Question

Which of the following products is most suitable to cast by low-pressure die casting method?

(a) Crank cases

(b) Blades of turbine

(c) Surgical instruments

(d) Connecting rods

I have been asked this question during an online interview.

The origin of the question is Low Pressure Die Casting in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer 1

Right choice is (a) Crank cases

The explanation is: Crank cases are very easy to cast by low-pressure die casting, as the upward flow of molten metal reaches to every small corner of the mould and makes the homogenous nature of castings. Many other components like magnetos, handle bar housing and other decorative items of automobile can also be casted by low-pressure die casting method.