Tehnički vjesnik, Vol. 24 No. 1, 2017.
Izvorni znanstveni članak
https://doi.org/10.17559/TV-20150717121347
Investigation of contact phenomena in turning using tools made of low-alloy high-speed steels
Jan Jaworski
; Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
Tomasz Trzepieciński
; Rzeszow University of Technology, Al. Powstańców Warszawy 12, 35-959 Rzeszów, Poland
Sažetak
In this paper, the results of investigations of the temperature field distribution and tool wearing during C60 steel turning are presented. Abrasive wear resistance tests were carried out for cutters made of low-alloy high-speed steel. Steel samples were heat treated, and then were subjected to ion nitriding, TiN coating, or to complex treatment. The influence of cutting speed on the value of basic parameters characterising the phenomena in the tool-workpiece interface i.e., cutting ratio, friction coefficient, and length of contact zone, is analysed. An increase of the rake angle value causes an increase in the value of the friction coefficient. Furthermore, the value of the friction coefficient decreases as the thickness of the cut layer increases. Investigations of the durability of cutting edges confirm that to define the working conditions of the tool, resistance against hardness loss with increasing temperature at temperatures higher and lower than the tempering temperature is the most significant.
Ključne riječi
cut layer; cutting ratio; high-speed steels; turning; wear; wear resistance
Hrčak ID:
174710
URI
Datum izdavanja:
10.2.2017.
Posjeta: 1.791 *