中型挖掘机油管的焊接工艺设计摘要油管是支架类零件中的一种，是减速器的包容件，减速器的包容件发挥着包容性作用。它是减速器中结构较复杂的部分。它不是一个传动件，受力不高。按照结构特点和使用性能，采取Q235-A为盖板、支座和肋板等素材。按照Q235-A钢采用合适的成型工艺和焊接手段、准备合理的工艺程序、选择正确的装配手段、预测焊接的不足之处、再进行危害分析，然后找出对应的补救手段。关键词：焊接工艺、焊接手段、焊接缺陷、焊接检测AbstractBoxbelongstothebrackettypeparts,isthereduceroftheinclusionofthepartsofthereducerplayaninclusiverole.Itisacomplicatedpartinthereducer.Itisnotatransmission,theforceisnothigh.Accordingtothestructuralcharacteristicsandperformance,q235-aisselectedasthematerialofcoverplate,bearingseatandfloorplate.Accordingtoq235-asteelselecttheappropriatemoldingprocessandweldingmethod,preparereasonableprocessprocedures,selectthecorrectassemblymethod,thepredictionofweldingdefects,hazardanalysisandfindouttherelevantremedialmeasures.Keywords:weldingprocess,weldingmethod,weldingdefects,weldinginspection目录摘要..........................................................................1引言..........................................................................2第一章中型挖掘机油管焊接的母材选用及加工....................................31.1母材的选用...........................................................31.2钢材的矫正原理及方法.................................................31.3划线..................................................................41.4号料.................................................................41.4.1号料的方法......................................................51.4.2样板的分类......................................................51.4.3号料的作用......................................................51.5成形方法..............................................................51.6气割圆筒..............................................................61.7钻孔.................................................................61.8Q235的热处理.......................................................6第二章中型挖掘机油管焊接的装配工艺..........................................72.1坡口形式与焊接技术.................................................72.1.1坡口形式......................................................72.1.2坡口的加工方法.................................................82.2装配.................................................................8第三章中型挖掘机油管焊接的焊接工艺........................................133.1Q235的焊接性.......................................................133.2焊接方法及设备的选择................................................143.2.1首选：手工电弧焊...............................................153.2.2次选：CO2气体保护焊...........................................153.2.3再选：熔化极活性气体保护焊（MAG焊）.......................203.3、焊前的准备..........................................................223.4焊接工艺过程.........................................................253.5焊接接头的常见缺陷与危害和补救措施..................................27第四章夹具的设计...........................................................284.1焊接夹具的作用.....................................................304.2夹具设计的要求.....................................................324.3选择与设计焊接夹具类型的依据....................................
