Seco Tools has introduced the -RR93 and -R3 geometries into its RCMx range of turning inserts, to manage metalworking chips and optimise tool-life. They combine new roughing and medium finishing chipbreakers with industry-leading Duratomic grade technology, and are designed for extreme applications such as turning railway wheels.
The -RR93 replaces the previous -RR94 geometry, and boosts tool life, improves productivity, increases product reliability, enlarges the chip-control working area and enhances the surface finish.
The -R3 replaces the previous -R2 geometry, and excels in medium finishing applications in steels, difficult stainless steels and super alloys. Its optimally positioned grooves control chips even when depths of cut run as small as 1.5mm, high feed rates range from 0.6 to 1.2mm/rev and cutting speeds reach 90 to 160 m/min. (Within these ranges, the correct choices depend on materials and machine conditions.)
Throughout the RCMx range of inserts, the RCMT20-R2 positive screw-clamped range additions significantly reduce machining vibration, producing smoother finishes ideal for the surface areas of railway wheel finishing and medium roughing applications of difficult materials. Dedicated insert edge treatments and retained functional toughness arrest comb cracks and increase edge security.
For improved mechanical and thermal properties enhancing performance, the Duratomic CVD aluminum-oxide coating process manipulates coating components at the atomic level, and its used-edge detection reduces cutting-edge waste.
The new -RR93 and -R3 geometries, as well as the Duratomic grades, have been tested in most common railway wheel materials, including R7, R8, R9, M1, Class B and Class C.
• -RR93: 9 inserts (RCMX20, RCMX25, RCMX32)
• -R3: 10 inserts (RCMX20, RCMX25, RCMX32, RCMT20)
• All inserts available in new Duratomic TP grades
• RCMX20-R3 available in grades TS2000 and TS2050
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