Which of the following is a heat treatment furnace ?
Correct answer: B. Annealing furnace
- A. Muffle furnace
- B. Annealing furnace
- C. Reheating furnace
- D. Rotary kiln
Explanation
An annealing furnace is specifically designed for heat treatment, in which controlled heating and cooling soften the material and relieve internal stresses. A rotary kiln and reheating furnace serve different primary purposes, while a muffle describes furnace construction rather than one particular treatment.
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