Molds are usually manufactured entirely, making it difficult to process and materials being wasted. If block processing is used, and screws are used for inserting, the process is complicated and it is not easy to guarantee the progress. Using a glued process, good results can be obtained. Originally, the molds were processed and manufactured using a full-speed steel structure carbide or other high-quality alloy. After the bonding technology was adopted, only the surface part was made of a steel alloy, and the rest was made of ordinary steel materials, thereby saving a large amount of high-quality alloys. Yin Jian can save 60% of precious materials, Yang touch up to 90%. The common glue joints of various molds include guide posts, guide bushes, punches, punch pins, and blanking boards.
Adhesive process is as follows:
(1) The surface of the bonded mold is cleaned and mechanically or chemically treated as necessary.
(2) Epoxy adhesive (formulation: E-44 epoxy 100, JLY-121 polysulfide rubber 20, xylylenediamine 20, alumina powder 100, white carbon black 2).
(3) After the adhesive is applied, it is cured. Curing conditions: 25°C, 24h; 60°C, 4h.
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