What about the intergranular corrosion of zinc alloy die castings?

100% high-quality die-casting parts of zinc alloy die-casting factory is just a good wish, and the probability of its realization can be said to be very low, and intergranular corrosion is one of the inevitable reasons affecting the high-quality rate, so about zinc alloy die-casting parts What is the phenomenon of intergranular corrosion?

The intergranular corrosion of zinc alloy die-casting is caused by elements such as lead, chromium, and tin contained in zinc alloy die-casting. These elements are equivalent to impurities in zinc alloy, and they will gather in the gap between grains and grains of zinc alloy. , which is the grain boundary of the zinc alloy.

Then corrosion occurs from the grain boundary, which destroys the bonding force between the grains of the zinc alloy die casting, which greatly reduces the mechanical strength of the zinc alloy die casting. Once affected by external forces, the zinc alloy die casting will fracture along the grain boundary.

Based on the damage caused by intergranular corrosion to die castings, zinc alloy die casting plants must operate according to the operation instructions when producing die castings, check the composition of raw materials before die casting, and start from the details.