Millwright RED SEAL Latest Questions
100% Correct Solutions
THE PRINCIPLE ALLOYING ELEMENTS CONTAINED IN STAINLESS STEEL ARE - ANSWER -
CHROMIUM AND NICKEL
THE AMOUNT OF CARBON IN A PLAIN CARBON STEEL DETERMINES THAT STEEL'S -
ANSWER .---HARDNESS
S. A. E. 1020 STEEL CONTAINS APPROXIMATELY - ANSWER .---.20% CARBON ( 0.18 -
0.23 )
BEFORE A CARBON STEEL IS CONSIDERED HARDENABLE BY HEATING AND QUENCHING
ALONE, IT SHOULD CONTAIN A MINIMUM OF - ANSWER .---0.35% CARBON
10. WHAT IS MEANT BY ANNEALING - ANSWER .---HEATING STEEL TO ABOVE
ITS CRITICAL RANGE AND THEN ALLOWING IT TO COOL SLOWLY.
WHAT IS THE OPERATION CALLED TEEMING - ANSWER .---POURING MOLTON
METAL FROM ALADLE INTO INGOT MOLDS
, WHICH IS NOT A FERROUS METAL - COPPER, CAST IRON, STEEL OR WROUGHT IRON -
ANSWER COPPER
PHYSICAL PROPERTIES OF FERROUS METAL ARE - ANSWER .---1. TOUGHNESS,
HARDNESS AND BRITTLENESS, 2. DUCTIBILITY AND ELASTICITY, 3. TENSILE
STRENGTH AND MALLEABLITY
WHICH OF THE FOLLOWING FERROUS METALS IS SO BRITTLE THAT IT CAN BE
EASILY BROKEN - ANSWER CAST IRON
WHAT IS HIGH CARBON STEEL - ANSWER .---STEEL CONTAINING 0.60% MORE OF
CARBON
DEFINE INDUCTION HEATING - ANSWER A METHOD OF HEATING METAL BY MEANS
OF AN INDUCTION COIL
17. DEFINE NORMALIZING STEEL - ANSWER THE HEATING OF STEEL TO APPROX. 100(F
ABOVE ITS CRITICAL TEMPERATURE, THEN
COOLING IT IN AIR
WHY IS LIMESTONE USED IN A BLAST FDURNACE - ANSWER TO PROVIDE A FLUX
DEFINE TEMPERING OF METAL - ANSWER .---A PROCESS THAT REDUCES THE
AMOUNT OF HARDNESS IN METAL BY REHEATING THE
METAL BELOW THE CRITICAL TEMPERATURE.
DEFINE "KILLED" STEEL - ANSWER .---STEEL FROM WHICH GAS HAS BEEN REMOVED
IN THE LADLE BY THE ADDITION OF
DEOXIDIZERS
100% Correct Solutions
THE PRINCIPLE ALLOYING ELEMENTS CONTAINED IN STAINLESS STEEL ARE - ANSWER -
CHROMIUM AND NICKEL
THE AMOUNT OF CARBON IN A PLAIN CARBON STEEL DETERMINES THAT STEEL'S -
ANSWER .---HARDNESS
S. A. E. 1020 STEEL CONTAINS APPROXIMATELY - ANSWER .---.20% CARBON ( 0.18 -
0.23 )
BEFORE A CARBON STEEL IS CONSIDERED HARDENABLE BY HEATING AND QUENCHING
ALONE, IT SHOULD CONTAIN A MINIMUM OF - ANSWER .---0.35% CARBON
10. WHAT IS MEANT BY ANNEALING - ANSWER .---HEATING STEEL TO ABOVE
ITS CRITICAL RANGE AND THEN ALLOWING IT TO COOL SLOWLY.
WHAT IS THE OPERATION CALLED TEEMING - ANSWER .---POURING MOLTON
METAL FROM ALADLE INTO INGOT MOLDS
, WHICH IS NOT A FERROUS METAL - COPPER, CAST IRON, STEEL OR WROUGHT IRON -
ANSWER COPPER
PHYSICAL PROPERTIES OF FERROUS METAL ARE - ANSWER .---1. TOUGHNESS,
HARDNESS AND BRITTLENESS, 2. DUCTIBILITY AND ELASTICITY, 3. TENSILE
STRENGTH AND MALLEABLITY
WHICH OF THE FOLLOWING FERROUS METALS IS SO BRITTLE THAT IT CAN BE
EASILY BROKEN - ANSWER CAST IRON
WHAT IS HIGH CARBON STEEL - ANSWER .---STEEL CONTAINING 0.60% MORE OF
CARBON
DEFINE INDUCTION HEATING - ANSWER A METHOD OF HEATING METAL BY MEANS
OF AN INDUCTION COIL
17. DEFINE NORMALIZING STEEL - ANSWER THE HEATING OF STEEL TO APPROX. 100(F
ABOVE ITS CRITICAL TEMPERATURE, THEN
COOLING IT IN AIR
WHY IS LIMESTONE USED IN A BLAST FDURNACE - ANSWER TO PROVIDE A FLUX
DEFINE TEMPERING OF METAL - ANSWER .---A PROCESS THAT REDUCES THE
AMOUNT OF HARDNESS IN METAL BY REHEATING THE
METAL BELOW THE CRITICAL TEMPERATURE.
DEFINE "KILLED" STEEL - ANSWER .---STEEL FROM WHICH GAS HAS BEEN REMOVED
IN THE LADLE BY THE ADDITION OF
DEOXIDIZERS
