Smart Maintenance for MIG Welding

Maintenance for MIG Welding

In this post, we will tell you about some tips, how to do Smart Maintenance for MIG Welding. MIG guns come in different sizes and run the variety of diameters and types of wire. From mild steel to aluminum, tool steel to copper-based alloys, MIG welders today are used in each and every industrial sector — adding the essential die and tool repair at forging shops everywhere.

Maintenance for MIG Welding Tips

1. Drive rolls not cleaned or adjusted properly.

Drive Roll Groove

  • The drive roll groove (and knurls on rolls so configured) can become packed with the drawing compound, industrial grit from grinding, and smoke from welding.
  • This can affect the tensioning and grip on the wire.
  • Smooth rolls used for solid wire are less affected than knurled rolls used for FCAW wires.

2.  Drive roll pressure too high.

  • It’s common, when a feeding problem arises, to tighten the drive rolls in order to grip the wire better, to overcome the problem.
  • This is especially true when using knurled rolls for flux-cored wire.
  • Because of its construction, a flux-cored wire is easy to reshape from round to oval, with drive roll pressure, and when using knurled rolls the wire develops “teeth.”
  • These teeth will start to wear the liner, guides, and tip like a saw.
  • Solid wire, when used with knurled drive rolls, will not change shape like flux-cored wire, but will develop the “teeth,” and similar wear.

3.  Worn spring liner.

  • The spring liner used for almost all cable/hose assemblies is removable and it is replaceable.
  • Almost all spring liners have at least two bends that are constant.
  • One coming out of the feeder, the other in torch neck.
  • The wire rubs the same spot and wears a groove in the liner.
  • This acts as a high-friction area as the groove deepens, and the more bends that are permanent increases the drag on the wire, causing it to “birdnest” at the torch inlet or just stop feeding.

4.  Diffuser/ tip problems.

Welding Diffuser

  • The commonly replaced item in the torch assembly is the tip.
  • Because the tip is at the business end of the torch, it receives the lion’s share of the abuse from the heat, spatters, and the operator.

For more information, or you are facing any problems please contact us.

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