Carbided PCBN (Polycrystalline Cubic Boron Nitride)

Description

Product Overview

SINO SEIKO（Sino Qtech Industries Co., Ltd.） manufactures Carbided PCBN inserts — combining a thin layer of polycrystalline cubic boron nitride brazed onto a tough tungsten carbide substrate. This hybrid construction delivers the best of both worlds: the extreme hardness and wear resistance of PCBN on the cutting face, backed by the shock-absorbing toughness of carbide. Based in Zhengzhou, Henan, we operate advanced testing laboratories to ensure every insert meets rigorous quality standards.

Working Principle

Carbided PCBN is produced by HPHT-sintering a thin PCBN layer (0.5–1.0mm) directly onto a pre-formed tungsten carbide insert body. The metallurgical bond between PCBN and carbide is achieved through controlled diffusion of the binder phase. During machining, the PCBN layer provides the cutting hardness needed for ferrous materials, while the carbide substrate absorbs cutting vibrations and prevents catastrophic tool failure.

Key Advantages

Applications

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Sinoseiko located in Zhengzhou——The biggest diamond industrial area in the world. Cooperated with outstanding manufactures and the most advanced Carbided PCBN performance test lab in China. This enables Sinoseiko to provide our customers with practical solutions for their Carbided PCBN needs.  Sinoseik PCBN is characteristic of high hardness, high wear resistance and high thermal stability and is made by sintering micron CBN powder and various ceramic binders at a high temperature and pressure. CB series is composed of CBN layer and tungsten carbide base. Application Sinoseik PCBN is ideal for tools used for the machining of high hardness and hard processed ferrous materials (HRC45-65), such as harden steel, pearlitic gray cast iron, high temperature alloy, high-speed steel, hard facing alloys, Ni-Cr alloy, powder metallurgy metals. PCBN is typically used to machine brake discs, engine blocks, engine cylinder liners, brake drums, flywheels, valve seats and guides, gears, mold and die parts, etc. Advantage 1. Multiple grades of PCBN blanks and wide range of application 2. High cost-effective, Easy Processing, Excellent performance, High wear resistance, strong stability 3. Largest diameter (50 mm) of PCBN which is made in China 4. Strong technical support, Customized R&D PCBN and service 5. Strict quality management system to guarantee the consistent quality 6. Short lead time: 1-2 days for 50 mm PCBN Disc. 3-4 days for 10000 PCBN tips

Carbide backed PCBN semi-finished inserts
Shape	ISO	Dimensions (mm)		Grade Available
		IC	Thickness(T)
Rounds	RNUN-0903XX	9.8	3.2	CB900,CB850,CB720,CB500
	RNUN-1203XX	13	3.2
	RNUN-1204XX	13	4.76
	RNUN-1904XX	19.4	4.76
Squares	SNUN-0603XX	6.7	3.2	CB900,CB850,CB720,CB500
	SNUN-0903XX	9.8	3.2
	SNUN-1203XX	13	3.2
	SNUN-1204XX	13	4.8
Triangles	TNUN-1103XX	6.7	3.2	CB900,CB850,CB720,CB500
	TNUN-1603XX	9.9	3.2
	TNUN-2204XX	13.2	4.8