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Analysis of common problems in the production of aluminum die-casting auto parts

Jan 13,2022

 


Among auto parts, aluminum die-casting is a practical and advantageous material. It is better than pneumatic materials from manufacturing to application, but it is also prone to defects in the die-casting process. Today I will tell you about it. What is the cause of the problem. Moldy aluminum alloy die-casting parts: For aluminum die-casting products, corrosive substances such as cutting fluid and fingerprints must be completely removed, and then immediately subjected to anti-oxidation treatment and stored in a dry environment. If the workpiece is accidentally damp or in contact with water, it needs to be cleaned and anti-oxidation treatment again. It can be seen that the aluminum die-casting product has returned to its previous appearance and can no longer be seen. Burr and flash of aluminum alloy parts: insufficient mold; too high injection speed, resulting in excessive pressure shock peak; unclean debris on the parting surface; insufficient mold strength to cause deformation; blade and slider wear and uneven separation. The surface of aluminum alloy products has peeling phenomenon: many reasons for this phenomenon are that the mold or injection cavity is not cleaned; it may also be that the injection pressure is not enough. Also pay attention to whether the movable mold retreats during injection; second, there is a problem with the opening of the gating system. The alloy liquid enters the cavity in turbulent flow, which is also caused by problems such as mold temperature.


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