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Preparation method for diamond embedded tool with high holding force

A diamond tool and holding force technology, which is applied in metal processing equipment, coating, transportation and packaging, etc., can solve the problem that formula adjustment is difficult to adapt to stone cutting objects and working conditions, so as to improve cutting efficiency and service life, and achieve high cutting edge , the effect of not easy to fall off

Inactive Publication Date: 2020-06-23
CHANGSHA BAICHUAN SUPERHARD MATERIAL TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the wettability can be improved to a certain extent by coating the diamond surface or adding elements that have good wettability with diamond in the matrix, the effect of diamond coating is related to the matching of the matrix, and the formula adjustment is limited and it is difficult to adapt to the complex stone industry. cutting objects and working conditions

Method used

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  • Preparation method for diamond embedded tool with high holding force
  • Preparation method for diamond embedded tool with high holding force
  • Preparation method for diamond embedded tool with high holding force

Examples

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preparation example Construction

[0027] A method for preparing a high-holding diamond inlaid tool, comprising the following steps:

[0028] The first step, diamond wrapping: take brazing powder, metal powder and hard material powder according to the ratio, mix them evenly to make a matrix, and use the method of diamond granulation to wrap the diamond with the mixed powder matrix;

[0029] Preferably, the diamond granulation method is drum granulation or spray granulation, and the powder is wrapped around the diamond. It facilitates the combination of matrix and diamond, and prevents excessive voids during sintering.

[0030] Preferably, the volume ratio of the brazing powder, metal powder and hard material powder is: brazing powder 50-100%, metal powder 0-30%, and hard powder 0-40%. More preferably, the volume ratio of brazing powder, metal powder and hard material powder in the matrix is: brazing powder 50-80%, metal powder 10-30%, hard powder 10-40% . Optimally, the volume ratio of the brazing powder, me...

Embodiment 1

[0040] The preparation steps of a high-grip inlaid diamond wire saw are as follows

[0041] The first step, diamond wrapping: Weigh NiCrP, W powder and WC powder according to the weight ratio of 7:1:2, mix them evenly, adopt the method of drum granulation, and wrap the diamond 1 with the mixed powder;

[0042] In the second step, the wrapped diamond 1 obtained in the first step is rapidly pre-sintered at 1000°C with a high-frequency induction vacuum brazing furnace to obtain diamond 2;

[0043] The third step is to granulate the FeCoNiCuSn pre-alloyed powder. After the granulation is completed, mix the granulation with the pre-sintered diamond in the second step in a ratio of 6:4, and then granulate and package for use after mixing evenly; Preferably, the mixing ratio of the granulation in the third step and the pre-sintered diamond can also be adjusted according to the needs of processing, so as to facilitate the control and adjustment of the cost of the diamond tool;

[004...

Embodiment 2

[0048] The preparation steps of a high holding force inlaid diamond tool bit are as follows

[0049] The first step, diamond wrapping: use CuCr30 brazing powder, adopt the method of spray granulation, and wrap the diamond 1 with the mixed powder;

[0050] In the second step, the wrapped diamond 1 obtained in the first step is rapidly pre-sintered at 980°C with a high-frequency induction vacuum brazing furnace to obtain diamond 2;

[0051] In the third step, FeCu30 alloy powder, Cu powder, Sn powder, and carbonyl Ni powder are mixed and granulated in a ratio of 60:15:5:20, and then the granulation is mixed with the pre-sintered diamond in the second step by 6: 4 Mix evenly, granulate again, and package for use;

[0052] In the fourth step, the diamond granulation obtained in the third step is cold-pressed into a diamond cutter head working layer;

[0053] In the fifth step, the working layer of the diamond cutter head obtained in the fourth step is stacked with iron sheets at...

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Abstract

The invention provides a preparation method for a diamond embedded tool with high holding force. The preparation method comprises the following steps of first, wrapping a diamond, namely, taking soldering powder, metal powder and hard material powder in proportion, uniformly mixing to prepare a substrate, and wrapping the diamond using the mixed powder substrate by a diamond granulating method; second, pre-sintering; third, preparing a base body, namely, weighing and mixing body metal powder in proportion, granulating, weighing and uniformly mixing the body and the diamond fired in the secondstep in a certain proportion, and granulating to form the base body; fourth, performing cold pressing and forming; and fifth, sintering. According to the preparation method for the diamond embedded tool with the high holding force, excellent diamond holding force can be obtained the base body of a wrapping layer; the body, with different physical properties, not affecting the holding force of thediamond can be obtained by adjusting by utilizing great adjusting degree of freedom of the base body, and finally, the diamond tool with the high holding force is obtained; during working, the diamonddoes not fall off easily; the diamond protrudes high; and the improvement of the cutting efficiency and the prolonging of the service life of the diamond tool are facilitated.

Description

technical field [0001] The invention relates to an inlaid diamond tool, in particular to a preparation method of an inlaid diamond tool with high holding force. Background technique [0002] Inlaid diamond tools are generally inlaid or impregnated with diamonds in a binder matrix (metal, ceramic or resin, etc.) to form a certain structure, and the diamond is fixed and supported (held) by the matrix to act on (cutting, grinding) the processing object , where the bonding strength between the binder matrix and the diamond plays a key role in the performance of the diamond tool. The high bonding strength makes the diamond have a higher holding force in the carcass, the diamond is not easy to fall off during work, and the cutting edge is high, which can improve the cutting efficiency and service life of the tool. [0003] Sintered metal bond inlaid diamond tools based on powder metallurgy technology are widely used in stone mining, processing, building construction and other ind...

Claims

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Application Information

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IPC IPC(8): B22F5/00B22F1/02B22F3/02B22F3/10B22F3/14
CPCB22F5/00B22F3/02B22F3/1007B22F3/14B22F2005/001B22F2998/10B22F1/17B22F3/10
Inventor 谢吉黄鹏罗文覃光明杨跃飞
Owner CHANGSHA BAICHUAN SUPERHARD MATERIAL TOOLS
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