Soldering and Brazing Midterm (Multiple Choice)

When welding or cutting overhead or in confined spaces, flame-resistant ___ should be worn to protect the ears.

• hoods

• helmets

• earmuffs

• face masks

While soldering or brazing, if adequate ventilation cannot be provided, wear a(n) ___ that will protect from the toxic airborne materials.

• face mask

• respirator

• air regulator

• oxygen tank

Never expose any part of a compressed gas cylinder to temperatures above ___°F.

• 65

• 85

• 95

• 125

Use goggles, helmets, and shields with Torch Brazing Shade No. ___ filter lenses to protect against ultraviolet light.

Answer

1

3

4

6

• 1

• 3

• 4

• 6

Oil-free protective garments such as ___ should be worn to protect skin from burns.

• leather gloves

• cuffed pants or spandex leggings

• gym shoes

• light-weight cotton shirts and pants

___ joints are often used for connecting underground lines, for joints where the use of heat is impractical, and for joints that may have to be disconnected periodically.

• Flared

• Cup

• Compression

• Brazed

A group of joining processes that produce coalescence of materials by heating them in the presence of a filler metal having a liquidus above 840ºF but below the solidus of the base metals is called ___.

• welding

• brazing

• soldering

• sweating

___ defines welding, soldering, and brazing in order to clarify the distinction between brazing and soldering.

• Underwriters Laboratories (UL)

• Occupational Safety and Health Administration (OSHA)

• American National Standards Institute (ANSI)

• American Welding Society (AWS)

Solder joints are used for domestic water, sanitary drain lines, hot water heating systems, and other lines where maximum temperatures do not exceed ___ºF.

• 100

• 250

• 400

• 1100

Nearly all brazing is done at temperatures above ___ºF.

• 250

• 600

• 1200

• 1500