Joining layers of sheet metal together 

Welding of cell tabs onto batteries.

Joining of shaft components.

Weld seams on circular hollow sections.

Methods is usually done in factories using an automated machine.

This welding process is good for complex weld paths in any orientation, i.e. horizontally, vertically or overhead.

Argon is used as a shielding gas.

The electrode that is used have a flux coating.

Hydrogen gets into the metal via moisture in the atmosphere that is absorbed by the flux coating on the electrode.

Moisture can be removed from the electrodes via heating the electrodes before use.

Hydrogen in the welds makes the steel in that area brittle.

Hydrogen Embrittlement does not affect shielded metal arc welding (stick welding).

In brazing, the fluxing agent is used to remove the oxide layer.

The filler used in brazing seals the joints and provide mechanical strength.

Lead is added to the solder metal to lower the melting temperature.

The purpose of the flux in soldering is to reduce the surface tension in the molten solder.

In both cases, the parent metal is not melted.

All forms of welding use electricity as the energy source.

The parent metal or material is temporarily melted so as to form strong bonds.

All forms of welding use either a shielding gas and/or slag to protect the molten metal.

All forms of welding use either a filler rod or a filler powder to fill up any gaps in the joint.

Welding is only applicable to metals.

Chucks used on lathes can only grip on the outer surface of workpieces.

A 3 jaw chuck can be used to hold workpieces in an off centered position.

A 4 jaw chuck is usually self centering.

Straight or tapered turning are operation performed to get the desired outer diameter.

A tailstock (or end stock) is used to support longer workpiece so that it rotates precisely about the desired axis.

A hobs cutter is used to machine internal keyways.

A ball mill is used to machine contoured surfaces and fillets in corners.

An end mill can be used to machine slots.

An indexing table is used to ensure accuracy in positioning when a finite number of equally spaced intervals in one rotation is needed.

A face mill is used to machine flat a large area.

A rotary table is used to precisely rotate the workpiece for positioning and during milling operations.