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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SNMG120408 Cemented Carbide Insert with S Chipbreaker for High Feed Machining
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 |
Turning, also known as "turning for grinding", refers to the turning of hardened steel as the final finishing process.In general, the rough processing of hardened steel workpiece is carried out before quenching, and after quenching grinding finishing.With the development of high-hard tool materials and related technologies, PCBN tools, ceramic tools or new types of cemented carbide tools can be used to turn hardened steel in the lathe or turning processing center, and the processing quality can also reach the level of fine grinding.
Compared with CBN and ceramic materials, new cemented carbide and coated carbide tool materials have higher bending strength and impact toughness and lower price, which can be used to process hardened steel workpieces with hrc40-50 hardness.The choice of the shape of the blade and the geometrical parameters is very important to give full play to the cutting performance of the cutter.For blades of various materials, the shape of blades with high strength and good heat dissipation condition should be selected, as well as the radius of tip arc as large as possible.The main feature of the tool geometry is to select the larger negative front Angle or the pre-ground negative chamfer.
Describtion:
Turning inserts employ highly engineered composite structures, coatings, and geometry features to achieve great accuracy and high material removal rates. The benefits of using replaceable inserts for turning tools include: ·
1. Some inserts can be indexed to use other edges when one becomes worn ·
2. Inserts are quickly and easily replaced at the machine
Turning tool is the most widely used tool in metal cutting without signature.It can be machined on lathe outside circle, end plane, thread, internal hole, also can be used for cutting groove and cutting.On the structure, the tool can be divided into integral tool, welding assembly tool and mechanical clamping blade.Mechanical clamping blade's turning tool can be divided into machine tool turning tool and indexable turning tool.The cutting performance of mechanical clamping tool is stable, and workers do not have to grind it, so it is applied more and more in modern production.
Specification:
| Description | L | øI.C | S | ød | r | Grade |
| SNMG120404 | 12.7 | 12.7 | 4.76 | 5.16 | 0.4 | YBC251 |
| SNMG120408 | 12.7 | 12.7 | 4.76 | 5.16 | 0.8 | YBC251 |
| SNMG150608 | 15.875 | 15.875 | 6.35 | 6.35 | 0.8 | YBC251 |
| SNMG150612 | 15.875 | 15.875 | 6.35 | 6.35 | 1.2 | YBC251 |