CBN inserts promotes the application and expansion of high hardness materials

Unlike common materials, high-hardness materials are difficult to process and have different processing properties. Due to the high hardness materials in the turning process, some problems often occur, such as the severe work hardening of high manganese steel during the machining process, serious casting defects during the rough turning of cast iron rolls, and many other factors that affect the selection of machining methods and tools. Careful analysis is required before machining, and planning is required from the selection of the machine tool to the cutting process.

The size and shape of high hardness materials are different, and the processing positions are different, resulting in different machine tools, fixtures, cutting tools and cutting parameters. As far as production efficiency is concerned, the tool is the key factor. At present, the tool commonly used for cutting high-hardness and difficult-to-machine materials is a cubic boron nitride blade, which is a machine-clamped indexable tool with a hardness of about HRC 98.5 and can withstand high temperatures of 1400°C. Dry cutting reduces environmental pollution.

When using CBN inserts to process high-hardness and difficult-to-machine materials, the roughing and finishing processes must be processed according to different parameters. Indexable CBN inserts have high processing efficiency and are currently the first choice for roughing high hardness. Ling super-hard non-metallic adhesive legislation CBN BN-K1 grade high-hardness cast iron roll for rough turning, the effect is several times that of ceramic cutters.

Halnn provides the relative suitable tools and solutions for difficult-to-process materials and high-efficiency processing purpose.

Insert Grade	Suited Materials	Machining Type	Typical Application	Insert Image
BN-K1	Chilled Cast Iron, Hi-Ni-Cr Cast Iron and High harness alloy cast iron	Roughing	Alloy Cast Iron, Slurry Pump, Wear resistant castings
BN-S10	High Speed Steel	Roughing	HSS Rolls
BN-S20	Hardened Steel, Heat and abrasive resistant steel, High manganese steel	Roughing, Semi-Finishing	HSS Rolls, Ball Screw, Wind Power Bearings
BN-S200	Hardened Steel, Superalloy	Finishing	Wind Power Bearings
BN-S300	Gray Cast Iron	Roughing, Finishing	Brake Disc, Cast Iron Engine,Gearbox, Cylinder Liner
BDN80	Ni-based alloy, Stellite Alloy, Superalloy	Roughing, Finishing	Aircraft turbine disk, Ni based alloy parts
BN-H11	Hardened Steel	Semi-Finishing, Finishing	Bearings, Gears, Gear Shaft, Hardened Mold
BN-H20	Hardened steel, other materials of difficult to machine	Semi-Finishing, Finishing	Hardened Steel Gears, Mold,ect
BN-K20	Gray Cast Iron	Semi-Finishing, Finishing	Brake Disc, Cast Iron Engine,Gearbox
BNK30	Gray cast iron, Iron based alloy	Semi-Finishing, Finishing	Brake Disc, Brake Drum, Cast Iron Engine, Gearbox
BN-H05	Hardened Steel	Finishing	Gears, Gear Shaft, Bearings
BN-H10	Hardened Steel, high strength cast iron	Finishing	Bearings, Gears, Gear Shaft, High hardness component
BN-H21	Hardened Steel	Finishing	Bearings, Gears, Gear Shaft, Mold,ect.
BN-K50	Powder Metallurgy	Finishing	Powder Metallurgy Valve seat
BN-K10	Gray Cast Iron, Powder Metallurgical	Finishing	Valve seat ring; Engine cylinder bore;  Powder Metallurgy parts
BN-H05 C25	Hardened Steel	Finishing	Bearings, Gears, Gear Shaft, Mold, ect
BN-H10 C25	Hardened Steel	Finishing	Bearings, Gears, Gear Shaft, High hardness components
BN-H21 C25	Hardened Steel	Finishing	Bearings, Gears, Gear Shaft, Mold, ect