The Causes Of Peeling Zinc Alloy Die Castings
As a precision casting method, zinc alloy die casting is used in more and more fields. So many times we need to take the initiative to learn some relevant information, because only in this way can we face the problem calmly. In this regard, the editor will discuss with you the reasons for the peeling of zinc alloy die castings?
- First of all, we need to know that peeling is generally a splash caused by uneven filling or slow flow. If the temperature of the mold part is low, the metal entering the cavity first solidifies on the inner surface of the mold, which is prone to spalling.
- In addition, if the instantaneous impact force is too large during the die casting process, or the rigidity of the mold is insufficient, resulting in deflection and deformation, a thin layer will be formed between the product and the surface of the mold. Over time, zinc alloy die castings will appear peeling.
- Many times, this happens in some zinc die casting services and factories. Due to the limitation of the product structure, it is easy to cause the local temperature on the mold to be too high. After the mold is opened, the zinc alloy die casting will flow out from the unsolidified aluminum liquid. If it is not well combined with the casting at this time, it will be affected by external forces to a large extent, resulting in peeling defects.
- Since the product requires air tightness test, there is a high risk of leakage in local parts, so local extrusion is designed to prevent leakage. Combined with the actual use of the production site, if the local operation is improper, peeling will also occur.
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