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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...
Vacuum Heat Treatment of Fasteners
We all know that the vacuum heat treatment of fasteners can make them have a certain strength, good plasticity, toughness, etc., and then they can be used better, while reducing the phenomenon of relaxation and ensuring the quality and reliability of fasteners. Vacuum heat treatment is the most c...
Vacuum sintering of transparent ceramics
In the preparation process of transparent ceramics, in addition to the key link of preparing nano-powders with high purity, uniform particle size and good activity, the molding and vacuum sintering processes are also crucial. The most commonly used molding methods for transparent ceramics are dry...
Silicon Carbide Reaction Sintering Process
SiC mainly has two crystal forms, namely high-temperature stable hexagonal α-SiC and low-temperature stable cubic β-SiC. The density of α-SiC is 3.217g/cm^3, and the density of β-SiC is 3.215g/cm^3. β-SiC has good stability at 2100 ℃, and it begins to transform into α-SiC above 2100 ℃, especially...
Aluminum alloy and stainless steel vacuum brazing
With the acceleration of the energy saving and environmental protection process and the lightweight trend of various mechanical parts in the automotive and industrial fields, the development and research of aluminum alloy and stainless steel vacuum brazing technology is becoming more and more imp...
Vacuum sintered powder metallurgy parts
Powder metallurgy is an important part forming technology. The continuous emergence of new technologies and processes of powder metallurgy will surely promote the rapid development of high-tech industries, and will also bring bright prospects for material engineering and manufacturing technology....