Zenith Aluminum & Brass Casting Foundry
China sand casting and gravity casting manufacturer

Aluminum gravity casting process

Aluminum gravity casting can also be referred to aluminum gravity die casting,aluminum metal mold gravity casting or aluminum permanent mold casting. Here they describe a same kind of aluminum casting process.

Aluminum gravity casting likes other common ways of casting. The melted aluminum alloy is poured into the mold by means of gravity-fed. Though pouring rate is relatively low, yet the metal mold produces rapid solidification.

Aluminum gravity casting can be operated both by handwork or by gravity casting machines. Because of the low cost of labor force, mostly china gravity casting foundries handle such casting process by handwork without any assistant machines. Though compared that assisted by machines it has a low production capacity, yet for a small quantity of some gravity casting part, such handwork can have a much lower unit price.

Zenith Casting Foundry has been dedicated in aluminum gravity casting from 1990's.During these years,much advanced gravity casting machines have been introduced into Zenith aluminum casting. Those gravity casting machines increased our production capacity considerably.For a substantial order, such machine assisted gravity casting process can meet short lead time and much low unit price. However, handwork gravity casting process is also applied for small orders to save unit cost.

Aluminum gravity cast products show

Our aluminum gravity casting products are supplied to wide industries,including automobile industry,oil field industry, agriculture implements,furniture parts, housing appliance etc. Those gravity casting parts are mostly exported to North American,Europe, and Australia.

You can customize your gravity casting parts with different materials and post treatments according to the functional requirements of the casting. Basically, all the common metal mold gravity casting alloy can be available in Zenith. And we also offer succeeding value added services such as heat treatments, surface treatments( including electroplating,powder coating,painting),assembly etc.

Advantage and disadvantage of aluminum gravity casting

1.Advantage of aluminum gravity casting

A.Good mechanical property compared with aluminum die casting

Aluminum gravity casting parts have excellent mechanical properties compared with that of die casting parts. Because aluminum gravity casting parts has very lower porosity than aluminum die casting parts. ALuminum gravity castings are generally sound, provided that the casting aluminum alloys used exhibit good fluidity and resistance to hot tearing. Besides,mechanical properties of permanent mold castings can be further improved by heat treatment.

B.High volume production compared with sand casting

Aluminum gravity casting is suited to high-volume production. Compared with aluminum sand casting process,aluminum gravity casting process uses permanent mold avoid forming shell every time,thus can save a considerable time for casting process. Furthermore, aluminum gravity casting process can be assisted by gravity casting machines, which can increase the production capacity dramatically.

2.Disadvantage of aluminum gravity casting:

A:Low volume production compared with die casting.

Compared with aluminum die casting process, aluminum gravity casting process has a lower production capacity. Even gravity casting machine assisted process can not reach the high production capacity of die casting process. In most china aluminum gravity foundries, handwork is overwhelming.Thus a large order will require a much long lead time than that of aluminum die casting process.

B:High tooling cost compared with sand casting.

Gravity casting can also be referred to metal mold gravity casting,for the solid metal molds it use. Furthermore, the metal is always expensive tool steel. Compared with wooden or aluminum molds for sand casting,a gravity casting mold is much expensive. Besides,if the mold is for a gravity casting machine, ejection system,cooling system,and sprue system should be added to the mold. That as lo affect the cost a lot.

links to zenith aluminum gravity casting technology database

refer to aluminum metal mold gravity casting alloy designation sheet
refer to china aluminum gravity casting alloys designation sheet
refer to mechanical property and commercial application of aluminum metal mold gravity casting alloys
refer to post treatments of aluminum gravity casting table
refer to process parameter of gravity casting and post machining

FAQ's as to aluminum gravity casting

what's the difference between gravity casting and permanent casting?
what's the difference between metal mold gravity casting and high pressure die casting
how does a gravity casting process perform?
what is the commercial application of metal mold gravity casting?
what is the application status of aluminum gravity cast products in automotive industry?