灰铸铁制动鼓石墨钝化生产工艺探讨
Investigation on Graphite Passivation Production Technology of Gray Cast Iron Brake Drum
李建 1汤森 1闫启栋 2秦鹏鹏 1谢文博1
作者信息
- 1. 驻马店中集华骏铸造有限公司,河南驻马店 463000
- 2. 禹州市恒利来新材料股份有限公司,河南禹州 452570
- 折叠
摘要
针对商用车在反复刹车时频繁的冷热循环易造成制动鼓开裂失效的问题,提出一种利用稀土元素、氮元素及钝化处理工艺钝化片状石墨端部的方法.在高碳当量成分条件下(CE≥3.9％),探讨灰铸铁制动鼓石墨钝化材质及生产工艺,提高制动鼓的常规力学性能和抗热疲劳性能,为商用车耐热及抗热疲劳制动鼓铸件的生产提供技术支持.
Abstract
Aiming at the problem that the brake drum cracking failure is easily caused by frequent cold and hot cycles during repeated braking of commercial vehicles,a method of passivating the-flake graphite end by using of rare earth element,nitrogen element and passivation process is proposed.Under the condition of high carbon equivalent composition(CE≥3.9％),the graphite passivation material and production process of the gray cast iron brake drum were investigated to improve the conventional mechanical properties and thermal fatigue resistance properties of the brake drum,and provided technical support for the production of heat-resistant and hermal fatigue resistance brake drum castings for commercial vehicles.
关键词
灰铸铁/制动鼓/抗热疲劳性能/石墨端部钝化/金相组织Key words
gray cast iron/brake drum/thermal fatigue resistance property/graphite end passivation/metallographic structure引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据