Question

Which of the following stresses is takes place during performing the wire drawing operation?

(a) Tensile stress

(b) Bending stress

(c) Indirect compressive stress

(d) Shear stress

I had been asked this question in unit test.

Enquiry is from Classification of Metal Forming Processes topic in division Forming Process of Casting-Forming-Welding II

Answer 1

Correct answer is (c) Indirect compressive stress

The explanation is: Wire drawing is a forming process in which a round metallic bar is pulled by a machine by generating indirect compressive stresses in the bar. This causes thinning of bar and results in the formation of thin wires that further used as a cable or for electricity purposes. Wire drawing is most suitable for ductile materials.