Millwright Level 2 Mechanics – Metalurgy Exams Prep
Guide
1. Most widely used Steel (Carbon Steels and cast irons)
Metal?
2. Rockwell Hard- the most widely used hardness test, and is similar to the Brinell test, with the hard-
ness Test ness value again being determined by an indentation or penetration produced by
a static load.
3. Brinell Hardness uses a hydraulic press to penetrate the metal.
Test
4. Tensile Testing Pull specimen apart till it breaks. It determines the failure of ductile materials in
tension or compression below the elastic limit.
5. How do you Iden- Weight, Shape ,Texture and Visual appearance
tify Metals?
6. Tempering 1.) Heat the steel carefully observe for color change
2.) Stop heating when the area you are treating reaches the necessary tempera-
ture.
3.) Quench the steel
7. Annealing is used to make a hardened workpiece soft again.
8. Hardening 1.) Steel is heated till it turns into austenite
2.) Steel must be quenched (cooled) to form martensite.
9. Coke is Coal baked at 1150 Celsius for 18 hours.
10. Taconites Iron % 25-30%
11. Brass is a yellowish color ,it produces no sparks. it is slightly lighter then copper and
resists water and corrosion.
1/4
Guide
1. Most widely used Steel (Carbon Steels and cast irons)
Metal?
2. Rockwell Hard- the most widely used hardness test, and is similar to the Brinell test, with the hard-
ness Test ness value again being determined by an indentation or penetration produced by
a static load.
3. Brinell Hardness uses a hydraulic press to penetrate the metal.
Test
4. Tensile Testing Pull specimen apart till it breaks. It determines the failure of ductile materials in
tension or compression below the elastic limit.
5. How do you Iden- Weight, Shape ,Texture and Visual appearance
tify Metals?
6. Tempering 1.) Heat the steel carefully observe for color change
2.) Stop heating when the area you are treating reaches the necessary tempera-
ture.
3.) Quench the steel
7. Annealing is used to make a hardened workpiece soft again.
8. Hardening 1.) Steel is heated till it turns into austenite
2.) Steel must be quenched (cooled) to form martensite.
9. Coke is Coal baked at 1150 Celsius for 18 hours.
10. Taconites Iron % 25-30%
11. Brass is a yellowish color ,it produces no sparks. it is slightly lighter then copper and
resists water and corrosion.
1/4
