Residual stresses in surface layer after dry and MQL turning of AISI 316L steel

被引:36
作者
Tadeusz Leppert
Ru Lin Peng
机构
[1] Department of Production Engineering, University of Technology and Life Sciences, 85-789 Bydgoszcz
[2] Department of Management and Engineering, Linköping University, Linköping
关键词
Dry turning; MQL; Residual stresses; Surface layer;
D O I
10.1007/s11740-012-0389-3
中图分类号
学科分类号
摘要
Residual stresses in the surface layer exert a significant impact on functional aspects of machined parts. Their type and value depend on the workpiece and tool material properties, cutting parameters and cooling and lubrication conditions in the tool-chip-machined surface interface. As the effects of material properties and cutting parameters have been widely studied, the influence of cooling and lubrication conditions, especially minimum quantity lubrication (MQL) on the surface layer residual stresses and the relationships between them have not been investigated. In this paper the effects of dry, MQL cutting and cutting with emulsion conditions together with cutting parameters on residual stresses after turning AISI 316L steel were investigated. X-ray diffraction method was used for measuring superficial residual stresses in the cutting (hoop) and feed (axial) directions. Tensile residual stresses were detected in both directions and the values in the cutting direction turned out to be higher than in the feed direction. The effects of cooling and lubrication conditions largely depend on the selected cutting parameters, whose influence is linked to the cutting zone cooling and lubrication mode. Elaborated regression functions allow calculation and optimization of residual stresses in turning AISI 316L steel, depending on cooling and lubrication conditions as well as cutting parameters. © 2012 The Author(s).
引用
收藏
页码:367 / 374
页数:7
相关论文
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