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Q. What is the procedure of hot working?
A process is defined as hot working if it takes place when the workpiece is above the recrystallization temperature.
Hot Working Advantages
• Hardness and ductility of metal is not changed.
• Porosity is eliminated.
• Structure is improved by reforming smaller crystals.
• Large shape changes are possible without ruptures.
• Smaller, faster acting machines.
• Impurities are broken up and distributed throughout material.
• Surfaces need not be clean and scale free.
Q. Explain the procedure of Rockwell hardness tests? Rockwell hardness tests per ASTM of the deposited weld, and heat affected zone shall be required for procedure qualificatio
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