刮板作为刮板输送机的主要部件,其性能优劣直接影响整机运行的可靠性与寿命。某厂刮板在调平过程中连续发生了3件断裂。为了探究断裂原因,首先测定了断裂刮板的化学成分和硬度值,结合断口的宏观和微观形貌对裂纹源处的元素分布情况进行了检测。分析研究了此次刮板断裂发生的原因,并从设计和工艺方面提出了优化建议。 Scrapers as a scraper conveyor main components, the performance of a direct impact on machine reliability and life. A factory scraper in the leveling process occurred in three consecutive rupture. In order to investigate the reason of fracture, the chemical composition and hardness of the fracture scraper were firstly measured, and the element distributions at the crack source were detected by the macroscopic and microscopic morphology of the fracture. The reasons for the scraper rupture were analyzed and the optimization suggestions were put forward from the aspects of design and process.