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MTM0070 Materials engineering
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Calculate the punch force F (N) required to complete blanking. Circle with diameter of 18.5 mm must be cut out of the material with 5.1 mm in thickness and 104 MPa tensile strenght.
where L - the total length sheared, mm; s - thickness of material, mm; τ1 (tau1) - shear strength of material, MPa; Rm - tensile strength of material, MPa.
Relative error +/- 1% allowed. Circle circumference is L=pi()*d.
Which sheet forming operations were used in the manufacturing process of the product shown in the figure?
Using which type of heat treatment is it possible to eliminate the traces of work hardening in deformed metal?
Which sheet forming operations were used in the manufacturing process of the product shown in the figure?
How do metal properties (strength, ductility) change after cold-work hardening?
Which sheet forming operations were used in the manufacturing process of the product shown in the figure?
Due to hardening by cold working...
Find the force (F) needed for guillotine cutter to chop metal sheet. The thickness of material is 2 mm and tensile strength is 203 MPa. The angle between the blades of the cutter φ is 7 degrees.
where s - thickness of material, mm; Rm - tensile strength, MPa; τ1 (tau) - material's shear strength, MPa; φ (fi) - the angle between the blades of the cutter (usually 6-8 degrees).
Provide answer in Newtons.
Which of the following casting methods is best for single series production?
Would you prefer forging or casting for following automotive components, and why?