Selected metal cutting processes with focus on sustainability

Abstract

To define how sustainable a method is in relation to othfiers, it is necessary to measure them numerically. This includes the creation of management models that create a link between the concept of creating value for the business with ecological and social compatibility. Sustainable production systems must comply with a series of principles and good practices in light of the Triple Bottom Lines concept. Therefore, the objective of this article is to compare and measure, focusing on the triple bottom line, different metal cutting operations used in the industry. To this end, a methodology was developed that simultaneously considers economic, social and environmental parameters. In total, thirteen variables were measured for each of the following metal cutting operations: band saw, oxyfuel, plasma, abrasive waterjet and laser cutting. This research also evaluated the surface finish of the parts obtained after the cutting operation. The main results show that the laser cutting process presented the greatest gain and the longest time for the operator, but with the worst finish. The plasma cutting process had the highest noise level and the highest tool cost. Continuous cutting with a band saw was the process that presented the greatest sustainability and best finish.