The treatment method for scratches caused by defects in aluminum alloy die-casting molds

　　In recent years, China's aluminum alloy die-casting technology has developed rapidly. Nowadays, aluminum alloy die-casting products have been applied in various fields. However, there are still defects in the production process of aluminum alloy die-casting molds. Now let's discuss with you the causes and treatment methods of pulling defects in the production process of aluminum alloy die-casting molds.

　　Strain refers to the linear or planar strain marks that appear on the casting in the direction of mold opening, with a certain depth. The main reasons for the occurrence of strains are as follows:

　　1. The metal liquid adheres and welds with the mold, resulting in the product being succulent or lacking meat.

　　2. There is damage on the surface of the cavity.

　　3. The inclination of the mold direction is too small or inverted.

　　4. Skewness during ejection.

　　5. Excessive or insufficient pouring temperature, as well as high mold temperature, can cause aluminum liquid to adhere.

　　6. The demolding machine has poor performance

　　7. Aluminum alloy with Fe content less than 0.6%

　　8. The cooling time is too long or too short.

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