Click image to enlarge

Tool wear observations according to Moshe Goldberg, manager of marketing, training and engineering support for Iscar Ltd., Tefen, Israel.

High stresses, High friction, High temp (1000°C) = tool damage

Adhesion wear:

Fragments of the workpiece get welded to the tool surface at high    temperatures; eventually, they break off, tearing small parts of the tool with them.

Abrasion:

Hard particles, microscopic variations on the bottom surface of the chips

rub against the tool surface

Diffusion wear:

At high temperatures, atoms from tool  diffuse across to the chip;

the rate of diffusion increases exponentially with temperature;

this reduces the fracture strength of the crystals.

Read the tool wear story.

 

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