Mist jet cooling of grinding processes

One of the problems in modern grinding processes is the use and disposal of coolants, which are expensive and which can lead to ecological problems. This paper describes some experiments with a novel method of cooling the grinding process which relies on nothing but air and water for its effect, thus removing ecological hazards in a most economical way. By injecting a small amount of water into air jets which strike the grinding wheel at speeds near mach 1, it is possible to maintain a sharper wheel and better cooling than with conventional coolants and delivery systems. It is relatively simple and cheap to set up the delivery system proposed, provided the correct nozzle designs are used.