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Planning About the Quality of Die Casting Molds

June 18,2021.

  The influence of mold pouring system. The pouring system determines the planning quality of a die-casting mold, and it also determines the primary element of the quality of die-casting parts in the later production. As a system, it has many elements. Its attempt is to make the alloy liquid enter the cavity in a suitable fluid state and to fill the cavity to maximize the exhaust of the gas in the system. Therefore, the die-casting mold should have an excellent pouring system and overflow system.die casting machine


    Since the runner is opened in the direction of the densely distributed side, the molten aluminum will come back to the last dead corner on the upper left side and then come back to produce eddy currents and roll-up phenomena, causing the quality of the left side of the casting to drop significantly, and the air tightness is reduced. The runner plan makes all the molten aluminum basically arrive at the same time to fill and compensate for the lack of partial pouring, so that the overall quality of the casting can be balanced and improved.

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Therefore, in mold manufacturing, the planning of the runner should use the multi-strand method as much as possible. The aluminum flow and the direction of the casting should be different, and try to avoid collisions, so that the occurrence of eddy currents and the occurrence of entrainment due to filling disorder will drop; at the same time, To fill the cavity with multiple runners, it should be filled together as much as possible, and one or more strands of molten aluminum should not come back to the last dead corner and then come back to generate eddy currents.


  From the above analysis, it can be seen that the various defects inside the casting formed by the poor gating system are the direct cause of the poor air tightness of the casting. Equipment function. The pores, shrinkage holes, and cold partitions in die castings are also the primary reasons for the leakage of die castings, and the function of equipment plays a vital role in the production of castings. For products that require strict airtightness, it is necessary to select a suitable die-casting model.

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