In addition to automotive applications Henrob’s SPR technology has a wide range of applications and is used on numerous products in the general industry sector including heating and ventilation, road signs, construction and white goods.
The lother market areas which are currently being developed include garage doors, caravans, small trailers/horse boxes, train construction, office furniture and second and third-tier automotive suppliers.
Geographically, Henrob has also responded to the demands of the market place and over the last few years Henrob has put in place a European infrastructure allowing the company to meet the requirements of all the SPR markets currently under development.
Outside of Europe Henrob has facilities in North America and Australia and key distributors and agents in Scandinavia, Korea, Japan, Malaysia and New Zealand.
Henrob only manufacture self-pierce rivets and riveting systems. Henrob is totally focused on providing good self-pierce riveting solutions to customers.
Together with its approved agents Henrob provides a complete service to the customer, from the initial assessment of the application, through design and manufacture of self-pierce equipment and rivets, to installation and after sales service.
Henrob designs and manufactures self-pierce riveting systems and rivets suitable for a wide variety of applications in the construction, white goods and automotive industries, holding key patents in various aspects of self-pierce riveting technology.
Riveting systems range from simple manually operated tools, using hydraulic power, to ultra-sophisticated electric servo powered tools designed for robot mounting and tool changing.
Rivet designs are available to suit applications involving steel, aluminium, plastic and other non-brittle materials.
Rivets can be supplied pre-loaded into tape to suit Henrob’s patented tape feed systems, or supplied loose to suit Henrob RivTrans blow feed systems. All rivets are subject to 100% automated optical inspection to ensure product integrity.
General industry applications:
Self-pierce rivets (SPRs) increasingly feature in a wide range of industries, as manufacturers face the challenges of more extensive use of new materials like aluminium, magnesium, high-strength steels and composites.
The SPR process can join sheets of dissimilar materials, like aluminium to steel, aluminium to magnesium, steel to steel and metals to composites.
During the process the self-pierce rivet is driven into the material to be joined at high force, piercing the top sheets of material spreading outwards into the bottom sheet of material, under the influence of an upsetting die, to form a strong joint.
It is an automated process requiring no holes that delivers high static strength similar to or better than spot welding.
The process produces a fatigue resistant joint that is up to 30% stronger than spot welding. Cycle time is two to four seconds.
Henrob has a range of tool configurations and types of rivet to suit the wide range of general industry applications.
As the global popularity of using steel frames for domestic house construction grows, traditional steel fabrication techniques, such as MIG welding, blind riveting, bolting etc are proving too costly, damaging and unreliable to meet the increasing volume and quality required in today's demanding market place.
Consequently, manufacturers world-wide are adopting Henrob self-pierce riveting as the primary method of construction for the steel frames, lintels, floor joists and roof trusses that are used in house construction.
The benefits of using Henrob self-pierce riveting over existing methods of joining zinc coated steel are as follows: No fumes are given off during riveting, resulting in a clean working environment without the need for extraction.
SPR is a cold process; therefore there is no burning of the zinc coating on galvanised steel sheet. This means that the corrosion resistance of the frame is not compromised and there is no need to dress and paint the weld zone.
Also, the strength of the steel is not reduced, as may be the case in the heat-affected areas of a welded frame. No holes are required for SPR, therefore there is no swarf generated and there are no subsequent alignment problems.
Henrob self-pierce riveting is a fast (around 2 to 4seconds to set a rivet) one shot process giving a consistent, high quality joint.