In the process of processing marble and granite from waste materials into veneer boards, sawing and cutting is a crucial process. The sawing and processing cost accounts for more than 50% of the total stone processing cost. Therefore, reducing the manufacturing cost of saw cutting tool, diamond circular saw blade cutting tool, and improving its service performance and life, has become one of the important ways to reduce stone processing cost.

At present, the powder metallurgy compaction molding method is widely used to manufacture diamond circular saw blade cutter head (node) at home and abroad, but this technology has the following disadvantages:

(1) high requirements on diamond grade;

(2) strict requirements on the design and process of the tread formula, otherwise the diamond will be easy to fall off;

(3) the process will cause thermal damage to diamond, thus affecting the cutting performance of diamond circular saw blade.

The traditional method of making diamond circular saw blades by electroplating is the primary forming method, that is, the diamond tool head is electroplated directly on the substrate. This method has a long production cycle, complicated process and requires mould. The other method is the secondary forming method, that is, the tool head is first made by electroplating process, and then the tool head is embedded into the matrix by electroplating to make the saw blade. Compared with the primary method, the secondary method has a shorter production cycle, a simpler process, no mold required, a lower cost and easy quality control. But as a result of stone industry for cutting tools precision, smoothness, flatness, constantly improve the formability of requirements, using common electroplating process there are still limitations make diamond circular saw blade, due to the limitation of current density, compared with hot pressing molding in the production efficiency is low, small batch production.

In order to improve the machining efficiency of diamond circular saw blade, reduce processing costs, adopted the diamond surface metallization technology in recent years, granulating technology, optimization of cutting parameters, cutting tools and engineered stone material matching, and other means to improve the cutting performance of diamond circular saw blade, diamond segment in the problem of low utilization ratio of still didn't get very good solve.

In this paper, a new technology of making diamond composite base block by electroplating and bonding it into the cutting head of diamond circular saw blade by low melting point powder metallurgy is presented. The process will be plating method at low temperature and powder metallurgy hot-pressing method, can improve the production efficiency and performance of diamond circular saw blade, which can effectively reduce the manufacturing cost of a tool, so has good popularization and application value.

The diamond produced by industry contains impurities, which need to be removed before it can be used. Otherwise, the bonding force between diamond and the tire in the electroplated composite substrate will be reduced. After bath soaking, the wetting property of diamond and bath can be increased, and the bonding force between diamond and matrix material can be improved. The plating substrate shall be deoiled and fully washed before deposition to avoid insulation on the deposition surface and protect the plating solution from contamination.

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