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Vacuum gas quenching process
Vacuum gasquenching medium The cooling rate of vacuum air quenching is related to the type of gas, gas pressure, flow rate, furnace structure and furnace loading condition. Available gases are Ar, He, H, and N,. Assuming that the heat transfer rate of air under the same conditions is 1, then Ar i...
Gear drive shaft vacuum heat treatment
The gear drive shaft is an important transmission part in the rolling mill, which mainly bears the alternating load, the impact load, the shear stress and the contact stress. The shaft is prone to cracks and the teeth are prone to wear. Therefore, the core of the gear shaft is required to have a ...
CTS antenna vacuum brazing
With the continuous improvement of modern electronic equipment’s requirements for high reliability, high performance, light weight and miniaturization, the importance of advanced welding technology has become increasingly prominent. CTS (Continous Transverse Stub) antenna assembly is a thin...
Vacuum carburizing and quenching process of 15CINi4MoA steel cross shaft
The cross shaft is an important part of the cross-shaped universal joint shaft. The material is often made of 15CINi4MoA steel. The final vacuum heat treatment process is vacuum carburizing and quenching. Because the Ni content (mass fraction) of the material is as high as 4%~4.5%, Ni and Fe can ...
Vacuum Carburizing Process of 20CrMnTi Steel
20CrMnTi steel is a carburizing plastic mold steel with good performance in carburizing and vacuum heat treatment. It has a fine-grained structure below 960 °C. When heated for a long time at a commonly used carburizing temperature, the grains have no tendency to grow. There is very little retain...
H13 steel mold vacuum heat treatment
In recent years, the development of my country’s mold industry is very rapid, especially the continuous development and wide application of CAD/CAM technology, so that the production capacity of molds has increased rapidly, and the annual rate of increase is about 15%. In industries such as...
Vacuum heat treatment process of tool steel
S7 steel can be used to make cold work and vacuum hot work molds. The hardness of the steel after forging is about HRC52. It must be softened and vacuum annealed to reduce the hardness. It is convenient for cutting, and then vacuum quenched and vacuum tempered to meet the performance requirements...
Vacuum Brazing of Mechanical Blades
Generally speaking, the main function of a mechanical blade is a tool for cutting wood, leather, printing, and glueboard and other materials. There are many types and specifications of blades. However, due to the particularity of mechanical inserts in cutting, the requirements for inserts are rel...
Silicon carbide mirror reaction sintering
Silicon carbide ceramics, as one of the candidate materials for large-sized light-weight mirrors for space, has excellent comprehensive advantages compared with traditional glass and metal materials, such as high specific stiffness, small thermal expansion coefficient, good thermal conductivity, ...
The importance of brazing holding time
The brazing holding time is an important stage for the filler metal to fill the gap and control the alloying effect, and the effect on the joint strength is similar to that of the brazing temperature. A certain holding time is necessary for the mutual diffusion of the solder and the base metal to...