Study on Welding Properties of 35CrMo4 Steel

The welding performance of 35CrMo4 steel is a hot research field, some studies show that:

1. Welding deformation: 35CrMo4 steel is prone to thermal deformation and residual stress during welding, which affects its mechanical properties.

2. Welding cracks: Defects such as hydrogen-induced cracks and cold cracks may appear during the welding process of 35CrMo4 steel, which will affect its service life.

3. Welded joint strength: The strength of 35CrMo4 steel welded joints is affected by many factors, such as welding methods, equipment, process parameters, etc.

In order to improve the welding performance of 35CrMo4 steel, the following measures can be taken:

1. Select the appropriate welding method: select the appropriate welding method according to the specific application, such as manual arc welding, argon arc welding, laser welding, etc.

2. Control the welding temperature: Control the welding temperature and heating time to avoid structural changes and residual stress caused by overheating and rapid cooling, and reduce the risk of welding deformation and cracks.

3. Preheating and post-heat treatment: Preheating and post-heat treatment measures can reduce the risk of welding deformation and cracks, and improve the strength of welded joints of 35CrMo4 steel.

4. Select the appropriate welding material: choose the welding material that matches the 35CrMo4 steel, which can effectively avoid problems such as weld cracks.