Todays high-strength steels and ultra-high-strength steels have achieved a good weight reduction of vehicles, improved collision strength and safety performance of vehicles, and have therefore become important development directions for automotive st
Today's high-strength steels and ultra-high-strength steels have achieved a good weight reduction of vehicles, improved collision strength and safety performance of vehicles, and have therefore become important development directions for automotive steels. However, with the increase of sheet strength, the traditional cold stamping process is prone to cracking during the forming process, which cannot meet the processing requirements of high-strength steel plates. In the case that the forming conditions cannot be met, the hot stamping forming technology of ultra-high-strength steel sheets is gradually studied internationally. This technology is a new process that integrates forming, heat transfer, and microstructure transformation. It mainly uses the characteristics of high-temperature austenite to increase the plasticity of the sheet and reduce the yield strength. However, hot forming requires in-depth research on process conditions, metal phase transitions, and CAE analysis technology. This technology is monopolized by foreign manufacturers and domestic development is slow.
In the past, deep-drawn or heavy-drawn parts were produced. Everyone thought that EP lubricants are the best choice for protecting molds. Sulfur and chlorine EP additives have been blended into pure oil to improve mold life for a long time. However, with the emergence of new metals, high-strength steels and strict environmental protection requirements, the value of EP oil-based lubricants has decreased and even lost the market.
In the formation of high-strength steel at high temperatures, EP oil-based lubricants have lost their performance and cannot provide a physical mold protection diaphragm in extreme temperature applications. Extreme temperature IRMCO high solid polymer lubricants provide the necessary protection. As the metal deforms in the stamping die and the temperature continues to increase, the EP oil-based lubricant will become thinner, and in some cases will reach the flash point or burn (smoke). IRMCO high-molecular polymer lubricants generally start to spray with a much lower consistency. As the temperature rises during the forming process, it becomes thicker and tougher. In fact, macromolecule extreme temperature lubricants are "hot-seeking" and will stick to the metal, forming a diaphragm that can reduce friction. This protective barrier allows the workpiece to be stretched without cracking and bonding during the molding of the most demanding workpieces to control friction and metal flow. Effectively protect the mold, prolong the service life of the mold, and improve the strength of stamping.
