Gradient alloying granulation method of diamond abrasive grain surface binding agent

Abstract

The invention discloses a gradient alloying granulation method of a diamond abrasive grain surface binding agent. The diamond abrasive grains with a gradient alloying binding agent layer comprise diamond grains; an inner binding agent, a middle binding agent and an outer binding agent are arranged on the surfaces of the diamond grains in sequence; and the content of carbide forming elements in the binding agent is gradually decreased layer by layer. A gradient alloying granulation device of the diamond abrasive grain surface binding agent is used for preparing the diamond abrasive grains and comprises a roller, a slurry feeding sprayer, a power feeding sprayer and an ultrasonic stirrer. The gradient alloying granulation method of the diamond abrasive grain surface binding agent uses at least three sets of above devices, and comprises the following steps: a, wrapping the inner binding agent on the surfaces of the diamond grains; b, wrapping the middle binding agent on the surfaces of the diamond grains; and c, wrapping the outer binding agent on the surfaces of the diamond grains. The prepared abrasive grains have relatively good performance and the preparation method is high in efficiency.

Description

technical field

[0001] The invention relates to a method for gradient alloying and granulation of diamond abrasive grain surface binders. Background technique

[0002] In the production process of diamond tools in recent years, the emergence of granulation technology has improved the fluidity of powder, reduced the segregation and enrichment of diamond and powder, ensured the precision and efficiency of the manufacturing process, and the granulation of different formulations and requirements Technology is being used more and more.

[0003] In the requirements of diamond products, we hope to improve the holding force of diamond abrasive grains and have better toughness space. In the prior art, the surface treatment technology of diamond abrasive grains, such as titanium plating, nickel plating, etc., is often used to improve the abrasive holding force, but the combination between the treated diamond and the metal matrix is ​​ignored, and the effect is not obvious. Due to th...

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