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Special steel composition and application thereof

A composite and special steel technology, which is applied in transportation, packaging, coating, additive manufacturing, etc., can solve problems affecting performance, high brittleness, high carbon steel is easy to crack, etc., achieve good impact resistance and improve performance and service life, the effect of solving the brittleness of high carbon steel

Inactive Publication Date: 2022-05-06
僖昴晰(上海)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If you continue to increase the C content, although the hardness can be increased, the excessive brittleness will seriously affect the performance, especially the performance under high temperature conditions. to crack

Method used

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  • Special steel composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The special steel composition of this example is in powder state, with a particle size of 180 μm. In proportion by weight, the elements are:

[0057] C: 0.5%,

[0058] Si: 0.6%,

[0059] Mn: 0.3%,

[0060] Mo: 4%,

[0061] Cr: 4.5%,

[0062] V: 0.6%,

[0063] Ti: 0.08%,

[0064] Al: 0.1%,

[0065] Cu: 0.05%,

[0066] Ni: 0.02%,

[0067] P≤0.006%,

[0068] S≤0.008%,

[0069] The rest is Fe.

Embodiment 2

[0071] The special steel composition in this example is in powder state, with a particle size of 80 μm. In proportion by weight, the elements are:

[0072] C: 0.55%,

[0073] Si: 0.62%,

[0074] Mn: 0.28%,

[0075] Mo: 4.3%,

[0076] Cr: 4.7%,

[0077] V: 0.6%,

[0078] Ti: 0.085%,

[0079] Al: 0.15%,

[0080] Cu: 0.055%,

[0081] Ni: 0.025%,

[0082] P≤0.006%,

[0083] S≤0.008%,

[0084] The rest is Fe.

Embodiment 3

[0086] The special steel composition in this example is in powder state, with a particle size of 120 μm. In proportion by weight, the elements are:

[0087] C: 0.52%,

[0088] Si: 0.65%,

[0089] Mn: 0.3%,

[0090] Mo: 4.5%,

[0091] Cr: 4.9%,

[0092] V: 0.62%,

[0093] Ti: 0.085%,

[0094] Al: 0.14%,

[0095] Cu: 0.055%,

[0096]Ni: 0.023%,

[0097] P≤0.006%,

[0098] S≤0.008%,

[0099] The rest is Fe.

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Abstract

The alloy steel composition capable of being used on the surface of the mold comprises the following elements in percentage by weight: 0.5 to 0.6 percent of C, 0.5 to 0.75 percent of Si, 0.2 to 0.35 percent of Mn, 3.5 to 5 percent of Mo, 4 to 5.5 percent of Cr, 0.3 to 0.9 percent of V, 0.05 to 0.1 percent of Ti, 0.1 to 0.2 percent of Al, 0.03 to 0.1 percent of Cu, 0.01 to 0.05 percent of Ni and the balance of Fe and inevitable impurities. According to the special steel composition, the hardness of steel can be improved by adopting high carbon content, meanwhile, elements such as Si, Mn, Mo and Cr in a specific proportion are supplemented, the brittleness problem of high-carbon steel is solved, good impact resistance is obtained, and the special steel composition can be used for manufacturing a high-temperature forging die and a die-casting die or can also cover the surface of the high-temperature forging die and the surface of the die-casting die; and the service performance and the service life of the high-temperature forging die and the die-casting die are improved.

Description

technical field [0001] The invention relates to an alloy composition and its application, in particular to a special steel, its composition and its application. Background technique [0002] High-hardness steel, especially high-hardness wear-resistant steel exceeding HCR55, is generally at the expense of impact performance. Taking H13 steel as an example, in order to achieve high hardness, its C content reaches 0.35%. This kind of high C content steel is brittle and easy to crack. [0003] If you continue to increase the C content, although the hardness can be increased, the excessive brittleness will seriously affect the performance, especially the performance under high temperature conditions. cracking. Contents of the invention [0004] The application provides a special steel composition and its application, which can solve the easy-to-crack performance of traditional die steel. [0005] In the special steel composition described in this application, the elements in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50C23C24/10B22F1/065B22F10/28B33Y10/00B33Y70/00
CPCC22C38/02C22C38/04C22C38/44C22C38/46C22C38/50C22C38/06C22C38/42C23C24/106B22F10/28B33Y10/00B33Y70/00
Inventor 王圣棻
Owner 僖昴晰(上海)新材料有限公司
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