Our unique (patent being reviewed) forming technology allows us to offer:
- Being able to make a more complex tubular bumper to bumper rail in one piece
- Creating large expanded section in the part center - weight reduction opportunity
- Wall thickness control - all subpoints are weight reduction opportunities
- Prevent thin cross section corners, maintain even material thickness distribution around the cross section
- Thinning in the expanded area can be mostly prevented if desired by forcing additional material into the expanded area. The part in would have consistent thickness throughout the length and cross sections.
- Thinning can be allowed to occur in proportion to expansion to reduce weight.
- Thinning can be controlled to be where desiredbetween b) & c). This is likely a more common situation where some supplementary material is provided so the final wall thickness less than what it started at. The weight reduction opportunity is less, but still significant. Larger expansions are achievable than with c).
- Controlled distribution of material - thicker material where it is more beneficial, thinner where it is less needed - Tailor welded or welded tubes or hydroform generated thickness variation
- Close tolerance tube wall thickness
- Some parallel ability to vary material properties locally
- Different materials - aluminum or high strength steels - weight reduction opportunity
- Use smaller tonnage presses; faster cycle.
- Punch all holes during hydroforming
- Making sharper cross section corners
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