Solving Problems with Chemicals


Environmental Friendly Metalworking Fluid : Chlorine-Free

Metalworking fluids may contain a combination of one or more base oils and a number of additives. One of the components from the  additive package consists of extreme pressure additive(s).

Extreme pressure ( EP ) additives are the vital ingredients to ensure the proper function and effectiveness of a particular cutting fluids, meaning cooling of workpiece and cutting tool, lubrication, and protection against corrosion.

As far as lubrication is concerned, a base fluid by itself may not be able to yield a satisfactory result, especially in certain heavy duty metal removal process. Hence, chemically-active extreme pressure additives, such as phosphorus, boron, chlorine or  sulfur, are added to the metalworking fluids for machining and cutting applications.

Chlorine additives,  or to be more specific,  chlorinated paraffins have been introducing into the metalworking fluid formulation since 1930. Chlorinated paraffins have found to be relatively persistent and posing significant environmental risk.  Certain grades of short chain chlorinated paraffins ( SCCPs )  have shown toxic effects on aquatic life and bioaccumulate in certain species.

Formulators are taking steps in  moving away the SCCPs from their product lines. More and more chlorine-free metal cutting oils are now available in the market.

 " ROCOL RTD Chlorine-Free Liquid is a viscous fluid for use in reaming, tapping and drilling and other metal cutting operations. ROCOL RTD Chlorine Free Liquid is suitable for all metals including hardened steels, nimonics and titanium alloys. ROCOL RTD Chlorine Free Liquid has been specifically developed to satisfy ever increasing environmental and health and safety needs in today’s markets. "