TPT November 2014

Article

Fontijne Formitt

Eccentric spinning technology: 15 passes needed to spin the eccentric cone with a reduction of 50 per cent at an offset of 15mm. Processing time is 24 seconds.

Oblique spinning technology: 15 passes needed to spin the oblique cone with a reduction of 50 per cent and a 25° inclination angle. In this example, the processing time is 24 seconds.

Materials and dimensions Fontijne Formitt spinforming equipment is applicable to both ferrous and non-ferrous metals, including stainless and high- alloy steels, to create hollow symmetrical and asymmetrical shapes (eccentric and oblique), fabrications and assemblies.

generate between 20 per cent and 40 per cent more scrap compared to spinforming the shell ends. The minor material waste is caused by the subsequent trimming after spinforming the shell end. Handling As only one part is required for spinforming instead of multiple parts in case of welded end cones, the handling time such as positioning the parts in a welding fixture is reduced, which reduces expensive labour costs or automation. Space saving Industries demand space-saving solutions which fit the currently changing design. Flexibility If prototyping, or a new product needs to be produced, the investment for example in dies for presses is not required. The spinforming machine typically will not require changes in tooling unless the diameter changes; in this case only the part clamp insert changes. Tooling maintenance The maintenance and replacement costs of multiple dies used in combination with a press to form the end cones for welding are significantly higher compared to the forming rollers used in a spinforming machine. This is mainly driven by the number of various dies required and the complexity of the dies compared to the basic forming rollers of the spinning machine. Summary The use of spinforming machines to form tube shaped products leads to a more efficient production process. Significant savings on material and labour costs and the elimination of welding produce a higher quality product, making the spun- formed tube product more reliable.

Potential applications include: • Catalytic converters • Mufflers/resonators • Water jacketed assemblies

• Bulk transfer/large hose couplings • Motorcycle suspension components • Housings for fuel cells • Filtration pipes • Filtration canisters • Sterile floor drains for the construction industry

Fontijne Formitt – Netherlands Kim van Holsteijn Public relations department Tel: +31 10 4348233 Email: k.holsteijn@fontijnegrotnes.com Website: www.fontijneformitt.com

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N ovember 2014