Q. High temperature tempering develops a ________ structure.

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Q. Temper embrittlement occurs at a temperature __________

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Q. Which tempering process is used to increase the endurance and elastic limit of the material?

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Q. What are the applications of medium temperature tempering?

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Q. Quenching of austenite steel for martempering is done using __________

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Q. How can temperature differences between center and surface be prevented?

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Q. Martempering process is usually employed in _________

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Q. Martempering is otherwise known as __________

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Q. Austempering forms a _________ structure.

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Q. It is necessary to carry out _________ after martempering.

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Q. Which of the following is not a disadvantage of austempering?

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Q. Why are bigger sections not used in austempering?

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Q. The treatment of steel to get a stronger casing while maintaining a soft core is called _________

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Q. Which of the following is not a diffusion method of surface heat treatment?

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Q. Steels containing ________ carbon are used for carburizing.

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Q. Which of the following is not a method of carburizing?

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Q. The energizer in pack carburizing makes up ________ of the total composition.

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Q. What kind of carbon-rich material is used in the carburizing mixture?

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Q. What is the carburizing temperature?

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Q. Which of the following holds true for pack carburizing?

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