3. Demie the re A,RCnD w- 200 w-400 IN

5- Complete the sentence with the correct statement for rolling operation. In the the strip is rolled continuously, through a number of stands. a) Tandem rolling mill b) Four-high mills Two-high mill Cluster mill Three-high mill

2) A washer is going to be manufactured by cutting operation out of 2024ST aluminum alloy sheet that has a thickness of 2.5 mm. The outside diameter of the washer is 25.0 mm, and the inside diameter is 12.0 mm. Make a rough sketch, define the geometries to be used and determine a. The punch and die size for the blanking operation b. The punch and die size for the punching operation c. The force required performing the blanking and punching operation simultaneously. The aluminum has a tensile strength = 300 MPa.

Question # 4 A cup of height h=30 mm and diameter d = 50 mm is to be drawn from a steel sheet of 2 mm thickness. a) Calculate the blank diameter Db. b) The Drawing ratio (DR). c) The shearing force needed to cut this blank if the shear strength of the steel sheet is S=180 N/mm2