Intro to Manufacturing Processes Exam 2
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Narrow weld B. Wide weld
A. Narrow weld
In an electric arc, the ionized shielding gas atoms are attracted to the: A. Negative pole B. Positive pole
A. Negative pole
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? Can be used to join: A. Only similar materials B. Both similar and dissimilar materials
A. Only similar materials
The blacksmith's hammer and anvil is actually a crude form of: A. Open-die forging B. Closed-die forging
A. Open-die forging
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? Employs an electrode that is of: A. A different chemistry as that being welded B. The same material being welded
B. The same material being welded
Because of the low rate of heat input, oxyacetylene welding is best suited to the joining of: A. Thick steel B. Thin steel C. Al and Cu D. All of these
B. Thin steel
The hottest location in an oxyacetylene flame is at the: A. Tip of the torch B. Tip of the inner cone C. Tip of the outer envelope
B. Tip of the inner cone
Penetration is defined as the distance from the: A. Tip of the electrode to the surface of the workpiece B. Top of the workpiece to the bottom of the fusion zone
B. Top of the workpiece to the bottom of the fusion zone
A high-frequency oscillation is used to break up surface contaminants and bond thin sheets of metal A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
B. Ultrasonic welding
Adhesive bonding can be used to bond: A. Only similar materials to one another B. Virtually anything to anything.
B. Virtually anything to anything.
To produce a significant change in cross-sectional area using the wire drawing process: A. We can use a single die B. We will need multiple dies and multiple passes
B. We will need multiple dies and multiple passes
The joint clearance (at the temperature of the braze) should be on the order of ___ to obtain a high strength joint in brazing or soldering. A. 0.3 in B. 0.03 in C. 0.003 in
C. 0.003 in
Because a fusion weld is actually a mini-casting, one might expect the possibility of: A. Shrinkage B. Gas porosity C. Both of these
C. Both of these
To keep from burning holes in a thin sheet during arc welding (we want the shallowest penetration of the fusion zone), we would select this shielding gas. A. Helium B. Argon C. Carbon dioxide
C. Carbon dioxide
Foil is most likely rolled on this type of mill: A. 2-high B. 4-high C. Cluster D. 3-high
C. Cluster
If a flaw or defect is oriented parallel to a stressed surface, it has the form of a: A. Crack initiator B. Crack propagator C. Crack arrestor
C. Crack arrestor
When the forces of deformation are compressive, the deformation should be performed: A. Cold B. Hot C. Either hot or cold is acceptable
C. Either hot or cold is acceptable
Of the two rotational welding processes, this one produces the larger HAZ A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
C. Friction welding
Portions of the material being joined melts and flows as liquid (along with possible filler metal) to fill the joint A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
C. Fusion Welding
Since the joint material is a mix of the two materials being joined plus possible filler material, all compositions must be similar. A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
C. Fusion Welding
These two processes use non-melting tungsten electrodes. A. OAW & EBW B. GTAW & OAW C. GTAW & PAW D. GTAW & EBW
C. GTAW & PAW
Is sometimes referred to as MIG (metal inert gas) welding A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
C. Gas-Metal Arc Welding (GMAW)
No slag forms, so slag removal is not required A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
C. Gas-Metal Arc Welding (GMAW)
Only a shielding gas is used for protection A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
C. Gas-Metal Arc Welding (GMAW)
The widest variety of both ferrous and nonferrous metals can be welded A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
C. Gas-Metal Arc Welding (GMAW)
The least desirable transfer mode is: A. Short-circuit B. Spray C. Globular
C. Globular
The maximum strength of a brazed joint is: A. About half the strength of the filler material B. Equal to the strength of the filler metal C. Greater than the strength of the filler metal
C. Greater than the strength of the filler metal
The "Perfect Metallurgical Bond" is: A. Easy to achieve B. Achievable depending on the base material C. Impossible to achieve
