文献类型：期刊文献

英文题名：Stress testing and analysis of self-adjusting bolt in converter

作者：Pang, Shan[1]; Lai, Yuanyuan[1]

第一作者：庞姗

机构：[1] College of Mechanical and Electrical Engineering, Xinxiang University, Xinxiang, Henan, 453007, China

第一机构：新乡学院机电工程学院

年份：2013

卷号：23

期号：SPEC.ISSUE

起止页码：1-9

外文期刊名：Sensors and Transducers

收录：EI(收录号：20135017073158);Scopus(收录号：2-s2.0-84889068350)

语种：英文

外文关键词：Bolts - Equipment - Machinery - Safety factor - Slags - Steelmaking - Stress analysis - Stress concentration

摘要：Oxygen top-blow converter is the main equipment in steelmaking. Because the support system of converter bears total weight of the converter and its accessories, and meanwhile transfers tilting torque from tilting mechanism to converter, it is the most important part of converter machinery. The joint equipment which links the converter with the support ring is the key part in the support system, and its work reliability decides the security and economy of steel production. The joint equipment of self-adjust bolt has the advantages of heavyload bear capacity and simple structure, so it's the most important part of converter machinery. From the field testing, a large shock takes when the converter starting or breaking. Once the converter is broken at 63°, the self-adjusting bolts are under a large load and dynamic impact. So it will cause great instantaneous stress and a serious shortage of stress intensity reserves, the crack sources easily come up in the region of stress concentration and dangerous section. Analysis of steel-making process on all typical operating conditions, such as temperature detecting, sampling and slag tapping, the stress at 75° is close to the theoretical maximum stress caused at 63°, so the converter angle should be strictly controlled to avoid converter's braking at 63° and limit the residence time. At the same time the auxiliary converter connection (such as clamping, etc.) should be strengthened to ensure the safety factor. Finally some optimization measures should be made to increase the reserve strength and fully meet the production requirements. ? 2013 IFSA Publishing. All rights reserved.