M3 - Metals, Part 2

Question 1

machining

Answer 1

a process to remove unwanted materials from the work piece to produce the desired shape

Question 2

work piece

Answer 2

the material and design

Question 3

cutting tool

Answer 3

used to shape the material

Question 4

machine tool

Answer 4

used to design the structure

Question 5

fixture

Answer 5

it holds the devices in machining operations

Question 6

cutting parameters

Answer 6

it is the depth of cut to be done on the material

Question 7

primary machining process

Answer 7

turning, drilling, milling

Question 8

turning

Answer 8

a type of machining which focuses on material removal by rotating the work piece while the cutting tool moves toward it in a linear path.

Question 9

milling

Answer 9

a machining method that uses rotary cutters to remove unwanted materials from the work piece

Question 10

lathe

Answer 10

the device where the work piece is attached and rotated during turning

Question 11

boring

Answer 11

the cut is performed on the inside

Question 12

facing

Answer 12

cut is done across the end

Question 13

drilling

Answer 13

a process that cuts a hole of circular cross section in solid materials

Question 14

joining process

Answer 14

fuse metals together with or without the application of heat or pressure

Question 15

two kinds of joining

Answer 15

permanent joining and semi-permanent joining

Question 16

permanent joining

Answer 16

The metals fused together cannot be separated. If able to, the parts will be damaged.

Question 17

4 types of permanent joining

Answer 17

welding, brazing, soldering, and riveting

Question 18

welding

Answer 18

metal parts are joined at their contacting surfaces by suitable heat, causing a coalescence

Question 19

brazing

Answer 19

joining metals using a filler metal that includes a base of copper combined with silver, nickel, zinc, and phosphorus

Question 20

filler metals

Answer 20

alloys or unalloyed metals, when heated, liquefy and melt to flow between two close fitting parts

Question 21

soldering

Answer 21

joins materials by melting a solder, usually lead, into the joint

Question 22

riveting

Answer 22

a two-headed and unthreaded bolt that holds two pieces of metals together

Question 23

semi-permanent joining

Answer 23

designed to permanently join metals but it can be disassembled without damaging the parts

Question 24

2 kinds of semi-permanent joining

Answer 24

screws

nuts & bolts

Question 25

screws

Answer 25

joins parts together using a screw; does not need a nut but may use one if needed

Question 26

nuts & bolts

Answer 26

uses a bolt and a nut to join two pieces together

Question 27

finishing process

Answer 27

used to treat the exterior of the metal by applying a thin complimentary layer to its surface

Question 28

7 types of finishing

Answer 28

``` metal plating brushed metal buff polishing metal grinding sand blasting powder coating hot blackening ```

Question 29

metal plating

Answer 29

uses a chemical bath to coat the surface of a metal with a another thin layer of metal

Question 30

brushed metal

Answer 30

creates a uniform, parallel grain surface texture to remove surface imperfections

Question 31

buff polishing

Answer 31

gives the metal a smooth, non-textured finish using a cloth wheel to buff its surface

Question 32

metal grinding

Answer 32

uses friction, attrition, and/or compression to smooth out a metal surface

Question 33

sand blasting / bead blasting

Answer 33

forces sand or steel into a surface of a metal (particularly soft metals) with high speed, creating a uniform matte texture

Question 34

powder coating

Answer 34

melting a dry plastic powder onto the metal to create a texture, matte, or glossy coating

Question 35

hot blackening

Answer 35

spreading a thin layer of black oxide onto the surface to create a matte black finish with high abrasion resistance