Investigation of Friction Weldability of En Aw 6063 Aluminium Alloy Tube to Tube Plate Using an External Tool
The traditional welding methods are commonly used tube to tube plate of heat exchangers and economiser. In this study it was investigated that application of an alternative welding method which called friction welding of tube to tube plate by using an external tool was used joining of AlMg0,7Si (EN AW 6063) aluminium alloy. The AlMg0,7Si plates with dimensions 5x50x70 mm were drilled Ø20,5, Ø21, Ø21,5, Ø22 mm. The four different sizes AlMg0,7Si tubes with dimensions 2 mm wall thickness, 20 mm outer diameter, respectively 45,5, 46, 46,5, and 47 mm length friction welded to plate using an external tool (FWTPET) at constant 900 min-1 tool rotational speed. The vertical force between tool shoulder and tube was constant during the welding, and temperature was measured at every different welding parameters. The shear test was done for determining for welded joints using special fixture. Shear strength of welded joints were determined depend on welding parameters
Eco-friendly aspects associated with friction welding of tube-to-tube plate using an external tool process
The competitiveness among the manufacturers has been forcing the manufacturing processes to be eco-friendly so as to deliver products with lesser impact on the environment, energy demand and other resources consumption. In this regard, this article presents the unique environmentally friendlier aspects associated with an innovative welding process namely friction welding of tube-to-tube plate using an external tool (FWTPET). This process is capable of generating robust weld joints with lesser energy consumption. A comparative analysis of FWTPET with conventional tungsten inert gas welding process has been narrated.
Finite Difference Modeling on the Temperature Field of Substrate in Friction Surfacing
Friction surfacing is an advanced process of great potential, especially in the field of repair and reclamation of worn and damaged components. As a kind of thermal processing technology, the temperature profile and changes of the substrate in friction surfacing are important factors to get coatings of high quality. In this paper, the temperature field of the substrate during the process is simulated by finite difference method. The results are consistent with experiments, reappearing the temperature change of the substrate during friction surfacing, allowing further study on figuration and quality of coatings.