Halnn journal
Hard turning: How to choose between ceramic and CBN inserts? Ceramic inserts and CBN inserts are widely used in manufacturing industry globally. CBN and ceramics are two kinds of cutting tool materials, but in terms of inorganic non-metallic materials, CBN (full name: Cubic Boron Nitride) and alumina, silicon oxide and other traditional ceramic tool materials collectively referred to as ceramic materials. So, in some applications, both ceramic tools and CBN tools are suitable. As a pioneer brand of applying CBN and ceramic tools in heavy-duty machining and hard turning, Halnn Superhard has always believed that ceramic inserts and CBN inserts belong to a symbiotic relationship, not an antagonistic relationship. Both of them, respectively, play their respective advantages to assist the rapid development of the manufacturing industry.
In terms of ceramic inserts, the common brands on the market are Sweden's Sandvik, Germany's SPK, Japan's NTK, the U.S. Green Leaf, Japan's Kyocera, China's Halnn, among which whisker toughened ceramic inserts are mainly used in the field of high-temperature alloys, silicon nitride ceramics are used in the machining of hard materials and cast iron, alumina ceramics are used for hard turning. All above applications are overlapped with CBN.（see next page）