摘要
回转窑是水泥生产系统的关键设备之一,其服役状况直接影响水泥的产量和质量.针对某水泥回转窑筒体焊缝沿筒体轴线方向开裂问题,对轮带与筒体进行力学分析,得出引起垫板处筒体焊缝开裂的应力主要包括弯曲应力、温度应力、残余应力等.结合断裂力学和弹塑性力学构建筒体焊缝裂纹的力学模型,按应力强度因子建立筒体焊缝的断裂判据,对裂纹进行安全评定,并通过现场裂纹统计证实了模型和评定的准确性,裂纹临界尺寸为141 mm.
The rotary kiln is one of the key equipment in the cement production line,which greatly affects the yield and quality of product.Focusing on the question of the cement rotary kiln's weld line crack along the axis of the tube body,the mechanics analysis was made based on the belt and the tube body.The result indicated that the stresses which bring forth the weld line crack mainly include bending stress、temperature stress、residual stress,etc.This paper established a mechanics model of weld line crack on tube ...
出处
《郑州大学学报（工学版）》
CAS
北大核心
2009年第3期52-55,64,共5页
Journal of Zhengzhou University（Engineering Science）
基金
江苏省2007年技术攻关重大项目(BE2007023)
关键词
回转窑
断裂力学
裂纹
安全评定
rotary kiln
fracture mechanics
crack
security evaluation
