Achteck - obecný katalog

Technical Information

Turning Insert Common Failure Mode & Solutions

Failtures

Picture

Analysis

Solution

● Tool material is too soft ● Excessive cutting speed ● Too small clearance angle

● Choose high wear-resistant insert grade ● Reduce cutting speed ● Enlarge clearance angle ● Increase feed rate ● Choose high wear-resistant insert grade ● Reduce cutting speed ● Reduce feed rate ● Increase the flow of coolant

Flank wear

● Too low feed rate ● Insufficient cooling

● Tool material is too soft ● Excessive cutting speed ● Excessive feed rate

Crater wear

● Choose tougher grade ● Enhance cutting edge strength

● Tool material is too hard ● Too low cutting edge strength

Chipping

● Choose high wear-resistant insert grade ● Reduce cutting speed ● Reduce cutting depth & feed rate ● Choose good thermal conductivity grade ● Increase the flow of coolant ● Increase cutting speed ● Choose sharp geometry ● Choose less adhesion grade ● Increase the flow of coolant ● Choose tougher grade ● Choose a smaller approach angle ● Choose bigger corner radius ● Change to high rigidity holder

● Tool material is too soft ● Too fast cutting speed ● Excessive cutting depth & feed rate ● Insufficient cooling

Plastic deformation

● Too low cutting speed ● Cutting edge not sharp ● Unsuitable grade ● Insufficient cooling

Built-up edge

● Excessive feed rate and cutting depth ● Vibration

Mechanical wear

● Choose dry cutting or adequate cooling ● Choose tougher grade

● Excessive cutting heat change on edge

Thermal cracking

● Excessive feed rate & cutting speed ● Tool material is too soft

● Choose high wear-resistane grade ● Select a small entering angle ● Reduce cutting speed

Notch wear

● Sticky chip on the cutting edge ● Chip evacuation failure

● Enlarge rake angle for a sharp edge ● Use chip breaker with bigger chip space

Coating peeling

462

Made with FlippingBook - Online Brochure Maker