TPT May 2009

P roduction & P rocessing of A utomotive T ube

Weight optimisation of workpieces in the automotive industry

Rotary swaging is a cold forming process. Compared to other forming processes rotary swaging stands out due to its advantages in the processing of tubes. The advantages of the process gain increasing importance due to the current developments in the environment and waste disposal policy.

This method can improve the economy compared to other competing manu- facturing processes. Thus more and more applications come to the focus of the development. Rotary swaging features all advantages of cold forming, such as short process times, exacting tolerances, plane surfaces and material savings due to the avoidance of chips. All metallic materials that can be formed are suitable for rotary swaging. In case of steel this ranges from mild steels to alloy steels up to stainless steel. There is also no problem in using non-ferrous materials such as aluminium, magnesium, titanium and their alloys. In addition to material savings, the process also offers considerable potential in weight optimisation. The savings are highest in case of changeover from solid material to tube. In order to follow this path economically, a process is needed that can form the requested geometries at the internal and external diameter of the workpiece ready-to-fit or at least near-net- shape.

 Piston rod for shock absorber for passenger cars

 Tubular drive shaft  Hollow transmission shaft

 Headrest rod out of stainless steel

Rotary swaging offers forming possibilities that would be difficult to achieve using other forming processes. The forming possibilities at the internal and external diameter enable a weight-optimisation at the workpiece. The method can be used to manufacture cylindrical and conical bores with excellent

www.linsinger.com

Dr. Linsinger-Str. 24 A 4662 Steyrermühl, Tel. +43 7613 88 40, Fax +43 7613 88 40-951 maschinenbau@linsinger.com

Hall 7 Booth A24

For seamless tube, for- ging and rolling mills Visit us!

Inclined Bed Circular Saws

2 Euro per Cut Cutting time: approx. 2:30 min. (Ck45, Ø 380 mm)

66 ›

M ay 2009

www.read-tpt.com