A cylindrical rod of copper having an initial diameter of 16 mm is to be cold worked by drawing such that the cross-sectional area is reduced. It is required to have a cold-worked yield stress of at...
- A cylindrical rod of copper having an initial diameter of 16 mm is to be cold worked by drawing such that the cross-sectional area is reduced. It is required to have a cold-worked yield stress of at least 200 MPa and a ductility in excess of 12%; in addition, the final diameter of 11.3 mm is required. Describe the manner in which this procedure may carried out by answering:
- (10p) Write the yield strength and ductility before cold work.
- (15p) Calculate the cold work and the yield strength and ductility if the process is done in one step and compare with the properties required.
- (20p) If the process has to be done in two step, explain how to estimate the needed cold work for the second step process then, calculate the intermediate diameter in (mm), explain the heat treatment and obtain the final ductility and yield strength.
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A cylindrical rod of copper having an initial diameter of 16 mm is to be cold worked by drawing such that the cross-sectional area is reduced. It is required to have a cold-worked yield stress of at...
A cylindrical rod of 1040 steel having originally 11.4 mm in diameter is cold-worked by drawing...
A cylindrical rod of 1040 steel having originally 11.4 mm in diameter is cold-worked by drawing (i.e. pulling through a die with a hole smaller than the original rod cross section). The circular cross section will be maintained during deformation. The deformed steel is desired to have tensile strength in excess of 825 MPa and ductility of at least 12% EL. The final diameter must be 8.9 mm. Explain how this may be accomplished.
Dura Total: 75 points initial diameter of 25.1 mm is to be cold worked by drawing...
Dura Total: 75 points initial diameter of 25.1 mm is to be cold worked by drawing in order to reduce the (Crigh cctional area such that the final diameter is 22.5mm. Figures 7.19a left) and 7.1e In. Deformation -cold working: A non-cold-worked 1040 steel cylindrical bu 7.19c (right) from the text are provided. 040 60 10 1040 ste Coopar Percent cold work a. Determine the ductility (%EL) and yield strength of the steel rodaner a single drawing process reducing the...
Problem 1 (10 pts) It is required to manufacture a 2.5 mm diameter copper rod from...
Problem 1 (10 pts) It is required to manufacture a 2.5 mm diameter copper rod from larger diameter stock by drawing. The rod should have a tensile strength of 300 MPa or more, a yield strength of 200 MPa or more, and ductility of 10% or more. Determine (a) the range of%CW which will allow achieving those properties, and (b) within this range clearly pick a certain%CW and determine the corresponding diameter of the starting stock. yield strength (MPa) tensile...
A cylindrical car component with 7 mm diameter is to be manufactured. The component is required...
A cylindrical car component with 7 mm diameter is to be manufactured. The component is required to possess a yield strength of at least 700 MPa and an elongation to fracture of at least 11%. For this purpose, you use a cylindrical steel 1040 rod with an initial diameter of 9 mm. The percent cold work cannot exceed 40% during any single cold deformation step in order to avoid cracking. Using the diagram below, describe your manufacturing procedure for this...
Problem #1 A cylindrical rod of copper (E 110 GPa) having a yield strength of 240...
Problem #1 A cylindrical rod of copper (E 110 GPa) having a yield strength of 240 MPa is to be subjected to a load of 6660 N. If the length of the rod is 380 mm, what must the diameter be to allow an elongation of 0.50 mm? A cylindrical specimen of some alloy 8 mm in diameter is stressed elastically in tension. A force of 15,700 N produces a reduction in the specimen diameter of 5 10-3 mm. Compute...
The cylindrical copper pressure tank (shown in cross section) will be produced by deep drawing. Tensile test data of the...
The cylindrical copper pressure tank (shown in cross section)
will be produced by deep drawing.
Tensile test data of the cold rolled sheet that will be used for
the blanks provided the following
true width and thickness strains relative to the rolling
direction
a) Assuming no change in volume or thickness from the initial
blank to final product,
calculate the initial blank diameter.
b) What is the limiting draw ratio (LDR) for this material?
c) Assuming 80% of the maximum...
Dura Total: 75 points initial diameter of 25.1 mm is to be cold worked by drawing in order to reduce the (Crigh cctional area such that the final diameter is 22.5mm. Figures 7.19a left) and 7.1e In. Deformation -cold working: A non-cold-worked 1040 steel cylindrical bu 7.19c (right) from the text are provided. 040 60 10 1040 ste Coopar Percent cold work a. Determine the ductility (%EL) and yield strength of the steel rodaner a single drawing process reducing the...
Problem 1 (10 pts) It is required to manufacture a 2.5 mm diameter copper rod from larger diameter stock by drawing. The rod should have a tensile strength of 300 MPa or more, a yield strength of 200 MPa or more, and ductility of 10% or more. Determine (a) the range of%CW which will allow achieving those properties, and (b) within this range clearly pick a certain%CW and determine the corresponding diameter of the starting stock. yield strength (MPa) tensile...
A cylindrical car component with 7 mm diameter is to be manufactured. The component is required to possess a yield strength of at least 700 MPa and an elongation to fracture of at least 11%. For this purpose, you use a cylindrical steel 1040 rod with an initial diameter of 9 mm. The percent cold work cannot exceed 40% during any single cold deformation step in order to avoid cracking. Using the diagram below, describe your manufacturing procedure for this...
Problem #1 A cylindrical rod of copper (E 110 GPa) having a yield strength of 240 MPa is to be subjected to a load of 6660 N. If the length of the rod is 380 mm, what must the diameter be to allow an elongation of 0.50 mm? A cylindrical specimen of some alloy 8 mm in diameter is stressed elastically in tension. A force of 15,700 N produces a reduction in the specimen diameter of 5 10-3 mm. Compute...
The cylindrical copper pressure tank (shown in cross section)
will be produced by deep drawing.
Tensile test data of the cold rolled sheet that will be used for
the blanks provided the following
true width and thickness strains relative to the rolling
direction
a) Assuming no change in volume or thickness from the initial
blank to final product,
calculate the initial blank diameter.
b) What is the limiting draw ratio (LDR) for this material?
c) Assuming 80% of the maximum...
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