cap 7 Materiales Flashcards
aprender (36 cards)
1
Q
- Although there are higher costs associated with
any deformation process like hot or cold working, 80% of iron-based materials are finish processed as:
a. cast materials.
b. wrought materials.
c. welded materials.
d. forged materials.
A
b. wrought materials.
2
Q
- Mill products (such as bar stock, plate, and structural shapes) typically represent only a(n)_______stage of manufacture with no specific product in mind.
a. intermediate
b. final
c. postproduction
d. end user
A
a. intermediate
3
Q
- A forming operation that exhibits three-dimensional control over the final shape of a product is called:
a. pressing.
b. cold working.
c. forging.
d. hot working.
A
c. forging.
4
Q
- There are two basic types of forging operations.
The operation that requires the material to be fully confined, at least at the completion of the operation, is known as:
a. open die forging.
b. closed impression die forging.
c. case drop forging.
d. drop case forging.
A
b. closed impression die forging
5
Q
- When inspecting forgings for discontinuities that are open to the surface, but tightly closed, on a part made from ferrous material, which of the following methods would be the most efficient?
a. Radiographic testing.
b. Ultrasonic testing.
c. Visual testing.
d. Magnetic particle testing.
A
d. Magnetic particle testing.
6
Q
- For most forgings, some pre-shaping operations are used to ensure that approximately the right quantity of metal is already at the proper place in the dies before they are closed. These pre-shaping operations include all but which of the following?
a. Upsetting.
b. Drawing.
c. Cleaving.
d. Fullering.
A
c. Cleaving.
7
Q
- Enlarging the cross section of a forging by pressure from the end describes:
a. upsetting.
b. drawing.
c. edging.
d. fullering.
A
a. upsetting.
8
Q
- Reducing the cross section of forging stock throughout describes:
a. upsetting.
b. drawing.
c. edging.
d. fullering
A
b. drawing.
9
Q
- Reducing the cross section of forging stock between the ends describes:
a. upsetting.
b. drawing.
c. edging.
d. fullering.
A
d. fullering.
10
Q
- Distributing the metal of forging stock to the
general contour of the finished stock describes:
a. upsetting.
b. drawing.
c. edging.
d. blocking.
A
c. edging.
11
Q
- Shaping forging stock to rough-finished form without detail describes:
a. upsetting .
b. drawing.
c. edging.
d. blocking.
A
d. blocking.
12
Q
- Bolts, rivets, nails, small gear blanks, and great numbers of small automotive fittings are forged by which of the following processes?
a. Hammer forging.
b. Roll forging.
c. Machine forging.
d. Press forging.
A
c. Machine forging.
13
Q
- When an ingot is first cast, a portion of the top mar be cropped or cut away from the bloom to eliminate a major portion of the impurities, shrink, and poor quality metal originating in the ingot. How much might be cropped or cut away?
a. As much as one-eighth.
b. As much as one-quarter.
c. As much as one-third.
d. As much as one-half.
A
c. As much as one-third.
14
Q
- Billets are smaller than blooms, Blooms are frequently reduced to billet size, which have a maximum cross section of:
a. 154 cm2(24 in.2 )
b. 232 cm2(36 in.2)
c. 309 cm2(48 in.2)
d. 387 cm2(60 in.2)
A
b. 232 cm2(36 in.2)
15
Q
- Products produced by a steel mill that include
strip, sheet, or plate, are classified generically as:
a. final products.
b. rolled products.
c. flat products.
d. rectangular products.
A
c. flat products.
16
Q
- Most pipe manufactured by the welding process
is made of what material?
a. Copper.
b. Stainless steel.
c. Aluminum.
d. Steel.
A
d. Steel.
17
Q
- The term for the wrought iron or steel that has been rolled or forged into narrow strips for pipe or tubing manufacture by drawing is known as:
a. strip.
b. plate.
c. skelp.
d. kerf.
A
c. skelp.
18
Q
- Light-gage pipe or tubing that is manufactured using a continuous spiral butt or lap joint is normally accomplished by which welding process?
a. Submerged arc.
b. Gas metal arc.
c. Gas tungsten arc.
d. Resistance.
