Aluminum Welding Techniques

Aluminum Welding Techniques Points : Aluminum Welding Techniques Aluminum welding either clean or alloyed present no intricacy provide the worker understands the problems which have to he over come and the method in use. Oxide of aluminum (Aluminum Al₂O₃), which is constantly present as a surface layer and which is formed while Al is heat, has extremely high melting point, greatly higher than that of Aluminum, with if it is not detached it would turn into distributed all through the weld resulting in weakness and brittleness. A good flux, melting point 570°C is required to melt this oxide and to stop its formation. But the leftward method is use the blowpipe angle is 40 to 50° with the rod angle 30 to 40° keep the inner cone well over the molten pool. Work might be tack at concerning 150 mm intervals to preserve position. While the weld progresses and the metal become hotter, the rate of welding amplify, and it is common to decrease the angle among blowpipe and weld rather to prevent melting a hole in weld.