How to solve bubbles in zinc alloy die-casting parts?

　　To solve this problem, the following measures can be taken:

　　1. Optimize the design of the pouring system, reasonably set the size and position of the gate, diversion cone, sprue, and riser to control the pouring speed and the filling sequence of the molten metal.

　　2. Adjust the working parameters of the die-casting machine, reduce the pouring speed, and avoid the generation of eddy currents.

　　3. Check the exhaust system of the mold to ensure timely elimination of gas during the pouring process and prevent the generation of bubbles.

　　4. Control the temperature of the mold to maintain a constant temperature during the pouring process. This can be achieved by setting up cooling water channels and spraying refractory materials.

　　5. Pretreatment of alloy materials, baking of molten metal to remove gases and impurities.

　　6. Improve processing methods by adopting processes such as low-pressure casting and vacuum casting to reduce the generation of bubbles.

　　7. Reasonably select release agents to reduce their impact on bubbles while ensuring product performance.

　　8. Repair the generated bubbles by polishing, filling and other methods to eliminate the bubbles, and polishing the die-casting parts.

　　In summary, solving the problem of bubbles in zinc alloy die-casting parts requires starting from multiple aspects, comprehensively considering factors such as casting process, mold design, material selection, production management, etc., and taking corresponding measures to reduce the generation of bubbles and improve the quality and reliability of die-casting parts.

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