Izvorni znanstveni članak

https://doi.org/10.21278/TOF.40204

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

Gordana Globočki - Lakić ; Faculty of Mechanical Engineering, University of Banjaluka, Banjaluka, Bosnia and Herzegovina
Branislav Sredanović ; Faculty of Mechanical Engineering, University of Banjaluka, Banjaluka, Bosnia and Herzegovina
Davorin Kramar ; Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia
Janez Kopač ; Faculty of Mechanical Engineering, University of Ljubljana, Ljubljana, Slovenia

Sažetak

In 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.

Ključne riječi

HPJAM; MQL; modelling; machinability

Hrčak ID:

161991

URI

https://hrcak.srce.hr/161991

Datum izdavanja:

18.7.2016.

Posjeta: 1.802 *