January 2012 Tube Products International
73
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such as copper, aluminium and brass, the inherent strength of
stainless steel has been something of a stumbling block for the
cold forming process.
For engineers today, there is now an alternative to more
conventional processes using a safe cold forming technique
developed by Dawson Shanahan.
This latest development means that stainless steel, as well
as other exotic metals such as titanium, can be cold formed
using a specialised metallic lubrication and extrusion coating,
avoiding the need for hazardous chemical solutions.
This unique shell, created by the research and development
team at Dawson Shanahan, eliminates the problem of galling,
to prevent damage being caused to the components and
tooling, which often presents itself in the form of scores or
surface imperfections, thus maintaining consistent quality in
finished parts.
The technique has been endorsed by independent laboratory
test results, which show that the process retains all the
mechanical properties of stainless steel without any detrimental
effect on performance.
The advantages of the process will be of particular benefit to
those areas of industry requiring robust, ultra-high precision
parts, including laser applications, where cold formed nozzles
significantly increase cutting accuracy, or in industrial engines
where the parts are used to boost overall reliability, while
cutting CO
2
and particulate emissions.
Equally, other stainless steel components made through cold
forming, such as diesel injectors, are generally more reliable
especially when used with biofuels, as these fuels can place
greater stresses on conventionally manufactured parts.
Dawson Shanahan offers a complete solution, with
everything from prototype to production being designed and
manufactured in-house to reduce both manufacturing lead
time and costs.
With over 80% of its business being exported, the company’s
products meet the demands of a wide range of sectors,
including aerospace, automotive, electronics, laser, medical,
packaging, plasma, power distribution, telecoms and
welding.
Dawson Shanahan Ltd
– UK
Mark Jennings,
technical director at
Dawson Shanahan
