APPLICATION TECHNOLOGY


Flangeform stands up to the test


In June of last year BAS Components Inc was approached by a supplier of specialty fasteners to a large appliance manufacturer. The large appliance manufacturer was in the process of launching a new washing machine and the 3/8 fastener which secures the leveling leg had become a cause for concern as it was not reliably meeting the test requirements.


T


he washing machine was designed with the base consisting of two rails (stampings), one which goes across the front of the machine and a second which goes across the rear of the machine. Each rail contains two


3/8 nuts for the leg attachment located on each end of the rails. The supplier approached BAS with interest in replacing the


current nut with a Flangeform nut. Prototype parts for testing were quickly supplied by the appliance manufacturer and Flangeform 3/8 nuts were quickly installed by BAS for testing. All testing of the BAS Flangeform nuts passed and in fact far exceeded the requirements. Even over insertion and under insertion of the Flangeform nut into the parts could not produce a failure. The decision was made to switch to Flangeform. With an


anticipated yearly usage of over 15,000,000 nuts, automated insertion into the progressive die was the only way to keep up with cycle times. BAS Components designed and supplied two


Flangeform 3/8 nut autofeed systems each consisting of a dual outlet feed bowl which supplies nuts to two feed heads. One feed system was used for the front rail die and one feed system was used for the rear rail die. The dies speed is approximately 35 strokes per minute. The results were the elimination of several operators who


were previously manually installing a substitute fastener for the original so that the launch of the new machine could go on. “Flangeform has allowed for a much stronger attachment


of the machine leg, which is an area which must not fail. The resulting Flangeform automated nut feed system is much more forgiving than the original nut system which was very sensitive to press settings and stamping configurations. The strength of the Flangeform fastener along with the design and reliability of the Flangeform autofeed system has come to the aid of yet another major manufacturer, improving their product while lowering their manufacturing costs.”


arc welding with reduced energy usage, set-up and training time. Doug Philips, director of product management, equipment at


Nelson Stud Welding, said: “Every ship, military or commercial, contains millions of studs and fasteners that are typically welded using electric power. This has a significant impact on a shipbuilder’s utility bills as well as a knock-on effect on the vessel’s construction, operation and maintenance costs.” He adds: “Our one-man portable inverter welders typically operate at less than half the Amperage of traditional stud welders, reducing operating, installation and start up costs. Ken Caratelli, managing director of Doncasters Fastener


Systems division commented: “At Doncasters we’re committed to working closely with customers to develop effective solutions to their day-to-day engineering challenges. With marine fabricators facing ever-increasing energy costs, alongside pressure to keep prices as competitive as possible, the efficiency, environmental and cost benefits of the Nelweld™ N800i means it adds real value for marine fabricators and, in turn, their end customers.”


Greener welding solution W


Nelson Stud Welding, part of Doncasters Group Ltd’s fastener systems division, is solving marine customers’ environmental and efficiency challenges with the launch of a new portable inverter stud welder.


eighing just 40lbs, the Nelweld™ N800i can be operated by just one worker and carried directly into the bowels of a ship for welding operations. Combining manoeuvrability with 50% more output power than existing products, Nelson Stud highlights that the Nelweld™ N800i allows marine fabricators to weld more, as well as larger studs, delivering high-quality, high-speed


150 Fastener + Fixing Magazine • Issue 67 January 2011


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