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The aluminum extrusion passes away usage hot steel as the base material. It requires to undergo the warmth treatment procedure to enhance the hardness and strength to satisfy the extrusion problems of high temperature as well as high pressure.
Usually, throughout warm therapy, in order to avoid surface oxidation, leading to decarbonization after warm treatment, the safety gas for anaerobic will be given (usually would be nitrogen), yet there could still be residual oxygen in the process of furnace, so the sector introduced vacuum cleaner therapy heater, in order to efficiently prevent the product surface area oxidation, decarbonization, carburization and also various other negative degradation.
In the process of heat treatment, 2 ~ 4 solidifying treatments will be adopted to launch the thermal stress and anxiety as well as gradually reduce the hardness to enhance the toughness of the die.It is very easy to create poor strength as well as weak breaking of die because of insufficient tempering treatment.
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