The Study Of Cryogenic Cutting Of 316l Stainless Steel

In the 21st century, hard-cutting materials have been used increasingly widely in many respects, but how to machine hard-cutting materials efficiently is still a nagging problem at all times. Because of its poor machinability, not only wear of cutting tool is serious, but difficult to maintain a high manufacturing quality with the traditional cutting method. So it is necessary to apply new cutting methods to improve manufacturing quality and reduce the cost of production. At present, the green cutting technology has become a trend, the experimental study of cryogenic cutting on hard-cutting materials with the method of liquid nitrogen instead of cutting fluid was put forward in the paper.In this paper, the cutting law of hard-cutting materials had been analyzed and study of mechanism of cryogenic cutting was done. Through the contrast experiments on CK6132B CNC lathe which took typical hard-cutting material 00Cr17Ni14Mo2 Stainless Steel (AISI316L) as the research object and adopted two different kinds machining ways-dry cutting and cryogenic cutting with liquid nitrogen, the changes of cutting force, surface quality, wear of cutter and chip-breaking behavior on two cutting conditions were studied. And by studying the law of surface roughness of 316L stainless steel influenced by the three cutting elements by orthogonal test, the cutting parameters were optimized.By comparing research on the cryogenic cutting and dry cutting, it is verified that the cryogenic cutting method with liquid nitrogen can improve the surface quality, reduce the wear of cutter and enhance the chip-breaking effects. To some extent, it can decrease the cutting force. As a clean and effective way of cutting, the cryogenic cutting technology with liquid nitrogen possesses an intensive developing future.