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In rotary friction welding, a weld is created by rotating one part while keeping the other part still and applying the right amount of force between the two materials. Not only does this process quickly and efficiently bond two parts together into one, but it also creates what is known as grain refinement, which makes the new part just as strong as a single solid part.

The parent material has certain grain sizes in the pre-welded material. The mechanical and thermal working of the material affects  the grain size and orientation. This gain refinement process can improve the mechanical properties at the weld interface and in some cases, results in a stronger, more reliable material. In other cases, the refined grained material can be restored through post-weld thermal processing.

If you take a magnified look at a weld section from a typical rotary friction weld, you would see a reduction in the grain size near the weld zone. As you move further away from the weld zone, the grain size slowly increases back to the original parent material.

This is important because friction welding allows you to make a part that is the quality of a two-piece forging and get parent material properties as a result.

You Can Depend on MTI Quality

Don’t cut corners with low-quality parts to save money. MTI specializes in producing the highest quality parts from a wide variety of cost-effective materials and has the knowledge and ability to do so quickly and affordably. We’ll build a machine that makes your part, we’ll make the part for you, or we’ll help you make the part even better.

To learn more about friction welding, visit our website or watch how friction welding can be put to work for you.

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