Low-temperature sintered matrix powder, diamond tool using the matrix powder and preparation method thereof

A low-temperature sintering and diamond tool technology, which is applied in metal processing equipment, transportation and packaging, etc., can solve the problems of large mold loss and energy consumption, large diamond damage, and the cutting effect of diamond particles cannot reach the predetermined effect.

Active Publication Date: 2021-03-16
BEIJING GANG YAN DIAMOND PROD CO +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the sintering temperature of diamond tools is mostly above 800°C, which greatly damages the diamond, so that the cutting effect of diamond particles in the tool cannot achieve the predetermined effect; at the same time, the loss of the mold and energy consumption during the sintering process are also very large

Method used

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  • Low-temperature sintered matrix powder, diamond tool using the matrix powder and preparation method thereof
  • Low-temperature sintered matrix powder, diamond tool using the matrix powder and preparation method thereof
  • Low-temperature sintered matrix powder, diamond tool using the matrix powder and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0052] In Example 1, the specifications of the integrally sintered saw blade are: diameter 305 mm, blade height 10 mm, blade thickness 2.2 mm, substrate thickness 1.8 mm, laser equidistant cutting into tooth structures. The composition of the matrix powder in the diamond saw blade is: Cu60wt%, Co 20wt%, Sn 17wt%, graphite 2wt%, and amorphous powder AP-01 1wt%, among which Cu powder and amorphous powder AP-01 are processed by high-energy ball milling (The rotation speed is 400 rpm, the ball milling time is 20 hours). The median diameter D50 of Cu powder and amorphous powder AP-01 is 2.5 μm, and the diamond particle size used is 180 μm to 270 μm. 3% of the mass; the matrix is ​​made of 75Cr1 and used after quenching.

[0053] The preparation steps of the overall low-temperature sintered diamond saw blade in this embodiment are as follows:

[0054] 1) Mixing: add 2% glycerol alcohol solution with a mass fraction of 2% to the metal carcass powder mixed according to the above mass...

Embodiment 2

[0063]In Example 2, the specifications of the integral sintered saw blade are: diameter 254 mm, blade height 10 mm, blade thickness 1.6 mm, base thickness 1.4 mm, laser equidistant cutting into tooth structure. The matrix powder composition of diamond circular saw blade is: Cu65wt%, Co15wt%, Sn13wt%, Ni 5wt%, amorphous powder AP-01 2wt%, wherein Cu powder and amorphous powder AP-01 are high-energy ball milling (rotating speed is 400 rev / min, ball milling time 20 hours) ultra-fine particle size powder, Cu powder median diameter D50 is 7.5μm, amorphous powder AP-01 median diameter D50 is 7.5μm, the diamond particle size used is 210μm~270μm, the addition ratio It is 1.5% of the mass of the cutter head. The matrix is ​​made of 65Mn and used after quenching.

[0064] The preparation steps of the overall low-temperature sintered diamond saw blade in this embodiment are as follows:

[0065] 1) Mixing: adding the metal matrix powder in the above mass percentage to 2% glycerol alcoho...

Embodiment 3

[0074] In Example 3, the specifications of the integrally sintered saw blade are: diameter 356 mm, blade height 7 mm, blade thickness 2.8 mm, base thickness 2.4 mm, continuous edge structure. The matrix powder composition of diamond saw blade is: Cu 70wt%, Co 15wt%, Sn10wt%, the prealloy powder (FOLLOW500) 5wt% that contains rare earth element, wherein Cu and contain rare earth element prealloy powder are high-energy ball milling treatment (rotating speed is 400 rev / min, ball milling time 20 hours) ultra-fine particle size powder, the Cu powder median diameter D50 is 1.5μm, the median diameter D50 of the pre-alloyed powder containing rare earth elements is 7.5μm, the diamond particle size used is 90μm~110μm, the addition ratio It accounts for 2% of the mass of the cutter head. The substrate is made of 75Cr1 and used after quenching.

[0075] The preparation steps of the overall low-temperature sintered diamond saw blade in this embodiment are as follows:

[0076] 1) Mixing: ...

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Abstract

The invention discloses a low-temperature sintered carcass powder, a diamond tool using the carcass powder and a preparation method thereof. The carcass powder is composed of the following components according to mass percentage: Sn 5%-17%, Co 5%-25%, Me 1%-10%, the rest is Cu and unavoidable impurities, wherein Me is selected from amorphous At least one of powder, pre-alloyed powder containing rare earth elements, Ni, and graphite. The carcass powder of the present invention is a copper-based carcass powder, so that the sintering temperature is significantly reduced, energy consumption is reduced, mold loss is reduced, and production costs are reduced; at the same time, damage to diamonds during high-temperature sintering is reduced, and tools can be appropriately reduced. The grade of diamond used reduces the material cost of the tool.

Description

technical field [0001] The invention relates to the field of superhard materials, in particular to a low-temperature sintered carcass powder, a diamond tool containing the carcass powder and a preparation method thereof. Background technique [0002] Diamond tools are widely used in construction, geology, machinery and other fields due to their superior cutting, grinding and wear-resistant properties. Efficient tool. The vast majority of diamond tools are impregnated tools that are formed by mixing binders with synthetic diamond particles, forming and sintering. The diamond particles mainly play the role of cutting edge, the matrix binder mainly plays the role of fixing the diamond particles, so as to fully and efficiently play the cutting and grinding functions of the diamond particles, and the matrix plays the role of support and protection. [0003] Among diamond tools, diamond saw blades, diamond drill bits and diamond grinding wheels are the three most important types...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F1/00C22C30/02C22C30/04C22C9/02C22C9/06B22F5/00
CPCB22F1/0003C22C9/02C22C9/06C22C30/02C22C30/04B22F5/00B22F2005/001B22F2998/10B22F1/10B22F3/10B22F3/02
Inventor 张健琼杨志威刘一波刘琨葛科
Owner BEIJING GANG YAN DIAMOND PROD CO
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