Mechanical Metallurgy Practice Test 10

1. The production of the toothpaste tube is made by which of the following process?

2. The following diagram shows the steel plate bend along its edge plastically. The neutral axis (an axis with zero strain) will be indicated by which of the following _______ (where line 2 is in the centre of the sheet).

3. The drawn thin wire is heat-treated to produce fine pearlite grain structure so that optimum strength and ductility can be obtained. This process of heat treatment is known as __________

4. The Ugine-Sejournet process is associated with which of the following metal working process?

5. A roll of diameter 1.5 m is used to roll the sheet of width 100 mm. Find the stress on the machine, if the change in thickness of the sample is 10 mm. Given that the rolling pressure is 500 kN?

6. A steel sheet of thickness 25 mm is sheared with a knife, and the fracture length is 50 mm. Find the shear force required, if the tensile strength of steel is 250 MPa?

7. The temper rolling or skin pass rolling is used to ___________

8. There is no limit of the possible reduction in the thickness of the sheet metal, provided number of passes needs to increase.

9. The specific roll pressure is defined as _______________ in the rolling machine.

10. The force required for in direct extrusion is ____________ direct extrusion process.