Plastic mould steel The life span is generally divided into five levels. The first level is more than one million times, the second level is 500000-1000000 times, the third level is 300000-500000 times, the fourth level is 100000-300000 times, and the fifth level is less than 100000 times.
The first and second mold in the choice of steel, the best heat treatment and hardness in HRC50 steel, otherwise easy to wear, injection molding products will be very poor, of course, other aspects of the problem also need to be considered.
There are a lot of pre hardening materials for the third stage die, the grades are s136h, 2316h, 718H, 083h, and the hardness is hb270-340.
P20, 718, 738, 618, 2311, 2711 are used for the fourth and fifth grade dies. For the dies with extremely low requirements, S50C and 45 ා steel may be used, that is, the cavity is made directly on the die blank.
Dongguan Kaiwang metal products Co., Ltd Is a professional sales, processing, logistics in one of the mold steel suppliers. Have a deep understanding of die steel, mainly engaged in domestic, imported die steel, cold die steel, hot work die steel, plastic die steel, powder high-speed die steel, carbon die steel and other products.