How does temperature affect metal during welding?

Temperature plays a crucial role during the welding process, particularly in how it affects the properties of the metal being welded. Welding involves heating metal to its melting point, and as the temperature changes, various physical and chemical phenomena occur in the material.

When heat is applied, it can lead to alterations in the microstructure of the metal, resulting in changes to its mechanical properties. One significant effect of uncontrolled temperature during welding is that it can cause warpage or distortion in the welded components. If the metal is heated too quickly or unevenly, it expands and then contracts as it cools, which can lead to stresses and deformations. These changes may result in residual stresses in the material and can compromise the integrity or fit of the welded assembly.

This understanding highlights why managing temperature during welding is crucial. Maintaining controlled heating and cooling practices can help prevent negative outcomes such as warpage and ensure the quality and performance of the welded joint.