Turning heat-resistant super-alloys

Posted on 26 Jun 2019 and read 655 times
Turning heat-resistant super-alloysWith the introduction of a range of new inserts to its T-Turn turning series of cutting tools, Wetherby-based TaeguTec UK Ltd (www.taegutec.com) says it has simplified the challenge of turning heat-resistant super-alloys (HRSAs).

Featuring a glossy yellow sheen, the new PVD-coated TT3010 grade is characterised by high abrasion-resistance, as well as high bonding strength to an ultra-fine substrate.

These attributes are said to provide a high level of resistance to chipping and to prevent built-up edge.

The new grade is particularly suitable for low-depth-of-cut finishing applications.

Meanwhile, the new PVD coated TT3020 grade, which also features an ultra-fine substrate that offers high abrasion-resistance and toughness, has a special coating designed to ensure a high level of resistance to built-up edge.

TaeguTec recommends this grade for machining HRSAs, ‘scaled surfaces’ and light external applications in the low- to medium-speed range.

Both new insert grades are available with two new chip-breakers.

The MGS chip-breaker is a negative press-type insert with a sharp cutting edge that reduces cutting resistance and heat generation during machining.

It also has a high rake angle that ensures smooth chip evacuation, while the wide top face provides optimum insert seating for stability during machining.

The FGS chip-breaker is a positive ground type with a sharp cutting edge that provides low cutting resistance while guaranteeing high precision.

It minimises the heat generated when machining high-temperature alloys, while a small protrusion improves chip control.

The new T-Turn inserts are available for a variety of tool-holders with insert designations that include CNMG, DNMG, SNMG, WNMG, RCMT and VBGT.

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