Zinc alloy die casting products are very common on our life, this process and technology also not strange to us. So what are the advantages and disadvantages of zinc alloy die casting? lets dig it out, Keep Reading.
What is zinc die casting?
Zinc alloy die casting is a precision casting method that uses high pressure to force molten zinc alloy metal into a complex shaped metal mold. The density of zinc alloy is 6.4~6.5g/cm 3
Advantages of zinc die casting
Great casting performance
Low tendency of shrinkage Porosity, Can die-cast complex shape, thin-walled precision parts, smooth casting surface.
Diversified surface treatment
electroplating, spraying, painting, oxidation
No iron absorption，no sticky mold
No iron absorption when melting and die-casting, no corrosion of the compression mold, no sticky mold.
Good mechanical properties and wear resistance
The mechanical properties of zinc alloy at room temperature are also high, especially the resistance to pressure and wear are very good
Low melting point
melting at 385℃, easier to shape than aluminum alloy die casting
Disadvantages of zinc die casting
Higher Density
Heavy weight, material cost of zinc alloy is two or three times more expensive than aluminum alloy die casting
Aging Phenomenon
The most serious disadvantage of zinc alloy is the aging phenomenon, the volume rises, the strength decreases, and Longer time will lead to deformation or even shattering of the die casting.
Product size should not be too large
The product size is too large, which will lead to mechanical performance degradation.
Shrinkage Porosity
Because it is high pressure die casting, the die casting process is easy to trap air and cause shrinkage Porosity. the defect will be more visible after surface treatment.
why is zinc used for die casting
Zinc alloy has low melting point, small solidification temperature range, easy to fill molding, small shrinkage tendency, can die-cast complex shape, thin-walled precision parts, smooth casting surface, high dimensional accuracy; low pouring temperature, long mold life, not easy to stick mold, not corrosive mold, so suitable for die-casting
Conclusion
As a China Pressure die casting supplier, we offer aluminium, zinc and miniature zinc die casting parts and molds. Looking for reliable die casting company in china, we offer high quality and precision die casting parts and molds to our customer over world. Get Free Quote Now!