cBN-high speed steel composite material and preparation method thereof

A technology of composite materials and high-speed steel, applied in the field of cBN, can solve problems such as high sintering temperature and cBN erosion, achieve excellent pressing performance, prevent powder segregation, and get rid of high cost

Inactive Publication Date: 2017-05-31
长沙市萨普新材料有限公司
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AI Technical Summary

Problems solved by technology

[0004] However, the sintering temperature of traditional high-alloy high-speed steel atomized powder is also higher than 1250 °C, and the local eutectic liquid phase in the traditional supersolid liquid phase sintering process (SLPS) will corrode cBN, that is, react with cBN and cause cBN decomposition

Method used

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  • cBN-high speed steel composite material and preparation method thereof
  • cBN-high speed steel composite material and preparation method thereof
  • cBN-high speed steel composite material and preparation method thereof

Examples

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Embodiment Construction

[0032] Beneficial effects of the present invention will be further described below by way of examples.

[0033] The difference between Examples 1-5 is only that: the proportioning ratio of the high-speed steel precursor powder mixture is different, and correspondingly the composition of the cBN-high-speed steel composite material is also different; the difference between Examples 3 and 6-9 is only that: the high-speed steel The proportion of carbides in the precursor powder mixture is different, and correspondingly the composition of the cBN-high-speed steel composite material is also different; the difference between Examples 3 and 10-13 is only: the cBN-high-speed steel composite material precursor powder mixture The proportions are different, and correspondingly the composition of the cBN-high-speed steel composite material is also different; see Table 3 for details, wherein the carbide powder is composed of WC powder, Mo 2 C powder, Cr 3 C 2 powder and VC powder, WC powd...

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Abstract

The invention discloses a high speed steel precursor powder mixture used for preparing a cBN-high speed steel composite material. The high speed steel precursor powder mixture comprises, by mass, 3%-15% of Co powder, 32%-75% of Fe powder, 20%-50% of carbide powder selected from Group 4 metal, Group 5 metal and Group 6 metal of the periodic table of the elements, and 0-2% of C powder. The cBN-high speed steel composite material comprises, by mass, 1%-30% of cBN, 2.7%-13.5% of Co, 1.7%-5.4% of C, 14%-45% of Group 4 metal, Group 5 metal and Group 6 metal selected from the periodic table of the elements, and 40.6%-67.5% of Fe. Non-atomized powder is adopted to replace atomized powder, a local eutectic liquid phase can be avoided, erosion to cBN by the local eutectic liquid phase is prevented, the cBN can be kept stable, and therefore usability of the final cBN-high speed steel composite material is improved.

Description

technical field [0001] The present invention relates to the technical field of cBN, in particular to a high-speed steel precursor powder mixture for preparing a cBN-high-speed steel composite material, a cBN-high-speed steel composite material prepared from the high-speed steel precursor powder mixture, and the cBN-high-speed steel Methods of preparation of composite materials. Background technique [0002] When the use of turning instead of grinding has become a development trend, and the requirements for processing and finishing of superhard materials are getting higher and higher, the development of superhard material cutting tools is extremely critical. Cubic boron nitride (cBN) cutting tools have extremely excellent performance. The preparation of traditional polycrystalline cBN sintered bodies is mainly prepared by ultra-high temperature-ultrahigh pressure methods, such as a high-toughness cubic boron nitride sintered material and In the preparation method, the pressu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/36C22C38/30C22C38/22C22C38/24C22C38/32C22C33/02C21D1/18C21D1/32
CPCC22C38/36C21D1/18C21D1/32C22C33/0207C22C33/0285C22C33/0292C22C38/22C22C38/24C22C38/30C22C38/32
Inventor 陈豫章陈利宏
Owner 长沙市萨普新材料有限公司
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