| Stainless steel material has good comprehensive performance, which has been widely used in construction, marine device, aerospace, food chemical and other industries, at present the cutting of stainless steel products is poor, the efficiency is low, and it has become an urgent problem to be solved in manufacturing industry.Cutting force is the most important physical parameters in the process of cutting. It directly affects the machining precision and quality. In this paper, the empirical formula of cutting force is established and verified for the feature of austenitic stainless steel 0Cr18Ni9 and carbide coated tools YBC151 by multi-factor orthogonal experiment method in dry cutting experiments. Experimental results show that the greatest impact is on the cutting depth of cut, followed by feed rate, cutting speed is minimal impact. When using high cutting speed, low feed rate and the small depth of cut, cutting force can be less.Tool wear and chip control reflect the main indicators of materials machinability. Based on the cutting time under different cutting tool, it is found that the mainly wear patterns of carbide coated tool YBC151 are as follows: Rake face wear, flank wear, micro-chipping and the coating peeling off and so on. Tool wear is mainly due to mechanical stress and impact, adhesive wear, diffusion wear and certain oxidation wear, but also to a certain extent caused by the growth and peeling off of bue. Chips are observed through the experiment in case of different cutting parameters. The conclusion that chip deformation coefficient of austenitic stainless steel 0Cr18Ni9 by the greatest impact on feed, followed by depth of cut, the cutting speed with minimal impact was came out.The results show that it is effective to predict the cutting force when establishing an experiential formula.The safe and efficient production of austenitic stainless steel 0Cr18Ni9 could be ensured by the analysis of the wear of cutting tool and chip form. |
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