A
d. Resistance.
19
Q
- The most common method of manufacturing seamless steel pipe and tubing is by which initial process?
a. Piercing.
b. Resistance welding.
c. Forging.
d. Extrusión.
A
a. Piercing.
20
Q
- The production of seamless tubing can cause tears and other crack-like discontinuities and irregularities in sizing and wall thickness.
Several hundred meters or feet per minute can be examined by which of the following NDT methods?
a. Ultrasonic testing.
b. Electromagnetic testing.
c. Radiographic testing.
d. Visual testing.
A
b. Electromagnetic testing.
21
Q
- The extrusion process is used almost exclusively for which type of material?
a. Stainless.
b. Ferrous.
c. Nonferrous.
d. Anisotropic.
A
c. Nonferrous.
22
Q
- The principal shape limitations of the extrusion process are generally concerned with:
a. length of the product.
b. diameter of the product.
c. cross-sectional thickness.
d. taper of the product.
A
c. cross-sectional thickness.
23
Q
- Cylindrically drawn shapes can be manufactured by shell drawing and which of the following methods?
a. Rotary swaging.
b. Stretch forming.
c. Spinning.
d. Punch forming.
A
c. Spinning.
24
Q
- Rotary swaging is most frequently used for reducing the ends of bar, tube, or wire stock so that it may be started through a die for a drawing operation. Rotary swaging can also be used for the:
a. expanding of tube or stock.
b. closing or necking of cylinders.
c. pinch shearing of rotating stock.
d. spindle shearing of rotating stock
A
b. closing or necking of cylinders.
25
25. When looking at a typical punch and die setup.
the die is normally which half of the tooling?
a. Active.
b. Upper.
c. Middle.
d. Lower.
d. Lower.
26
26. There are three categories of shearing operations. Slitting, parting and dinking are all:
a. finishing operations.
b. hole-making operations.
c. stock preparation operations.
d. slip plane operations.
c. stock preparation operations.
27
27. There are three categories of shearing operations. Perforating, notching, and lancing are all:
a. finishing operations.
b. hole-making operations.
c. stock preparation operations.
d. slip plane operations.
b. hole-making operations.
28
28. There are three categories of shearing operations. Trimming and shaving are both:
a. finishing operations.
b. hole-making operations.
c. stock preparation operations.
d. slip plane operations.
a. finishing operations.
29
29. Reducing large sheet or coil stock to a smaller size for handling purposes or to produce parts with finished or semi-finished shapes is normally done using which of the following?
a. Press brake.
b. Squaring shear.
c. Finger brake.
d. Beading machine.
b. Squaring shear.
30
30. When bending material with any cross section, regardless of how the operation is performed, the stress on the inside of the bend will be:
a. tensile.
b. compressive.
c. shearing.
d. dislocation.
b. compressive.
31
31. When bending material with any cross section, regardless of how the operation is performed, the stress on the outside of the bend will be:
a. tensile.
b. compressive.
c. shearing.
d. dislocation.
a. tensile.
32
32. The most highly developed form of "high energy rate forming" is:
a. hydraulic presses.
b. vacuum presses.
c. explosive forming.
d. electromagnetic forming.
c. explosive forming.
33
33. Often, this metal working technique is used in combination with pressure and heat to produce chemical catalysts, filtering elements, and bearings.
a. Explosión forming.
b. Powder metallurgy.
c. Gas expansion forming.
d. Inductive-repulsive forming.
b. Powder metallurgy.
34
34. Hot pressing and cold pressing are the two most
common________procedures.
a. molding
b. forging
c. sintering
d. forming
c. sintering
35
35. In its broadest sense, the process of _______is the mechanism by which solid particles are bonded by the application of pressure or heat or both and includes welding, brazing, soldering, and the firing of ceramics.
a. forging.
b. sintering.
c. molding.
d. forming.
b. sintering.
36
36. When measuring sheet metal product thickness and only one side of the product is accessible, both the ultrasonic and______ methods will provide highly accurate readings.
a. radiographic testing
b. infrared and thermal testing
c. electromagnetic testing
d. acoustic emission testing
c. electromagnetic testing
