1. Vacuum heat treatment: vacuum heat treatment is a product of the combination of vacuum technology and heat treatment process. Because it has the non oxidation, does not take off the carbon, the surface brightness.
The advantages of small deformation, no pollution and energy saving, and so on are very rapid development. Vacuum heat treatment is not only used to deal with the active refractory metal, but also has a wide range of applications in high speed steel, tool steel, steel, Zhou Chenggang, heat resistant steel, quenching, tempering, solid fusion treatment and annealing. Such as tool steel by vacuum quenching, the deformation amount of salt bath quenching tool 1 / 3 to 1 / 5, with vacuum quenching of the tool to the workpiece, the surface roughness is better than salt bath quenching tool 1 ~ 2 level life of tools and can be increased by 3 ~ 4 times
2. Vacuum brazing: vacuum brazing is mainly used for aluminum and its alloy, high temperature alloy, refractory metal, hard alloy, ceramic and other poor bonding material of the connection. For example, gas separation equipment, petrochemical equipment in the heat exchanger, all made of aluminum alloy material, with a small size, light weight, high efficiency, compact structure, durable and so on. Per cubic meter volume of gold type for heat area up to more than 1000 m 2, and around the tube and shell and tube heat exchanger compared, its volume and weight are accounted for only about 1 / 4, not with a vacuum without soldering agent aluminum brazing compared with the past salt furnace brazing furnace, products of good quality, low cost, short production cycle, no corrosion, welding without cleaning and electricity saving 75% ~ 80%. Due to the maturity and development of vacuum aluminum brazing process, the heat exchangers used by foreign cars and aircraft have been used in foreign countries.
3. Vacuum coating tool: in the past ten years, the use of physical vapor deposition (PVD), the high speed steel tool on the Tin is very popular, the North called "tool revolution"". Ion plating tool in many ways, the development of faster is arc ion of, he is the arc discharge method in the solid cathode targets of direct evaporation of metals. Is evaporated titanium target connected with the cathode, vacuum chamber as the anode, when the trigger the motor and the cathode target from the sudden and causing an arc strongly emitting cathode spots on the surface of the cathode, so the material in this spot instantaneous evaporation and ionization. Arc ion plating is the main advantage of high deposition rate, no soluble pool, the cathode target can be arranged in any direction according to the shape of the workpiece, so that the fixture is greatly simplified. Based on a lot of production tests show that coating tool life is plating tool of 3 to 8 times, the subject of high cutting speed 25 ~ 30%, especially for difficult to machine materials of HB280 ~ 320, tin coating more show out his superior performance
