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Today's high-strength steel, ultra-high strength steel to achieve a good vehicle lightweight, improve the vehicle's impact strength and safety performance, it has become an important direction for the development of automotive steel. But with the increase of sheet strength, the traditional cold stamping process is prone to rupture during the forming process, which can not meet the processing requirements of high strength steel. In the case can not meet the molding conditions, the current international research gradually ultra-high-strength steel hot stamping forming technology. The technology is a new technology that combines the forming, heat transfer and microstructure transformation. It mainly uses the high temperature austenite state, the sheet plasticity increases, the yield strength reduces the characteristics, through the mold forming process. However, thermoforming needs further study on process conditions, metal phase transitions and CAE analysis techniques, which are monopolized by foreign manufacturers and developed slowly in China.

In the past in the production of deep red or redock the workpiece, we all think pressure type (EP) lubricant is the best choice to protect the mold. It has been a long time since sulfur and chlorine EP additives have been mixed into pure oil to increase the die life. However, with the advent of new metals, high-strength steels, and stringent environmental requirements, the value of EP-based lubricants has been reduced or even lost.

At high temperature, high strength steels are formed, EP oil-based lubricants lose their properties and can not provide physical mold protection diaphragms in extreme temperature applications. Extreme temperature type IRMCO high solids polymer lubricants can provide the necessary protection. As the metal deforms in the stamping die and the temperature rises, the EP oil-based lubricant will become thinner and in some cases will flash or burn (smoke). IRMCO polymer lubricants generally have a much lower consistency when sprayed on. As the temperature rises during forming, it becomes thicker and tougher. In fact, the extreme temperature polymer lubricant has a "hot search" and will stick to the metal, forming a membrane can reduce friction. This protective barrier allows the work piece to be extended to control friction and metal flow without breaking and adhering when the most demanding work piece is molded. Effective protection of the mold, extending the service life of the mold and improve the strength of the stamping.

Dongguan Fenggang Dexiong Plastic Hardware Products Factory Views:【Statistics】 粤ICP备19048467号
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