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Structural design and material selection requirements for aluminum die castings
- Aug 15, 2018 -

When designing the structure of aluminum die-casting parts, first consider the problem of the wall thickness of the castings. The difference in thickness will affect the filling. At the same time, it is considered to solve the problem of demoulding, the setting of the draft and the demoulding of the fixed mold. The calculation of the force should pay special attention. Usually, the draft angle is 1~3 degrees. Usually, considering the smoothness of the demoulding, the outer draft is smaller than the inner draft, and the outer draft is 1 degree. The inner drawing die should be about 2~3 degrees.


At the same time, the design of aluminum die-casting parts should take into account the problem of mold design. If there are multiple positions of the pumping heart, try to put two heads as much as possible, and it is best not to put them in the lower position, so that it will be easy to have problems after a long time. Some aluminum die-casting parts can have special requirements, such as fuel injection, dusting, etc. At this time, it is necessary to avoid the important appearance of the layout to facilitate the setting of the gate overflow groove.


In the layout, aluminum die castings should try to avoid the appearance of layouts that lead to complex layout of the molds, such as having to use multiple cores or spirals. For parts that require surface processing, pay attention to the parts design. Suitable processing allowance.


Then there is attention to the selection of aluminum die-casting parts, whether it is ADC12 or A380, etc., depending on the specific requirements; because the aluminum alloy has no elasticity, it is only necessary to match the plastic with the buckle; and usually can not do deep holes, open the mold Only do some holes and then process.