100
N
ovember
2014
Article
Fontijne Formitt
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.
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.
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:
Website:
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.
