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Thermal spelling: The breaking or cracking or peeling off the refractory is known as spelling. A good refractory must show a good resistance to thermal spelling. Thermal spelling can be decreased by minimizing the development of internal stress by:
(1) Using refractory with high porosity, good thermal conductivity and low coefficient of expansion.
(2) Avoiding sudden temperature changes.
(3) Proper furnace design
What are the objectives of heat treatment of metals? Objectives of heat treatment- Cause relief of internal stresses developed while cold working, welding, casting, forgi
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REQUIREMENTS Workbook cum Lab. manual Block 1 (LT-1 course) Pencil Pen Eraser Scale Coloured pens
A pair of one cation and one anion missing in a crystal of the type AB is known as Schottky defect.
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An operator tells you that it takes 2 minutes for a process to get half way to the final value after a step change in the input. What can you infer about the process time constant
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