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Specially Designed High Tech Aluminium frame construction is put together with hanrob self-piercing riveting system, this allows for some movement over extreme conditions to avoid cracking. The frame components of the roof and walls are lock-bolted together as well as to the chassis to create a solid and enduring entity.
Self-piercing rivets also eliminate heat problems associated with spot welding pure aluminum and aluminum alloys which melt below 800 C.
The fasteners are compatible with galvanized and coated surfaces, minimizing damage and eliminating recoating or replating, unlike spot welding.
A lockbolt provides approximately 100% bearing area in the locking grooves. Using a nut and screw there is only 30 to 35% contact, and the applications is vibration sensitive.
When it comes to the self-loosening effect under vibration load, we are all aware of the Junker test, which monitors a bolted joint as it loses its preload when subjected to shear loading caused by transverse vibration.
Compared to conventional bolts and nuts, lockbolts demonstrate superior vibration resistance.
