Development of design geometry of aluminum fittings for healthy and safety sanitary installations

Abstract

With the development of the aluminum alloy fittings instead of nodular cast iron fittings, corrosion resistance, lightweight, machinability and improvements of the product quality have been important subjects at industry. Various products are wanted to be developed at this industry for the aluminum fittings which are not manufactured in Turkey. In this study, three different 1/2″ Tees were manufactured according to TS 11 standardisations. Design of the aluminum fittings in different countries and nodular cast iron fittings which are produced by Konak Rakor Company were compared with the new design which has outer rings in order to increase strength of the product. On account for maintaining the accuracy of the layout variables, wall thickness of the models were kept fixed in all test subjects. Mechanical properties of different aluminum alloys were compared to nodular cast iron under the 10 Bar pressure with FEM analysis. As a result of the analysis it was observed that the safety factor is 5.75 and the weight is 136 g for the 1/2″ nodular cast iron Tee. Highest FS (factor of safety) value which is 15 between aluminum materials were obtained from the M3/Al and the weight of the design was calculated as 58 g.