Three separate spin welding operations are needed to assemble the four
components that make up an , like the
one illustrated here. Spin welding achieves the melt temperature by
creating friction at the joint. One part of the assembly is rotated,
while the second is held fast in an anvil, a technique that is
particularly well adapted to the jointing of circular components.
The key to its success is maintaining the orientation of the two
components as accurately as possible. Forward Technology Industries has a
range of machines that can achieve this to within 1% of arc. Moreover,
the technique is viable with notoriously difficult-to-weld materials such
as glass-filled nylon - the material of choice for under-bonnet
components such as this reservoir.