High Pressure Die Casting - Quanzhou Shuangta Metal Co., Ltd

Casting Workshop

High-pressure Die Casting

1.High-pressure die casting is a process in which molten metal is forced under pressure into a securely locked metal die cavity, where it is held by a powerful press until the metal solidifies.
2.After solidification of the metal, the die is unlocked, opened, and the casting ejected. After removal of the casting, the die is closed and locked again for the next cycle
Injection process

1.The molten aluminum is injected into the die at high pressure using a hydraulic piston.
2.The pressure is typically between 10,000 and 30,000 psi, depending on the size and complexity of the transmission case.

3.The high pressure ensures that the molten aluminum fills all the cavities of the die and forms the desired shape and design.
Mold of transmission housing

Transmission Cases die for the casting was the key to the whole production process,it can apply to on many case of the automotive such as engine cylinder head,engine block ,valve cover

Die casting raw material specification

Process	Material	Tensile Strenth	Yield Strenth	Elongation	Hardness	Air Tightness
Aluminum Die Casting	ADC12	140-160MPa	80-90MPa	1%-2%	70-80Hb	≤0.3MPa, Requires casting impregnation
Aluminum Squeeze Casting	A356.2	280-320MPa	220-240MPa	8%-12%	85-100Hb	≥0.5MPa, No casting impregnation required
Aluminum Squeeze Casting	AlSi9Cu3	350-370MPa	260-280MPa	2%-3%	115-125Hb	≥0.5MPa, No casting impregnation required
Aluminum Squeeze Casting	S319	350-370MPa	260-270MPa	11%-13%	115-125Hb	≥0.5MPa, No casting impregnation required

Metal casting

Sand casting workshop

Sand casting is the most common example of Expendable mould casting, which generally uses permanent patterns to create the mould. Molten metal is poured into an expendable sand mould cavity by gravity or force, which then solidifies to form the cavity shape part
Lost foam casting

Lost foam casting uses a polystyrene foam pattern to create a sand mould. The pattern then vaporises when the molten metal is poured into the mould. Lost foam casting is sometimes called Expanded polystyrene casting, lost pattern process or evaporative foam casting
Investment casting

Investment casting is an industrial process based on lost-wax casting, one of the oldest known metal-forming techniques.The term "lost-wax casting" can also refer to modern investment casting processes