Thermal behaviour of oil contaminated residues from metal cutting

The thermal behaviour of oil contaminated residues from metal cutting is studied using thermogravimetric analysis (TGA) and differential thermal analysis (DTA). Reaction energy, peak shift and formal activation energy were determined. It was found that the combustion of oil is increased because of tribomechanical activation at the metal surface. To avoid uncontrolled ignitions during transport or storage of these sludges, guidelines for their save handling were established.