Question

Permanent mould casting is suited to low volume production of moderate or complex shapes of casting.

(a) True

(b) False

This question was posed to me in an interview for internship.

My doubt is from Permanent Mould Casting in chapter Special Casting Techniques of Casting-Forming-Welding I

Answer 1

The correct answer is:

(a) True

Explanation:

Permanent mould casting is indeed suited for low to medium volume production of moderate to complex shapes. This casting method uses metal molds (which are permanent) instead of expendable sand molds, allowing for repeated use. It provides a higher-quality surface finish and better dimensional accuracy compared to sand casting, which makes it ideal for producing parts in low to medium volumes.

However, permanent mould casting typically works well with metals that have relatively low melting points (such as aluminum, copper alloys, or zinc), and the molds are designed to withstand multiple casting cycles.

Therefore, (a) True is the correct answer.