TURNING INSERTS

CBN turning inserts

CBN turning inserts, made from cubic boron nitride, are used for machining very hard materials such as heat-treated alloy steels with hardness above 45 HRC. These inserts typically have a hardness of 4000 to 4500 Vickers and thermal resistance up to 1200°C. Their structure usually consists of a thin CBN layer about 0.5 to 1 millimeter thick over a carbide substrate. The cutting angle ranges between 5 to 7 degrees, and the nose radius is typically between 0.2 to 0.8 millimeters. Precise design enables maintaining high material removal rates at high speeds while minimizing tool wear.

CBN inserts perform optimally at cutting speeds above 200 meters per minute and are suitable for dry machining. They are used for precision tolerances of 0.01 millimeters in parts such as crankshafts, shafts, and bearings. Protective coatings like TiAlN or TiSiN improve chemical and wear resistance in some models. The tool life of CBN inserts can be up to five times longer than carbide inserts depending on process conditions. Common geometries include CNGA, DNGA, and SNGA, optimized for medium to heavy-duty applications. These tools maintain stable operation temperatures without coolant up to 1000°C.

Turning inserts

Turning inserts are a key component in metal machining processes, playing a crucial role in cutting accuracy and quality. Standard dimensions typically include cutting edge lengths between 6 to 25 millimeters and thicknesses from 2 to 5 millimeters. The insert material is commonly tungsten carbide, ceramic, or CBN, each designed for specific applications. Common coatings include TiN, TiAlN, and Al2O3, which increase wear and heat resistance up to over 1000 degrees Celsius. The cutting edge geometry is selected based on the machining type, such as precision or rough turning, and can have positive or negative rake angles.

The mechanical strength of the turning insert depends on its base material and coating, with hardness usually ranging between 1500 to 2200 Vickers. High-quality inserts can withstand shear forces up to 3000 Newtons and operating temperatures above 900 degrees Celsius. Tool life typically ranges from 30 to 120 minutes at cutting speeds of 100 to 300 meters per minute. Manufacturing precision within micron levels and dimensional tolerances below 0.01 millimeters enhances workpiece surface quality and reduces secondary costs.

Ceramic turning inserts

Ceramic turning inserts are made from alumina Al2O3 compounds with additives such as zirconia, exhibiting hardness between 1800 and 2200 HV. These inserts maintain stable performance at operating temperatures above 1000 degrees Celsius and show very high wear resistance. Standard insert dimensions typically range from 6 to 20 millimeters in length and width. The main cutting angle ranges from 0 to 15 degrees, with a clearance angle of approximately 7 degrees, designed to ensure smooth and high-quality cutting. Insert thickness usually varies between 3 to 6 millimeters, and their weight ranges from 3 to 10 grams.

Due to their high thermal resistance and hardness, these inserts are primarily used in machining hard metals and cast iron. The insert mounting system, with precision under 0.01 millimeters, guarantees high stability during the turning process. Special coatings like TiCN and Al2O3 enhance tool life and reduce friction. These features improve efficiency and lower tool replacement costs, playing a crucial role in manufacturing precise and durable components.

Turning inserts

Turning inserts are precisely shaped metal components used for cutting metals in lathe machines. Standard insert dimensions typically range from 6 to 25 millimeters in length and width. Inserts are made from tungsten carbide WC, ceramics, or synthetic diamond, capable of withstanding temperatures up to 900 degrees Celsius. Their hardness ranges between 1500 to 2200 HV, enhancing tool life and cutting accuracy. Geometric angles include a main cutting angle between 0 to 15 degrees and a clearance angle of 7 degrees, which improve surface finish quality.

Inserts are usually designed with multiple cutting edges to allow quick replacement and reuse. Thickness ranges from 2 to 6 millimeters, and weight typically varies between 2 to 15 grams. For securing the insert, clamping and screw systems with precision under 0.01 millimeters are used. Coatings like titanium nitride TiN or aluminum titanium nitride AlTiN increase wear resistance and reduce friction. These features improve efficiency and reduce tool replacement costs in turning operations.

CBC turning inserts

CBC Cubic Boron Carbide turning inserts are manufactured from superhard materials with a Vickers hardness between 3200 and 3500. This level of hardness is approximately twice that of tungsten carbide, making them ideal for machining superalloys, hardened steels over 55 HRC, and high-resistance cast irons. These inserts can withstand temperatures up to 1200°C and perform exceptionally well in dry cutting and high-speed operations. Their standard relief angles range from 7 to 11 degrees to maintain a balance between edge strength and smooth cutting action.

The typical thickness of CBC inserts ranges from 3.18 to 6.35 mm, and their nose radius varies between 0.4 and 1.2 mm. CBC inserts are usually uncoated, as their natural wear resistance and chemical stability eliminate the need for surface coatings. Common geometries like SNGA and CNGA are optimized for finishing hardened steels and minimizing machining vibrations, enhancing tool life and dimensional precision.