C. Impossible to achieve
Resistance welding is: A. Good for joining thick plates because of the high rate of heat input B. An excellent process for joining ceramic materials to one another C. Normally used to join thin sheets to one another
C. Normally used to join thin sheets to one another
Metal deformation processes can be used to shape: A. All materials B. Metals and ceramics C. Only ductile materials
C. Only ductile materials
The deformation bonding processes can be used to join: A. All metals B. All metals and ceramics C. Only ductile metals
C. Only ductile metals
It's the most portable of all welding techniques A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
C. Oxyacetylene Welding (OAW)
The low rate of heat input produces a large heat affected zone A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
C. Oxyacetylene Welding (OAW)
Capillary action draws melted filler metal into the joint. The materials being joined do not melt. A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
E. Brazing & Soldering
A "keyhole" can be produced, assuring complete penetration with minimum distortion A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
Has the smallest heat affected zone of the arc welding processes A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
The arc can be as long as 1-inch without going out A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
The high rate of heat input results in a fusion zone with a depth-to-width of about 3:1 A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
The two modes of operation are transferred arc and nontransferred arc A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
This process requires two separate flows of gas (an orifice gas and a shielding gas) A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
E. Plasma Arc Welding (PAW)
The product is a layered sheet or plate material, like the "sandwich" stock for US quarters A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
E. Roll bonding
The materials being joined must be brittle for deformation bonding process. T F
F
A unique characteristic of a good bond is a wavy interface between the two base metals A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
F. Explosive welding
Extremely large sheets of material can be welded to one another by this process A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
F. Explosive welding
Impurities are stripped from the surfaces to be joined by a venting jet of gas A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
F. Explosive welding
Operating conditions can be adjusted to be carburizing, oxidizing, or neutral A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
C. Oxyacetylene Welding (OAW)
Electrons leave the workpiece surface and hot ionized gas atoms or molecules strike the workpiece surface during: A. SPDC (straight polarity) or DCEN B. RPDC (reverse polarity) or DCEP C. AC
B. RPDC (reverse polarity) or DCEP
To produce thin sheet (such as foil), we need to use ___ diameter contact rolls. A. Large B. Small
B. Small
The quick freezing of the fusion zone usually results in the creation of: A. Weak metal B. Strong metal
B. Strong metal
If a material exhibits speed sensitivity, as speed increases, it will become: A. Weaker and more ductile B. Stronger and more brittle
B. Stronger and more brittle
If the hold-down pressure is too high in deep drawing, we will likely produce: A. Wrinkling of the side wall B. Tearing
B. Tearing
The applied forces in wire drawing are: A. Compression B. Tension
B. Tension
The electrode comes into direct contact with the workpiece, and some degree of force is applied A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
3 F. Resistance Spot Welding (RSW)
The forces required for diffusion bonding: A. Are only what is necessary to establish and maintain firm contact B. Must be great enough to induce plastic deformation
A. Are only what is necessary to establish and maintain firm contact
The temperature for diffusion bonding is ___ the melting point of the material being joined. A. Below B. Above
A. Below
The primary difference between brazing and soldering is: A. Brazing is performed at higher temperatures than soldering B. Soldering is performed at higher temperatures than brazing
A. Brazing is performed at higher temperatures than soldering
