Bubbles appear in zinc alloy die casting.high pressure die casting products

　　Zinc alloy die-casting die-casting has the advantages of smooth surface, wear resistance, high precision, zinc alloy die-casting in the production process of the most common defect is the surface of the casting foam, so what is the cause of the zinc alloy die-casting surface bubble?

　　1. There is too much release agent or mold oil and water, and the design of the mold is too small or too small, so that when the high-temperature zinc alloy slurry is injected into the mold, the gas generated by the release agent cannot be eliminated, resulting in foaming on the product.

　　2. The pressure of the die casting machine is not large enough, so that the gas in the mold is difficult to remove.

　　3. The nozzle is broken or not aligned.

　　4. The press hammer in the furnace is broken.

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