专科毕业设计(论文)设计题目:管材倾斜45°固定焊接工艺及操作技巧系部:船舶与港口工程系专业:焊接技术及自动化班级:焊接101301姓名:鲍智敏学号:103712130101指导教师:刘军华职称:副教授2013年6月南京摘要单面焊手工电弧焊成形技术是在更大程度的困难,操作技术,但它也是锅炉,压力容器,管道焊工必须熟悉与基本技能。尽快掌握尽可能单面焊技术,不仅是焊工本人,也是用人单位的极大关注。倾斜45°固定管对接焊,因为“锅炉压力容器压力管道焊工和管理规则”以来出现的颁布和实施的试验项目。45°倾斜固定管对接焊缝管之间的垂直和水平之间的固定的固定管焊接操作的焊接方法。只要外行单面焊技术的基本技能,掌握焊接的操作方法是不是太困难。管材倾斜45°焊接技能是压力容器及船舶建造领域焊工取证的重点项目,操作过程难度较大。本文综合针对管材45°焊接操作难点及容易出现的问题,管材倾斜45°固定焊接操作技巧。关键词管材倾斜45°固定焊接焊接工艺焊接操作技巧AbstractSideweldingSMAWformingtechnologyisamongagreaterdegreeofdifficultyoperatingtechniques,butitisalsoboilers,pressurevessels,pipingweldermustbefamiliarwiththebasicskills.Graspassoonaspossiblesideweldingtechnology,notonlyisthewelderhimself,butalsoofgreatconcerntotheemployer.45°tiltfixedpipebuttweldingsinceBoilerandPressureVesselandPressurePipingweldersandmanagementruleshaveemergedsincethepromulgationandimplementationoftestitems.45°tiltfixedtubebuttweldpipeisbetweentheverticalandhorizontalfixedbetweenafixedpipeweldingmethodforweldingoperations.Aslongasalaysideweldingtechnologybasicskills,mastertheweldingmethodofoperationisnottoodifficult.45°tiltpipeweldingskillsarepressurevesselsandshipconstructionwelderforensicskeyprojectareas,theoperationmoredifficult.Thisintegratedpipe45°weldingoperationagainstdifficultiesandpronetoproblems,pipeweldingoperationfixed45°tiltskills.Keywords45°tiltfixedweldedpipeWeldingWeldingtechniques目录前言..................................................................................................................................................................................11倾斜45°焊接技能的应用.................................................................................................................................21.1船舶规范中的应用...................................................................................................................................错误!未定义书签。1.2压力容器规范中的应用..........................................................................................................................错误!未定义书签。1.3其他领域中的应用...................................................................................................................................21.4操作难度及容易出现的问题........................................................................................................................22焊接工艺规范........................................................................................................................................................32.1焊前准备.....................................................................................................................................................错误!未定义书签。2.2焊接工艺要点...............................................................................................................................................43焊接操作方法........................................................................................................................................................73.1打底层操作方法.......................................................................................................................................73.2盖面层操作方法...........................................................................................................................................94焊接缺陷所引起的问题.....................................................................................................................................104.1焊接缺陷对生产的影响.........................................................................................................................104.2焊接缺陷的安全隐患...................................................................................................................................105目前对合理焊接工艺的要求............................................................................................................................105.1对目前焊接工艺需求的形式分析............................................................................................................105.2需求合理的焊接工艺路线的主要领域..........................................................................................11结论.............................................................................................................................................................................11致谢.......................................................................................................................................................14参考文献................................................................................................................................................................151前言45°角之间的管固定焊接是水平和垂直的固定管固定管之间的焊接位置。挂横焊两个位置的操作有许多共同点,但也有其独特的地方。它集成了几乎所有的管板的焊接技术,斜率接近起重机管道焊接位置时,可以使用悬挂管焊接技术,接近横焊,管的横焊技术可用于管道坡度。由于建造和安装的过程中会发生变化的斜率的管材,但焊接方法是相近似的。为了克服小直径45°固定管TIG打底层时因焊接位置的关系而影响焊接质量的问题,采取了斜仰焊位置内填丝、向上焊外填丝和向下焊内填丝三种方式相结合的焊接方法。通过大量的实践证明,采用该方式进行焊接,既可以解决在空间位置上左手操作不方便,又可以保证焊接质量,确保管内外余高达到要求和获得良好成形。21倾斜45°焊接技能的应用1.1船舶规范中的应用在船舶的建造过程中,焊接是关键和辅助技术,焊接工作,和30%至40%的总的成本之一,在各种制造行业中,焊接是一个非常重要的过程。根据工业发达国家的统计,每年仅可用于焊后钢材占钢材生产总量的45%左右。不仅可以解决各种钢板焊接连接,而且还可以解决铝,铜等有色金属和特种金属,如钛钴连接。在船舶管管对接焊中,倾斜45°角焊接技术又是尤为重要的焊接工艺。它