Japanese standard channel steel is a long strip of steel with a groove-shaped cross-section. It is a carbon structural steel used in construction and machinery. It is a profiled steel material with a complex cross-section and has a groove-shaped cross-section. American standard channel steel is mainly used in building structure, curtain wall engineering, mechanical equipment and vehicle manufacturing, etc.
The materials of Japanese standard channel steel are: Q235B, A36, SS400, S490, S490A, S490B, etc.
Delivery state of Japanese standard channel steel: Unless otherwise specified, it is delivered in the state of hot rolling or forging; when used as die steel, it is usually delivered in the state of hot rolling, normalizing, normalizing and tempering.
1) Normalizing of Japanese standard channel steel: A heat treatment process in which steel or steel parts are heated to an appropriate temperature above the critical point AC3 or ACM, maintained for a certain period of time, and then cooled in the air to obtain a pearlite-like structure.
2) Annealing of Japanese standard channel steel: heat the hypoeutectoid steel workpiece to 20-40 degrees above AC3, keep it warm for a period of time, and then cool slowly with the furnace (or bury it in sand or lime) to below 500 degrees in the air Medium cooling heat treatment process.
Features of Japanese standard channel steel heat treatment process: Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing processes, the heat treatment of American standard channel steel generally does not change the shape and overall chemical composition of the workpiece, but changes the microstructure inside the workpiece, or changes The chemical composition of the workpiece surface endows or improves the performance of the workpiece. It is characterized by improving the intrinsic quality of the workpiece, which is generally not visible to the naked eye. In order to make metal workpieces have the required mechanical properties, physical properties and chemical properties, in addition to reasonable selection of materials and various forming processes, heat treatment processes are often essential. Steel is the most widely used material in the machinery industry. The microstructure of steel is complex and can be controlled by heat treatment. Therefore, the heat treatment of American standard channel steel is the main content of metal heat treatment. In addition, aluminum, copper, magnesium, titanium, etc. and their alloys can also change their mechanical, physical and chemical properties through heat treatment to obtain different performance properties.