The meaning of high-strength steel plate | hight strength steel house
It is an indisputable fact that lubrication affects moldability. Therefore, high-performance lubricants can provide a higher-performance film to protect the metal from breaking, fracturing, or being welded to the mold. A good lubricant can also reduce frictional heat, make the metal flow uninterrupted and control wrinkling or breakage.
In response to this problem, American IRMCO, as a world-renowned professional company engaged in lubrication research and manufacturing, has successfully developed a new type of water-based lubrication technology since 30 years ago to solve the forming problem of high-strength steel. In the following, we will discuss our opinions and opinions from the perspective of lubrication and the characteristics of the lubrication technology based on years of research and use. as follows:
First, the lubrication guarantee under severe conditions.
1. Due to the high yield force of high-strength steel, it needs more energy to yield than ordinary plates. In addition to deformation, this energy is largely due to the collision (friction) between the plate and the mold. Therefore, as the deformation temperature of the metal in the stamping die will continue to rise, the oil-based lubricant will become thinner, and in some cases it will reach the flash point or burn (smoke), and the lubrication will fail. The IRMCO polymer extreme temperature lubricant contains extreme pressure resistance and has "heat-seeking" and will stick to the metal. As the temperature rises, a tough protective barrier is formed on the surface of the mold and the plate, thereby reducing Friction and temperature, to help the workpiece better elongation, in order to control friction and metal flow; at the same time to protect the metal from overheating, blackening, cracking and bonding. (Figure 4 below)
At the same time, according to the problems in the actual test, we replicate the results of the field test in the laboratory. Different formulations of oil-based and conventional (soap)-based synthetic lubricants do not work properly on high-strength steel. The scrap rate and mold wear (scratches) are out of control. (Figure 5 below)
The American Green Leaf Technology Laboratory conducted a forming comparison experiment on IRMCO products and the tensile oils and synthetic lubricants certified by the automotive industry on the DP780 ultra-high-strength steel in the United States. The Interlaken tensile molding test method of Ohio State University was used. This method proved to be very accurate for testing actual results. The value achieved by IRMCO is 145, which is 25% higher than the 115 of the automotive industry certified stretch oil and 110 of the synthetic lubricant. The larger the value, the better the forming ability (Figure 6 below).
2. Due to the temperature generated during the stamping process and the relatively large heat capacity of the oil, the thermal diffusion is relatively poor. The IRMCO water-based lubricant forms water vapor due to temperature to take away the heat, which not only effectively reduces the temperature and protects the mold, but also the micro-welding wear caused by the temperature will be effectively controlled. At the same time, the stroke times can be improved.
Second, the performance of the tool coating is closely related to the quality of the lubricant.
Traditional physical vapor deposition (PVD) and chemical vapor deposition (CVD) coatings require external lubrication to maximize performance. IRMCO pointed out: "The thermal diffusion process can reduce friction and wear problems. The vanadium carbide produced by thermal diffusion can form a durable, hard surface, which will greatly increase the service life of the tool when forming and stamping the die surface. If the lubricant used cannot withstand high temperature, wear and the work hardening of advanced high-strength steel, its value will be greatly reduced. Therefore, using a lubricant that can meet the needs of high-strength steel is the key to maximizing the service life of the coating."
According to the advancement of IRMCO technology and many years of application experience, high-strength steel stamping dies can meet production needs without costly coating costs, and can extend the life of the die. From (Figure 7 below) we can see the protective effect of IRMCO lubrication technology on the mold. After 3,000 workpieces were punched, the surface quality of the workpieces and the mold surface were significantly improved (surface scratches were significantly reduced).
Third, high-performance lubrication can make the quality of the workpiece more stable.
The mold gap and the geometric design of the mold are important contents for realizing the dimensional accuracy of the workpiece. Therefore, this is directly related to the technical requirements for metal materials and lubricants. If the gap is smaller, the tighter the friction, the greater the friction, the higher the requirements for lubricant, but the higher the forming accuracy of the workpiece. Because IRMCO can better control friction and metal flow, it can ensure the quality of the workpiece is more stable.
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