Question

There are many types of heat treating processes available to steel. The most common are ____________ quenching, and tempering.

(a) dealing

(b) healing

(c) annealing

(d) milling

This question was posed to me during a job interview.

My enquiry is from Steel and Iron Work in chapter Rules and Methods of Measurement of Civil Engineering Drawing

Answer 1

The correct option is (c) annealing

Explanation: Annealing is the process of heating the steel to a sufficiently high temperature to relieve local internal stresses. It does not create a general softening of the product but only locally relieves strains and stresses locked up within the material. Annealing goes through three phases: recovery, recrystallization, and grain growth. The temperature required to anneal a particular steel depends on the type of annealing to be achieved and the alloying constituents.