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Technical Guides
The Bond in Diamond Tools
May 05 , 2021

Diamond tool are tools made of synthetic diamond as the basic raw material, binder or other related materials as auxiliary material, according to a certain concentration and ratio. Diamond tools are often used in the processing of non-metallic materials such as glass, ceramics, stone and concrete. The bonding plays a very important role In diamond tools. Bonding agents can be divided into the following three categories: metal bond, ceramic bond and resin bond.


Metal Bond

The bonding agent that uses metal as the bonding material or alloy powder as the bonding material is called the metal bond. It is often used in the stone processing industry and concrete processing industry, and it is also widely used in construction and decoration industries. The bonding agent mainly contains metals such as Fe, cobalt, copper and Cu, and the tool formed by sintering with diamond is a metal bonding agent.

Ceramic bond

Ceramic bond diamond tools have the advantages of acid and alkali resistance, less deformation, high processing efficiency, and higher bonding strength. At the same time, the brittleness and poor toughness are also the shortcomings of ceramic bond. Ceramic bond not only appears in rough grinding diamond tools and semi-grinding diamond tools, but also appearing in shaped grinding diamond tools with larger contact areas.

Resin Bond

Using resin as the bonding raw material, metal powder, metal oxide and ordinary abrasives as auxiliary raw materials, the bonding agent synthesized by a certain production method is called a resin bond. The commonly used resin binders mainly include phenolic resin and epoxy resin.


In diamond tools, bonding is an indispensable and very important component. By analyzing their advantages and disadvantages, it can be seen that the resin bond characterized by good viscosity and good elasticity is often applied to semi-grinding tools and super-grinding tools of non-metallic materials. As far as the bonding strength of diamond abrasives is concerned, the ceramic bond performs better than the resin bond, so it often appears in rough grinding diamond tools and semi-grinding diamond tools, and it also appears in shaped grinding diamond tools with larger contact areas. Low hardness, good compatibility and low melting point are the characteristics of the metal bond, so people often add the metal bond to a variety of high-density, high-hardness, hard and brittle materials and other difficult to process materials.

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