The air conditioning ducting market is split into two levels where ducting flange joining is concerned. The high volume, high strength ducting applications tend to use the pierce rivets approach. The low volume, low strength market typically uses clinching, riv-bonding, pop rivets and spot welding.
Taking into account the overall costs of the process and the cycle times, Henrob Self Pierce Riveting (SPR) still works out to be the most cost effective solution. Fire dampers and sound attenuators are ideal applications for SPR where the advantages of joint security, no hole drilling and swarf are key factors.
SPR is considered a structural rivet or engineered rivet giving the customer the reassurance of a quality product. The clinch process is seen as less robust and for H&S issues it is now becoming less commonly used as a joining process. The same can be said for blind fasteners such as pop rivets.
Other manufacturers in the H&V industry are taking advantage of self pierce rivets. Air conditioning manufacturers for example are assembling heavy duty fans where the fatigue benefits of SPR is the key driver. Other products assembled with Henrob SPR include, air diffusers, roof ventilators, louvres, large housings and cabinets for air conditioning units
Henrob | Self Pierce Riveting
Henrob is committed to pushing the boundaries of HSPR technology to new levels. Its philosophy - "an innovator not an imitator" - is realised in a corporate culture based on entrepreneurial and creative flair. We are extremely proud of having in our Henrob family the largest and most talented group of people solely dedicated to self-pierce riveting technology.
Henrob’s philosophy is to design reliable, robust solutions for production. This is achieved with the aid of 3D computer-aided design (CAD) software allowing in-depth modeling of tools and product access studies. Finite Element Analysis (FEA) software is used to ensure adequate life expectancy of components. Design data can be exchanged via the web, e-mail or FTP servers, offering rapid turnaround of rivet joint designs and equipment proposals.
Henrob applications engineers add fastening and assembly expertise to your technical team. After a careful review of your joint and installation needs, they will propose a complete fastener and tool specification suited to your application requirements and production environment. They may even suggest product design changes to allow more efficient assembly.
Whether developing a new product or streamlining assembly of an existing one, you can rely on Henrob's experience and innovation in fastening technology. From standard tools to customised systems, from rivet joint design assistance to automated assembly cells, Henrob can find your optimal solution.
Henrob fastening systems have benefited applications in a wide variety of industries around the world. View our case studies to see how we have helped customers cut in-place costs while improving their assemblies and finished products.
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.