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高磷铸铁闸瓦的横向裂纹与安全可靠性的关系高磷铸铁闸瓦由于磷含量高达2%以上,使用中在瓦鼻两侧易产生横向裂纹,它是闸瓦断裂的前提,但不是必要条件。导致闸瓦断裂的主要原因是钢背严重渗碳,其次是瓦背与瓦托四爪接触不好。防止高磷铸铁闸瓦产生断裂
The relationship between the transverse cracks of high phosphorous cast iron brake shoe and its safety and reliability The high phosphorus cast iron brake shoe is easy to produce transverse cracks on both sides of the tile and nose due to the phosphorus content of more than 2% condition. The main reason leading to the brake shoe fracture is the serious carburization of the steel back, followed by the poor contact between the back of the shoe and the four-legged shovel. To prevent high-phosphorus cast iron brake shoe rupture