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车辆用中心盘系铸钢体,材质为ZG230—450,单件毛重分别为63kg和51kg。在车辆运行中,中心盘受到车体垂直力、水平力和冲击力的作用。因此铸件质量对车辆运行极为重要。针对我厂车辆用中心盘存在的质量问题,我们采取了工艺改进措施。 1.中心盘的质量问题 (1)中心盘易损部位常见缺陷 在现场运用中,中心盘裂损率高达50％～60％,其裂损部位大都发生在上下心盘配合的圆弧根部,其主要原因是受材质和应力集中及铸造缺陷的影响。而中心盘裂损是从产生缺
The center plate of the vehicle is cast steel body made of ZG230-450 with the gross weight of 63kg and 51kg respectively. In the vehicle operation, the center plate by the body vertical force, horizontal force and impact of the role. Therefore, casting quality is extremely important for vehicle operation. In view of the quality problems of the central disk used in our factory vehicles, we adopted the process improvement measures. 1. The quality of the central plate (1) common defects in the center of the vulnerable parts of the site In the field of use, the center of the rate of failure as high as 50% to 60%, the majority of its crack in the upper and lower parts of the heart with the arc root, The main reason is the material and stress concentration and casting defects. The center of the crack is generated from the lack of