“大红山—玉钢”铁精矿管道焊接质量缺陷及改进分析

发布时间：2018-03-06 09:48

本文选题：管道焊接　切入点：焊接质量　出处：《云南大学》2015年硕士论文　论文类型：学位论文

【摘要】：长距离输送铁精矿管道工程由于建设的复杂性与不可逆性,要求施工一次完成,避免因质量问题后期进行弥补带来巨大的经济损失,而管道现场焊接的高效率和安全可靠性是衡量管道施工质量的最重要一个指标。由于管道距离长、沿途地形复杂、基本在野外作业,且工艺上要求管道耐高压、耐磨损、全天24小时输送,对于焊接质量的要求远远高于普通输送管道焊接。焊接质量的好坏、效率的高低都直接影响到工程的施工工期和管道的安全运行,因此焊接过程质量的控制显得更为重要。本文针对“大红山—玉钢”长距离输送铁精矿管道工程中的焊接质量引入全面质量管理理念,采用4M1E的方法,结合管道焊接工艺要求,对影响焊接质量的人员、机械、材料、方法、环境因素进行了分析,采用“策划—实施—检查—改进”的PDCA循环的管理模式,及时解决了焊接施工中的有关问题,控制并不断提高了焊接施工质量,重点针对“错边,未焊透,咬边,焊缝过宽,气孔夹渣”等焊接质量缺陷进行分析改进。通过PDCA质量分析改进,解决了管道焊接过程中容易出现的各种质量缺陷,整个“大红山—玉钢”铁精矿管道焊接质量通过率控制在97%左右,同时培养了焊接人才队伍,减少了施工工序,缩短了工程建设工期,最终减少了项目投入,保障了后期管道的安全运行。本文研究认为,全面质量管理对于长距离输送铁精矿管道工程中焊接质量控制具有较大的指导与提升作用,由于全面质量管理具有长期的、全员的、全方位、全过程的要求,今后应更深入更广泛地应用到铁精矿管道工程的各个方面。
[Abstract]:Long distance transport of iron concentrate pipeline engineering due to the complexity of the construction and irreversibility, require the construction of a complete, to avoid quality problems later make up bring huge economic losses, and the scene of the pipeline efficiency and safety reliability of welding is one of the most important indicators to measure the pipeline construction quality. Because of the long distance pipeline, complex topography and the basic work in the field, and the process requirements of pipeline pressure resistance, wear resistance, all day long 24 hours delivery, for the requirement of the welding quality is much higher than ordinary pipeline welding. The welding quality and efficiency directly affect the safe operation of the project construction and pipeline, so the quality control of the welding process is is more important. According to the "Hongshan jade - steel" long distance transportation pipeline engineering welding quality of iron concentrate in the introduction of the concept of total quality management, using 4M1E The method, combined with the pipeline welding process requirements, the influence on the welding quality of personnel, machinery, material, method, environment factors are analyzed, the planning implementing PDCA circulation management mode check improved, timely solve the relevant problems in the construction of the welding control, and constantly improve the quality of welding construction, focusing on the wrong side, unweld, undercut, weld width, porosity slag and other welding defects were analyzed. Through the analysis and improvement of PDCA quality, solve all kinds of defects appear in the process of pipeline welding, the welding quality rate around 97% the Hongshan jade - steel "iron concentrate pipeline, while training the welding personnel, reduce construction process, shorten the construction period, and ultimately reduce the project investment, guarantee the safe operation of pipeline. This paper argues that comprehensive quality Management for the long distance transportation of iron concentrate pipeline engineering welding has great guidance and enhance the role of quality control, the total quality management is a long-term, full, all-round, the whole process requirements, the future should be more widely applied to various aspects of iron concentrate pipeline project.

【学位授予单位】：云南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD50

【相似文献】