Aiming at requirements of high processing conditions

the thickness of the extruded tube wall only about 0.2 mm as well as absence of damage and inclusion in the wall with smooth for the 1100 aluminum alloy for automobile condensing pipe

the key control points in process of melt treatment

casting and rolling were explored.The results indicate that by adopting the optimizing parameters

the hydrogen content of molten aluminum is less than 0.13 mL/100 g

and microstructure of the alloy presents small equiaxed crystal.The final product is verified by user’s application that its processing performance exhibits the satisfied effects

meeting requirements.