Turning Inserts – Negative (NST)
Nueve ranuras para virutas, desde el acabado SWX+ hasta el desbaste 909+, que abarcan acero, acero inoxidable y hierro fundido.
La gama NST de Galtona es el programa de torneado negativo más amplio, con nueve ranuras de viruta específicas para acabado y desbaste.
Para acero: SWX+ (Masterfinish, alta calidad superficial), WL+ (acabado ligero), WM+ —la gama más amplia, con 7 formas de plaquitas para GTCP115, GTCP125, GTCP125HP, GTCP135 y hierro fundido GTCK120— y WR+ para desbaste medio.
Para acero inoxidable y materiales exóticos: JF (acabado de cermet), EXK+ (acabado CNGP/DNGP/VNGP/WNGP), IPK+ (nuevo rompevirutas, bajas fuerzas de corte) y IPR+ (mecanizado medio y desbaste ligero).
Para el desbaste de hierro fundido: 909+, disponible en carburo recubierto GTCK120/GTCK110HP, incluyendo plaquitas de cabeza plana (sin rompevirutas) …-EN aptas para cortes interrumpidos.
WR+ — medium roughing
WR+ — Medium Roughing
Depth of cut 1.5–5.0 mm across P15/P25/P35 steel grades.
Example: CNMG 120408EN-WR+. Feed 0.50–0.30 mm.
P15 / P25 / P35
| Designation | Material No. | Available |
|---|---|---|
| CNMG 120408EN-WR+ GTCP115 | MM11983084 | ● |
| DNMG 150608EN-WR+ GTCP115 | MM12037321 | ● |
| DNMG 150612EN-WR+ GTCP115 | MM12048929 | ● |
| CNMG 120408EN-WR+ GTCP125 | MM11882916 | ● |
| CNMG 120412EN-WR+ GTCP125 | MM11882915 | ● |
| DNMG 150608EN-WR+ GTCP125 | MM12037320 | ● |
| DNMG 150612EN-WR+ GTCP125 | MM12049239 | ● |
| SNMG 120408EN-WR+ GTCP125 | MM11882913 | ● |
| SNMG 120412EN-WR+ GTCP125 | MM11882911 | ● |
| TNMG 160408EN-WR+ GTCP125 | MM11882909 | ● |
| TNMG 160412EN-WR+ GTCP125 | MM11882907 | ● |
| WNMG 080408EN-WR+ GTCP125 | MM11882906 | ● |
| WNMG 080412EN-WR+ GTCP125 | MM11882904 | ● |
| DNMG 150608EN-WR+ GTCP135 | MM12037319 | ● |
| DNMG 150612EN-WR+ GTCP135 | MM12049240 | ● |
Cutting data — general cutting parameters by workpiece material
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| Group | Type / alloy | Hardness HB | GTCP115 vc | GTCP125 vc | GTCP135 vc |
|---|---|---|---|---|---|
| P | Non-alloyed steel 0–0.45% C | 150–250 | 220–400 | 170–240 | 170–190 |
| P | Low-alloyed steel | 250–300 | 200–320 | 100–190 | 90–150 |
| P | High-alloyed steel | 200 | 180–320 | 130–210 | 120–200 |
| P | Corrosion-resistant steel | 200 | 200–320 | 130–210 | 140–180 |
| M | Ferritic stainless | 200 | 220–320 | 140–210 | 140–200 |
| M | Austenitic stainless | 180 | – | 100–210 | 110–190 |
| M | Duplex stainless | 230–260 | – | – | 80–150 |
| M | Martensitic stainless | 330 | – | 70–100 | 55–75 |
| K | Grey cast iron | 180 | 140–370 | 130–210 | – |
| K | Spheroidal cast iron | 160 | 190–430 | 120–240 | – |
| K | Malleable/tempered iron | 130 | 180–520 | 150–250 | – |