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By engineering Pierce-&-Roll™ rivets so that they never break
through the bottom sheet, Ariel has created a system which can take
full advantage of pre-finished materials. The join attained has
extremely high mechanical strength and significantly enhanced
elasticity far in excess of that obtained by spot welding or
conventional self-piercing.
Frequently the
requirement is to fasten dissimilar materials such as aluminium or
stainless steel to mild steel. Whilst each combination requires a
specific design of rivet, the versatility of SUPASET™ technology is
such that it can cope with a very wide range of combinations.
In Pierce-&-Roll (or
for that matter self-piercing) applications the accuracy of
presentation of the rivet to the work-piece is crucial due to the fact
that there is no pre-pierced hole or spring pilot anvil to guide
rivets into the die. To achieve this accuracy Ariel has developed a
hydraulic applicator with a delivery system which provides precise
guidance for the rivet until it is firmly in contact with the
work-piece. The rivets are fed to the applicator in plastic tape
enabling the applicator to operate in any plane, i.e. from the top,
the side, or the underside of the assembly. It is designed to function
in either a fixed or portable mode and can be operated either manually
or mounted on a robot.
The versatility of the Pierce-&-Roll
system is such that it can replace a whole range of traditional
fastening methods extending from conventional rivets, blind rivets,
and screwed fasteners, through - most importantly - to spot welds.
Not least among the benefits is the cost effectiveness of the system.
The total in-place cost of a Pierce-&-Roll rivets compare
favourably with other methods of fastening.
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