Production of Patchwork Blanks: Spot or laser welding
First the patch is shaped either by punching or laser cutting depending on shape and size. Three methods can be used to join the patch to the basic blank:
- Spot welding
- Laser welding
- Adhesive bonding
Spot welding
We work spot-on. That also goes for welding in production operations. To ensure we achieve the best possible results from spot welding, we choose from two options depending on requirements. In the first of these, the patch is held in position on the basic blank using just a few spot welds. Joining of the two parts is completed after forming by additional spot welds.
The second option involves considerably more spot welds prior to forming, eliminating the need for subsequent welding operations.
Features of spot welding:
- Sequential spot welding
- Finish welded
- Limited control of forming behavior
Laser welding
Laser welding is used in the manufacture of prototypes. Its features are:
- Fast sequential welding
- Free control of forming behavior and part properties
- Various weld shapes and directions possible
An adhesive bonding process for ThyssenKrupp Patchwork Blanks is currently under development.