Page 440 - Carmex - Inch Catalog 2022

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Supercut Solid Carbide Mills

Tip #4: Coolant

• Coolant can dramatically affect the performance of cutting tools, and the cost of

your operation.

• Cutting fluids perform two basic functions:

1) To reduce heat generated during the cut

2) Lubricate the tool and reduce friction between the chip and the tool

• Water-based coolant (emulsion) is the best option.

• Coolant improves the surface finish and helps force chips out of the flutes.

General milling tips

• Less flutes = more chip space, allows a deeper cuts (bigger Ae), suitable for

roughing/semi-finishing, slotting.

• More flutes – stronger core, higher stability, less chip space, shallower cut must

be used, suitable for super finishing especially for titanium, nickel and super-

alloys.

• For best surface quality and tool life, run-out of the machine and the holder must

be reduced as close to zero, minimum overhang should be used.

• Climb vs. conventional milling – rule of thumb is “thick to thin” (chip thickness),

so most of the time climb milling would be the first choice.

B14-30