In body construction, hemming is used in assembly as a follow-up operation after deep-drawing, trimming and flange operations to join class A parts to inner parts for reinforcement. The typical components for this type of joining process are:
- Engine outer and inner hoods
- Exterior and interior doors
- Tailgates with the interior reinforcement part
- Trunk lids with interior reinforcement part
- Side panels
- Wheel arches
The precision in the hemming operation is particularly important, because it affects the appearance of the surface and the surface quality. This is where NORMATEC company comes into play in the fine tuning of the hemming equipment.