Fu Nike successfully launched a new brazed PCBN blade

Abstract Fu Nike's latest brazed PCBN inserts do not open and crack due to CBN's latest brazing technology. Due to the thicker CBN polycrystalline crystal, it has higher impact resistance than the existing brazing inserts on the market, and the special process brazing makes the inserts have higher heat resistance...

Fu Nike's latest brazed PCBN inserts will not open and crack due to CBN's latest brazing technology. Due to the thicker CBN polycrystalline crystal, it has higher impact resistance than the existing brazing inserts on the market, and the special process brazing makes the inserts have higher heat resistance. According to Zhang Taihe, chief engineer of Fu Nike, the mechanical and thermal properties of cubic boron nitride are affected by the type and content of binder. Commonly used binders are cobalt, nickel, titanium carbide, titanium nitride, aluminum oxide, etc. The particle size of CBN and the type of binder affect its cutting performance. PCBN tools with low CBN content (50% to 65%) are mainly used for finishing steel (HRC45~65), while PCBN tools with high CBN content (80%~95%) are used for high speed roughing and semi-finishing nickel chrome. Cast iron, intermittent processing of hardened steel, sintered metal, hard alloy, heavy alloy, etc. The binder-free CBN is under development, and the CBN particles are made finer by controlling the synthesis conditions. The fine particle CBN has high thermal conductivity, extremely high thermal stability, high hardness and high strength even at high temperatures. Zhang Taihe believes that binderless CBN is expected to be the next generation of tool materials.

Prior to the latest brazing inserts developed by Fenike, the brazing inserts were coated with a layer of cubic boron nitride on the cemented carbide. This combination of physical and chemical means that the shrinkage ratio between the two layers is much different. Easy to delamination cracking. In the past, it was welded with silver, and it was not resistant to high temperatures. Generally, the maximum temperature was sixty-seven. Other brazing blades have been welded with one tip or two tips and up to four tips. The latest development of brazing technology developed by Fenike can weld 8 tips and can be welded on both the upper and lower sides. The difficulty is like welding stones and metal together. It takes more than two years for Fu Nike engineers to study success. Fu Nike's newly developed brazing technology can withstand temperatures up to 900 degrees. Fu Nike's newly developed brazing technology has been called “a new era of Chinese brazing tools” by several experts of the China Tool Association. Fu Nike has applied for national patents for this welding technology.

CBN tool

In the past, cubic boron nitride inserts were considered to be used only for high-speed cutting and only for hard workpieces. They are only suitable for finishing and super finishing, and are generally only used for light load and stable machining. The latest brazing inserts developed by Fenike have excellent impact resistance and can achieve large cutting depths. They can be used for high speed cutting (200~2000m/min) or medium speed and low speed cutting (5~60m). /min), can be continuous or intermittent, can process difficult hard materials, can also process soft materials with low hardness, not only suitable for light load stable cutting, but also for heavy duty interrupted cutting . Fu Nike's new brazing technology is changing the understanding of cubic boron nitride.

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Min. Illumination:
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