steel involved in this embodiment, the main material components include C, Si, Mn, P, S, Cr, Mo, W, V, Al, Cu and Ni, the mass percentage of each material component Contents are: C 0.85-0.95%, Si 0.80-1.20%, Mn 0.30-0.60%, P≤0.025, S≤0.015, Cr 7.90-8.40%, Mo 1.40-1.70%, W 1.90-2.20%, V 2.20 -2.50%, Al 0.90-1.20%, Cu≤0.20, Ni≤0.25; the balance is Fe.

[0042] The preparation method of a kind of high-speed stamping cold working die steel that this embodiment relates to is characterized in that:

[0043] 1) Prepare raw materials for high-speed stamping cold work die steel according to the set material composition, and prepare basic electric arc furnace or induction melting furnace;

[0044] 2) The smelting process adopts the oxidation method or the return method;

[0045] When the oxidation method is used for smelting, the melted carbon is more than 0.40% of the finished carbon in the batching, and the sulfur and phosphorus content of ...

specific Embodiment 2

[0075] The characteristics of the specific embodiment 2 of the present invention are: the high-speed stamping cold work die steel involved, the main material component is to reduce Cu and Ni on the basis of claim 1, that is, the main material component includes C, Si, Mn, P, S , Cr, Mo, W, V and Al, the mass percentages of each material component are: C 0.85-0.95%, Si 0.80-1.20%, Mn0.30-0.60%, P≤0.02, S≤0.015, Cr 7.90-8.40%, Mo 1.40-1.70%, W 1.90-2.20%, V 2.20-2.50%, Al 0.90-1.20%; the balance is Fe. Its preparation method is with specific embodiment 1.

[0076] Compared with the existing high toughness and high wear resistance cold working die steel, the new steel type of the present invention has the following outstanding advantages:

[0077] 1. Compared with my country's 7Cr7Mo3V2Si steel, the DC53 steel of Datong Company of Japan and the SLD-8 steel of Hitachi Metal Company have higher tempering hardness; see Figure 9 , quenched at 1130-1150°C, and tempered at 530°C, th...

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Abstract

The invention relates to high-speed-stamping cold work die steel and a preparation method thereof. The high-speed-stamping cold work die steel is characterized by primarily comprising, by mass, 0.85%-0.95% of C, 0.80%-1.20% of Si, 0.30%-0.60% of Mn, 0.025% or less of P, 0.015% or less of S, 7.90%-8.40% of Cr, 1.40%-1.70% of Mo, 1.90%-2.20% of W, 2.20%-2.50% of V, 0.90%-1.20% of Al, 0.20% or less of Cu, 0.25% or less of Ni, and the balance Fe. By adding the alloy element, namely Al, the hardness, red hardness and the surface hardness and heat stability after nitriding of the steel are further improved; through addition of Mo, the hardenability, heat resistance, temper embrittlement resistance and temper softening resistance of the steel can be improved; and the high-speed-stamping cold work die steel has the remarkable beneficial effects of having high hardness, heat hardness and heat stability, meeting the development demand of modern industry, reducing consumption and increasing social benefits.

Description

technical field [0001] The invention relates to a high-speed stamping cold-working die steel and a preparation method thereof. It belongs to the technical field of iron and steel smelting. Background technique [0002] With the rapid development of economic globalization and industrial technology, many industrial products rely on molds for production, for example; Shaped with a mold. Most of the molds of industrial products are also made of mold steel. Die steels are almost all alloy steels, which are mainly divided into three categories: cold work die steels, hot work die steels and plastic die steels. The consumption of cold work die steel accounts for about 40% of the total consumption of die steel. my country is the country with the largest consumption of die steel in the world. Cold work die steel is widely used, and blanking dies, upsetting dies, extrusion dies, and drawing dies used in various cold states are widely used in factory production. [0003] At presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/02C22C38/04C22C38/12C22C38/06C22C38/16C22C38/08
CPCC22C38/18C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/16
Inventor 黎炳雄董小虹梁航
Owner GUANGDONG STRONG METAL TECH
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