Improve the Welding Process: For welded square tubes, optimize welding parameters such as current, voltage, and welding speed to ensure weld quality and reduce the risk of welding stress and crack formation.
Optimize the Bending Process: During the bending process, reasonably control the bending angle and force to avoid excessive stress concentration at the R-corner. Consider adopting multi-pass bending or pre-bending treatments to distribute the stress.
Heat Treatment: For square tubes requiring heat treatment, strictly control the heating temperature and soaking time to prevent overheating that may lead to material property degradation or the generation of new cracks.
