Answered Sep 01, 2022
Answer: Option 3
Answer: Option 4 For machining a cast iron workpiece by a high speed steel tool, the average cutting speed is 22 m/min and for a mild steel is 30 m/min
Answer: Option 1
Answer: Option 2
Answer: Option 4
Answer: Option 3 The welding process used in joining mild steel shanks to high speed drills is Flash butt welding
Answer: Option 4 High carbon steel carries carbon percentage of 0.8 to 1.5%
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