立方氮化硼Polycrystalline Cubic Boron Nitride
立方氮化硼Polycrystalline Cubic Boron Nitride是立方氮化硼颗粒和一定比例的粘结剂，在高温高压下烧结而成，具有良好的韧性、高耐磨性和对铁族金属的化学稳定性，常使用于高速、超高速切削及乾式切削。
聚晶立方氮化硼的性能特点：
1.具有较高的硬度(次于钻石)、耐磨性和抗冲击性：
CBN微粉的显微硬度为HV8,000~HV9,000，其烧结体PCBN的硬度为HV3,000~HV5,000。
2.具有高的热稳定性：
1,200℃~1,500℃的温度下仍表现出良好的热稳定性
3.化学稳定性好(优于钻石)：
与铁族金属在1,200℃-1,300℃下与Fe、Ni、Co等不起化学反应，在酸中不受侵蚀，在硷中约300℃时才会被侵蚀。
4.导热性良好：
导热系数略低于钻石，但为硬质合金的20倍，且随著切削温度的提高，聚晶立方氮化硼的导热系数增大。
立方氮化硼适合加工各种难加工材料：各种硬度在HRC45~70以上的淬硬钢(碳工钢、合金钢、轴承钢、模具钢和高速钢等高硬度淬硬钢零件) 、耐磨铸铁钢类、各种喷涂(焊)材料、HRC35以上的高温合金、冷激铸铁，还可用于钛合金、纯镍、纯钨以及其他材料的加工，但不适合加工较软的黑色金属材料。
※刀具类型:
微小铣刀
刀片
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Polycrystalline Cubic Boron Nitride consists of CBN grain and specific ratio of adhesive. PCBN is sintered in high temperatures and high pressure.
The specialties of Polycrystalline Cubic Boron Nitride:
1.High hardness (inferior to diamond), abrasion resistance, crash resistance.
The micro-hardness of CBN grains is HV8, 000~HV9, 000; the hardness of PCBN is HV3, 000~HV5, 000.
2.High heat stability.
Polycrystalline Cubic Boron Nitride still shows the good heat stability in 1, 200°C~1, 500°C.
3.Good chemical stability (better than diamond)
Polycrystalline Cubic Boron Nitride will not have chemical reaction with Fe, Ni, and Co at 1, 200°C~1, 300°C, it is not eroded in acid solution and would be eroded in alkali solution at about 300℃.
4.Good heat conduction
The heat conduction of Polycrystalline Cubic Boron Nitride is lower than that of diamond. Its heat conduction is 20 times as hard alloy. In addition, the heat conduction of Polycrystalline Cubic Boron Nitride becomes higher with the increase of temperature.
Polycrystalline Cubic Boron Nitride does not react chemically with iron in ferrous material work pieces. The applications of Polycrystalline Cubic Boron Nitride are Ferrous Materials, Metal Alloys, Hardened steels (HRC 59~HRC62), Hard facing alloys (>HRC 35), Grey Cast Irons (200~280 HBN), Hot/cold worked tool steels (45 - 65 HRC), High speed steel (45 - 65 HRC), Alloyed steels, Titanium alloys, and etc. but not suitable for processing soft ferrous metal.
※Tool Types:
Micro Milling Tool
Insert
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