Description

ArcelorMittal Tailored Blanks has developed a dedicated hybrid (Plasma-Laser) welding process for the Laser Welded Blanks chassis applications. This hybrid (laser + plasma) welding process shows better fatigue performance than a standard laser welding for such applications where fatigue load case are important.

This improved process is due to:

• Softer transition
• Better homogeneity of the welded zone (thanks to slower cooling)
• Softer surface: less sensitive to micro-defects

The principle of the Laser Welded Blanks solution is to integrate the spring pans:

• 1 part instead of 3
• 1 stamping tool
• Less post-stamping assembly operations
• Weight savings: 3.2kg saved (17%)