السيطرة على التشوهات الزاوية عند لحام الألمنيوم بطريقة قوس التنكستن المحمي بالغاز الخامل باستخدام تقنية اللحام التراجعي

Abstract EN

Aluminum is most non ferrous materials used in industries today, for its high strength–to– weight ratio, high electrical conductivity, good corrosion resistance and relatively low cost.

Also it is very ductile metal, hence can be easily worked and machined.

As well as it is can be easily casted and welded.

On the other hand, the Tungsten Inert Gas welding is the most common used method of welding this type of metals today.

Welding of aluminum by this process unfortunately, associated with many distortion, and the uncontrolled or excessive distortion increases the manufacturing process cost due to expense of rectification or may replacing the weldment.

Tungsten inert gas welding of aluminum was done using Back-step Technique with a various lengths of stitches.

As well as without using this technique for comparison.

Results showed that the angular distortion was notably reduced with decreasing of stitches length.

The angular distortion reduced by a value of (11.36 %) when the back-step technique with (75 mm) stitch length was used, and by a value of (14.39 %) when (50 mm) stitch length was used.

Whereas it reduced by a value of (38.64 %) when the back-step welding is done with (37 mm) stitch length.