Zhuzhou XinHua Cemented Carbide Co., Ltd.
Zhuzhou XinHua Cemented Carbide Co., Ltd. Carbide Cutting Inserts-Turning inserts, Milling inserts, Cermet inserts and Aluminium inserts.
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Metal Working Tools ONHU Octagonal Double-Sided Inserts With 16 Cutting Edges
Application:
| Material | Material Characteristics |
| Carbon Steel, Alloy Steel and Tool Steel 36-48 HRC: | • Higher carbon content • Higher chrome, nickel, and moly content • Tough material to machine • Abrasive • Difficult to break and control the chip flow • The material surface will harden when machined at high speed • Good surface finish |
| Ferritic, Martensitic, and PH Stainless Steel under 48 HRC | • Brittle • Stringy chips • High cutting force • The material will harden when machined at high speed. |
| Austenitic Stainless Steel: | • Becomes gummy under machining operations due to nickel content • Very difficult to machine in soft conditions • Very difficult to machine at a small depth of cut • Develops a tough string of chips that are difficult to control. Forms a build-up on the insert tip • Low thermal conductivity results in excess heat at the insert tip • Material surface will harden due to high chromium content |
| Ductile and Malleable Cast Iron | • Very difficult to machine • Small depth of cut • Spherical form graphite makes machining difficult • The carbide concentration creates hard spots • The material structure is not uniform • The crater wear and flank of the insert makes machining difficult • The insert tool life is less than gray cast iron |
| Gray Cast Iron | • Flake form of graphite makes machining easy • Contains scale, inclusions and sand in the surface • The material will break easily on the end of the cut • Tendency to chatter and vibrate on thin wall section • Chucking and rigidity of the workpiece is extremely important to minimize distortion, to achieve a good finish and close tolerance |
For Roughing:
use a tough coated insert grade with a large nose radius, heavy honed cutting edge and large chipbreaker. Cut at a low SFM with a large Depth of Cut (ap) and high Feed Rate per Rev. (fn)
For Universal, use a hard, tough & wear resistant coated insert grade with a medium nose radius, honed cutting edge and medium chipbreaker. Cut at a medium SFM with a medium Depth of Cut (ap) and medium Feed Rate per Rev. (fn)
For Finishing:
use a hard & wear resistant coated insert grade with a small nose radius, sharp to light honed cutting edge and small chipbreaker. Cut at a high SFM with a medium Depth of Cut (ap) and medium Feed Rate per Rev. (fn)
Optimum:
Insert Wear, decrease Spindle Speed (n) and/or increase Feed (fn) or change to a harder insert grade. Insert Chipping, increase Spindle Speed (n), decrease Feed (fn), and/or change to a heavier honed edge or change to a tougher insert grade.
Describtion:
| Insert Application Guide | ||
| Finishing | Universal | Roughing |
| Hard and Wear resistant | Wear Resistant and Tough | Tough and Impact Resistant |
| PVD and CVD Coating | PVD and CVD Coating | PVD and CVD Coating |
| Small Nose radius | Medium Nose Radius | Large Nose Radius |
| Light Honed Edge | Medium Honed Cutting Edge | Heavy Honed Cutting Edge |
| Small Chipbreaker | Medium Chipbreaker | Large Chip Breaker |
| Cutting Date | ||
| Finishing | Universal | Roughing |
| Small Depth of cut (ap) | Medium Depth of cut (ap) | Large Depth of cut (ap) |
| Small Feed per Revolution (f n) | Medium Feed per Revolution (f n) | High Feed per Revolution (f n) |
| High Surface Cutting Speed (Vc) | Medium Surface Cutting Speed (Vc) | Low Surface Cutting Speed (Vc) |
| Use Coolant if Insert Allows | Use Coolant if Insert Allows | Use Coolant if Insert Allows |
Specification:
