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Synthesis process of self-sharpening resin diamond

A synthesis process and diamond technology, applied in the field of self-sharpening resin diamond synthesis process, can solve the problems of few single crystal abrasive grain cutting edges, unsatisfactory use effect, affecting the sharpness of grinding, etc., and achieve rough surface and self-sharpening. Good, low cost effect

Inactive Publication Date: 2015-03-25
河南金六方超硬材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, low-strength diamond abrasives, mainly single crystal diamond particles, are used in the manufacture of resin bonded abrasives and vitrified bonded abrasives at home and abroad, and the use effect is not ideal.
There are mainly the following problems: (1) The surface is smooth, not rough enough, and the mechanical combination (engagement) with the binder is not strong
(2) During the grinding process, the entire abrasive grain often falls off prematurely
(4) There are few cutting edges of single crystal abrasive grains, the area of ​​cutting edges is large, and the required grinding force is large, which affects the sharpness of grinding
However, this approach is only a measure taken from the outside of the particle, and does not solve the problem from the essence of the particle

Method used

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  • Synthesis process of self-sharpening resin diamond
  • Synthesis process of self-sharpening resin diamond

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A self-sharpening resin diamond synthesis process is characterized in that it comprises the following main steps:

[0019] A. Fully mix 200-mesh graphite powder and nickel-based alloy catalyst powder at a weight ratio of 7:3. The components of the nickel-based alloy catalyst powder are recorded by weight ratio: Mn: 20%, Fe: 2%, Cr: 0.07%, Co: 0.001%, dispersant: 1%, and the balance is Ni.

[0020] B. Put the mixture in step A into a three-dimensional mixer and mix for 10 hours. After isostatic pressing, crush it to 50 mesh or finer. Do vacuum deoxidation at 800°C in a vacuum furnace for 60 minutes, and cool naturally to At room temperature, a mixed material was obtained.

[0021] C. Fill the mixed material in step B into the mold, and use a four-column press to press it into a columnar composite rod. The size of the composite rod is φ34×33mm, and the density of the composite rod is 2.1g / cm 3 .

[0022] D. Assemble the synthetic rod of step C with pyrophyllite, conduc...

Embodiment 2

[0027] A self-sharpening resin diamond synthesis process is characterized in that it comprises the following main steps:

[0028] A. 250 mesh graphite powder and nickel-based alloy catalyst powder are fully mixed in a ratio of 7: 4.5 by weight. The components of the nickel-based alloy catalyst powder are recorded by weight ratio: Mn: 28%, Fe: 3%, Cr: 0.073%, Co: 0.0013%, dispersant: 1.5%, and the balance is Ni.

[0029] B. Put the mixture in step A into a three-dimensional mixer and mix for 11 hours. After isostatic pressing, crush it to 50 mesh or finer. Do vacuum deoxidation at 850°C in a vacuum furnace for 65 minutes, and cool naturally to At room temperature, a mixed material was obtained.

[0030] C. Fill the mixed material in step B into the mold, and use a four-column press to press it into a columnar composite rod. The size of the composite rod is φ34×33mm, and the density of the composite rod is 2.4g / cm 3 .

[0031] D. Assemble the synthetic rod of step C with pyro...

Embodiment 3

[0036] A self-sharpening resin diamond synthesis process is characterized in that it comprises the following major steps:

[0037] A, 350 mesh graphite powder and nickel-based alloy catalyst powder are fully mixed in a ratio of 7: 6 by weight. The components of the nickel-based alloy catalyst powder are recorded by weight ratio: Mn: 35%, Fe: 5%, Cr0.08%, Co: 0.002%, dispersant: 2%, and the balance is Ni.

[0038] B. Put the mixture in step A into a three-dimensional mixer and mix for 12 hours. After isostatic pressing, crush it to a finer size than 50 mesh. Do vacuum deoxygenation at 900°C in a vacuum furnace for 70 minutes, and cool naturally to At room temperature, a mixed material was obtained.

[0039] C. Fill the mixed material in step B into the mold, and use a four-column press to press it into a columnar composite rod. The size of the composite rod is φ34×33mm, and the density of the composite rod is 2.7g / cm 3 .

[0040] D. Assemble the synthetic rod of step C with py...

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Abstract

The invention discloses a synthesis process of self-sharpening resin diamond. The synthesis process comprises the following main steps of: sufficiently mixing 200-350-mesh graphite powder with nickel-based alloy catalyst powder in the weight ratio of 7:(3-6), placing a mixture into a three-dimensional mixer for mixing for 10-12 hours, grinding into 50-mesh fine powder after isostatic pressing, carrying out vacuum deaeration at 800-900 DEG C in a vacuum furnace for 60-70 minutes, naturally cooling to the room temperature to obtain a mixed material, filling the mixed material into a mould, and pressing into a columnar synthetic rod by utilizing a four-column pressing machine, wherein the dimension of the synthetic rod is phi 34*33mm, and the density of the synthetic rod is 2.1-2.7g / cm<3>; assembling the synthetic rod, pyrophyllite, a conductive steel ring, a conductive tube, a conductive plate, a thermal insulation tube, a thermal insulation plate and the like to form a diamond synthetic block, and then placing the diamond synthetic block into a six-surface diamond presser for synthesis, with the actual synthesis pressure being 9.5-11GPa, and the actual synthesis temperature being 1,450-1,550 DEG C, wherein the actual synthesis temperature and the synthesis pressure are ensured respectively by controlling a power curve and a pressure curve. The synthesis process is used for a synthesis technology of the self-sharpening resin diamond.

Description

technical field [0001] The invention relates to the technical field of diamond synthesis, in particular to a self-sharpening resin diamond synthesis technology. Background technique [0002] At present, low-strength diamond abrasives, mainly single crystal diamond particles, are used in the manufacture of resin bonded abrasives and vitrified bonded abrasives at home and abroad, and the use effect is not ideal. There are mainly the following problems: (1) the surface is smooth, not rough enough, and the mechanical combination (engagement) with the binder is not strong. (2) During the grinding process, the entire abrasive grain often falls off prematurely. According to statistics, 2 / 3 of the diamond abrasive grains in the resin bonded diamond grinding wheel fall off prematurely before the grinding effect is fully exerted, which greatly shortens the service life. (3) During the grinding process, the damage mode of the abrasive grains is to split along the direction of the cle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J3/06
Inventor 邓云鹏聂建军靳征昌鄢鸿桢
Owner 河南金六方超硬材料有限公司