电极端面直径对热成形钢熔核直径的影响

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中图分类号：U466；TG44 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250187

TheInfluenceof Electrode Tip Diameter ontheDiameter ofHotStamped Steel Nugget

，，Zhao Dezhi，Liu Linkun，Xiong Youwu （ ， ）

Abstract：Toquantitativelyanalyze the impact of electrode tip diameteronnugget diameter，resistance spot weldingexperimentsand finite element analysisare conducted on hot-stamped stel using electrode tips with diameters of 6mm and 8mm.The welding currents required toobtain the same nugget diameter with electrode tips of 6 mmand8mm diameterare investigated.Theresultsshow that withthe increaseofweldingcurent，theinfluenceof electrode tipon thenugget diameter of resistance spot welding is graduallyreduced without splash；Whensplash occurs，the electrode tip of 8mm diameter will obtain a larger nugget diameter. For 1.6 mm HQAS1500H+1.6 mm HQAS1500H plate group lapping form，the resistance spot welding processparameters can be set as 3.43 kN/420 ms/7 kA～ （20 .Within the common production welding current range，the deviation between the actual nugget diameter and the finite element simulation nugget diameter is less than 10% ：

Keywords：Resistancespotweld，Electrodetipdiameter，Nuggetdiameter，Hot-stampedsteel

1前言

电阻点焊是车身制造中应用最广泛的金属连接工艺， 90% 以上的车身装配工作是由电阻点焊完成的。（剩余6263字）