deep draw stamping suppliers.Dents on Defects in Aluminum Alloy Die Castings

　　Dent is a type of defect on the surface of aluminum alloy die castings that resembles a disc shape. There are many reasons for its formation. Firstly, it is caused by unreasonable die casting design, large wall thickness difference, unreasonable water supply position, and shrinkage caused by local temperature increase during mold casting. 2、 The cooling system is unreasonable. 3、 Improper operation during casting. 4、 Improper chemical composition ratio. Therefore, the corresponding solution is obtained: Firstly, the wall thickness must be uniform and transitional connections should be used more often. 2、 The introduction position of alloy solution and the increase in the cross-sectional area of internal water. 3、 Properly reduce the mold temperature and pouring temperature, use temperature control and cooling devices, improve the mold thermal balance conditions, and improve the mold exhaust conditions. 4、 Increase boost pressure and extend insulation time. 5、 Improve the location of water supply. 6、 Local temperature requires local cooling.

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