Topping up a cars engine oil is easy. Topping up a reservoir of emulsifiable metalworking oil? Thats tricky, declared Alan Cross. Machine operators armed with science and the right tools can learn to achieve the stable oil-in-water emulsion they want, batch after batch, day after day. But impatience and improper mixing will get you a sumpful of frustration.
Poorly formed metalworking coolant can go wrong in a multitude of ways, the senior project engineer at Houghton International warned. The entire batch can destabilize. The wrong oil droplet size can form, leading to tool breakage. You may get sludge or hard-water soap formation, and foam can run amok. Needed additives may be stripped out by the filtration system. Residue and corrosion can get a foothold, and chips may float instead of settling out. In short, a nightmare.