How to effectively improve the quality of diamond tool
Author:rootTime:March 12, 2015

1 For the manufacture of diamond tools providing production stable performance, coarse particles, good thermal stability and high strength diamond.
The quality of diamond quality, particle size and concentration on the diamond tool has a decisive role. Our country on diamond synthesis, the top six small tonnage high technology already hasten is mature, the top six large tonnage and large cavity continuous improvement process, top two synthetic diamond has also begun to take shape, powder catalyst synthesis, carbon leaf wax stones, raw materials for the production of continuous improvement. Therefore, in view of our country manufacturing of diamond tools, batch synthesis of stable performance, coarse particles, good thermal stability performance of high strength diamond is completely possible. The foreign diamond company, in addition to the launch of SDA +, SDB, DSN, MBS, ISD series, DeBeers for the China market launch of BKI, BK30, BK60, BK70 diamond, South Korea and Japan into the company launched the top six synthetic SDS series diamond, are worthy of our reference. Tobacco
2 With strong carbide forming elements, improve the diamond retention
Improve the cutting efficiency and service life of diamond saw blade is a key factor to improve the holding force of matrix to diamond. The matrix of diamond has good control force, diamond will not prematurely detached, and has the largest protruding height, cutting sharp, high efficiency.
Improve the diamond retention generally has the following three kinds of methods:
( 1) to improve the mechanical holding force. This is because the metal powder during sintering shrinkage, form a compressive stress holding diamond. Compression stress is produced by the diamond and the matrix metal with different coefficients of thermal expansion due to sintering, or crystal formation and growth caused by volume change caused by. As the carcass yield strength is limited, so the resulting compression stress and mechanical holding force limited.
( 2) powder by adding a small amount of strong carbide forming elements such as Cr, W, Mo, due to its effect on Diamond wettability and good affinity, sintering in the diamond and the matrix metal is formed at the interface of carbide on diamond, gold combination, is conducive to the control force to strengthen and improve.
Diamond ( 3 ) surface is coated with a layer of strong carbide forming metal elements such as Cr, Ni, Ti, W etc.. This is in last few years more adopted technology measures. For this Yanshan University specializes in the development and production of three models of vacuum micro-evaporation Ti coating equipment.
According to the domestic and foreign experimental research and that the use of diamond coating technology, the effective use of conditions and scope:
The suitable for high grade diamond, the effect is more obvious;
The pure diamond matrix of control power is the order: Cr > Ti > not plating plating plated diamond.
The MBS-960Cr2 chrome diamond used in Co matrix, matrix and WC matrix with lower Fe bronze.
The MBS-960Ti2 Ti-coated diamond for drilling bronze matrix, iron based matrix.
In cutting the asphalt, concrete curing ( GreenConcrete ) and enhanced ( reinforced ) concrete used in plating of diamond saw blade.
The nickel plated diamond for resin bonded grinding wheel, its effect is as follows: the needle shaped nickel nickel plated diamond diamond > > without nickel plating of diamond.
The silver plated diamond is suitable for grinding cemented tungsten carbide tool precision of resin bonded grinding wheel. Because the silver price is not very expensive, suitable for high precision grinding, its thermal performance is good, suitable for oil cold grinding hard alloy. While silver is a very good lubricant, reducing the friction between wheel and workpiece, heat quantity.
3 Using ultra-fine powder and pre alloyed powder
In the production of diamond saw blade for cutting, appropriate uses of ultrafine metal powder with pre alloyed powder. Metal powder refinement is beneficial to reduce the sintering temperature, improve the hardness. Pre alloyed powder, can prevent the low melting point metal premature loss and segregation, in favor of the sintering products elastic limit and yield strength, to increase the durability of diamond, but also can reduce the sintering temperature and heat preservation time. China's Shanghai material, artificial crystal Institute of Beijing, Changsha Metallurgical Materials by powder metallurgy and south works which have made great efforts in this respect. South Korea in high-grade production of saw blade, the wide use of BASF, UM, INCO, Fum-tungstene, Kennametal companies such as ultra-fine powder and pre alloy powder.