Cuidados com as fresas de cerâmica - Informações técnicas / Fórmulas

PRECAUTION

Ceramic End Mills

Cutting Conditions

Requires High Cutting Speeds (From 350m/min to 1000m/min)

High speed cutting is required to generate the heat needed to soften materials without causing abrasion or other damage.
Cutting speeds from 350m/min to 1000m/min is recommended.

Recommendation for Air Blow

Do not use the coolant, it can cause thermal cracking.
Air blow is not used for the purpose of cooling and should not be directed at the tool. It should be used for good chip evacuation only.

Example of thermal cracking

Applications

Recommendations for Continuous Cuttting

Continuous cutting is highly recommended. Damage or chipping can occur during interrupted cutting.

Width of Cut is Recommended to Increase Gradually

Using maximum width and depth of cut from the start of machining may cause damage.
Increase the width of cut (ae) gradually to maintain tool life.

Method: Down Cut (Climb Milling)

Down cut / climb milling is highly recommended. Up cutting can be unstable.

Others

Tool Holder Recommendation - Hydraulic Chuck

First recommendation for tool holding is a hydraulic chuck, second recommendation is a precision milling chuck.
Collet chucks are not suitable.

Do not Remove The Built Up Edge

Do not remove any built up edge manually after machining as this may cause chipping.
The built up edge will be removed by the heat generated during the next cutting cycle.