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CVD/PCD Diamond Tool Brazing
Single crystal cutting tools is mainly in the field of ultra-precision machining cutting tool, the cutting tool is general quality is greater than 0.1 g, the path is not less than 2 mm long, which can realize the mirror machining, can work out high precision and low surface roughness of workpiece...
Vacuum Brazing of Silicon Nitride Ceramics and 45 Steel
In this paper, the Al-Si alloy foil is used as the intermediate reaction layer of vacuum brazing, and the vacuum brazing of silicon nitride ceramics and 45 steel is experimentally studied under the conditions of certain brazing temperature and holding time. Selection of brazing filler metal: In ...
Design of Heating Chamber of High Temperature Vacuum Brazing Furnace
Brazing is a welding technology that uses a solder with a lower melting temperature than the base metal, adopts an operating temperature lower than the solidus of the busbar and higher than the liquidus of the solder, and connects the base metals together through the molten solder. The vacuum bra...
Pollution causes of precision alloy vacuum furnace
Vacuum furnaces are mostly used for ferrous metal heat treatment. Due to the easy access to the required surface quality, the pollution of vacuum furnaces has not attracted much attention. Vacuum furnace manufacturers have not made great efforts to solve this problem, especially for heat treatmen...
Influence of Reaction Sintering Process on Properties of Silicon Carbide Ceramics
In this paper, the effects of degumming temperature, silicon addition amount (that is, the mass ratio of silicon to silicon carbide green body), heating rate and refiring times on the bulk density, bending strength, fracture toughness and microstructure of reaction sintered silicon carbide produc...
Application of Pressureless Sintering of Silicon Carbide Ceramics
With the development of science and technology, especially the high development of energy and space technology, it is often required that materials must have superior properties such as high temperature resistance, corrosion resistance, and wear resistance before they can be used in relatively ha...
Vacuum Brazing of Cemented Carbide and Martensitic Stainless Steel
WC cemented carbide is widely used because of its high hardness, wear resistance, good red hardness, low coefficient of thermal expansion and good chemical stability. However, the plasticity and toughness of cemented carbide are poor and expensive. Generally, the size of cemented carbide parts is...
Application of low pressure vacuum carburizing
In the heat treatment production process, the traditional carburizing process has the problems of long cycle, high energy consumption, and the quality needs to be further improved. To this end, heat treatment workers are very concerned, and have been working hard to study better carburizing techn...
Analysis of carbon content on the surface of carburized parts
The carbon content and its distribution gradient on the surface of carburized parts have an important influence on the properties of the carburized layer. Too high or too low surface carbon content or surface decarburization will have adverse effects on the surface strengthening effect of carburi...
Vacuum heat treatment of corrugated spring bayonet connector
Corrugated spring is the key part for locking bayonet electrical connector. 65Mn thin wall corrugated spring is widely used in various bayonet electrical connectors because of its good elasticity and simple forming process. Hydrogen embrittlement always exists in the electroplating of this part, ...