Die casting

High precision die casting involves 3 key elements: the die casting machine, the mold, and the alloy materials, and the die casting could be described as the process of combining pressure, speed, and time to achieve an ideal cast metal part. The pressure applied during the casting process is a different feature from other casting methods. Typically the melted metal was filled into the mold with high pressure and speed, and solidification under pressure as well to form the casted part. Usually, the pressure applied during the casting process is over dozens of Mpa, with the meatal pouring speed of 16~80 m/s, the liquid metal only takes 0.01~0.02 seconds to fully fill the die cavity.

Types of Gravity Die Casting

Low Pressure Die Casting

Low-pressure casting is a method to form castings by filling the cavity with liquid metal under pressure. Casting formability is good, conducive to the formation of clear contours, and clean surface castings. Large thin-walled castings are more favorable to the formation. The organization of products made by die casting is precise and has high mechanical properties.

Vacuum Die Casting

Rayforce vacuum die casting is an advanced die casting process that eliminates or significantly reduces porosity and dissolved gases in die castings by removing the gas in the die cavity during the die casting process, thereby improving the mechanical properties and surface quality of die castings.

Squeeze Die Casting

In Rayforce squeeze die casting process, the metal liquid is poured directly into the cavity without the pouring system, so there is less air absorption and the casting can be heat treated. There is no pouring system, the metal liquid fills the cavity under pressure, crystallization and solidification, good shrinkage effect, fine grains, dense and uniform organization.

Semi-Solid Die Casting

In Rayforce semi-solid die casting process, strong stirring is carried out during the solidification of liquid metal, so that the dendritic network skeleton, which is easily formed by ordinary casting, is broken up to form a scattered granular tissue form, thus making a semi-solid metal liquid, which is then die-cast into billets or castings.

What Are the Types of Die Casting?

Die casting is a casting method in which a liquid or semi-solid metal or alloy, or liquid metal or alloy containing an enhanced phase, which is filled into the cavity of a die casting mold at a high rate under high pressure, and the metal or alloy is solidified under pressure to form a casting. The pressure commonly used in die casting is 4~500MPa, and the die cast metal filling speed is 0.5-120m/s. Therefore, high pressure and high speed is the fundamental difference between die casting method and other casting methods and is also an important feature.

Why Die Casting Is Used

Due to the advantages of die casting, it is widely used, mainly in the mass production of non-ferrous alloy castings.

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