STEEL GCr15 CUT BY PCBN CUTTER*

Liu Xianli  Chen Bo  Meng An  Chen Liguo  Li Zhenjia
Dept. of Mechanical Engineering, Harbin University of Science and Technology
Yuan Zhejun

Harbin Institute of Technology

Abstract:  A thermoelectric curve of GCr15-BN500 is acquired by rapid label way. The study on measuring the cutting temperature with PCBN cutter is done and the calculation formula is achieved. A series of experiments about cutting temperature are made for different hardness tempering bearing steel at the same time. The rule that cutting temperature increases with increasing of the cutting speed, feed, back engagement of the cutting edge is gained. It is known that the cutting temperature is highest under the condition that back engagement of cutting edge α_p≥2.5mm and the machined material hardness equals to 50HRC.

Key words: PCBN cutter  Cutting temperature  Bearing steel

* This project is supported by Provincial Natural Science Foundation of Heilongjiang. Manuscript received on October 19, 1998; revised manuscript December 10, 1998

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