Welding Tools 3

The ultraviolet light is:

So intense that it can “sunburn” exposed skin and burn the retinas of unprotected eyes

Welders must, therefore, cover all:

Exposed skin with protective clothing (preferably leather) and wear face shields(helmets) with light filters

The filters are usually very dark:

So the welder can view the welding process itself but nothing else

Newer welding helmets have electronic filters that:

Sense the ultraviolet light from an electric arc and switch from clear to shaded in a split second

Newer welding helmets allow the welder to:

Leave the helmet down while lining up the next weld, saving time consumed by flipping the helmet up and down

Another electric arc welding process that continues to gain attention is:

MIG(Metal Inert Gas) Welding

Why is MIG Welding also known as wire feed welding?

Because the electrode used for the weld process is a wire that is automatically fed from a spool

MIG uses a bottled inert gas(such as argon) to:

Shield the weld, and requires a relatively sophisticated welding machine