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Vacuum Sintering of Quartz Ceramics
Quartz ceramics, also known as fused quartz ceramics, quartz glass ceramics, sintered quartz glass products, sintered fused silica products, are products prepared by using fused quartz or quartz glass as raw materials through a series of ceramic processes such as crushing, forming, and firing. I...
17Cr2Ni2Mo Steel Gear Vacuum Carburizing
When the gear is working, it must not only bear a large impact load, but also bear alternating bending stress and contact stress. Therefore, the gear should have high strength, impact toughness and good fatigue resistance. When the gear pair meshes, the pressure and friction coefficient at the co...
Classification and selection of vacuum carburizing process
1.Direct quenching and low temperature tempering Structure and performance characteristics: Can not refine the grain of steel. The quenching deformation of the workpiece is large, the residual austenite on the surface of the alloy steel carburized part is more, and the surface hardness is lower. ...
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...