Kylmäpaineliitos

Kylmäpaineliitos, also known as cold pressing or cold joining, is a mechanical joining process used to fasten materials together without the use of heat or fasteners such as screws or rivets. The process relies on plastic deformation to create a strong and permanent bond. In a typical kylmäpaineliitos operation, one component is forced into a recess or through an opening in another component, causing the edges or surfaces of the materials to be deformed and interlocked. This deformation creates a mechanical interlock that holds the parts together.

The effectiveness of kylmäpaineliitos depends on the material properties of the components being joined and the precise control of the applied force and tooling. Materials that are ductile and can undergo significant plastic deformation are well-suited for this method. Common applications include the assembly of automotive components, electronic housings, and various consumer goods where heat could damage sensitive materials or where a clean, fastener-free aesthetic is desired.

Advantages of kylmäpaineliitos include its speed, energy efficiency as no heating is required, and the absence of heat-affected zones, which can alter material properties. It also produces a clean joint without fumes or molten material, making it an environmentally friendly process. The tooling and equipment are generally straightforward, and the process can often be automated for high-volume production. However, the process is limited to materials that can withstand the high pressures involved and may not be suitable for joining very dissimilar materials with significantly different deformation characteristics.