Case Study: Changan Automobile reduces welding cracks and development time with Hexagon's Simufact Welding

Avoidance of welding cracks with the help of weld structure simulation

Changan Automobile, one of China's top automotive manufacturers, faced challenges with cracking and deformation in welded components like swing arms and torsion beams. These welding defects, caused by changes in material microstructure, were leading to premature failures. To address this, they worked with Hexagon and utilized their Simufact Welding software to realistically predict and analyze the welding process.

Hexagon's solution used simulation to model the welding process, providing critical data on residual stress and distortion that was previously unaccounted for. This enabled Changan's engineers to adjust the welding sequence and optimize the process, which successfully eliminated the cracking and reduced deformation. The project resulted in a 20% reduction in development time and a 10% cost saving by shifting from physical to virtual testing.

Changan Automobile Company Limited