Case Study: Changan Automobile reduces weld cracking and development costs with Hexagon Simufact Welding

Avoiding Welding Cracks by means of simulation

Changan Automobile Company Limited, a top automotive OEM in China, faced a challenge with premature cracking in weld seams on chassis components like swing arms and torsion beams. The thermal energy from welding altered the material's microstructure, leading to failures under load. To resolve this, they partnered with Hexagon and used its Simufact Welding simulation software.

Hexagon's solution used Simufact Welding to analyze the process and simulate welding residual stress, which was key to reproducing and understanding the cracking issue. By optimizing the welding sequence based on these insights, Hexagon successfully eliminated the cracks and reduced deformation. This approach reduced Changan's development time by approximately 20% and cut costs by 10% by minimizing physical testing loops.

Changan Automobile Company Limited