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Improvement of Bolt Vacuum Hardening Crack
When the hardness of M24 bolts was tested after vacuum hardening and vacuum tempering, a large number of cracks were found. The material of the cracked bolt is 42CrMo steel, which has good hardenability, and its ideal critical diameter reaches 135 mm, which can be used to manufacture parts with h...
Mine pressure plate vacuum hardening
The pressure plate is the key part of the scraper conveyor. During use, it forms a scraper chain with the scraper, bolts, and chains. Driven by the power unit, the coal is transported to the ground. The pressure plate has been operated in the harsh environment of the underground for a long time. ...
Comparison of Metal-Ceramic Brazing Methods
Advanced ceramic materials have excellent characteristics such as high hardness, high strength, high temperature resistance, good wear resistance, corrosion resistance, and oxidation resistance, and broad application prospects, especially in the fields of electronic energy, transportation, engine...
Hardenability and Vacuum Heat Treatment of Carburized Steel
Gear heat treatment distortion is the change in size and shape of the gear during the vacuum heat treatment process due to the different organizational structure of each part of the gear or the different transformation sequence of the organizational structure and the different thermal stress of e...
Low alloy wear-resistant steel and its vacuum heat treatment process
Wear is one of the main forms of workpiece failure, and it generally exists in various application fields of steel materials. While catastrophic failures due to wear are rare, industrial economic losses due to wear causing workpieces to fail are quite staggering. The proportion of energy consumpt...
Why Heat Treat in a Vacuum
Vacuum heat treatment method The vacuum heating method is selected according to the requirements of heating equipment, workpiece and vacuum heat treatment characteristics. There are four methods: cold furnace charging, warm charging, high temperature charging and low temperature charging. The hea...
High Performance MIM Vacuum Sintering Furnace
In order to meet the needs of the industry for the continuous development of technical requirements and related specifications, we must explore the growth space of MIM process equipment in terms of accuracy and efficiency. Currently, limitations such as the mechanical and chemical properties and...
Leakage Causes of Vacuum Brazed Stainless Steel Plate Heat Exchanger
Water seepage and corrosion occurred in a heat exchanger after long-term use, and the leaking parts were inspected macroscopically, scanned electron microscope and energy spectrum analysis. The results show that: the copper solder in some areas is not completely fused with the stainless steel sub...
Steel gear vacuum carburizing and quenching
1 Steel gear technical requirements For gears, compared with other heat treatment methods, vacuum carburizing and quenching has the best comprehensive mechanical properties, so the carburizing process is most widely used in the production of high-parameter gears. 20Cr2Ni4A steel is a high-strengt...
Sheet metal vacuum carburizing process
Plates are stamped and formed parts, and are now widely used in industries such as industrial sewing machines and automobiles. Considering its stamping and processing performance, many parts are made of low carbon steel, which is treated by vacuum carburizing and quenching to improve the strength...