The faults of wire feed system account for over 70% of the total faults of welding robot. It is the main cause of welding defects such as undercut

slag inclusion

partial welding

large granular spatter and burn through

which seriously restricts the production efficiency and cost of company. The fault locations of wire feed system are summarized as "4 sections and 1 wire"

namely welding gun section

gun cable section

wire feeder section

external wire feed pipe section and welding wire section. By means of eliminating method

the fault of wire feed system is accurately located. Based on the wear condition of welding consumables

the aging condition of parts and the quality condition of accessories

the causes of wire feed system faults are analyzed step by step and the corresponding solutions are proposed

which provides useful reference for the high efficient application of welding robot.