12 Millwork, Forging, and Powder Metallurgy

Question 1

It is often economical to apply NDT to products intended for secondary operations in order to assure

Answer 1

That prior processing defects are not carried forward into secondary processing

Question 2

Cast ingots that are approximately square cross-sections of large and small size

Answer 2

Blooms and billets

Question 3

Cast ingots that are rectangular in shape

Answer 3

Slabs

Question 4

Oxygen torch burning to remove near surface defects caused by ingot or rolling faults is called

Answer 4

Scarfing

Question 5

Cleaning material in acid baths to attack the scale is known as

Answer 5

Pickling

Question 6

Process for making steel pipe consists of drawing heated bevel edge skelp through

Answer 6

Welding bell

Question 7

Method used for manufacturing of seamless tube

Answer 7

Piercing

Question 8

Tubing operation where a heated cylinder disc is forced through a die by a punch to form a closed bottom cylinder

Answer 8

Cupping

Question 9

Method used to inspect seamless tubing that can have tears and other crack like defects and irregularities in sizing and wall thickness

Answer 9

Eddy current ET

Question 10

Methods used to inspect welds in pipe

Answer 10

radiography RT and ultrasonic UT

Question 11

The extrusion process is used primarily for forming shapes of

Answer 11

Aluminum, copper, lead alloys, and plastic

Question 12

Method most commonly applied to testing tubular products that are intended for high-pressure applications or high-strength structural applications

Answer 12

Eddy current ET

Question 13

Operation that exhibits three dimensional control of the shape

Answer 13

Forging

Question 14

Two types of forging are

Answer 14

Open and closed dies

Question 15

Forging process used for closing or necking of cylinders and for overall reduction of tubular products

Answer 15

Rotary swaging

Question 16

Forging dies are constructed so that in the closed position a space is left at the parting line through which the excess metal is forced into this

Answer 16

Gutter

Question 17

Excess metal that is part of the forging that must be removed in a secondary operation

Answer 17

Flash

Question 18

NDT method that is useful to reveal internal voids, cracks and inclusions in powdered metal parts

Answer 18

Radiography RT

Question 19

Mechanism by which solid particles are bonded by application of pressure or heat, or both

Answer 19

Sintering

Question 20

The application of heat and pressure together, are called

Answer 20

Hot pressing

Question 21

The application of heat after the particle have been closely packed is known as

Answer 21

Cold pressing

Question 22

Improves the density, strength, and ductility of powder metallurgical products

Answer 22

Repressing or coining

Question 23

Inorganic materials, such as oil’s or waxes, maybe infuse into porous metal products for the purpose of lubrication by

Answer 23

Impregnation

Question 24

Product produced by impregnating high melting temperature metals with low melting temperature metals

Answer 24

Cemented steels

Question 25

Method used to determine the adequacy of impregnation of metals

Answer 25

Film radiography and fluoroscopy

Question 26

Cold rolling sheet steel usually begins with the material that

Answer 26

Has been previously hot rolled to dimensions close to the size of the finished product

Question 27

A process that requires the use of large powerful equipment that forms ductile material into a wide variety of long length uniform cross-sectional shapes best describes

Answer 27

Extrusions

Question 28

Product form that is generally selected for high-strength and controlled property directionality

Answer 28

Forging

Question 29

Powdered metallurgy provides two unique advantages in the metal processing. One is the capability to produce shapes and objects of refactory metals that are extremely difficult or impractical to melt; the other is to

Answer 29

Produce metal sheets with controlled porosity

Question 30

A major purpose of pressing the metal powders during powder metallurgy processing is to

Answer 30

Compact the powders into mechanical and atomic closeness

Question 31

In the powder metallurgy process, sintering is

Answer 31

In most cases, a fully solid-state process

Question 32

Powdered metallurgy products cannot

Answer 32

Attain 100% of theoretical density

Question 33

Defect normally found in extruded pipe is

Answer 33

Seam

Question 34

Cracks, seams, laps, and laminations are all dicontunuities of

Answer 34

Forgings