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style="margin-right: 10px; float: left; width: 180px; height: 180px;" /><strong style="font-size: 36px;"><a href="http://">彎頭機(jī)</a>生產(chǎn)彎頭的整個(gè)過(guò)程</strong></h3> <p> <br /> <span style="font-size:22px;"><strong><a href="http://">彎頭機(jī)</a>大家可能都看見過(guò)，若果沒有看到可以在網(wǎng)站中選擇看一下推制機(jī)，<a href="http://">彎頭機(jī)</a>操作很簡(jiǎn)單，它是一個(gè)芯棒或牛角，芯棒有細(xì)變粗，推制過(guò)程是一個(gè)擴(kuò)徑帶彎曲的過(guò)程。后邊有支撐，把下料管端穿入芯棒，后面有一牌坊架將芯棒固定。中間有一小車，小車有的通過(guò)液壓傳動(dòng)，有的通過(guò)機(jī)械傳動(dòng)即絲桿傳動(dòng)，然后往前推小車。小車推著管子順著芯棒往前走，芯棒外有一個(gè)感應(yīng)圈，把管子加熱，加熱好，然后小車把管子推下，就加工好一個(gè)，推好后，彎頭要就此熱狀態(tài)進(jìn)行整形。應(yīng)為有的彎頭處理不當(dāng)后，就會(huì)扭曲，這是不允許的。另外推頭后一般都是前端外徑大，要通過(guò)整形模進(jìn)行整形。整形模實(shí)際上就是一個(gè)壓力機(jī)，要有一套模具，兩個(gè)半圓弧，上下各一個(gè)。整形后的外徑就達(dá)到了成品的尺寸要求。壁厚就以來(lái)料的壁厚進(jìn)行控制。彎頭和管子的壁厚公差都是相同的，均為12.5%，在推制過(guò)程中，正常情況下壁厚不應(yīng)當(dāng)發(fā)生變化，但如果因?yàn)楣ぞ咴?，有的地方?huì)發(fā)生減壁現(xiàn)象，所以一般提料時(shí)，壁厚要加一些余量，如果彎頭是8.18mm的壁厚，一般都提8.5mm左右的管子，防止在推制時(shí)由于局部減厚而超差。整好形后，彎頭的外徑和壁厚尺寸都打到了要求、下面就進(jìn)行精整工序，經(jīng)過(guò)噴砂處理，把彎頭內(nèi)外表面的氧化鐵皮出掉，把兩端坡口處理以便于焊接。在經(jīng)過(guò)檢查，打字，噴漆，包裝后等工序，就可以出廠。</strong></span></p> <p> </p> <p> </p> <p> </p> <p> </p> <div id="btrxftx" class="float_c news-page fs_14"> <div id="j5rnlrh" class="f_l"> 上一篇：<a href='/hyxw/2010.html'>鋼管坡口機(jī)的組成結(jié)構(gòu)介紹</a> </div> <div id="rfbpbpl" 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