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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...
Vacuum Brazing Technology of Stainless Steel Surgical Instruments
A surgical instrument for holding suture needles and knotting, the working end of which is inlaid with cemented carbide by inlaying technology, so as to obtain better wear resistance and anti-skid performance and facilitate maintenance and replacement. In recent years, the vacuum brazing heat tre...
Analysis of Defects in Vacuum Brazing of Aviation Aluminum Alloy Chassis
Due to its special working environment, aviation airborne power supply chassis requires some special requirements such as heat dissipation, weight reduction, anti-electromagnetic interference, anti-vibration, and corrosion resistance. The rust-proof aluminum alloy 3A21 has mature and good brazing...
Application of Vacuum High Pressure Gas Quenching Furnace in Heat Treatment of Casting Die
With the continuous enhancement of people’s awareness of environmental protection, behaviors that endanger the environment are gradually restricted or prohibited. Because vacuum heat treatment is pollution-free, it has developed very rapidly in my country in recent years. At present, the 6b...
Gas Nitriding Technology of 34CrNi3MoA Steel
34CrNi3MoA steel is a high-strength alloy steel widely used in the steam turbine industry. After quenching and tempering, it has good comprehensive mechanical properties. Especially after nitriding, it is often used to manufacture important parts with high strength and good plasticity, such as ge...