Solid Carbide End mills for Machining Hardened Steels

Seco Tools, Inc. (Troy, MI) continues the success and growth of its high-feed milling (HFM) program by announcing the addition of the Jabro JHF180 MEGA-64 solid carbide endmill series for machining hardened steels (48 – 62 HRC). Particularly suited for mold & die applications, the JHF180 has shown tool life improvements of up to 400% over standard carbide end mills.

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Seco Tools, Inc. (Troy, MI) continues the success and growth of its high-feed milling (HFM) program by announcing the addition of the Jabro JHF180 MEGA-64 solid carbide endmill series for machining hardened steels (48 – 62 HRC). Particularly suited for mold & die applications, the JHF180 has shown tool life improvements of up to 400% over standard carbide end mills.

A unique feature of the JHF180 is a rigid 0.9° tapered neck design that reduces tool deflection, enables deep cavity milling, and improves surface finish. The unique flute cavity design and angle on the back of the tooth guide and eject the chips away from the cutting edge. It also features a highly wear-resistant MEGA-64 AlTiN coating with an 8% carbide substrate.

Seco’s high-feed milling strategy is based upon transferring the cutting forces from the radial direction to axial, which reduces the risk for vibrations and stabilizes machining. It relies upon small depths of cut combined with high table feeds, producing a thinner chip that carries the heat away from the cutting edge and reduces cutting forces. This approach reduces heat generation to extend tool life and provides a higher metal removal rate than normal; up to 200 to 300 percent faster than traditional milling.

The new JHF180 is available in diameters from 2mm to 16mm with reach options ranging from 2x to 7x diameter and comes with 3, 4 or 5 flutes depending upon the style. Seco recommends shrink fit, hydraulic or precision collet chucks as preferred clamping systems and the use of oil mist to optimize performance. This new endmill range is suitable for HFM applications including face milling, slotting, ramping, helical interpolation, ramping and Z-level machining.