welding quiz 1 ig

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Coalescence

Welding is a joining process that produces _____ of materials by heating them to the welding temperature, with or without application of pressure by the applicatoin of pressure alone, and with or without the use of filler metal

Argon, helium, Carbon dioxide

What gases are used when welding Aluminum?

75% Argon and 25% Carbon Dioxide

What gases are used for welding steel?

100% Argon

What gas is used for welding stainless steel?

Mechanized welding

In which operational mode of welding does a machine control the arc length, gun-angle and gun movement along the weld, but requires an operator to be present to provide joint guidance for the machine?

True

Gas-metal arc cutting is NOT a thermal cutting process

True

Oxyfuel gas cutting is a thermal cutting process

False

Plasma arc cutting is NOT a thermal cutting process

False

Air carbon arc cutting is NOT a thermal cutting process

True

Laser beam cutting is a thermal cutting process

840

Brazing differs from soldering in that brazing filler metals melt above ____ degrees Fahrenheit.

Chemical reaction

Fusion welding can be subdivided into the following four categories: electric arc, electrical resistance heating, a concentrated beam of electrons or laser light and ___.

100

There are ___ welding and closely related cutting processes recognized by the American Welding Society (AWS) as discussed in lecture. We cover some of the most common processes in this class

Mechanical fastening (rivets, bolts, etc.) and Adhesive bonding

Other than welding, which are manufacturing processes used to join components?

Fusion welding

SMAW would be classified under

Advantage

In some cases, a welded joint can be made stronger than the surrounding base metal.

Advantage

Complex or very large shapes can be manufactured using welding processes.

Advantage

Welding can be used to join all commercial metals

Advantage

A welded assembly is often lighter than an assembly that uses mechanical fasteners

Stick welding

SMAW is more commonly known as

2800

The melting temperature of mild steel is about (in degrees F):