Abstract
In order to clarify the tool wear of (Ti, B)N coated carbides in the cutting of melted material (SCr420H) or sintered steel, the wear progress of (Ti, B)N coated carbides tool is investigated experimentally. The base metal of the coated carbides tool is cemented carbides. The main results obtained are as follows: (1) Both the micro-hardness and the critical scratch load of (Ti, B)N coated carbides tool are higher than those of TiN coated carbides tool. (2) In the cutting of SCr420H, the wear progress of (Ti, B)N coated carbides tool is slower than that of TiN coated carbides tool. (3) In the cutting of sintered steel, the tool wear of (Ti, B)N coated carbides tool is about equal to that of TiN coated carbides tool. However, in the high speed cutting of sintered steel, the wear progress of (Ti, B)N coated carbides tool is faster than that of (Ti, B)N coated carbides tool. It is found that the (Ti, B)N can be used as a coating material of cutting tool.
