Recovering oil from grinding sludge
In rotary and cubic ARBURG production, oil is used as a coolant, and this accumulates with the swarf in the form of "grinding sludge" after metal machining. Together with their instructor, the trainees considered how the oil could be economically extracted and reused as a valuable resource. Initial tests were carried out at the ARBURG Vocational Training Center using a small press developed and built in-house for separating the oil from the swarf. The trainees discovered that up to 60 per cent of the total weight of the saturated swarf was oil that could be recovered.