摘要铝合金电阻点焊技术是一项即将在汽车制造中获得广泛应用的技术，其在各种焊接方法中，具有静强度高、可靠性好、性能稳定、产效率高和易于实现自动化等优点，对车身的轻量化有着重要的作用及研究意义，但铝合金电阻焊生本身也具有很大的焊接缺陷，包括铝合金的焊接性不好、焊点质量不稳定、电极烧损严重使用寿命短等，需要我们更好的试验研究，解决铝合金的焊接问题。本文慨述了铝合金电阻点焊的工艺特点、点焊工艺中的问题，以及国内外在这方面的研究现状，进行了焊接接头的影响因素的试验，并指出了铝合金点焊时影响接头质量稳定性的因素及工艺缺陷。对工艺焊接参数进行了正交分析实验，获得了最佳的工艺优化,完成了铝合金的加工工艺设计。AbstractResistancespottechnologyofAluminumisappliedwidelyinautomobilemanufacturing.InItsvariousweldingmethod,withtheadvantagesofstaticstrength,highreliability,performancestability,highproductionefficiencyandeasytorealizeautomation.It`splayaimportantroleinthelightweightofcarandhaveagreatresearchsignificance.Butaluminumalloyresistancewe-ldingitselfalsohasgreatweldingdefects.Includingthebadofaluminumalloyweldingsex,anstableofsolderqualityandsoon.Thenweneedtosolvetheexperimentalresearchofalum-inumweldingproblembetter.Thispaperdescribestheprocesscharacteristicsofaluminiumalloyresistancespot.theproblemofweldingprocessandtheresearchstatusinthisrespectathomeandabroad.wehaveaexperimentofthefactorsinweldingjoint.Pointedoutthemajorfactorswhichaffectofthequalityofweldingjointsinaluminumalloyspot.Andwehaveaorthogonalanalysisexperimentoftheprocessofweldingparameters.Thelast,AcquiredoptimalprocessoptimizationandCompletedthedesignofaluminumalloyprocessing.目录摘要.........................................................................Abstract.....................................................................目录.........................................................................第一章绪论.................................................................11.1前言................................................................11.2铝合金电阻点焊研究的必要性......................................11.3铝合金点焊所存在的问题及现状研究....................................31.3.1所存在的问题..................................................31.3.2问题的研究....................................................61.4本文研究的内容以及方案..............................................7第二章铝合金电阻点焊工艺特点分析..........................................82.1电阻点焊的原理及特点................................................82.1.1焊点的形成....................................................82.1.2点焊的工艺参数................................................92.1.3点焊的焊接循环...............................................102.1.4点焊的应用...................................................102.2铝合金电阻点焊的工艺特点...........................................112.2.1焊接性能分析.................................................112.2.2工艺特点及分析...............................................122.2.3工艺措施及焊机的选择.........................................132.3微量元素在铝合金电阻焊中的作用.....................................132.4焊前的工件清理.....................................................142.5电阻点焊的焊接工艺参数..............................................152.6本章小结...........................................................17第三章铝合金点焊的试验设计及其分析...............................
