Causes and preventive measures of aluminum casting

1. The environment, temperature and humidity of aluminum casting products are suitable for mold growth.
2. The surface of aluminum casting products is mixed with supersolution material, which automatically absorbs moisture from the air to form the original battery corrosion reaction, and creates a suitable environment for mold to grow.

on of ensuring the strength of sand, the compactness of sand should be reduced.It is effective to improve the air permeability of sand by sand by sand.

3. Improve the exhaust ability of sand and sand cores: the air hole in the casting type can help the exhaust, keep the air flow of the air hole of the sand core, and the top of the aluminum casting can be set up at the top of the outlet;Adopt a reasonable pouring system.
4. Increase the pouring temperature properly: improve the pouring temperature to allow sufficient time for the invasion of the gas;The casting height and pouring speed should be controlled to ensure the smooth flow and filling of liquid metal.

5. Improve the smelting quality of liquid metal: minimize the sulfur content in iron liquid, and ensure the fluidity of iron liquid;Prevent the liquid metal from overoxidation and reduce the drag of gas.

3. Due to the corrosion reaction of the original battery, the surface precipitates the alkaline compound material, the temperature and humidity of the temperature after the moisture is suitable, and the mold grows rapidly.
4. The surface of aluminum casting products is suitable for soil that is suitable for mold growth, such as oil and vegetable fiber. Once the humidity temperature is appropriate, mould grows rapidly.
Preventive measures for the invasive porosity of aluminum casting during casting
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