The powder used in diamond tools has strict requirements. It not only has requirements for chemical composition, but also has strict requirements for the size, shape, loose density, sintering, pressing and other aspects of powder particles. Different requirements mainly depend on the use, variety and other factors of diamond tools.
(1) Copper powder: Copper Powder is obtained by electrolysis, and from a morphological perspective, it appears like a branch and is rose red. At the same time, the advantages of the binding material are: the forming properties of electrolytic copper powder are good, and can be used to sinify after cold pressure forming; Pure copper materials have good compatibility with carbide and skeleton materials.
(2) Iron powder: There are generally three kinds of iron powder: reduced iron powder, electrolytic iron powder and carbonyl iron powder. The advantages of iron powder as a binding material include: low price, certain wetness, and good compatibility.
3. Cobalt powder: Cobalt Powder is a bonding agent that appears in an irregular sponge shape. Its advantages are: good morphability and storability; Improve the bending strength of the fetus; Diamonds have a greater adhesion force, and they are better moist and have good self-sharpness.
If the shortcomings of cobalt powder that is expensive, apparent bulk density is relatively small, there will be difficult to feed the situation.
Nickel powder: The appearance is irregular, branch-like, and its advantage is that it is good tough, which is suitable for making tools that work under heavy loads.