Question

The die has longer life for casting of materials but less for aluminium alloys.

(a) True

(b) False

The question was asked in an interview.

Question is from Low Pressure Die Casting topic in section Special Casting Techniques of Casting-Forming-Welding I

Answer 1

The correct answer is (a) True

For explanation I would say: As the metallic die is used which has a long life, it is of the order of 300,000 pieces for zinc and similar alloys. But for the aluminium alloys, it is approximately up to the 150,000 pieces of it. The reason is higher melting temperature of aluminium alloys that can destroy the mould with the production of castings.