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On-line quenching and tempering of high strength steel plate
12MnNiVR high-strength steel plates are mainly used in large floating roof oil storage tanks of 100,000 to 200,000 cubic meters. High-efficiency large-line energy welding technology is used, and the welding line energy is 50-100 kJ/cm. Therefore, high-strength steel plates for oil storage tanks s...
Surface Gas Nitriding Treatment of 2Cr13 Steel
2Cr13 steel is a high-chromium martensitic stainless steel with high fatigue strength and good comprehensive properties. It is mainly used for parts with high plasticity requirements and impact loads, such as steam turbine blades, large axial compressor blades, and valve bodies. ﹑ Fasteners, sha...
What are the characteristics and advantages of the MIM process?
Metal powder injection molding technology is a powder metallurgy molding technology formed by the combination of modern plastic injection molding technology and powder metallurgy technology, and has been rapidly promoted. Its basic technological process is: firstly, the micro metal elements or al...
Vacuum Brazing of EGR Stainless Steel Cooler
EGR car coolers are exhaust gas recirculation coolers that reduce vehicle exhaust emissions. The exhaust gas that has been burned can effectively reduce the oxygen content and temperature after passing through the EGR cooler, and mix and burn with fresh gas in the cylinder, reducing the amount of...
Aluminum alloy vacuum brazing of heat exchangers
Aluminum alloys have been widely used in the field of heat exchangers due to their high specific strength, excellent heat transfer performance, abundant reserves and low cost. The all-aluminization of heat exchangers has become an inevitable trend of development, and its manufacture must be compl...
What are the applications of vacuum brazing of aluminum alloy?
There are four main brazing methods for aluminum alloy: dry air chloride flux brazing, salt bath brazing, nitrogen protection non corrosive flux brazing and vacuum non flux brazing. The main disadvantage of the dry air method and the salt bath brazing method is that the flux residue must be remov...
Influence of Vacuum Tempering Treatment on Carburized Gears
Remanufacturing technology provides a new way to rationally deal with scrapped automobiles. The so-called remanufacturing is to remanufacture new products with qualified performance after cleaning, testing, repairing and assembling scrapped mechanical and electrical products. Common failures of g...
Prevention method for grinding cracks of vacuum carburizing and quenching gears
There has been a long-term serious problem in the gear grinding process – cracks. Grinding cracks refer to the occurrence of the grinding surface, the depth is shallow, and the depth is basically the same, and the direction is perpendicular to the tooth direction, that is, perpendicular to...
Pit Type Furnace Nitriding Process And Operating Procedures
Principles for determining preparatory processing: 1.Generally, structural steel parts are quenched and tempered. The high temperature tempering temperature should be 20~40℃ higher than the nitriding temperature, and the holding time should not be too long. 2.For parts with low impact toughness r...
Vacuum brazing technology of laminated aluminum evaporator
The evaporator is an important part of the automobile air conditioner, which forms the air conditioning component with the heater core, fan, plastic shell, etc., and is located at the lower part of the automobile dashboard. The automobile refrigeration system is composed of a condenser, a circula...