Question from a netizen in the 286th live broadcast room: How to solve the problem of easily collapsing and sinking at the water inlet position when using SKD61 with 30% nylon fiber?
Nylon reinforced plastic with 30% fibers has a very serious erosion effect on the mold, and it is necessary to use mold steel with good wear resistance to prevent the mold from being eroded.
SKD61 is a medium carbon hot work die steel made of 4Cr5MoSiV1 with a carbon C content of 0.38%. It has good toughness, but its hardness of 50HRC is too low and its wear resistance is poor. It cannot resist the erosion of the mold by the 30% reinforced glass fiber. Using it as a feed inlet is prone to collapse and enlargement.
I recommend LG mold steel, which has both toughness and wear resistance, as well as the material used for the feed inlet based on successful case experience.
LG is a high toughness die steel exclusively developed by Yuhui Company. LG’s toughness is 8-9 times that of DC53, with a hardness of 54-58HRC. Its toughness is so good that it does not break even when bent. A loyal customer from Shenzhen said, “Last time I used LG’s material to make injection molded ports with 30% glass fiber nylon, it was really easy to use
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