STRENGTH OF ALUMINUM ALLOY JOINTS MADE BY CONTACT CAPACITOR WELDING
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Abstract
Currently, aluminum alloys are widely used in various industrial productions and constructions due to the unique properties, which allows creation of lightweight, durable, reliable, corrosion-resistant and aesthetic structures and products for different purposes. Nevertheless, aluminum alloys have a number of disadvantages, the main of which is a more complex and expensive process of manufacturing of welded structures. It requires the use of more advanced technologies such as argon arc welding and friction welding with mixing and qualified personnel in contrary with classical electric welding of steel structures. Such technologies also include the modern method of contact capacitor spot welding, the equipment for which is compact and mobile enough. And its usage does not require highly qualified personnel compared to other aluminum welding technologies. The existing regulatory documentation of the Russian Federation on contact capacitor spot welding does not provide sufficient recommendations for the design and calculation of the strength of joints of this type, which requires additional experimental studies of such joints. The purpose of this work is to determine experimentally the strength of two types of joints made using condenser welding technology and working on tension and shear units of ceiling suspension of sheets and profiles of aluminum alloy AMG2M to rod threaded rods made of aluminum alloy AMG3. For this purpose, 18 joints of these types were tested. Control calculations by standard methods for tension and for shear were performed in order to assess their applicability for analyses of these types of joints.
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