Question

In the metal cutting process, the high cutting speed and a large angle of the tool will result in the formation of
1. continuous chips
2. discontinuous chips
3. continuous chips with built up edge
4. chips of irregular shapes

Answer 1

Correct Answer - Option 1 : continuous chips

Explanation:

Continuous Chip (Without BUE):

• Ductile work materials
• High cutting speeds
• Small feeds and depths
• Sharp cutting edge
• Large rake angle
• Low tool-chip friction

​Continuous Chip (With BUE):

• Ductile materials
• Low-to-medium cutting speeds
• Large feed
• Small rake angle
• Tool-chip friction causes portions of a chip to adhere to rake face
• Built-up edge (BUE) forms, then break off, cyclically

Discontinuous Chip:

• Brittle work materials
• Low cutting speeds
• Large feed and depth of cut
• Small rake angle
• High tool-chip friction