Addition

1) In the steel producing industry, materials added to the molten bath of steel or to the molten steel in the ladle to produce the chemical composition required for the specific steel order. 2) In the coolant industry, water and other chemical additions added to maintain the proper chemistry of the fluid used in metalworking operations. These are referred to as additives and include but are not limited to fluids to enhance lubrication, detergency, pH, corrosion inhibitors and reduce residue. 3) Additions to lube oil can be made to modify their operating characteristics, such as extreme pressure functions.