25 Pages

Metalforming Applications

WithKevin H. Tucker

This chapter reviews some of the more common metalforming applications. Metalforming lubricants are as varied as the many operations in which they are used. Animal fats were possibly the first lubricants used in primitive operations, as they were readily available from the rendering of animal carcasses. Petroleum mineral oil is probably the most widely used lubricant for metalforming. In light duty stamping, blanking, and coining operations, mineral oil provides the necessary separation of tool from metal. One of the biggest physical differences between metalforming fluids and other metalworking fluids is the physical appearance of the fluids. The physical appearance of stamping and drawing fluids varies with the type of lubricant used. Extreme-pressure (EP) lubricants are those lubricants that will react under increased temperatures and undergo a chemical reaction with the metal surface. In metalforming lubricants, chlorine, sulfur, and phosphorus have been the traditional EP lubricants.