Dynacast injected metal assembly machine

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Sub Assembly

A sub assembly connects small, metal components through techniques like insert molding and overmolding.

Insert Molding

Overmolding

Why Choose

Insert Molding?Insert molding is a manufacturing process where metal components are placed into a mold before molten metal is injected around them to form a finished part. Our proprietary injected metal assembly (IMA) process is a specific type of insert molding that begins with a custom tool featuring cavities for multiple components. These components are placed into the tool, and molten zinc is injected. The zinc alloy fills the cavities, hardening to create a permanent bond between the components.

Benefits of Insert Molding and Injected Metal Assembly

Strengthened structure
Reduced Assembly
Complex geometries
Design flexibility
Enhanced aesthetics

Common Applications of Insert Molding

Electronic connectors
Medical devices
Telecommunications satellites
Automotive parts
Consumer products

Key Features Of

OvermoldingThe overmolding process creates a finished product by molding a softer or more flexible material over a rigid metal to form an end product.

Benefits

Reduced assembly
Enhanced functionality
Ergonomic
Enhanced aesthetics
Cost savings

Common Applications

Tool handles
Electronic device grips
Medical devices
Automotive interior components

What Is Sub Assembly?

Sub assemblies, like insert molding and overmolding, integrate components directly into molds during production to create parts with strengthened structures, reduced assembly requirements, and the ability to achieve complex designs. This streamlined approach improves production timelines and cost efficiency.

See All Technologies

What Is Insert Molding?

In die casting, insert molding allows for one metal component to be placed in a mold, having additional molten metal injected around the metal insert to create a finished part. This eliminates the need for secondary operations like welding, tapping, and machining.

Injected Metal Assembly (IMA) Process

This proprietary manufacturing process joins multiple components by injecting molten zinc into a mold holding the parts, creating a single, permanently bonded unit.

A woman performing a die casting sub assembly

What Is Overmolding?

Overmolding involves molding one material (often a softer or more flexible material) over another material (usually a rigid substrate) to create a finished product. This is typically used for cosmetic, texture or durability purposes.