1. Identify the workpiece material
Coated CBN inserts are intended for selected hardened steel, cast iron and powder metallurgy applications. Typical hardened materials include bearing steel, die steel and tool steel.
Choosing the right coated CBN insert for high-speed finishing requires a clear understanding of the workpiece material, cutting continuity, machining speed and surface-quality requirements. UHD coated CBN inserts combine a CBN substrate with multilayer PVD coatings to support stable finishing of selected hardened steels, cast irons and powder metallurgy materials.
Quick suitability guide: UHD coated CBN inserts are designed for high-speed continuous or light interrupted finishing. They are suitable for applications requiring stable dimensions, good surface quality and consistent batch production when cutting conditions are properly controlled.
A coated CBN insert is manufactured by depositing multilayer wear-resistant coatings, such as TiAlN, TiN and TiCN, onto a CBN substrate through PVD technology. This structure is intended to balance the hardness and toughness of the CBN base with improved surface wear resistance.
In suitable machining conditions, the coating can help reduce cutting friction, control crater wear and oxidation wear, and improve stability during demanding finishing operations. The result is a cutting tool solution for manufacturers seeking longer tool life, consistent machining quality and efficient production of hardened or difficult-to-machine components.
Coated CBN inserts are intended for selected hardened steel, cast iron and powder metallurgy applications. Typical hardened materials include bearing steel, die steel and tool steel.
The correct grade depends on whether the operation is continuous, weakly interrupted, moderately interrupted or severely interrupted. Cutting impact should be assessed before selecting the insert.
For high-speed finishing, priority is normally given to wear resistance, dimensional stability and surface quality. Insert geometry, cutting parameters and machine stability should be considered together.
UHD coated CBN inserts can support dry or wet machining under suitable conditions. A stable CNC machine, secure workholding and controlled cutting parameters are important for reliable results.
The following grade selection is based on the listed material and cutting-condition characteristics. Final selection should be verified against the actual workpiece, machine and cutting parameters.
| Grade | Key characteristic | Suitable condition | Workpiece materials | Typical industries |
|---|---|---|---|---|
| UPN201 | Excellent wear and impact resistance | High-speed continuous or interrupted cutting | Alloy cast iron, grey cast iron, ductile iron | Automotive, air-conditioning compressors, bearings, gears and crankshafts |
| UPN202 | Excellent wear and heat resistance | High-speed continuous cutting | Alloy cast iron, grey cast iron, ductile iron | Automotive and construction machinery |
| UPN603 | Excellent impact resistance with good wear resistance at low speed | Heavy interrupted turning or milling | Nickel-cobalt-based superalloys and cemented carbide | Automotive components, nickel-cobalt-based superalloys and cemented carbide processing |
| UPN601 | Excellent wear resistance | High-speed continuous cutting | Hardened bearing steel, die steel and tool steel | Wind power, gears, bearings and automotive components |
| UPN602 / UPN605 | Excellent wear resistance | High-speed continuous to lightly interrupted cutting | Hardened bearing steel, die steel and tool steel | Wind power, gears, bearings and automotive components |
| UPN608S | Excellent wear resistance | High-speed continuous to moderately interrupted cutting | Hardened bearing steel, die steel and tool steel | Wind power, gears, bearings and automotive components |
| UPN606 | Excellent wear resistance | High-speed continuous to severely interrupted cutting | Hardened bearing steel, die steel and tool steel | Wind power, gears, bearings and automotive components |
Henan UHD Ultrahard Tools Co., Ltd. is an integrated manufacturing and trading company specializing in superhard cutting tools. With in-house CBN and diamond material development, digital production systems and precision inspection capabilities, UHD supplies coated CBN inserts for customers in automotive, wind power, aerospace, machinery manufacturing, bearings, gears and other advanced manufacturing sectors.
In addition to standard grades and specifications, UHD provides non-standard customization and cutting-parameter optimization guidance based on the customer’s workpiece material, machine condition and machining process. This helps industrial users evaluate whether a coated CBN insert is appropriate for high-speed finishing and select a solution consistent with their production requirements.
Tell us your workpiece, quantity, and tooling requirement. Our team will reply with a practical solution.
