Incorrect Tap Selection
- Use specially designed taps for tapping heat treated material.
- Change to a type of high-speed steel tap that contains vanadium.
- Apply special surface treatment such as steam oxide or TiN.
- Increase chamfer length.
Operating Conditions
- Reduce tapping speed.
- Apply proper cutting lubricants.
- Avoid work hardening.
- Use larger hole size.
Tool Conditions
- Grind proper cutting angle.
- Avoid hardness reduction from grinding process.
