Aluminum Die Casting is common in our daily life, a kind of aluminum alloy Die Casting products, such as common auto parts, watches, computer components, some appliances, etc. can see some alloy Die Casting, then some aluminum alloy castings will appear above Many stomata, how is this going? Does this affect quality?
Aluminum alloy Die Casting hole is mainly caused by stomatal and shrinkage, stomatal was round, while the majority of shrinkage is irregular. When the molten metal in the punch, solidification process, due to gas intrusion, resulting in aluminum alloy casting surface or inside a round hole. Volatile gas from the coating invades the circular hole. Alloy gas content is too high, solidification precipitation will produce a round hole.
The main reason for pinhole formation in aluminum alloy castings is that pinholes are a kind of casting defects that easily appear in aluminum alloy castings and have an impact on the quality of castings. Hydrogen is the main cause of pinholes, and the main source of hydrogen is water vapor Produced by decomposition. Therefore, the cause of water vapor generated during the melting process of aluminum alloy is the main factor that directly affects the formation of pinholes.
Aluminum Die Casting is the use of different shapes of the mold through a certain amount of processing made of different functions of aluminum parts. Its quality determines the quality of other equipment can operate normally, then how to see it is not a qualified product, how to test it. Do not worry, the following is the introduction of aluminum die casting inspection specifications, hope that these instructions will enable you to understand what kind of aluminum parts is qualified.
1, it must be a complete individual, can not have defects, cracks, bubbles and other defects, there can be no Die Casting phenomenon.
2, the casting gate, flash and other parts should always wipe, always keep clean.
3, after the processing of the surface defects can not be mixed with impurities, porosity and other sparse.
4, aluminum parts mandrel machining marks at the level of not exceeding 0.2 mm.
These are only aluminum Die Casting general inspection norms, through which you can also choose a qualified product, if you want to deepen its understanding, I welcome to visit our factory.