Cutting fluids: Part II. Recycling and clean machining

It is widely recognised by machine tool users that the effect of the cutting fluids on the environment, particularly in regard to their degradation and ultimate disposal is a major problem. Also because the machine tool operator is always in the general area of a cutting fluid, the effects of contact with the fluid is of primary concern. In addition to fumes, smoke, bacteria and odours, the fluid can also cause severe reactions on the skin and various parts of the operator's body. The classification and composition of cutting fluids have been discussed in part I [1]. While this paper (Part II) addresses the issues of the clean machining technology mainly recycling and disposal of cutting fluids.