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Some characteristics of vacuum heat treatment metal materials
High vacuum heat treatment has the following characteristics: ①The chemical activity of the high vacuum atmosphere is extremely low. During the vacuum heat treatment, the reactions occurring at the interface between the gas phase and the solid phase, such as oxidation, reduction, decarburization,...
Optimal Vacuum Heat Treatment for Bevel Gears
Bevel gears have the advantages of high coincidence, stable transmission, and large load-carrying capacity, and are widely used in various mechanical equipment. The strength and hardness requirements of bevel gears are relatively high, and vacuum carburizing and quenching are often used for stren...
Production process of Si3N4-AMB copper clad substrate
As the power density and operating temperature of the third-generation SiC-based power module devices continue to increase, the device also puts forward higher requirements for the heat dissipation capability and reliability of the packaging substrate. Traditional DBC ceramic substrates have bee...
Vacuum Carburizing for Large Gear Applications
We all know that gears are one of the most important parts of the transmission system of each of our cars. The role of the gear is to transmit power, and at the same time, it can change the speed and direction of the car. It is precisely because of the important role of gears in automobiles that ...
Die Steel Vacuum Nitriding
Vacuum nitriding technology uses the characteristics of clean and non-oxidized workpiece surface during vacuum heating, and uses vacuum heat treatment to carry out nitriding under negative pressure; after nitriding, the workpiece surface has high hardness and low brittleness, and the uniform nitr...
Aluminum Alloy Brazing in Vacuum Furnace
Aluminum alloy electronic chassis With the continuous development of science and technology, the requirements for the reliability and appearance quality of electronic equipment are increasing day by day. At present, aluminum alloy plate-fin structure electronic chassis with high heat transfer eff...
Vacuum Hardening Stainless Steel
Vacuum heat treatment of martensitic stainless steel Martensitic stainless steel has good vacuum heat treatment performance, and various mechanical properties such as strength and hardness can be obtained through vacuum heat treatment, and the adjustable range is extremely large. Vacuum heat tre...
Metallographic Inspection Knowledge of Bolt Quenching And Tempering
1. Quenched and tempered metallographic examination Quenching and tempering is to heat the hypoeutectoid steel above Ac3 by 30-50°C. When the vacuum quenching temperature of the workpiece is normal, the holding time is sufficient, and the cooling rate is also high, and the supercooled austenite d...
Ion Nitriding vs Gas Nitriding
Nitriding refers to a surface treatment technology in which nitrogen exists in the surface layer of the processed workpiece in the form of iron compounds and interstitial solid solutions at a temperature not higher than A1, so as to improve the hardness of the surface layer and improve the wear r...
Sintering of B4C by Pressureless Liquid Phase Sintering
Boron carbide ceramic materials have many excellent properties, such as: high melting point (2450C, ultra-high hardness (HV>30GPa), low density (2.51g/cm3), high modulus, good wear resistance, oxidation resistance, acid and alkali resistance Strong and good neutron absorption capacity, and ha...