The difference between pressure and gravity die casting
Pressure die casting and Gravity die Casting both common processes of casting. As an aluminium and Zinc Fabricator in china, Bother processes can be handled in our factory. today we will talk about the difference between pressure and gravity die Casting.And the advantages and disadvantages of each.
Pressure die Casting
Under die casting machine force, push the molten metal liquid into the mold cavity, get the die casting parts after they cool down and open the die. There are 2 types of pressure die casting methods. They are Hot chamber die casting and cold chamber die casting. There are also different machines for different materials. such as aluminium die casting, Zinc die Casting, Magnesium die casting. See Pressure die casting Process.
Gravity Die Casting
The molten aluminum liquid is poured into the die made in advance, and the Gravity die casting machine is tilted, and the aluminum liquid slowly fills the cavity under the action of gravity. The process of getting the casting. See Gravity die Casting Process
Pressure and Gravity Die Casting Material
Different processes use different materials, need depend on material flow, mechanical, resistance, surface treatment; Depending on the function and effect. Pressure and gravity die casting also use different materials. Pressure die casting common use material such as ADC12 ADC10 and A380.Gravity die casting common use material such as A356.2, Alsi9mg, ZL101，ZL201
Advantage and Disadvantage
Advantage of Pressure Die Casting
wide range of applications. High Precision
can be made for complex structure of products
thin-walled products, widely used in cell phones and automobiles
fast reproduction, high yield
High efficiency, high mechanization, High Volume
Diversified surface treatment methods
Disadvantage of Pressure Die Casting
Larger investment, more expensive molds, suitable for large quantities of products
Easy to produce Porosity inside the product, not suitable for heat treatment
Advantage of Gravity Die Casting
1.Wide range of applications for machines, motors, engines, robots
2. Suit for complex structure Products
3. Suit for thick-walled products.
4. Run T6 heat treatment
5 Diversified surface treatment
Disadvantage of Gravity Die Casting
Low efficiency, manual operation.
Low precision, later CNC workload is relatively large.
When choosing which process to produce the product, the choice is mainly based on the wall thickness of the workpiece. When the wall thickness of the product is thicker than 6mm, die casting will cause a lot of porosity inside the wall, so thicker products can be Manufactured by gravity die casting. don’t know how to choose it? Let our Export engineering team give some advice on it.