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<h3> <img src="/uploads/180411/1-1P4110S934I0-lp.jpg" style="margin-right: 10px; float: left; width: 180px; height: 180px;" /><a href="http://"><span style="font-size:36px;">彎頭機</span></a></h3> <p> <span style="font-size:20px;">彎頭焊機是指焊件裝配成搭接或?qū)咏宇^并置于兩滾輪電極之間，滾輪電極加壓焊件并轉(zhuǎn)動，連續(xù)或斷續(xù)脈沖送電，形成一條連續(xù)焊縫的電阻焊機器。也可以說，縫焊機是點焊的一種演變?？p焊廣泛地應(yīng)用在要求密封性的接頭制造上，有時也</span></p> <p> <span style="font-size:20px;">用來焊接普通非密封性的板金件，被焊金屬材料的厚度通常在0.1～2.5mm。</span></p> <p> <span style="font-size:20px;">工作原理縫焊接頭形成過程（斷續(xù)）縫焊時，每一焊點同樣要經(jīng)過預(yù)壓、通電加熱和冷卻結(jié)晶三個階段。但由于縫焊時滾輪電極與焊件間相對位置的迅速變化，使此三階段不像點焊時區(qū)分的那樣明顯。可以認為：1) 在滾輪電極直接壓緊下，正</span></p> <p> <span style="font-size:20px;">被通電加熱的金屬，系處于“通電加熱階段”。2) 即將進入滾輪電極下面的鄰近金屬，受到一定的預(yù)熱和滾輪電極部分壓力作用，系處在“預(yù)壓階段”。3) 剛從滾輪電極下面出來的鄰近金屬，一方面開始冷卻，同時尚受到滾輪電極部分壓力作用。</span></p> <p> </p> <div id="rxkuocjdbj" class="float_c news-page fs_14"> <div id="rxkuocjdbj" class="f_l"> 上一篇：<a href='/hyxw/1640.html'>彎管機的結(jié)構(gòu)構(gòu)造</a> </div> <div id="rxkuocjdbj" class="f_r"> 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