A noticeable dent or impression is produced at the location where two pieces of sheet are being joined A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
A. Cold indentation welding
The applied forces in extrusion are: A. Compression B. Tension
A. Compression
Low-angle wire drawing dies are often inefficient due to excessive: A. Contact friction B. Internal shear
A. Contact friction
Materials are squeezed together under pressure, resulting in plastic deformation and the creation of uncontaminated surfaces A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
A. Deformation Bonding
The chemistry (or composition) of the filler metal used for brazing and soldering is ___ that of the materials being joined. A. Different from B. The same as
A. Different from
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Fast cooling of the weld B. Slow cooling of the weld
A. Fast cooling of the weld
The portion of a weldment that melts during the joining process is called the: A. Fusion zone B. Heat-affected zone C. Unaffected base metal
A. Fusion zone
This process is also called TIG welding for Tungsten Inert Gas A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
A. Gas Tungsten Arc Welding (GTAW)
Welds made with this medium rate of heat input process have a 1:1 depth/width A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
A. Gas Tungsten Arc Welding (GTAW)
When helium gas is used for shielding, this process has been called "Heliarc" welding A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
A. Gas Tungsten Arc Welding (GTAW)
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? To minimize cracking, it is best if the materials being welded: A. Have little restraint B. Are highly restrained
A. Have little restraint
If we are producing a large part that requires a considerable amount of deformation, we would prefer to do the forming process at a ___ temperature. A. High B. Low
A. High
Resistance spot welding has a ___ rate of heat input. A. High B. Medium C. Low
A. High
In all metal forming processes, the applied stresses must be ___ than the yield strength of the material. A. Higher B. Lower
A. Higher
In brazing or soldering, the strength of the filler metal is ___ the strength of the material being joined. A. Less than B. Greater than C. The same as
A. Less than
The primary role of the flux in brazing or soldering is to: A. Remove oxides and other impurities (i.e. clean the base metal surfaces) B. Reduce the melting temperature of the filler metal C. Reduce the melting temperature of the material being joined
A. Remove oxides and other impurities (i.e. clean the base metal surfaces)
An example of a process where tool-workpiece friction is helpful is: A. Rolling B. Forging C. Extrusion D. Deep drawing
A. Rolling
Wire drawing and deep drawing are almost always performed at ___ temperature. A. Room B. Elevated
A. Room
Because it is limited to the lowest currents, it has the slowest deposition rate and shallowest penetration A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
Finite length "stick" electrodes are used A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
Requires the least expensive equipment A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
The flux is a coating on the outside of the electrode A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
This process is NOT continuous -- (frequently interrupted to change electrodes) A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
To minimize hydrogen (moisture) pick-up, special electrode storage may be required A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
A. Shielded Metal Arc Welding (SMAW)
The pressure applied in diffusion bonding: A. Simply creates firm elastic contact B. Must be sufficient to induce plastic deformation.
A. Simply creates firm elastic contact
Because of the high rate of heat input, electron beam welding has a very ___ HAZ. A. Small B. Large
A. Small
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Small cross-section area B. Large cross-section area
A. Small cross-section area
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Small heat-affected zone B. Large heat-affected zone
A. Small heat-affected zone
The answer to question 7 actually corresponds to: A. The smallest gap where capillary action can pull in liquid B. The largest gap where capillary action still pulls in liquid (#7 The joint clearance (at the temperature of the braze) should be on the order of ___ to obtain a high strength joint in brazing or soldering.)
