Argon arc is a kind of operation with both left and right hands at the same time, which is the same as drawing a circle with the left hand and drawing a square with the right hand in our daily life. Therefore, it is suggested to conduct similar training for those who just start to learn argon arc welding, which will be helpful to learn argon arc welding.

(1) Wire feeding: wire filling inside and wire filling outside.

External wire filling can be used for backing and filling, is to use a larger current, the welding wire head in the front of the groove, the left hand pinch welding wire, constantly sent into the pool for welding, the groove clearance requirements are small or no clearance.  

Because of its advantages of large current, and small clearance, so high production efficiency, easy to master operation skills.  Its disadvantage is that when used as a base, because the operator can not see the blunt edge melting and reverse residual height, it is easy to produce not fusion and not ideal reverse forming.

The left thumb, index finger or middle finger is used to feed the wire, and the little finger and ring finger are used to clamp the welding wire to control the direction. The welding wire is close to the blunt edge of the inside of the groove and melted together with the blunt edge for welding. The gap between the groove is required to be greater than the diameter of the welding wire.  

Because the welding wire is on the opposite side of the groove, you can clearly see the melting of the blunt edge and the welding wire, and the peripheral vision of the eye can also see the situation of the reverse residual height, so the weld fusion is good, and the reverse residual height and fusion can be well controlled.  The disadvantage is that the operation is difficult, requiring the welder to have more skilled operation skills, because the gap is large, so the welding amount has a corresponding increase, the gap is large, so the current is low, the work efficiency is slower than the external wire filling.

(2) Welding handle, divided into rocking handle and mop.   

Rocking handle is to press the welding nozzle on the weld with a little force, and the arm is greatly shaken for welding.  Because the welding nozzle pressure on the weld, the welding handle is very stable in the process of operation, so the weld protection is good, good quality, appearance forming is very beautiful, the product qualification rate is high, especially the welding is very convenient, welding stainless steel can get very beautiful appearance of color.  The disadvantage is that it is very difficult to learn, because the arm shakes a lot, so there is no welding where there is an obstacle.  

Mop is the welding nozzle lightly or not in the weld above, the right little finger or ring finger is also on or not on the workpiece, the arm swing is small, dragging the welding handle for welding.  Its advantage is easy to learn, good adaptability, its disadvantage is that the shape and quality is not good, especially the inverted welding is not easy to apply welding, welding stainless steel is difficult to get the ideal color and shape.