A tap that makes a difference in cast iron machining

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8th December 2015

Source: Sandvik Coromant

A tap that makes a difference in cast iron machining

Sandvik Coromant has launched a new tap for use with cast iron. Designed to maximise machining productivity, CoroTap 100 – KM features the latest cutting edge technology and offers excellent results and process security.

With the aim of developing a tapping tool that will make a difference for all types of cast iron machining, Sandvik Coromant has increased the number of flutes to reduce the force on each cutting edge. The new flute shape helps to produce really thin and small chips, which makes CoroTap 100 - KM a perfect solution for solving chip issues in cast iron as well as in steel materials with hardness between 150 and 190 HB.

A back chamfer has been added to let the tap thread deeper, and use of a new grade offering improved hardness makes the tap more wear-resistant. Finally, thread and chamfer relief is optimised to reduce the contact between the tap and the workpiece material.

New grade provides excellent wear resistance

The new D210 grade is a combination of powder steel substrate with high hardness and titanium aluminium nitride with a multi-layer coating that has a very smooth surface. This combination gives excellent wear resistance in dry and wet machining, including minimum quantity lubrication.

When tested against a competitor product, CoroTap 100 - KM showed outstanding machining results, a secure process and a 70% longer tool life.

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