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clearfix"><h1>四川鋼廠真空管道蝶閥泄露頂耕國(guó)際貿(mào)易供應(yīng)</h1><div id="uj84gbi" class="proBig"><div id="jnk3k8g" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/8647630.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mgdx8zb" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/8647630.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="j8djqkw" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>四川鋼廠真空管道蝶閥泄露</p><p><span>***更新：</span>2020-05-27 11:31:42</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8barik8" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國(guó)際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來(lái)</p><p><span>郵箱: </span></p><p><span>電話: </span>18521036598</p><p><span>傳真: </span>021_61637356</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>021-61637356</p><p><span>地址: </span>大葉公路5225號(hào)1幢2370室</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="eiaxeg7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="k7zwtvx" class="box"><p><p> 蝶閥(英文：butterfly valve)是指關(guān)閉件(閥瓣或蝶板)為圓盤，圍繞閥軸旋轉(zhuǎn)來(lái)達(dá)到開(kāi)啟與關(guān)閉的一種閥，在管道上主要起切斷和節(jié)流用。蝶閥啟閉件是一個(gè)圓盤形的蝶板，在閥體內(nèi)繞其自身的軸線旋轉(zhuǎn)，從而達(dá)到啟閉或調(diào)節(jié)的目的，四川鋼廠真空管道蝶閥泄露。蝶閥全開(kāi)到全關(guān)通常是小于90° ，蝶閥和蝶桿本身沒(méi)有自鎖能力，為了蝶板的定位，要在閥桿上加裝蝸輪減速器。采用蝸輪減速器，不僅可以使蝶板具有自鎖能力，使蝶板停止在任意位置上，還能改善閥門的操作性能。 </p> <p> 工業(yè)**蝶閥的特點(diǎn)能耐高溫，適用壓力范圍也較高，閥門公稱通徑大，四川鋼廠真空管道蝶閥泄露，閥體采用碳鋼制造，閥板的密封圈采用金屬環(huán)代替橡膠環(huán)，四川鋼廠真空管道蝶閥泄露。大型高溫蝶閥采用鋼板焊接制造，主要用于高溫介質(zhì)的煙風(fēng)道和煤氣管道。 </p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川鋼廠真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/8647630.png"></div><p> 密封面是閥門**關(guān)鍵的工作面，密封面質(zhì)量的好壞關(guān)系到閥門的使用壽命，通常密封面材料要考慮耐腐蝕，耐擦傷，耐沖蝕，抗氧化等因素。通常分兩大類：（一）軟質(zhì)材料1、橡膠（包括丁睛橡膠，氟橡膠等）2、塑料（聚四氟乙烯，尼龍等）（二）硬密封材料1、銅合金（用于低壓閥門）2、鉻不銹鋼（用于普通高中壓閥門）3、司太立合金（用于高溫高壓閥門及強(qiáng)腐蝕閥門）4、鎳基合金（用于腐蝕性介質(zhì)）閥桿材料閥桿在閥門開(kāi)啟和關(guān)閉過(guò)程中，承受拉、壓和扭轉(zhuǎn)作用力，并與介質(zhì)直接接觸，同時(shí)和填料之間還有相對(duì)的摩擦運(yùn)動(dòng)，因此閥桿材料必須保證在規(guī)定溫度下有足夠的強(qiáng)度和沖擊韌性，有一定的耐腐蝕性和抗擦傷性，以及良好的工藝性。常用的閥桿材料有以下幾種。一、碳素鋼用于低壓和介質(zhì)溫度不超過(guò)300℃的水、蒸汽介質(zhì)時(shí)，一般選用A5普通碳素鋼。用于中壓和介質(zhì)溫度不超過(guò)450℃的水、蒸汽介質(zhì)時(shí)，一般選用35質(zhì)量碳素鋼。二、合金鋼用于中壓和高壓，介質(zhì)溫度不超過(guò)450℃的水、蒸汽、石油等介質(zhì)時(shí)，一般選用40Cr（鉻鋼）。用于高壓、介質(zhì)溫度不超過(guò)540℃的水、蒸汽等介質(zhì)時(shí)，可選用38CrMoALA滲氮鋼。用于高壓、介質(zhì)溫度不超過(guò)570℃的蒸汽介質(zhì)時(shí)，一般選用25Cr2MoVA鉻鉬釩鋼。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川鋼廠真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737493554688/8379117.png"></div><p> 不銹鋼870℃。其中鉛耐壓能力較差，鋁可耐64千克/平方厘米，其他材料可耐高壓。(7)金屬異性墊圈：透鏡墊圈：有自緊作用，使用于高壓閥門。橢圓形墊圈：也屬于高壓自緊墊圈。錐面雙墊圈：用于高壓內(nèi)自慎密封。此外，還有方形、菱形、三角形、齒形、燕尾形、B形、C形等，一般只高中壓閥門中使用。(8)金屬包皮墊圈：金屬既有***耐溫耐壓性能，又有***彈性。包皮材料有鋁、銅、低碳鋼、不銹鋼、蒙乃爾合金等。里面填充材料有石棉、聚四氟乙烯、玻璃纖維等。(9)波形墊圈：具有壓緊力小，密封效果好特點(diǎn)。常采用金屬與非金屬組合形式。(10)環(huán)繞糾纏墊圈：是把很薄金屬帶和非金屬帶緊貼一起，環(huán)繞糾纏成多層圓形，斷面呈海浪狀，有很好彈性和密封性。金屬帶可用08鋼、0Cr13、1Cr13、2Cr13、1Cr18Ni9Ti、銅、鋁、鈦、蒙乃爾合金等建造。非金屬帶材料有石棉、聚四氟乙烯等。以上，講述密封墊圈性能時(shí)，列舉了一些數(shù)字。必需說(shuō)明，這些數(shù)字跟法蘭形式、介質(zhì)情況和安裝修理技術(shù)等有緊密親密關(guān)系，可以跨越，達(dá)不到，耐壓和耐溫性能，也是相互轉(zhuǎn)化，例如溫度高了，耐壓能力往往下降，這些細(xì)微問(wèn)題，只能實(shí)踐中體味。四、閥門密封材料閥門密封材料是閥門密封的重要組成部分。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="四川鋼廠真空管道蝶閥泄露" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737718496094/8657721.jpg"></div></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/57983.html</p></div></div></div></div></div><div id="wldf3q7" class="page-right twoColRt"><div id="pj2xtvs" class="box01 margin10 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