If your handheld laser welding machine wire feeding not smooth, you can following reasons:

Reason 1: The wire feeding tube is bent too much.
Solution: The wire feeding tube needs to be put straightly before welding, if the wire feeding tube is bent, it needs to be cut and reinstalled or replaced.
Reason 2: The welding wire is bent and deformed inside the wire feeding tube.
Solution: The welding wire cannot be bent. If there is any, it needs to be cut to ensure that the welding wire in the wire feeding tube is straight.
Reason 3: The welding wire does not match the wire feeding wheel model.
Solution: Use the same size wire feeding wheel as the welding wire. If the welding wire is stainless steel or carbon steel, use a V-shaped wire feeding wheel and a conventional wire feeding tube. If it is aluminum wire, use a U-shaped wheel and a graphene wire feeding tube.
Reason 4: The screw that locks the wire feeding tube is loose.
Solution: Normally, the screws should be pressed on the spring tube. If it is not pressed, it means that the screw is loose and the spring is retracted. The wire feeding tube needs to be reinstalled.

There is a screw on both the front and back sides.
If you checked all reasons and problem still not solved, you can contact us for getting other solutions for your fiber laser welding machines.