A. The smallest gap where capillary action can pull in liquid
Arc length is defined as the distance from the: A. Tip of the electrode to the surface of the workpiece B. Top of the workpiece to the bottom of the fusion zone
A. Tip of the electrode to the surface of the workpiece
To produce a significant change in cross-sectional area using the extrusion process: A. We can use a single die B. We will need multiple dies and multiple passes
A. We can use a single die
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? The depth-to-width ratio is: A. Low (<1) B. About 1:1 C. High (>1)
B. About 1:1
When you have a three-part flame in OAW, you probably have too much: A. Oxygen B. Acetylene
B. Acetylene
Resin or filler material is polymerized to create a bond. A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
B. Adhesive Bonding
During cold forming, as deformation progresses, the material: A. Becomes weaker and more ductile B. Becomes stronger and more brittle C. Remains unchanged
B. Becomes stronger and more brittle
Brazing can be used to join: A. Only similar or identical materials B. Both similar and dissimilar materials, even metals to ceramics
B. Both similar and dissimilar materials, even metals to ceramics
The forging process that produces complex shaped parts to near-net shape is: A. Open-die forging B. Closed-die forging
B. Closed-die forging
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? Less weld distortion occurs when the fusion zone is: A. Shallow and wide B. Deep and narrow
B. Deep and narrow
The most desirable fusion zone profile would be: A. Shallow and wide B. Deep and narrow C. Deep and wide
B. Deep and narrow
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. Shallow penetration B. Deep penetration
B. Deep penetration
Brazing and soldering can be used to join: A. Only similar metals B. Dissimilar metals and even dissimilar materials
B. Dissimilar metals and even dissimilar materials
The temperature required for diffusion bonding two materials is: A. Room temperature B. Elevated, but below the melting point of either material C. Above the melting point of either material
B. Elevated, but below the melting point of either material
The flux is on the inside of a tubular consumable metal electrode A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
B. Flux-cored Arc Welding (FCAW)
It is best if we can minimize the size of this region: A. Fusion zone B. Heat-affected zone C. Unaffected base metal
B. Heat-affected zone
The region of a weldment that is not melted, but has been heated above some critical temperature that causes a change in the structure and/or properties of the material is called the: A. Fusion zone B. Heat-affected zone C. Unaffected base metal
B. Heat-affected zone
The hottest arc would be obtained with this shielding gas. A. Argon B. Helium C. Carbon dioxide
B. Helium
The form of extrusion that has the best mechanical efficiency, since it eliminates billet-chamber friction, is: A. Direct extrusion B. Indirect extrusion
B. Indirect extrusion
A non-reflective surface treatment may be required as preparation for welding A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
B. Laser Welding (LBW)
The heat source can be manipulated and positioned by mirrors A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
B. Laser Welding (LBW)
The high rate of heat input for this process produces welds with a 5:1 depth/width. A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
B. Laser Welding (LBW)
A high rate of heat input is usually desirable in welding. Which of the following characteristics are associated with a high rate of heat input? A. High distortion B. Low distortion
B. Low distortion
Which of the following characterizes the "Big Four" consumable electrode arc welding processes? The rate of heat input is: A. High B. Medium C. Low
B. Medium
The time required to produce a diffusion bond is typically on the order of: A. Seconds B. Minutes or hours C. Days or months
B. Minutes or hours
Compared to fusion welding, in brazing and soldering operations: A. Only the material being joined melts B. Only the filler melts C. Both melt
B. Only the filler melts
The heat of the arc is most highly concentrated in this arc welding process: A. SMAW B. PAW C. GTAW D. GMAW
B. PAW
Backup rolls are used to: A. Keep the width constant B. Produce uniform thickness C. Eliminate friction
B. Produce uniform thickness
Crowning of rolls is done to: A. Keep the width constant B. Produce uniform thickness C. Eliminate friction
B. Produce uniform thickness
The molten metal weld pool is very shallow (depth-to-width of about 1:3) A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
C. Oxyacetylene Welding (OAW)
The orifice gas pressure is highest to produce: A. Conventional melt-in PAW B. Keyhole welding with PAW C. Plasma cutting
C. Plasma cutting
During hot forming, the strength of the material: A. Increases B. Decreases C. Remains unchanged
C. Remains unchanged
