foundry technology is widely used in the machinery industry, through aluminum casting, die-casting, casting mold for processing products. Hongcheng precision machinery, as an aluminum casting manufacturer in Hangzhou, has foundry machine aluminum casting, daily necessities and auto parts.

    under casting is the incomplete filling of some parts in the forming process of the die castings, or the indentation or thin wall or revealing the embedded parts. A serious lack of casting will cause the die casting to be discarded directly. If the pressure of the die casting machine is not enough, if the corresponding casting machine is purchased according to the characteristics of the product, if the die casting machine can not maintain the corresponding pressure, it will directly produce the under cast product.
    the velocity of the metal liquid inside the mold is not enough to determine the kinetic energy of the metal flow in the cavity. The metal flow is sufficient, then the filling is complete, and vice casting is formed. According to the continuous flow mode, the internal pressure of =5 is determined by the magnitude of the internal pressure of the 5 pressure inside the internal pressure of the 1 pressure injection, and the internal gate speed is determined by the size of the inner gate section 5 in the 5 internal pressure. The ingate speed is not enough to adjust the cross section area of the gate. But the internal gate speed is too high, the metal flow will form spray, causing the casting surface to form pockmarks, and seriously form the gas hole casting. The improper arrangement of the overflow system of the casting mould or the gas waste in the cavity of the mould when the die is too small can not discharge the overflow system in time, but the formation of the metal flow is prevented by the formation of the obstruction in the type cavity.