How To Use a MIG Welder

MIG welding can be used to add professional touches to your projects.There are many practical uses for MIG welding.Follow the guide to learn how.

Step 1: You can learn the basics of MIG welding.

The process is called GMAW and it’s also known as MIG welding.During World War II, MIG welding was developed to create strong, durable joints.It is used in a lot of shop and factory applications.

Step 2: Learn how it works.

A wire is fed into a MIG gun through a machine.The welding current is transferred to the wire by the contact tip.The base metal and the wire have arcs.Inert gas can be used to shield the welding process from the atmosphere.There are several ways to transfer metal.

Step 3: Understand the applications.

You can make repairs around the home if you learn how to use a MIG welder.A MIG welder can be used on all types of steel.Base metal and welding wire have differing levels of shielding gases.

Step 4: Pick out your safety gear.

A full set of safety equipment is required for welding.Gloves, masks, and protective clothing are included.Make sure that your skin is protected from the sun’s harmful rays.A mask with a #10 shade or darker is required.Arc eye can be prevented by this.If you are working in a poorlyventilated area, you will need a mask to protect yourself from the harmful fumes that come from welding.Gloves can protect your skin from molten metal.A bucket of sand and a CO2 extinguisher are needed for emergency fires.

Step 5: Select a gun that is comfortable.

Some are shaped like pistols and others like acetylene torches.The project size will affect the size of the machine.A MIG gun can be water or air cooled.It is easier to manipulate air-cooled guns in small areas.Home MIG welders use the air-cooled gun.

Step 6: Prepare the area to be welded.

To find a good surface for welding, remove all flammable material.Most shops have a large metal workbench that the ground is hooked up to.Set up welding curtains around the work area if there are other people present.They will be protected from UV damage.

Step 7: The proper wire needs to be obtained.

The material you are welding should be the same wire type.If you are welding a piece of metal, use a wire.There are two main types of wire for steel welding.It is an all-purpose steel wire.This is the most economical choice.The high-quality steel wire is designed for welding on rusty or dirty steel.No shielding gas is required.It can be used for welding in high winds.The thickness of the metal you are welding will affect the diameter of your wire.Thin wire can be used for thin metals and thicker wire for thicker metals.You might need a bigger machine for thicker metals.

Step 8: Prepare the reel.

The tension on the reel needs to be tightened to prevent the wire from unraveling.The first 3 inches of the wire should be straight to avoid tangles and damage to the line feeders.To trim the wire, use a wire cutter.

Step 9: Attach the wire to the torch.

Feed the wire into the guide tube.Put it in the wire liner.The wire may not be aligned correctly if you have to use force.Bad welds can be caused by rust or grease on the wire.To clean a dirty wire, use a dry cloth.When not in use, the wire will become rusty.The wire can be pushed through the welder by using the wire feed mechanism.

Step 10: The tension should be adjusted.

You will need to adjust the tensioner once your wire is fed through.Too much tension will cause the mountings to bend.The line can still be fed through if the tension is kept at a minimum.Check the tension on the reel and line feeders.Both should be as low as possible.

Step 11: The welding machine should be set to work with DCEP.

This is not the same as the other way around.

Step 12: Stay consistent with the electrode length.

Keep your electrode extended between 14” and 3/8” from the contact tube.This will make for a clean weld.

Step 13: The shielding gas should be used.

Carbon dioxide can be used to provide deeper penetration on steel.It will be too hot for thin metals.A mixture of carbon dioxide and argon is used for thinner steel.

Step 14: Drag or push welding can be used to make a joint.

The angle should not be greater than 10 degrees.The wire should be kept at the front edge of the pool.This will give you more control.The bead is pulled along with the tip.This will give you a narrower bead.The bead is pushed with the tip.This will give you a bigger bead.

Step 15: A flat weld can be made.

The welder can place material directly into the joint.A back and forth method can be used to fill large gaps.The gun should be held at a 90 angle.

Step 16: A horizontal weld is made.

The gun angle needs to be lowered to keep the filler from sagging.The push or pull angle should be the same.To fill large gaps, use a back-and-forth weave motion.Keep the amperage the same.To keep the weld pool from getting too big, you may need to use a smaller diameter wire.

Step 17: A vertical weld is made.

If you want to move the pool down with gravity, start at the top.The material is kept from being penetrated by the arcs.If you want to work up thicker metals, start at the base.This will increase penetration.It is possible to lower the amperage to help fight gravity.

Step 18: You can make an overhead weld.

Increase your travel speed by using standard welding techniques.There is a chance that the filler will fall out of the joint.It is possible that you need to increase your gas flow rate.When welding overhead, spatter will build up faster if your nozzle is clean.

Step 19: The welder needs to finish the job.

When you are done with the welding process, grind off any excess filler.Re-weld the joint if the weld is bad.