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Materials And Processes

18 Questions  I  By Dr3wee
Materials and Processes

  
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1.  The reheating of a heat treated metal, such as with a welding torch
A.
B.
C.
2.  The core material of Alclad 2024-T4 is
A.
B.
C.
3.  Parts are rinsed thoroughly in hot water after they have been heat treated in a sodium and potassium nitrite bath to
A.
B.
C.
4.  What is generally used in the construction of aircraft engine firewalls?
A.
B.
C.
5.  The aluminum code number 1100 identifies what type of aluminum?
A.
B.
C.
6.  Alclad is a metal consisting of 
A.
B.
C.
7.  Which of the following occurs when a mechanical force is repeatedly applied to most metals at room temperature, such as rolling, hammering, or bending?
A.
B.
C.
8.  Why is steel tempered after being hardened?
A.
B.
C.
9.  Why is it considered good practice to normalize a part after welding?
A.
B.
C.
10.  What aluminum alloy designations indicate that the metal has recieved no hardening or tempering treatment?
A.
B.
C.
11.  Which material cannot be heat treated repeatedly without harmful effects?
A.
B.
C.
12.  Which heat-treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
A.
B.
C.
13.  The SAE and the American Iron and Steel Institute use a numerical index system to identify the compostion of various steels. In the number "4130", designating Chromium Molybdenum steel, the first digit indicates the
A.
B.
C.
14.  In the four-digit aluminum index system number 2024, the first digit indicates 
A.
B.
C.
15.  What is descriptive of the annealing process of steel during and after it has been annealed?
A.
B.
C.
16.  Which heat-treating process of metal produces a hard wear-resistant surface over a strong, tough core?
A.
B.
C.
17.  Normalizing is a process of heat treating
A.
B.
C.
18.  Which of the following descirbe the effects of annealing steel and aluminum alloys?
A.
B.
C.
D.
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