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中磷闸瓦是车辆的重要配件,对其抗压性能、硬度以及化学成分都有一定的要求。根据车间生产情况,我们运用数理统计方法,建立了闸瓦的抗压与硬度、抗压与共晶度之间的回归方程,用以选择合理的配料比,准确控制铁水的化学成分,效果较好。一、数理统计的可行性铸铁的机械性能是由石墨和基体组织决定的。影响石墨化和基体组织的因素有化学成分、冷却速度、铁水温良、铸件保温时间以及炉料等。
Medium phosphorus brake shoe is an important vehicle accessories, its compressive strength, hardness and chemical composition have certain requirements. According to the production situation of the workshop, we established the regression equation between the compressive strength and hardness, the compressive strength and the eutectic degree of the brake shoe by using the mathematical statistics method to select a reasonable proportion of the ingredients and accurately control the chemical composition of the molten iron. . First, the feasibility of mathematical statistics The mechanical properties of cast iron is determined by the graphite and matrix organizations. Factors that affect the graphitization and matrix organization are chemical composition, cooling rate, hot metal temperature, casting insulation time and charge.