Kylmäpaineliitoksessa

Kylmäpaineliitos, also known as a shrink fit or interference fit, is a mechanical assembly method where components are joined by exploiting the thermal expansion and contraction of materials. In this process, one component, typically the outer one, is cooled down, causing it to contract. The inner component, often a shaft or pin, is then inserted into the contracted outer component. Once the outer component warms up to ambient temperature, it expands, creating a tight, press-fit connection with the inner component.

Alternatively, the inner component can be heated, causing it to expand, and then inserted into the outer component. As the inner component cools, it contracts, securing it within the outer component. This method is particularly useful when high-strength, permanent joints are required without the need for fasteners like bolts or rivets, or welding.

The effectiveness of a kylmäpaineliitos depends on several factors, including the difference in thermal expansion coefficients of the materials used, the temperature differential applied, and the precise dimensions and tolerances of the mating parts. Common applications include fitting bearings onto shafts, assembling gears, and connecting engine components. It provides a strong joint that can withstand significant forces and vibrations. The process is relatively simple and cost-effective, making it a popular choice in various industrial manufacturing settings.