MMET 207 Exam 2 - TAMU – Craig Questions With Correct Answers

MMET 207 Exam 2 - TAMU – Craig
Questions With Correct Answers

Cold Work - CORRECT ANSWER✔✔-O, W, A, D
|| || || || || || ||




O series (Cold Work) - CORRECT ANSWER✔✔-Oil Hardening
|| || || || || || ||




O1, O2, O6, O7
|| || ||




W series (Cold Work) - CORRECT ANSWER✔✔-Water Hardening
|| || || || || || ||




W1, W2, W5 || ||




A series (Cold Work) - CORRECT ANSWER✔✔-Medium Alloy Air
|| || || || || || || || ||



Hardening
A2, A4, A6, A8, A9, A10, A11
|| || || || || ||




D series (Cold Work) - CORRECT ANSWER✔✔-High Carbon, High
|| || || || || || || || ||



Chromium
D2, D3, D4, D5, D7
|| || || ||




Shock Resisting - CORRECT ANSWER✔✔-S series
|| || || || ||

,S1, S2, S4, S5, S6, S7
|| || || || ||




Hot Work - CORRECT ANSWER✔✔-H, P
|| || || || ||




H Series (Hot Work) - CORRECT ANSWER✔✔-H10-H19 Chromium
|| || || || || || || ||



Types
H20-H39 Tungsten Types || ||




H40-H59 Molybdenum Types || ||




P series (Hot Work) - CORRECT ANSWER✔✔-Molded
|| || || || || ||




P6, P20, P21
|| ||




High Speed - CORRECT ANSWER✔✔-M, T
|| || || || ||




M series (High Speed) - CORRECT ANSWER✔✔-Molybdenum Types
|| || || || || || ||




M1, M2, M3-1, M3-2, M4, M6, M7, M10, M33, M36, M41, M46,
|| || || || || || || || || || || ||



M50


T series (High Speed) - CORRECT ANSWER✔✔-Tungsten Types
|| || || || || || ||




T1, T4, T5, T6, T8, T15
|| || || || ||




Special Purpose - CORRECT ANSWER✔✔-L series
|| || || || ||

,L2, L6
||




Carbon steel Hardening Properties - CORRECT ANSWER✔✔-
|| || || || || ||



Hardenability: Biggest back curve/worst hardenability|| || || ||




Hardness: Sharp drop as Temper Temp Increases
|| || || || || ||




Abrasion Resistance: Wear volume grows the most over time
|| || || || || || || ||




Alloy Steel Hardening Properties - CORRECT ANSWER✔✔-
|| || || || || ||



Hardenability: Middle Largest Back curve/middle hardenability
|| || || || ||




Hardness: Slow decline || ||




Abrasion Resistance: Medium wear volume amount
|| || || || ||




Tool Steels - CORRECT ANSWER✔✔-Hardenability: Smallest Back
|| || || || || || ||



curve/best hardenability ||




Hardness: Goes down a little, then back up, then sharp drop
|| || || || || || || || || ||




Abrasion Resistance: Least amount of wear volume
|| || || || || ||




Safety in Hardening - CORRECT ANSWER✔✔-Risk of Damaging from
|| || || || || || || || ||



hardneing (quench cracks) || ||




Eutectic Structures - CORRECT ANSWER✔✔-spread out carbide
|| || || || || || ||



structures

, Eutectic Networks - CORRECT ANSWER✔✔-Long multiple chains of
|| || || || || || || ||



carbide structures ||




Severe Banding (cause and effect) - CORRECT ANSWER✔✔--caused
|| || || || || || || ||



by segregation of the alloying elements during solidification
|| || || || || || ||




-causes anisotropy in the tensile ductility and impact energy of the
|| || || || || || || || || || ||



steels


Why are eutectic material and severe banding undesirable? -
|| || || || || || || || ||



CORRECT ANSWER✔✔-Makes the tool steel crack easier
|| || || || || ||




Hardening Characteristics (4) - CORRECT ANSWER✔✔-Safety in
|| || || || || || ||



Hardening
Depth of Hardening || ||




Size change in hardening
|| || ||




Resistance to decarburization || ||




what is secondary hardening? - CORRECT ANSWER✔✔-the
|| || || || || || ||



unintentional increase of hardness during tempering or machining of
|| || || || || || || ||



some hardened high alloy steel
|| || || || ||