The process performance of metal materials refers to the difficulty of obtaining welded joints under certain welding process conditions, including the combination of performance and performance. Bonding performance refers to the sensitivity of metal to form welding defects under certain welding process conditions, and the use performance refers to the applicability of metal welded joints to the use requirements under certain welding process conditions. Annealing is a common metal material heat treatment process, used to reduce the hardness of metal materials, improve plasticity, reduce residual stress, improve the homogenization of tissue and composition. In addition, the method to test the cold bending performance of metal materials is to bend the material sample to a certain angle around the bending center with a certain diameter or to contact both sides without bending center to judge whether the material is qualified.