Henrob Self-Pierce Riveting (HSPR) is a cold joining process used to fasten two or more sheets of material by driving a rivet through the top sheet(s) and upsetting the rivet, under the influence of a die, into the lower sheet without piercing it.
Speed and quiet operation are features of each system. Typical riveting cycle time ranges from 1.0 to 4 seconds.
HSPR has a number of advantages over other joining techniques, such as welding and blind riveting:
- joins a range of dissimilar materials such as:
- joins multiple material stacks
- non-thermal process – can be used after coating or painting with virtually no aesthetic or other damage
- low energy demands
- fast cycle times
- operator and environment friendly; no heat, fumes, sparks or waste
- repeatable quality
- visually checkable joint
- compatible with adhesives and lubricants
- automatic rivet feed allows continuous production