I. selection of sintering technology

With the increase of temperature, diamond saw blade matrix densification degree of progress, the bending strength also will progress, and follow the extension of heat preservation time, blank tire body and diamond agglomerate the lower after the bending strength of advanced step, can choose sintered under 800 ℃ 120 s technology to satisfaction function request.

Ii. Selection of diamond particle size

When the diamond particle size is coarse and single, the diamond saw blade has sharp blade tip and high cutting power, but the bending strength of diamond agglomeration decreases. When the diamond particle size is fine or coarse, the blade tip has high durability but low power.

By summarizing and considering the above factors, it is appropriate to select a diamond particle size of 50/60 mesh.
Iii. Selection of diamond strength

The strength of diamond is the main index to ensure the cutting function. Too high strength will make the crystal is not easy to break, abrasive particles in the use of polishing, sharpness reduced, leading to deterioration of things function; When the strength of diamond is not good, it is easy to be broken and difficult to bear the heavy burden of cutting. Therefore, the selection intensity should be 130 ~ 140N.

Iv. Selection of diamond dispersion concentration

Within a certain range, when the diamond concentration changes from low to high, the sharpness and cutting power of the saw blade will gradually decrease, while the service life will gradually extend. But if the concentration is too high, the blade will become dull.

And choose low concentration, coarse grain size, power will progress. The use of different parts of the blade in the sawing effect, choose a different concentration (that is, in the three or more layers of construction of the center layer can choose a lower concentration), the sawing process of the knife head to form a central groove, is conducive to avoid the blade deflection, and then improve the quality of stone processing.

V. selection of adhesive phase:

The function of the saw blade depends not only on the diamond, but also on the whole function of the composite material which is composed of the diamond and the binder.

As for soft stone materials such as marble, the mechanical function of the tool head is relatively low, and copper based binder can be selected. However, copper based binder has low sintering temperature, low strength and hardness, high endurance, and low bonding strength with diamond.

When participating in tungsten carbide (WC), WC or W2C shall be used as the skeleton metal, with an appropriate amount of cobalt to improve the strength, hardness and bonding characteristics, and a small amount of Cu, Sn, Zn and other metals with low melting point and hardness shall be used as the bonding phase. The particle size of the main additive should be finer than 200 mesh and that of the additive should be finer than 300 mesh.