Preparation of large-area diamond film; cutting the diamond film into the shape and size required by the tool. Welding of diamond thick film and tool base material; grinding and polishing of cutting edge of diamond thick film tool.
The production process of diamond saw blades requires attention to film-coated tools, which are made of diamond films deposited by chemical vapor deposition on collective materials with good rigidity and high-temperature properties.
The main problem is that the adhesion between the diamond film and the substrate is poor, and the diamond film tool does not have regrindability.
Since the coating formed on the surface of the tool is pure diamond, it takes a long time to regrind the tool with a diamond grinding wheel. In addition, the tool preparation process used to grow the diamond changes the chemical properties of the tool surface.
Extended information
1. The wear amount of diamond turning tools is minimal when cutting oxygen-free copper, and the integrity of the tool edge is maintained well. The wear form is mainly the crescent on the rake surface. Pit wear. When the cutting environment is low in oxygen or oxygen-free cutting fluid is used, the wear of the tool when cutting copper can be reduced.
2. When cutting aluminum alloy with a diamond turning tool, due to the affinity between aluminum and diamond, carbides can be formed at any temperature. Therefore, when cutting aluminum, the surface of the tool should be coated with lubricant or Isolation film
3. Diamond turning tools have the advantages of extremely high hardness and wear resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and low affinity with non-ferrous metals.
Baidu Encyclopedia-Diamond Tools