Q2: Determine the best quenching medium to produce a minimum hardness of HRC 40 at the center of a 3.75S cm diameter 4320 steel bar.
Q2: Determine the best quenching medium to produce a minimum hardness of HRC 40 at the center of a 3.75S cm diameter 4320 steel bar.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Transcribed Image Text:Q1: 1.5 in diameter steel part is quenched in oil with no agitation. (H=0.20).
If we use a 4340; 4140; 8640; 5140; 1040 steel, what would be the hardness
number at the center of the part?
Q2: Determine the best quenching medium to produce a minimum hardness
of HRC 40 at the center of a 3.75 cm diameter 4320 steel bar,
Given
re n
4340
50
8640
9310
Sie
4320
1050
10
20
10
20
30
Jominy distance (th of an inch)
TABLE Fhe N coeticiet ar severily af the quench, far several
omehing med
Cosling Ratethe Center
Medium
Coeicien
O ne gato
Otton
0 (re aghuion
Ho laghatord
Brire ne agtnoni
tre agn
025
10
10
20
DIAMETER IN)
HFACTOR
Rockwell Channess
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