Mechanical Properties of Weld Joint aluminum to copper pipes in refrigeration system

Abstract

This work is dealing to the welding technology of joining copper pipe 
with aluminum pipe which are widely used in refrigeration systems 
and boilers. The chemical composition analysis of both metals show 
that are close to pure copper and aluminum. Experimentally this work 
prove that those metals show a good weldability integrity. 
A weld filler type ER4047 is used to join two pieces of pipes using 
oxyacetylene welding process. This experimental work is also 
involving the achievement of weld integrity and mechanical 
prosperities by performing several destructive and non-destructive 
examination on the weld region such as, Tensile, bending, hardness, 
x-ray and Liquid penetrant). From all of the previous tests it was 
confirmed that, the weld joint maintains a excellent mechanical 
properties and acceptable weld defects.