Commonly used bond for diamond segment
In the manufacture of diamond tools, cobalt has a good wettability to diamond, especially when the diamond segment requires heavy load and high efficiency cutting, it has an irreplaceable position. But its high price is forcing people to gradually replace it with iron, nickel. Most of the cobalt bond materials are very costly, and a proportion of more than 10% will reduce the cost-effectiveness of the product. The cobalt bond are common for the tools made by Korea or Italy, while such materials are relatively rare in the segment made by China.
The elastic modulus of iron is medium, and it has good wettability to diamond. In addition, the low price is the development direction of the bond. Most of the current diamond segment use iron bond, not only because of the closeness of iron and diamond C element, but also because iron bond is irreplaceable in reducing costs.
W or we bond
It is not widely used in China, but it is widely used in the professional cutting of asphalt roads and fresh concrete road in developed countries in Europe and America.