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Process for coating diamond particles by cobalt powder

A diamond particle and coating technology, applied in diamond and other directions, can solve the problems of uneven distribution of diamond particles, affecting product quality, different specific gravity, etc., and achieve the effects of improved coating effect, low cost and simple process.

Active Publication Date: 2012-10-17
HEBEI HANGHUA DIAMOND PROD
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Problems solved by technology

Moreover, due to the different particle sizes and specific gravity of diamond particles in different diamond products, it is easy to have uneven distribution of diamond particles in the product, which will affect the quality of the product.

Method used

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  • Process for coating diamond particles by cobalt powder

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Embodiment Construction

[0017] The process of coating diamond particles with cobalt powder includes the process of coating metal powder on the surface of diamond particles. The key is: the process steps of coating metal powder include:

[0018] a. Prepare the diluent, prepare isopropanol and acetone according to the molar ratio of (3.5-4.5): 1, and mix the prepared diluent and glue according to the weight ratio of (7-9): 1 to form an adhesive;

[0019] b. Put the diamond particles into the coating device;

[0020] c. While spraying the above-mentioned prepared adhesive into the coating device, sprinkle the metal powder into the coating device at the same time, roll and disperse the diamond particles evenly, and complete the coating process.

[0021] The cladding device includes a support 1, a drive motor 2 fixed on the support 1, and a container 3 containing diamonds. The container 3 is connected with the output spindle of the drive motor 2 to form a rotating structure.

[0022] The support 1 is...

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Abstract

The invention relates to a process for coating diamond particles by cobalt powder. The key points are as follows: the process comprises the steps of: blending a diluted agent, blending isopropanol and acetone according to a mole ratio of (3.5-4.5):1, and mixing the blended diluted agent with glue according to a weight ratio of (7-9):1 to form a binding agent; placing the diamond particles into a coating device; and spraying the blended binding agent into the coating device, sprinkling metal powder into the coating device, roll-dispersing the diamond particles evenly, thus completing the coating process. The process has the advantages that the process procedures are simple, and the cost can be lowered by more than 50% by adopting a technology of coating diamond particles by cobalt powder to substitute the mode that the cobalt powder is directly used as binding materials of a wear-resistant material in the prior art; and the new type blended diluted agent has low cost, the coating effect is obviously promoted by proportion of the diluted agent and the glue, thus finally leading the produced diamond products to be perfect.

Description

technical field [0001] The invention belongs to the technical field of diamond products, and relates to a diamond particle used in a diamond product, in particular to a process for coating diamond particles with cobalt powder. Background technique [0002] In the current diamond briquettes, cobalt is generally used as the bonding material for diamond wear-resistant materials. However, due to the lack of cobalt reserves in my country, it mainly relies on imports, making cobalt raw materials very expensive, reaching 900 yuan per kilogram at the most expensive time. , and the volume content of diamond particles in the diamond compact is actually small, about 8%, that is, about 92% of the volume is metal. The place that really holds the diamond particles from falling off is the metal around the diamond particles, while other The metal material of the place does not matter, as long as the wear resistance is close to that of cobalt powder. Therefore, it is too wasteful to u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02C01B31/06C01B32/28
Inventor 王玉山
Owner HEBEI HANGHUA DIAMOND PROD
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