INDUSTRY NEWS BRANCHEN NEWS
24 – 26 April 2012 Hannover / Germany
www.fastenerfair.com
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Good Vibrations
Resisting the potentially disastrous effects of vibration in jointed applications ranging from a smart phone to a wind turbine is a constant challenge for the design engineer, especially when entire life cycle costs are taken into account. Product recall or repair and
Preventing stick/slip effects in difficult applications
The Delta-Protekt® VH 301.1 GZ topcoat, from Dörken MKS-Systeme GmbH & Co. KG, prevents stick/ slip effects when fitting chromium (VI)-free surfaces against e-coated parts. It can also be assembled against
aluminium without any problem and fulfils the specifications of VW’s new norm 1131- 1/2. Combined with the Delta-Protekt® KL 100 zinc flake basecoat the system features corrosion resistance times of over 720 hours in salt spray testing and provides greater resistance to brake fluid, oils and cleaning agents. It improves mechanical properties,
withstands temperatures of up to 180°C for 96 hours, achieves better grip results and ensures that coefficients of friction are kept constant. The coefficient of friction as per DIN EN ISO 16047 lies here in a range between 0.09 and 0.14µges (VDA). The corrosion protection layer’s high resistance to mechanical stress also enables constant coefficients of friction to be maintained even when parts are assembled in or out numerous times. The screw connection retains its friction-locking capacity even when exposed to heat. In terms of loosening under temperature as defined by VW 1131-2, a value of > 0.06 is achieved.
Learning lessons from 2011 While the Fukushima disaster and
Bangkok floods had relatively little direct impact on the European fastener supply chain, repercussions are nevertheless being felt and lessons learned. The 2011 natural disasters highlighted the vulnerability of today’s integrated and world spanning supply chain. Purchasing professionals across all industries realised the importance of systematically assessing supply chain risk to ensure continuity of supply to production processes. While the stringent economic environment faced worldwide during 2012 will inevitably sharpen the focus on cost reduction, the potential risks and costs of supply discontinuities must also be factored into the total cost of acquisition. Fastener Fair Hannover offers an ideal opportunity to explore directly the measures specialist fastener suppliers have in place to ensure both supply and quality continuity and to evaluate the relative advantages of short
rectification in extreme conditions represent major costs of vibration induced joint failure, even where actual lives are not at stake, which can often be the case in critical applications. At Fastener Fair Hannover potential
solutions range from simple and inexpensive solutions such as push on fasteners, to locking nuts and washers, tension control bolts, thread inserts, structural rivets, right through to pre- engineered tensioners, custom-designed to application. No need to worry about getting
the shakes, just talk to an expert at the Fastener Fair.
New regulation extends RoHS scope
range and long range supply options. One clear effect of events in 2011 has been to reinforce governmental focus on alternative energy sources, particularly but not exclusively in Germany. While the proliferation of wind and solar energy generation options unquestionably demands higher performance fastening technologies, it also presents further pressure on the costs of fastening production – with one European fastener manufacturer predicting that, on the current trend, energy will be more significant than labour costs. The long- term trend in fastener raw material costs is now strongly upwards placing an even greater emphasis on the advantages of involving fastener specialists in the early phases of product and production design to ensure holistic cost savings, particularly through production efficiencies and enhance life cycle profitability. Where better to talk to the experts about these potentials than Fastener Fair?
Directive 2011/65/EU, enacted in July 2011, updates and upgrades the original Restriction on Hazardous Substances legislation, increasing its stringency and extending its scope. That’s the view of Jenni Morland, European business process manager at TR Fastenings, who warns that the directive originally targeted very specifically at the electronic and electrical products sector will now extend to a much wider range of finished products, which regardless of its primary function incorporates electronic components. In a recent article Jenni cites as an example a reclining chair that uses an electric motor to power the recline function.
The new regulation, coming into full force in 2013, was at least partially motivated by spot checks carried out by compliance authorities, which discovered up to 20 percent of the finished products tested were not fully compliant to RoHS requirements.
Its provisions include a requirement for CE marking and introduces a duty of due care, rather than due diligence, on all participants in the supply chain to ensure components are conforming.
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