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How to make a turnover box mold have a long service life?

Update:28-04-2019
Summary:

For example, to produce a one-to-four-out box mold, it […]

For example, to produce a one-to-four-out box mold, it is necessary to use a pre-hardened steel with a hardness higher than 33 as a mold base, and then select a suitable mold standard.
Second, the hardness of each piece of steel must be controlled, not too hard.
Then, the friction and guiding parts of the tote mold must be finished and no manual work can be used.
Finally, some mold companies will use the return material for mold injection. At this time, we must consider the following two points: A. How to ensure that fine impurities in the plastic do not damage the core and cavity; B. How to prevent impurities from entering the cavity Plastic Crate mould Manufacturers