25-08-2017, 09:32 PM
According to our survey in refrigeration industry we came to know that for joining of tubes brazing is used. Brazing process in refrigeration industry has lots of defects such as high fuel cost, highly skilled labor requirement, large quantity of filler material required. So, we are suggesting a process which will remove all the limitations of our current process. Our main idea is to produce a welding fixture which will join the tube by FSW. Traditionally, friction welding is carried out by moving one component relative to the other along a common interface, while applying a compressive force across the joint. The friction heating generated at the interface softens both components, and when they become plasticized the interface material is extruded out of the edges of the joint so that clean material from each component is left along the original interface. The relative motion is then stopped, and a higher final compressive force may be applied before the joint is allowed to cool. The key to friction welding is that no molten material is generated, the weld being formed in the solid state.