This type of metal transfer is generally preferred when welding thin material: A. Globular B. Spray C. Short-circuit
C. Short-circuit
What is the basis of your answer to question 9? A. The basic design of a lap joint B. The lower strength of the filler metal C. The "thin specimen effect" (#9 The maximum strength of a brazed joint is: A. About half the strength of the filler material B. Equal to the strength of the filler metal C. Greater than the strength of the filler metal)
C. The "thin specimen effect"
The "Perfect Metallurgical Bond" requires surfaces that are: A. Perfectly flat C. Perfectly aligned B. Perfectly clean D. All of these
D. All of these
The heat source for fusion welding can be: A. Gas combustion B. A laser beam C. An electric arc D. Any of the above
D. Any of the above
We can join ceramics to one another or join metals to ceramics by all of the following EXCEPT: A. Adhesive bonding B. Brazing C. Diffusion bonding D. Any of the deformation bonding processes
D. Any of the deformation bonding processes
The molten pool and hot metal of a fusion weld can be "protected" by: A. A vacuum B. Shielding gas C. A cover slag D. Any of these
D. Any of these
In resistance spot welding, we want the greatest electrical resistance to be: A. In the electrodes B. At the electrode-workpiece interfaces C. In the metal being joined D. At the interface between the metals being joined
D. At the interface between the metals being joined
Which of the following processes does NOT produce a product with constant cross-section shape? A. Wire drawing B. Extrusion C. Rolling D. Deep drawing
D. Deep drawing
A solid-state bond is formed by holding materials in contact for long period of time at elevated temperature A. Deformation Bonding B. Adhesive Bonding C. Fusion Welding D. Diffusion Bonding E. Brazing & Soldering
D. Diffusion Bonding
Because of the extreme depth-to-width, this process requires the most precise fit-up or alignment of the pieces being joined A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
D. Electron Beam Welding (EBW)
Can produce welds with a depth-to-width ratio as high as 25:1 A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
D. Electron Beam Welding (EBW)
Since it requires a vacuum, high voltage, X-ray shielding, etc., this is probably the most expensive of the processes listed above A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
D. Electron Beam Welding (EBW)
Voltages as high as 100,000 volts are employed A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
D. Electron Beam Welding (EBW)
Because the fusion zone normally solidifies quite rapidly, the fusion zone will typically have ___ strength. A "good" weld will normally break in the ___ zone. A. Poor; Fusion B. Poor; Heat-affected C. Good; Fusion D. Good; Heat-affected
D. Good; Heat-affected
To produce spray transfer, we would want to use ___ voltage and current and ___ gas. A. Low, CO2 B. High, CO2 C. Low, argon D. High, argon
D. High, argon
Because a heavy spinning flywheel is used as the energy source in this process, very reproducible welds result A. Cold indentation welding B. Ultrasonic welding C. Friction welding D. Inertia welding E. Roll bonding F. Explosive welding
D. Inertia welding
Diffusion bonding can be used to join: A. Only similar metals B. Only ceramics C. Only metals, but the metals can be dissimilar D. Most combinations of metals and/or ceramics
D. Most combinations of metals and/or ceramics
Has the highest welding currents of the consumable electrode processes A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
D. Submerged Arc Welding (SAW)
Has the largest fusion zone area A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
D. Submerged Arc Welding (SAW)
Overhead or vertical welding cannot be performed A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
D. Submerged Arc Welding (SAW)
Since it has the deepest penetration it can join thick pieces of steel in a single welding pass A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
D. Submerged Arc Welding (SAW)
The arc is buried beneath a layer of flux and is not visible to observers A. Shielded Metal Arc Welding (SMAW) B. Flux-cored Arc Welding (FCAW) C. Gas-Metal Arc Welding (GMAW) D. Submerged Arc Welding (SAW)
D. Submerged Arc Welding (SAW)
The thickness of a rolled sheet or plate can be made more uniform by all BUT: A. Crowning the rolls B. Use back-up rolls C. Apply front and back tensions D. Use smaller diameter rolls
D. Use smaller diameter rolls
High currents are generally required, often in excess of 10,000 amps A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
F. Resistance Spot Welding (RSW)
This process does not require any form of external "protection", since the weld location is fully isolated from any undesirable environment A. Gas Tungsten Arc Welding (GTAW) B. Laser Welding (LBW) C. Oxyacetylene Welding (OAW) D. Electron Beam Welding (EBW) E. Plasma Arc Welding (PAW) F. Resistance Spot Welding (RSW)
F. Resistance Spot Welding (RSW)
Brazing requires higher temperatures than soldering T F
T
