Processing characteristics of hardened die steel

Most of the die steel is cut before heat treatment, mainly plane milling and end milling of cavities, punches, grooves, etc. After cutting, quenching, tempering and other heat treatments are carried out. At this time, the hardness can reach HRC50~ 60 or even higher. High hardness can ensure the wear resistance of the mold and prolong its service life, but after heat treatment, the parts are easy to deform, the material becomes hard, and the processing performance deteriorates. In order to achieve the final accuracy requirements, only grinding or even manual grinding can be used for finishing .

This processing method has low efficiency, long cycle, late delivery, and high cost, which makes it difficult to meet customer needs. At present, in fact, such a situation has been formed, which company can efficiently process molds, shorten the delivery time, and reduce the corresponding costs, will be able to expand the market, expand sales, and win the competition.

In order to meet the above requirements, people have changed their thinking, whether they can also be used for cutting after the material is heat treated and hardened, especially whether all types of cavities and profiles can also be processed by end mills, making it not only useful For semi-finish machining, even for finishing, to realize partial or complete milling instead of grinding.

The removal volume of parts per unit time of tool cutting is much greater than grinding wheel grinding, that is, its processing efficiency is much higher than grinding, and it is in terms of equipment investment, floor space, environmental protection, and total cost reduction. Can bring many economic and social benefits. When the mold is undergoing a series of processing, care should be taken not to change its characteristics and essence.