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Ultrahigh thermal conductivity wear-resistant hot stamping die steel and manufacturing method thereof

A hot stamping die, ultra-high heat technology, applied in the field of ultra-high thermal conductivity wear-resistant hot stamping die steel materials and its preparation, can solve problems such as increasing costs

Inactive Publication Date: 2014-08-20
SHANGHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the patent application CN201080014370.0 also added a variety of trace alloy elements, such as Ta, Zr, Nb, Cu, Co, etc. The addition of these elements will greatly increase the cost of this product

Method used

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  • Ultrahigh thermal conductivity wear-resistant hot stamping die steel and manufacturing method thereof
  • Ultrahigh thermal conductivity wear-resistant hot stamping die steel and manufacturing method thereof
  • Ultrahigh thermal conductivity wear-resistant hot stamping die steel and manufacturing method thereof

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Embodiment 1

[0063] Present embodiment has produced a kind of steel, and its concrete composition is as follows:

[0064] C: 0.37%; Si: 0.06%; Mn: 0.12%; W: 1.65%; Mo: 4.43%; Cr: 0.12%; V: 0.12%;

[0065] The rest is Fe and unavoidable impurity elements, S: ≤0.01% in impurity elements; P: ≤0.02%; O: ≤30ppm

[0066] The preparation process and heat treatment process are as follows:

[0067] (a) Smelting: After the alloy is designed according to the above composition, it is smelted according to the traditional method, and the batch material in the above formula is placed in the electric furnace, and smelted at 1550°C; then the steel ingot is poured, and the next step is ready for use;

[0068] (b) Electroslag remelting: After electroslag remelting, the content of gas and inclusions can be reduced, and steel ingots with uniform composition, compact structure and high quality can be obtained;

[0069] (c) Annealing: heat at 750°C for 8 hours and then cool with the furnace;

[0070] (d) Homo...

Embodiment 2

[0076] Present embodiment has produced a kind of steel, and its concrete composition is as follows:

[0077] C: 0.36%; Si: 0.07%; Mn: 0.14%; W: 1.70%; Mo: 4.51%; Cr: 0.12%; V: 0.14%;

[0078] The rest is Fe and unavoidable impurity elements, S: ≤0.01% in impurity elements; P: ≤0.02%; O: ≤30ppm

[0079] The preparation process and heat treatment process are as follows:

[0080] (a) Smelting: After the alloy is designed according to the above composition, it is smelted according to the traditional method, and the batch material in the above formula is placed in an electric furnace, and smelted at 1500°C; then the steel ingot is poured, and the next step is ready for use;

[0081] (b) Electroslag remelting: After electroslag remelting, the content of gas and inclusions can be reduced, and steel ingots with uniform composition, compact structure and high quality can be obtained;

[0082](c) Annealing: heat at 800°C for 10 hours and then cool with the furnace;

[0083] (d) Homog...

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Abstract

Belonging to the technical field of alloy steel preparation processes, the invention relates to an ultrahigh thermal conductivity wear-resistant hot stamping die steel and a manufacturing method thereof. Current hot stamping die steel on the market is mainly various improved H13, H11 and other high alloy hot work die steel. The steel provided by the invention comprises the following components by mass percent: 0.33-0.40% of C; less than 0.30% of Si; less than 0.30% of Mn; 1.0-2.0% of W; 4.0-5.0% of Mo; less than 0.30% of Cr; 0.10-0.20% of V; and the balance Fe and inevitable impurities. And in the impurity elements, S is smaller than or equal to 0.01%; P is smaller than or equal to 0.01%; and O is smaller than or equal to 30ppm. The steel is characterized in that: simple C, Mo and W are adopted as the main elements to coordinate the ratio of carbides; low Mn, low Cr and low Si content are maintained; after electric furnace smelting, electroslag remelting, annealing, high temperature homogenization, forging and annealing, the material has good machining properties; and after heat treatment, the material has excellent impact toughness, tempering stability and thermal fatigue performance. With ultrahigh thermal conductivity, the steel can be more suitable for hot stamping.

Description

technical field [0001] The invention relates to an ultra-high thermal conductivity wear-resistant hot stamping die steel material and a preparation method thereof, belonging to the technical field of alloy steel preparation technology. Background technique [0002] The quality level of die steel is often an objective measure of a country's manufacturing level. According to different service conditions, the industry roughly divides mold steel into three categories: hot work mold steel, cold work mold steel and plastic mold steel. With the rapid development of the modern automobile industry, the demand for automobiles around the world is also rising. Around how to improve the efficiency and cost of automobile production, material workers continue to improve the production and processing technology of parts. In the previous production process, the cold stamping process was often used. When obtaining ultra-high-strength steel, the forming force required by the cold stamping p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/12C22C38/24C21D8/00
Inventor 吴晓春李爽曹奇黎欣欣张铮吴博雅
Owner SHANGHAI UNIV
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