Yong Wei mold steel, SUS440C die steel, SUS440C provided by Yong Wei steel mold. We are a steel mold, Dongguan City, An Yongwei shop (www.dgyongwei.com) located at: Dongguan specializes in: mold steel one, high-strength cast iron bed, the internal stress relief, so material stability, precision unchanged, the most suitable stamping production. 2, double guide column, a central pillar structure, using zero error to replace the traditional ball bearing slide structure, the dynamic friction to a minimum, with the forced lubrication to minimize thermal distortion and highest precision. 3, optional reverse side move to reduce vibration balancing device that Punch has the best accuracy and stability. 4, manual transfer mode SUS440C die steel, with a display of high modulus and hydraulic locking device to facilitate transfer mode operation. 5, HMI microcomputer control SUS440C sheet, value, fault monitoring system, the screen display for easy operation. Hot red hardness at high temperature working die, required to maintain its organization and stability, thereby maintaining a sufficiently high hardness, this performance is called red hardness. Carbon tool steel, low alloy tool steel is usually able to maintain this performance in the temperature range 180 ~ 250 ℃, the chromium-molybdenum hot work die steel is generally in the temperature range of 550 ~ 600 ℃ to maintain this performance. Red hardness of steel depends on the chemical composition and heat treatment of steel. Mold heat treatment is important to ensure mold process performance. It follows the performance of the mold has a direct impact. Manufacture of precision molds: organizational change is uneven, not completely formed and heat treatment of residual stress caused by excessive mold after heat treatment, assembly and mold deformation during use Hitachi SUS440C, thereby reducing the accuracy of the mold, or even scrapped. The strength of the mold: the development of improper heat treatment process, heat treatment operations are not standardized or heat treatment equipment status is not intact, resulting in being mold strength (hardness) less than the design requirements for processing.