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Precision carburizing heat treatment of gears
The key to obtaining low-noise and long-life gears lies in the control of heat treatment quality. Precision heat treatment of gears includes the mass dispersion of technical indicators such as carburized layer microstructure, core and surface hardness, effective hardened layer depth, residual str...
Carbonitriding of 12CrNi3A Steel Parts
Carbonitriding is a chemical heat treatment method in which the carbon and nitrogen atoms decomposed by the active medium penetrate into the surface of the steel in the austenitic state to improve the surface hardness and wear resistance. Carbonitriding is essentially a chemical heat treatment pr...
Vacuum Brazing of Titanium Alloy and Aluminum Alloy Dissimilar Metals
Titanium alloys are widely used in aerospace, shipbuilding and petrochemical fields due to their low density, high specific strength, excellent corrosion resistance, high temperature strength and good low temperature toughness. However, titanium alloys have low elastic modulus, poor creep resista...
Vacuum Quenching Process of 45 Steel and T10 Steel
Vacuum heat treatment furnace has been widely used in oil and gas quenching of die steel, sintering of magnetic materials and hard alloys, vacuum brazing, annealing of soft magnetic materials, etc. The quenching of low hardenability carbon steel and the solution treatment of stainless steel can a...
Vacuum high pressure gas nitriding process
Gas nitriding process is widely used in the production of mechanical parts, it has many advantages, but its process time is long. For this reason, many methods have been adopted to increase the nitriding speed, and high-pressure nitriding is one of them. Compared with liquid nitriding and ion nit...
Comparison of Vacuum Sintering and Tunnel Furnace Sintering Technology
In terms of power chip assembly, the main problems at present are: after the assembled chip, due to the large void area at the bottom and the large thermal resistance, a large amount of heat generated during operation cannot be transmitted to the shell through an effective way, resulting in the j...
Vacuum Heat Treatment of Cr12MoV Steel Ceramic Die
Because of its good wear resistance and long service life, Cr12MoV steel has been widely used to make ceramic moulds in Guangdong, Fujian and other regions in China. There is a large amount of retained austenite in the structure of Cr12MoV steel after quenching, which can theoretically ensure sma...
Vacuum Brazing Defects and Solutions
Vacuum brazing is to heat and heat the structural parts in a vacuum state, so that the brazing filler metal melts within a suitable temperature and time range, and fully infiltrate, dissolve, diffuse and weld with the solid metal under the action of capillary force, so as to achieve An advanced w...
Vacuum Brazing of Aluminum Alloy Flat Tubes with Porous Flat Channels
The air conditioning system mainly consists of four components, namely the compressor, the condenser, the throttling expansion mechanism and the evaporator. Among them, the condenser and the evaporator are collectively referred to as heat exchangers, which are heat exchange units in refrigeration...
Vacuum Heat Treatment of Metal Bellows
Metal corrugated pipe is an axisymmetric pipe shell part with elasticity, thin wall and transverse ripple. It requires both elastic properties and pressure resistance, sealing, corrosion resistance, temperature resistance and other properties. It can produce corresponding displacement under the a...