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Vacuum pressureless sintering of boron carbide ceramics with additives
Boron carbide ceramic materials have many excellent properties, such as: high melting point (2450°C), ultra-high hardness (HV>30GPa), low density (2.51g/cm³), high modulus, good wear resistance, oxidation resistance, Strong acid and alkali resistance, good neutron absorption capacity, and high...
Aircraft engine rectifier vacuum brazing
The material of the 5~8 stage rectifier of the aero-engine is Ti-6AI-4V titanium alloy. It is required to braze 60~80 blades to the inner and outer rings at the same time. The smaller the amount of deformation required as a whole, the better. When assembling before vacuum brazing, the blades are...
Precision gear vacuum heat treatment process
With the rapid development of science and technology, the development of CNC machine tools and high-precision machine tools has accelerated. The working load of the machine tool is heavy, the movement speed is fast, and the precision of the parts is required to be higher. Therefore, higher requir...
Vacuum brazing process of honeycomb materials
Vacuum brazing is an advanced welding process, which is widely used in machinery, aviation, shipbuilding and other industries. During welding, the brazing material diffuses between the base metals and is distributed to the tight mating surface of the joint by the adsorption of capillary tubes. Wo...
High Temperature Vacuum Brazing of Niobium Alloy and Stainless Steel
In the nuclear industry, many welding problems between dissimilar metals and refractory metals are often encountered, and the connection between niobium alloys and stainless steel is one of them. Due to the large difference in chemical composition, melting point, linear expansion coefficient and ...
Large complex mold vacuum heat treatment process
In the design of large and complex molds, those who can design the mold as a whole will design the mold as a whole, and with the development of automobile molds, the shape of automobile molds will also become larger and thicker. The influence of the thickness and size of mold parts on heat treatm...
Principle of vacuum heat treatment process
The so-called vacuum heat treatment is a heat treatment method in which the workpiece is heated to the required temperature in a 10-1~10-2Pa vacuum medium, and then cooled in different media at different cooling rates. Vacuum heat treatment is called high-efficiency, energy-saving and pollution-f...
Stainless steel vacuum brazing process
The cleaning requirements before vacuum brazing of stainless steel are more stringent than that of carbon steel. This is because the oxides on the surface of stainless steel are more difficult to remove with flux or reducing atmosphere during brazing. Cleaning before vacuum brazing of stainless ...
Vacuum Brazing Repair of Ni-based Turbine Blades
Modern gas turbines use directionally solidified (DX) and single crystal (SX) nickel-based alloy turbine blades. In actual operation, these blades have to meet extremely high working requirements. After a certain period of operation, obvious damage mechanisms will be displayed on the blade. Since...
NdFeB magnet vacuum sintering process
The vacuum sintering process of NdFeB magnets is a process of changing the powder separation body from a green body to a blank. It is responsible for sintering the stripped product. The relative density of the vacuum sintered NdFeB powder compact is relatively high, and the interparticle The con...