Evaluation of machinability profitability of low carbon steels using wear tests

Machinability testing plays a crucial role in the metallurgical industry despite its inherent cost and time requirements. This study aims to introduce a new approach by establishing a correlation between dry wear and pin-on-disc turning tests, potentially allowing their interchangeability. The industry is particularly interested in this challenge due to the simplification of its application and the reduction of costs and time compared to the conventional turning test. The correlation between dry wear and pin-on-disc turning tests was investigated using three low carbon steel grades (12L14, 1212 and 1018) and three medium cutting speeds (150, 180 and 240 m/min). In addition, a comprehensive cost-energy comparison is carried out to emphasize the importance of identifying an equivalent laboratory test to the traditional machinability test. The results obtained reveal a strong correlation between the two wear tests. On the other hand, the relative cost analysis shows that the pin-on-disc test costs only 14% of the long-duration turning test, highlighting the cost-effectiveness.

Published paper:

Correlating dry wear turning and pin-on-disc tests: a cost-effective approach to machinability evaluation for low carbon steel grades
Daniel Martínez Krahmer; Vitaliy Martynenko; Alberto Pereyra Osenda; Antonio J. Sánchez Egea
Journal of the Brazilian Society of Mechanical Sciences and Engineering