Research on annealing process of DC53 steel continuous rolling bars
In order to meet the special requirement of processing hardness for DC53 material(hardness≤220 HB),different annealing processes were tested on DC53 hot-rolled cold work die steel.The results indicate that the annealing hardness of DC53 is closely related to the process of spheroidization annealing.The optimal annealing process is the heat-ing temperature of 850℃and the isothermal temperature of 750℃for spheroidization annealing.After applying the op-timal annealing process in production,the hardness of the steel is uniform,with an average hardness of around HB210,and the metallographic structure is qualified,meeting the user's standard requirements.
DC53hot rolled materialsisothermal annealinguniformity of hardness
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