What is the difference between die casting & injection molding?

Plastic Mold

Die-Casting and Injection Molding both are the manufacturing process. Desired products are manufactured using die-casting and injection molding.

Basic difference between both are materials: In die-casting metals are used whereas ,  in Injection molding materials like – Plastic – Rubber etc. are used.


What is Die - Casting?

Die casting is a manufacturing process that involves injecting molten metal into a mold under high pressure to produce complex metal components. It is a high-pressure casting method that allows for the production of desired intricate shapes with excellent dimensional accuracy and surface finish. Die casting is typically used for mass production of metal parts, especially those made of non-ferrous alloys like aluminum, zinc, and magnesium.

What is Mould and Injection Mold ?

Mould Or Mold is the same . Its just writing style – few people say mould and other says Mold. In American English , It is called Mold.

A mold, also known as a die, is a equipment used in manufacturing processes to shape or form materials. It is a cavity or a hollow space into which molten material is poured or injected to obtain a desired shape.

Molds can be made of various materials, such as metal (e.g., steel or aluminum) or other materials like plastic or silicone, depending on the manufacturing process.

The process begins with the preparation of the die, which is a specialized tooling component made of two halves: the cover die (or ejector die) and the cavity die.

Mold by Intsol

Usage of Injection Molding and 3D Printing:

Although, injection molding and 3D printing are distinct processes – Mainly they are used in manufacturing. Plastic products Manufacturing , Auto Parts Manufacturing etc.

Prototyping:  3D printing is commonly used to create prototypes of parts before investing in injection molding tooling. It allows for faster iteration and design validation,
reducing costs and time associated with traditional mold making.

Mold Manufacturing: 3D printing can be used to produce molds or mold inserts for injection molding. This approach, known as rapid tooling or bridge tooling, enables faster turnaround times for mold production, especially for low-volume production runs.

Injection mould are used in heavy Injection mould Machines where molten materials are injected on high pressure inside the mould to produce desired products. After cooling down the products become hard and ready to use.


Injection Molding Machine
Injection Molding Machine

Plastic raw materials or granules are fed into a heated barrel of an injection molding machine. The material is gradually heated and melted, usually through a combination of heating elements and mechanical break off.

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