In the past, in the production of deep-drawn or heavy-drawn workpieces, everyone thought that pressure-resistant (EP) lubricants were the best choice for protecting molds. Sulfur and chlorine EP additives have a long history of being blended into neat oils to improve mold life. But with the emergence of new metal-high-strength steel and strict environmental protection requirements, the value of EP oil-based lubricants has decreased, and even lost the market.
Forming high-strength steels at elevated temperatures, EP oil-based lubricants lose their ability to provide a physical mold-protecting diaphragm in extreme temperature applications. Extreme temperature IRMCO high solids polymer lubricants provide the necessary protection. As the metal deforms in the stamping die and the temperature rises, the EP oil-based lubricants will thin, and in some cases will reach a flash point or burn (smoke). IRMCO water-based stamping lubricants generally start spraying on with a much lower consistency. As the temperature rises during forming, it becomes thicker and tougher. In fact, polymer extreme temperature lubricants are "heat-seeking" and will stick to the metal, forming a diaphragm that reduces friction. This protective barrier controls friction and metal flow by allowing the workpiece to expand without cracking and bonding when the most demanding workpieces are formed. It effectively protects the mold, prolongs the service life of the mold, and improves the strength of the stamping.
