절삭공구의 마모유형

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절삭공구의 마모유형

목차

Brief history of cutting tools
Analyzing insert failure modes
Operating conditions
Flank wear
Flank wear land development
Cratering
Controlling cratering
<중 략>

본문내용

A = Break in period and measurable wear
B = Largest part of insert life and constant wear
C = Increasing rate of wear (wear land becomes larger and larger)
*
Controlling flank wear
- Reduce cutting speed
if normal flank wear caused by high cutting speed
- Increase cutting speed
if abnormal flank wear caused by low cutting speed
- Normally use a high speed oriented grade
- Apply coolant
*
Cratering
Cratering
-High heat and pressure in cut
-Chemical reaction causes
carbon loss
-Carbon becomes soft and
a crater develops
*
Controlling cratering
- Reduce cutting speed
- Normally use a high speed oriented grade
- Apply coolant
*
Deformation
Crater Wear

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