The gap recession reduced MIG head

In order to reduce the decrease of head output level during running, the wear recession formed on a composite material and MIG heads with various ferrite crystallographic orientations was investigated. It was found that wear recess depends mainly on the wear rate ratio of materials, and that the decrease in output level was in proportion to the spacing loss due to the formation of a level difference at the interface between the metal and the ferrite core. However, the decrease measured using tape different from the running tape was also affected by the unfitness between head and tape. It was also found that the damage caused to metal evaporated (ME) tape depends on the ferrite orientation of the head