Zinc Gravity Casting

We can provide zinc gravity casting service. Zinc gravity casting, also called zinc permanent mold casting, is one of the oldest casting process in the world. The gravity casting have many different styles. Here in our area, gravity casting, always refers to gravity die casting (GDC). It is characterized by using zinc and its alloy as casting material and pouring the molten metal into the semi-permanent or permanent mold to forming the castings. And this kind of zinc casting process also called zinc permanent mold casting. Zinc gravity casting use gravity to force the zinc alloy liquid into the mold, this not like HPDC using high pressure, LPDC using low pressure, rotation casting using centrifugal force to fill the mould with the metal liquid alloy.
Zinc gravity casting is suited to medium or small volumes products and typically parts are made of heavier sections than HPDC, but thinner sections than sand casting.
The main stages in the process are like this Molten alloy is hand or dosed via using mechanical method poured into channels of the tool (the tooling which have already been precoated with a die release agent.),then to fill all the mold cavity. After the part has cooled sufficiently, the die is opened, and then take out of the formed castings for next step.
For Zinc gravity casting, we always use material of zamak 3 or zamak alloy 5, sometimes using other zinc alloys.

Advantages of GDC

Good dimensional stability and accuracy than sand casting.
Smoother cast surface finish than sand casting
Better mechanical properties than sand casting, and also can have heat treatment after casting
Thinner walls available compared to sand casting
Preformed sand core inserts can be used for the case of Reverse draft internal pockets and forms.
Steel pins and inserts can be cast into the part
Faster production times compared to sand casting.

We have more than 16 years of experience in design, manufacture, supply zinc alloy gravity castings. We know how to make high quality zinc castings. And we also know the advantages and disadvantages of this process, we can help our customer to choose the most suitable solution for their products. Now we have provided our aluminum gravity casting products all over the world. The zinc casting parts include gear housing, frame, gear box, case, pipe fittings, cylinder body, engine block, piston, cylinder accessories: cylinder body, cylinder cover, cylinder head, cylinder piston, adaptors and connectors, metal box, light and lamp parts, auto parts, pump parts: pump body, pump housing, pump head, pump cover, pump base; valve body, motorcycle parts etc.

If you have any enquiries or questions, just drop off us a letter to email：sales@nbintime.com, we will take care other things for you! That’s simple.