Machinability of C45e Steel - Application of Minimum Quantity Lubrication and High Pressure Jet Assisted Machining Techniques

Abstract

SummaryIn this paper, machinability of turned steel defined by monitoring of cutting forces, tool wear, surface quality and chip shape is presented. Experimental investigations were performed on untreated carbon steel C45E (hardness 45 HRc) and on surface induction hardened steel C45E (surface layer hardness 58 HRc). The analysis of machinability was performed under different cooling and lubrication conditions: conventional flooding, minimum quantity lubrication (MQL) and a hybrid machining method, i.e. high pressure jet assisted machining (HPJAM). The investigation was carried out for higher values of processing parameters. The results show the advantages of the advanced cooling and lubricating techniques, i.e. an increase in productivity and a reduction in production costs. The analysis of the results shows that the application of HPJAM gives superior machinability. Beside excellent chip breakability achieved in HPJAM, especially in hardened steel machining, significant improvement in tool life and reduction in cutting forces can be achieved.

Possibilities of Application of High Pressure Jet Assisted Machining in Hard Turning with Carbide Tools

“…The possibility of application of carbide tools in hard turning, by using a special cooling and lubrication technique were the focus of research in this paper. This paper presents the results of investigation of the author's team in area of hard turning [22][23][24][25]. In this investigation the capabilities of conventional and HPC in hard turning on two hard-to-machine materials (hard-chromed and surface hardened steel Ck45 (58 HRc) and hardened bearing steel 100Cr6 (62 HRc)) are compared.…”

“…Tool wear in conventional cooling in turning of Ck45 (58 HRc)[24]. Tool wear in HPJAM of Ck45 (58 HRc)[24].…”

A novel approach of applying copper nanoparticles in minimum quantity lubrication for milling of Ti-6Al-4V

“…Ecofriendly machining technique such as MQL has been promoted for its better machinability at higher cutting speed compared with conventional flood cooling. Nevertheless, its capability to carry away the heat is limited [1][2][3]. With the development of nanoscience and nanotechnology, some researchers mixed nanoparticles into base fluid to improve the characters, such as thermal conductivity, specific heat, and heat transfer coefficient in the field of heat transfer and this approach may provide an alternative way to improve the cooling performance of MQL [4][5][6].…”