High-temperature diamond-impregnated drill bit matrix and manufacturing method of drill bit

A diamond-impregnated, high-performance technology, which is applied in the field of drill bits for processing structural ceramics and its preparation, can solve the problems of reducing the processing efficiency and service life of diamond drill bits, and the inability to maintain the same wear speed of diamond abrasive grains, so as to achieve good wear resistance, Few cracks, the effect of ensuring the same

Active Publication Date: 2016-05-25
莱州市原野科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main disadvantage of impregnated diamond drill bits is that the wear rate of the diamond abrasive grains cannot be kept the same as that of the matrix. Too fast or too slow wear of the matrix will reduce the processing efficiency and processing life of the diamond drill bit.

Method used

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  • High-temperature diamond-impregnated drill bit matrix and manufacturing method of drill bit
  • High-temperature diamond-impregnated drill bit matrix and manufacturing method of drill bit
  • High-temperature diamond-impregnated drill bit matrix and manufacturing method of drill bit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Raw material: 50 parts of pure Cu powder, 25 parts of pure Co powder, 15 parts of pure Sn powder, 5 parts of pure Ti powder, 5 parts of pure Cr powder.

[0023] Preparation method: (1) Mix the above raw materials to form a carcass, mix the diamond with a concentration of 75% with the carcass, put it into a graphite mold, control the temperature at 660 ° C, and the pressure at 14.7 MPa, and hot-press sintering; when the mixture When it is close to the plastic state, it is pressurized and sintered to form a diamond sintered body; (2) heat the diamond sintered body for 2 minutes, and then cool it to room temperature; (3) after the diamond sintered body is cooled, it is brazed and fixed on the metal substrate. into a diamond drill.

[0024] Here, "diamond with a concentration of 75%" means that the diamond concentration is 75%. The diamond concentration adopts a 400% concentration system, that is, when the diamond concentration is 100%, the diamond volume concentration in ...

Embodiment 2

[0026] Raw material: 45 parts of pure Cu powder, 30 parts of pure Co powder, 12 parts of pure Sn powder, 3 parts of pure Ti powder, 8 parts of pure Cr powder.

[0027] The preparation method refers to Example 1, the difference is that the controlled temperature is 680° C., the pressure is 14.6 MPa, and the holding time is 1.8 min.

Embodiment 3

[0029] Raw material: 55 parts of pure Cu powder, 20 parts of pure Co powder, 18 parts of pure Sn powder, 8 parts of pure Ti powder, 3 parts of pure Cr powder.

[0030] The preparation method refers to Example 1, except that the controlled temperature is 700° C., the pressure is 14.8 MPa, and the holding time is 2.4 minutes.

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Abstract

The invention discloses a high-temperature diamond-impregnated drill bit matrix and a manufacturing method of a drill bit. The matrix comprises, by weight, 45-55 parts of pure Cu powder, 20-30 parts of pure Co powder, 12-18 parts of pure Sn powder, 3-8 parts of pure Ti powder and 3-8 parts of pure Cr powder. The matrix can be closely combined with diamond and has good performance in binding with diamond and good wear characteristics. The manufacturing method of the high-performance diamond-impregnated drill bit comprising the matrix includes steps of matrix preparation, mixing with diamond, hot-press sintering, temperature holding, cooling and brazing. The diamond-impregnated drill bit manufactured by the method has high wear resistance and machining quality, and working life of the drill bit when being used for machining structural ceramic can reach higher than 2200mm.

Description

technical field [0001] The invention relates to a drill for processing structural ceramics and a preparation method thereof, in particular to a high-performance impregnated diamond drill matrix and a preparation method of the drill. Background technique [0002] With the global industry's increasingly stringent requirements for high-precision, high-wear, high-reliability mechanical components or electronic components, the market growth rate of ceramic products has become increasingly impressive. Structural ceramics have superior strength, hardness, insulation, heat conduction, high temperature resistance, oxidation resistance, corrosion resistance, wear resistance, high temperature strength and other properties, and can also show stability in very harsh engineering application conditions or environments Excellent mechanical properties, so it has attracted much attention in the material industry, and its application range is expanding day by day. These properties of structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/46B22F1/00C22C30/04C22C30/02C22C9/06B22F3/14B22F5/00
CPCB22F1/0003B22F3/14B22F5/00B22F2005/001C22C9/06C22C30/02C22C30/04E21B10/46
Inventor 高超吴国荣王生
Owner 莱州市原野科技有限公司
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