The heat treatment method of the mold steel is closely related to the processing arrangement. In the mold manufacturing, the heat treatment method should be selected according to the material and the processing route, and the corresponding heat treatment process should be formulated.
(1) Heat treatment process arrangement of general cold work die steel working parts: preparation - annealing - mechanical forming - quenching and tempering - work finishing.
(2) Cold-working die steel adopts forming grinding and electric machining processes: forging - annealing - mechanical roughing - quenching or tempering - finishing (grinding, electric machining).
(3) Processing of complex die for cold work die steel: forging - annealing - mechanical roughing - high temperature tempering or quenching and tempering - mechanical forming - quenching and tempering - grinding and electric forming.
Most cold work die steels are quenched and tempered. The hardness of the mold is usually 60hrc. In order to further improve the surface hardness, wear resistance and service life of the mold, surface strengthening treatments such as carburizing, nitriding and boronizing are often performed. Carbonitriding, td vanadium ruthenium, chemical vapor phase (cvd), etc. are used as final heat treatment.
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Label: How to arrange heat treatment process for cold work die steel parts
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