Experimental and numerical inspection of cracks in ferrule cracking of BK1 cement crusher

IF 1.2 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Frattura ed Integrita Strutturale Pub Date : 2023-06-22 DOI:10.3221/igf-esis.65.04
S. Chorfi, Fedaoui Kamel, Necib Brahim
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Abstract

This article defines the main actions planned in the procedure of non-destructive testing and analysis of defects in the BK1 industrial mill of the cement plant of the GICA group. One of the subjects attracting the attention of researchers and engineers was the propagation of cracks in the shell of the BK1 mill, which behaves like perforated plates. This inspection technique makes it possible to position and size defects (cracks) in the plates. The objective of this work is the detection of cracks in the shell of the BK1 cement mill. In order to avoid bursting of the crusher, the preventive technique of ultrasonic inspection using a multi-element translator is used, while minimizing downtime and increasing production. Found Results allow us to determine and analyze the different types of defects, which will be repaired. It was concluded that the stress concentration at the assembly holes, the vibration effects and gradient of the temperature due to the effect of welding were the causes great residual stresses at the level of the weld. We note the addition of a mass of weld during the repair of the cracks is one causes of the stress concentration.
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BK1型水泥破碎机套圈裂纹的试验与数值检测
本文定义了吉卡集团水泥厂BK1工业磨缺陷无损检测和分析程序中计划采取的主要行动。引起研究人员和工程师注意的主题之一是BK1轧机外壳中裂纹的扩展,其行为类似于穿孔板。这种检查技术可以确定板材中的缺陷(裂纹)的位置和尺寸。这项工作的目的是检测BK1水泥磨机外壳中的裂纹。为了避免破碎机爆裂,采用了使用多元件翻译器进行超声波检测的预防性技术,同时最大限度地减少了停机时间,提高了产量。发现的结果使我们能够确定和分析不同类型的缺陷,这些缺陷将被修复。结果表明,装配孔处的应力集中、振动效应和焊接效应引起的温度梯度是导致焊缝处残余应力较大的原因。我们注意到,在裂纹修复过程中增加大量焊缝是应力集中的原因之一。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Frattura ed Integrita Strutturale
Frattura ed Integrita Strutturale Engineering-Mechanical Engineering
CiteScore
3.40
自引率
0.00%
发文量
114
审稿时长
6 weeks
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