Welding Flashcards - Cram.com Welding Processes Quizlet

Hallo ! Welcome to the a domain all about welder, This a domain was created as a means to provide a variety of learning, especially relating to welder actions. this time author will discuss "Welding Flashcards - Cram.com" distinctly, hurry up see more...

In Gas Tungsten Arc (GTA) welding, a stream of inert gas is used to

A - prevent the formation of oxides in the puddle

B - concentrate the heat of the arc and prevent its dissipation

C - lower the temperature required to properly fuse the metal

A - prevent the formation of oxides in the puddle

Which statement best describes magnesium welding?

A - magnesium can be welded to other metals

B - filler rod should be nickel-steel

C - filler rod should be the same composition as base metal

C - filler rod should be the same composition as base metal

Which statement is true in regard to welding heat-treated magnesium?

A - the welded section does not have the strength of the original metal

B - flux should not be used because it is very difficult to remove and is likely to cause corrosion

C - magnesium cannot be repaired by fusion welding because of the high probability of igniting the metal

A - the welded section does not have the strength of the original metal

The oxyacetylene flame for silver soldering should be

A - oxidizing

B - neutral

C - carburizing

Why is it necessary to use flux in all silver soldering operations?

A - to chemically clean the base metal of oxide film

B - to prevent overheating of the base metal

C - to increase heat conductivity

A - to chemically clean the base metal of oxide film

Engine mount members should preferably be repaired by using a

A - larger diameter tube with fishmouth and norosette welds

B - larger diameter tube with fishmouth and rosette welds

C - smaller diameter tube with fishmouth and rosette welds

B - larger diameter tube with fishmouth and rosette welds

What method of repair is recommended for a steel tube longeron dented at a cluster?

A - welded split sleeve

B - welded outer sleeve

C - welded patch plate

Welding over brazed or soldered joints is

A - not permitted

B - permissible for mild steel

C - permissible for most metals or alloys that are not heat treated

Which statement concerning soldering is correct?

A - joints in electric wire to be soldered should be mechanically secure prior to soldering

B - changeable shades of blue can be observed on the surface of a copper soldering tip when the proper temperature for soldering has been reached

C - if the soldering temperature is too high, the solder will form in lumps and not produce a positive bond

A - joints in electric wire to be soldered should be mechanically secure prior to soldering

A resurfaced soldering iron cannot be used effectively until after the working face has been

A - fluxed

B - polished

C - tinned

Which of the following can normally be welded without adversely affecting strength?

1. aircraft bolts

2. SAE 4130 chrome/molybdenum tubing

3. spring steel struts

4. most heat-treated steel/nickel alloy components

A - 2 and 4

B - 1 and 3

C - 2

In selecting a torch tip size to use in welding, the size of the tip opening determines the

A - amount of heat applied to the work

B - temperature of the flame

C - melting point of the filler metal

A - amount of heat applied to the work

Why should a carburizing flame be avoided when welding steel?

A - it removes the carbon content

B - it hardens the surface

C - a cold weld will result

B - it hardens the surface

The most important consideration(s) when selecting welding rod it

A - current setting or flame temperature

B - material compatibility

C - ambient conditions

B - material compatibility

The oxyacetylene flame used for aluminum welding should

A - be neutral and soft

B - be slightly oxidizing

C - contain an excess of acetylene and leave the tip at a relatively low speed

A very thin and pointed tip on a soldering copper is undesirable because it will

A - transfer too much heat to the work

B - have a tendency to overheat and become brittle

C - cool too rapidly

Filing or grinding a weld bead is considered to be

A - an acceptable means to achieve a smoother surface

B - a way to bring about strength reduction in joint

C - frequently necessary to avoid adding excessive weight to a weld joint

B - a way to bring about strength reduction in joint

Acetylene at a line pressure above 15 PSI is

A - dangerously unstable

B - used when a reducing flame is necessary

C - usually necessary when welding metal over 3/8 inch thick

Cylinders used to transport and store acetylene

A - are pressure tested to 3,000 PSI

B - are green in color

C - contain acetone

A welding torch backfire may be caused by

A - a loose tip

B - using too much acetylene

C - a tip temperature that is too cool

Which statement concerning a welding process is true?

A - the inert-arc welding process uses an inert gas to protect the weld zone from the atmosphere

B - in the metallic-arc welding process, filler material, if needed, Is provided by a separate metal rod of the proper material held in the arc

C - in the oxyacetylene welding process, the filler rod used for steel is covered with a thing coating of flux

A - the inert-arc welding process uses an inert gas to protect the weld zone from the atmosphere

Where should the flux be applied when oxyacetylene welding aluminum?

A - painted only on the surface to be welded

B - painted on the surface to be welded and applied to the welding rod

C - applied only to the welding rod

B - painted on the surface to be welded and applied to the welding rod

What purpose does flux serve in welding aluminum?

A - removes dirt, grease, and oil

B - minimizes or prevents oxidation

C - ensures proper distribution of the filler rod

B - minimizes or prevents oxidation

Why are aluminum plates 1/4 inch or more thick usually preheated before welding?

A - reduces internal stresses and assures more complete penetration

B - reduces welding time

C - prevents corrosion and ensures proper distribution of flux

A - reduces internal stresses and assures more complete penetration

How should a welding torch flame be adjusted to weld stainless steel?

A - slightly carburizing

B - slightly oxidizing

C - neutral

Oxides form very rapidly when alloys or metals are hot. It is important, therefore, when welding aluminum to use a

A - solvent

B - filler

C - flux

In gas welding, the amount of heat applied to the material being welded is controlled by the

A - amount of gas pressure used

B - size of the tip opening

C - distance the tip is held from the work

B - size of the tip opening

High pressure cylinders used to transport and store acetylene must

A - be pressure tested to 3,000 PSI

B - be green in color

C - contain acetone

When a butt-welded joint is visually inspected for penetration,

A - the penetration should be 25 to 50 percent of the thickness of the base metal

B - the penetration should be 100 percent of the thickness of the base metal

C - look for evidence of excessive heat in the form of a very high bead

B - the penetration should be 100 percent of the thickness of the base metal

Annealing of aluminum

A - increases the tensile strength

B - makes the material brittle

C - removes stressed caused by forming

C - removes stressed caused by forming

Edge notching is generally recommended in butt welding above a certain thickness of aluminum because it

A - helps hold the metal in alignment during welding

B - aids in the removal or penetration of oxides on the metal surface

C - aids in getting full penetration of the metal and prevents local distortion

C - aids in getting full penetration of the metal and prevents local distortion

If too much acetylene is used in the welding of stainless steel,

A - a porous weld will result

B - the metal will absorb carbon and lose its resistance to corrosion

C - oxide will be formed on the base metal close to the weld

B - the metal will absorb carbon and lose its resistance to corrosion

The shielding gases generally used in the Gas Tungsten Arc (GTA) welding of aluminum consist of

A - a mixture of nitrogen and carbon dioxide

B - nitrogen or hydrogen, or a mixture of nitrogen and hydrogen

C - helium or argon, or a mixture of helium and argon

C - helium or argon, or a mixture of helium and argon

That's the session will be useful for those who read it. Thank you for your visit

Don't forget to bookmark "Welding Flashcards - Cram.com" using Ctrl + D or Command + D (Macos). You can share this article using the share button.