Single crystal diamond tools are superhard tools made of single crystal diamond with extremely high hardness and wear resistance, and belong to diamond tools like polycrystalline diamond tools.
Among them, single crystal diamond tools can be divided into natural single crystal diamond tools (abbreviation: ND) and artificial single crystal diamond tools (abbreviation: MCD) according to their material sources, and artificial single crystal diamond tools can be divided into high temperature and high pressure method There are two types of single crystal diamond tools and chemical vapor deposition method single crystal diamond tools.
Polycrystalline diamond tools are divided into two categories: polycrystalline diamond tools (abbreviation: PCD) and chemical vapor deposition diamond tools (abbreviation: CVD), and chemical vapor deposition diamond tools can be divided into CVD diamond film coating tools and There are two types of CVD diamond thick film coating tools.
As for CBN, it is the abbreviation of cubic boron nitride. As a superhard material whose hardness is second only to diamond, cubic boron nitride tools and diamond tools basically cover all types of superhard tools currently on the market.
Due to their high hardness and wear resistance, both CBN tools and diamond tools can process high-hardness materials and difficult-to-cut composite materials, and can perform high-speed cutting to obtain high processing accuracy and improve processing efficiency. The only difference The difference is that the processing materials applicable to both are different.
CBN tools are mainly suitable for gray cast iron, wear-resistant cast iron, and various high-hardness materials (such as cold and hot tool steel, high-speed steel, bearing steel, powder metallurgy steel, Powder smelting metal, high-strength steel, high manganese steel, white cast iron, austenitic iron, etc.) and other black metal cutting.
Diamond tools are suitable for processing non-ferrous metals and non-metallic materials other than ferrous ferrous metals. Among them, single crystal diamond tools are specially used for ultra-precision machining, and their extremely thin cutting ability can ensure extremely high dimensional accuracy.
PCD tools are best suited for machining aluminum and other tough non-ferrous alloys (such as copper, brass, and bronze), as well as highly abrasive composite materials (such as graphite, ceramics, carbon-carbon materials, aluminum-based silicon carbide, acrylic, carbonized phenolic, fiberglass and porous sealant).
CVD diamonds are mainly coated tools, which are mostly used in the graphite field. For small diameters, more coatings are used. If the diameter is large, PCD tools can be used instead. PCD tools are more wear-resistant than CVD coated tools.