Precision mold manufacturing

Silicone mold-silicone toy mold

Silicone mold-silicone toy moldSeveral Techniques Affecting the Yield Rate of Zinc Alloy Die CastingsThe performance of using zinc alloy die castings.In the zinc alloy die castings, the size of the sh

Silicone mold-silicone toy mold


Silicone mold-silicone toy mold


Several Techniques Affecting the Yield Rate of Zinc Alloy Die Castings

The performance of using zinc alloy die castings.

In the zinc alloy die castings, the size of the shrinkage will occur, and the alloy components that have a greater influence on the dimensional changes of the zinc alloy castings, the size without copper is relatively stable, and the small size changes are generally zinc aluminum alloy castings.

The working range of zinc alloy is narrow, the temperature is lower than 0℃, the impact toughness drops sharply, when the temperature exceeds 100℃, the mechanical properties are significantly reduced.

The aging of the zinc alloy, in the expansion, the decrease in strength reflects the aging phenomenon, and the plasticity decreases. The main reason is that the solubility of lead, tin, and impurities such as zinc and cadmium are too small. Therefore, the content of impurities in materials and melting must be strictly controlled.

Master the chemical properties of zinc alloy die castings

In the die-casting process of zinc alloy die-casting parts, the influence of technology will produce part of the site of zinc and aluminum-rich and zinc-alloy die-casting parts. The strong aluminum-rich phase dissolves preferentially, and the acid zinc phase dissolves preferentially. If the oil is used in addition to strong alkali or acid or etching process, it can cause blistering and coating peeling during electroplating, which will seriously affect the yield of the product. Therefore, zinc alloy die castings are not degreasing and pickling with strong acid or alkali.