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Vacuum heat treatment and traditional heat treatment
Vacuum heat treatment is a combination of vacuum technology and heat treatment, which means that all and part of the heat treatment process are carried out under vacuum. Vacuum heat treatment can almost achieve all heat treatment processes, such as quenching, annealing, tempering, carburizing, ch...
Preparation technology and solution of boron carbide bulletproof ceramics under hot pressure
Boron carbide is a new type of non-oxidized ceramic material, which is widely used in energy, military, nuclear and bulletproof fields due to its high melting point, high hardness, low density, good thermal stability, strong resistance to chemical erosion and strong neutron absorption. Boron carb...
Ceramic/metal connections and applications
Although the special ceramic materials have excellent insulation (most ceramics), high temperature resistance, corrosion resistance and wear resistance, but their brittleness and machining performance are very poor, it is difficult to prepare large or complex structural parts. Metal materials hav...
Heat treatment technology to improve the quality of die and machinery
1. Mold manufacturing accuracy Uneven and incomplete structural transformation and excessive residual stress caused by heat treatment cause deformation in the processing, assembly and use of the mold after heat treatment, thus reducing the precision of the mold or even scrap. 2. The strength of t...
High temperature annealing treatment of silicon carbide crystal
The most common and mature method for SiC crystal growth is still physical gas phase transport (PVT), which is a gas-phase growth method with high growth temperature and high requirements on raw materials and process parameters. In recent years, a great deal of time and energy have been invested ...
Vacuum brazing scheme of stone carving cutter
Stone carving knife is a special tool used in CNC stone carving machine. The special nature of stone determines that the stone carving knife must have the characteristics of high structural strength and high wear resistance. About the diameter of the tool handle: the selection principle of the di...
Analysis of Defects in Metal Powder Injection Molding
Analysis of Defects in Metal Powder Injection Molding (MIM) Metal powder injection molding (MIM) is a molding process in which a plasticized mixture obtained by mixing a binder and metal powder is injected into a specific mold. It is a combination of powder metallurgy and polymer injection moldin...
The effect of heat treatment on the surface quality of stainless steel
The surface of stainless steel is not uniform. When heat treatment is heated, it must be uniformly formed oxide scale. To achieve consistency, the quality of stainless steel surface is mainly determined by the pickling process after heat treatment, and full attention should be paid to the heating...
Vacuum diffusion welding and vacuum brazing
Diffusion welding is a welding method in which the weldments are closely bonded and kept at a certain temperature and pressure for a period of time, so that the atoms between the contact surfaces are diffused to form a connection. Because welding is usually completed in high temperature environme...
Vacuum brazing samples of ceramic, copper and Kovar Alloy
Due to the existence of coating or coating, ceramic components are limited in the use of high temperature, so it is difficult to play the advantages of high temperature stability of ceramics. People are required to look for direct brazing methods. Direct brazing of ceramics can solve the connect...