Further Processing
MULTI-FORMING TECHNOLOGY
The voestalpine Präzisrohrtechnik GmbH has high complex multi-forming facilities integrating individual operations and connecting them efficiently.
The integration of
- Cutting
- Chamfering
- Bending
- Stamping
- and bulging operations
leads to multi-level process solutions completely automated with the following advantages:
Reduction of production costs
Production of a variety of complex parts on one single facility due to the use of different tools
Low set up time due to a rapid tooling system
Low volume production during ramp-up phase and high volume production with one process solution
One and the same tooling for sampling and serial production
Currently on this facility produced parts are manufactured for the automotive industry and are integrated in seat belt pretensioners.
FORGING TECHNOLOGY
Since December 2005 the voestalpine Präzisrohrtechnik GmbH has a forging facility realising cold and hot forming operations.
The machinery works over 4 oscillating tools which are radial arranged (90°) and form the rotating working piece. The inside contour is defined over mandrel. This simultaneous processing of inside and outside contour reduced operation steps.
The following forming methods are possible.
| Cold forming(swaging) | Cross section reduction 2:1 (50%) Temperature: room | OD tolerance: h9 ID tolerance: H7 |
| Semi hot forming(radial forging) | Cross section reduction 5:1 (80%) Temperature: 500 – 800° C | OD tolerance: h11 ID tolerance: H9 |
| Hot forming(radial forging) | Cross section reduction 15:1 (93%) Temperature: >1000° C | OD tolerance: 1% of OD ID tolerance: 0,5% of ID |
Currently axle housing tubes for rear axles are manufactured on the forging facility. The therefore required tube material is cold drawn and cut to lengths in-house before it will be processed in the forging centre.
On customers demand further production steps as blasting of scaled surfaces (only with hot forming) and turning processes can be offered.
In all these segments voestalpine Präzisrohrtechnik GmbH is using state-of-the-art production technologies.
Advantages of the forging process:
Efficiency
- due to low development costs
- due to low tooling costs
- due to weight reduction as a result of the deformation process
Productivity
- due to low set up times
- due to the combination of axial and rotational forming
- due to short production cycles
Tight tolerances of the inner (H7) and the outer contours (h9)
Excellent grain structure
High surface quality.
