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class="fs_20 txt_c news-head-p">中頻推制機生產(chǎn)彎頭管件的工藝</p> <h3> <img src="/uploads/180329/1-1P329151T4445.jpg" style="margin-right: 10px; float: left; width: 180px; height: 180px;" /></h3> <div> </div> <div> <h3> <span style="font-size:36px;">中頻推制機生產(chǎn)彎頭管件的工藝</span></h3> </div> <div> <span style="font-size:22px;"><a href="http://www.klxtx.com">中頻推制機</a>在生產(chǎn)彎頭管件采用熱推彎頭成形工藝是采用常用彎頭推制機、芯模和加熱裝置，精密無縫鋼管使套在模具上的坯料在推制機的推動下向前運動，在運動中被加熱、擴徑并彎曲成形的過程。 熱推彎頭的變形特點是根據(jù)金屬材料塑性變形前后體積不變的規(guī)律確定管坯直徑，所采用的管坯直徑小于彎頭直徑，通過芯模控制坯料的變形過程，使內(nèi)弧處被壓縮 的金屬流動，補償?shù)揭驍U徑而減薄的其它部位，從而得到壁厚均勻的彎頭。</span></div> <div> <span style="font-size:22px;">熱推彎頭成形工藝具有外形美觀、壁厚均勻和連續(xù)作業(yè)，適于大批量生產(chǎn)的特點，因而成為碳鋼、合金鋼彎頭的主要成形方法，并也應(yīng)用在某些規(guī)格的不銹鋼彎頭的成形中。</span></div> <div> <span style="font-size:22px;">成形過程的加熱方式有中頻或高頻感應(yīng)加熱（加熱圈可為多圈或單圈）、火焰加熱和反射爐加熱，采 用何種加熱方式視成形產(chǎn)品要求和能源情況決定。</span></div> <div> <span style="font-size:22px;">大口徑直縫焊管主要生產(chǎn)流程說明</span></div> <div> <span style="font-size:22px;">板探：用來制造大口徑埋弧焊直縫鋼管的鋼板進入生產(chǎn)線后，首先進行全板超聲波檢驗；</span></div> <div> <span style="font-size:22px;">銑邊：通過銑邊機對鋼板兩邊緣進行雙面銑削，使之達(dá)到要求的板寬、板邊平行度和坡口形狀；</span></div> <div> <span style="font-size:22px;">預(yù)彎邊：利用預(yù)彎機進行板邊預(yù)彎，使板邊具有符合要求的曲率；</span></div> <div> <span style="font-size:22px;">成型：在成型機上首先將預(yù)彎后的鋼板的一半經(jīng)過多次步進沖壓，壓成"J"形，再將鋼板的另一半同樣彎曲，壓成"C"形，中頻推制機形成開口的"O"形</span></div> <div> <span style="font-size:22px;">預(yù)焊：使成型后的直縫焊鋼管合縫并采用氣體保護焊進行連續(xù)焊接；</span></div> <div> <span style="font-size:22px;">內(nèi)焊：采用縱列多絲埋弧焊在直縫鋼管內(nèi)側(cè)進行焊接；</span></div> <div> <span style="font-size:22px;">外焊：采用縱列多絲埋弧焊在直縫埋弧焊鋼管外側(cè)進行焊接；</span></div> <div> <span style="font-size:22px;">超聲波檢驗：高壓鍋爐管價格對直縫焊鋼管內(nèi)外焊縫及焊縫兩側(cè)母材進行推制機的檢查；</span></div> <div> <span style="font-size:22px;">X射線檢查Ⅰ：對內(nèi)外焊縫進行X射線工業(yè)電視檢查，采用圖象處理系統(tǒng)可以探傷的靈敏度；</span></div> <div> <span style="font-size:22px;">擴徑：對埋弧焊直縫鋼管全長進行擴徑以提高鋼管的尺寸精度，并改善鋼管內(nèi)應(yīng)力的分布狀態(tài)；</span></div> <div> <span style="font-size:22px;">水壓試驗：在水壓試驗機上對擴徑后的鋼管進行逐根檢驗以鋼管達(dá)到標(biāo)準(zhǔn)要求的試驗壓力，該機具有自動記錄和儲存功能；</span></div> <div> <span style="font-size:22px;">倒棱：將檢驗合格后的鋼管進行管端加工，達(dá)到要求的管端坡口尺寸；</span></div> <div> <span style="font-size:22px;">超聲波檢驗Ⅱ：再次逐根進行超聲波檢驗以檢查直縫焊鋼管在擴徑、水壓后可能產(chǎn)生的缺陷；</span></div> <div> <span style="font-size:22px;">X射線檢查Ⅱ：對擴徑和水壓試驗后的鋼管進行X射線工業(yè)電視檢查和管端焊縫拍片；</span></div> <div> <span style="font-size:22px;">管端磁粉檢驗：進行此項檢查以發(fā)現(xiàn)管端缺陷；</span></div> <div> <span style="font-size:22px;">防腐和涂層：合格后的鋼管根據(jù)用戶要求進行防腐和涂層。</span></div> <div> <span style="font-size:20px;"><a href="http://www.klxtx.com">中頻推制機</a>在生產(chǎn)制作彎頭管件的過程中是目前先進的設(shè)備制作，歡迎需要的客戶咨詢訂購！</span></div> <div id="o2mso4i" class="float_c news-page fs_14"> <div id="eaa4ma2" class="f_l"> 上一篇：<a href='/hyxw/2456.html'>中頻彎頭機可以準(zhǔn)確的生產(chǎn)各種角度彎頭</a> </div> <div id="4k2gawe" class="f_r"> 下一篇：<a href='/hyxw/2458.html'>彎頭推制機的規(guī)格和特點</a> </div> </div> </div> </div> </div> </div> <div id="2e42ic2" class="footer"> <div 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