Die casting aluminum mold part is actually a kind of die-casting part, which is manufactured by die-casting machine. In the process of manufacturing aluminum die castings, we will first heat liquid metal aluminum or metal aluminum alloy. After heating, we can pour them into the inlet of the machine, and the die casting machine will produce aluminum die castings according to the shape of the die. Blisters often appear on the surface of aluminum die castings after production. Why?

Because the metal aluminum and aluminum alloy have good fluidity and plasticity, and the casting process is cast in the pressure die casting machine, the aluminum die casting can be made into a variety of more complex shapes, higher precision and smoothness, which greatly reduces the processing capacity of the casting and the casting allowance of metal aluminum or aluminum alloy, and not only saves power and metal materials, And greatly saves labor costs.

As a result, die-casting aluminum mold parts are widely used in automobile manufacturing, internal combustion engine manufacturing, motorcycle manufacturing, motor manufacturing, oil pump manufacturing, transmission machinery manufacturing, precision instruments, beautification, power construction, architectural decoration and other industries. Aluminum and aluminum alloys have excellent thermal conductivity, small specific gravity and high machinability. Blisters and other defects sometimes appear in the processing process. In order to avoid air holes and trachoma in the production process of aluminum die castings, the following points are summarized: in order to ensure the refining and degassing quality of aluminum alloy smelting, select good refining agent and degassing agent, reduce the gas content in aluminum, add water, and timely remove the scum, bubbles and other oxides on the liquid surface, so as to prevent gas from entering the die castings again.

Die casting aluminum mold factory selects good release agent. The selected release agent shall not produce gas during die casting and has good release performance; Ensure that the exhaust port of the mold is unobstructed, and the exhaust port is smooth to ensure that the gas in the mold is completely discharged, especially at the place where the molten aluminum is finally polymerized, the exhaust channel must be unobstructed; Adjust the die casting parameters and the filling speed should not be too fast to prevent entrainment. In product design and die design, attention should be paid to the use of core drawing and cooling to reduce the disadvantage of excessive wall difference to a greater extent; For holes that often appear in fixed positions, the die and design should be improved. To sum up, in the die casting industry, if the above measures are implemented, the porosity of aluminum alloy die casting products can be significantly reduced, so as to significantly improve the product qualification rate.