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href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設(shè)備</a>?<a href="http://www.cdcfah.com/cp/second-jxjxysb_famenti/">閥門</a>?<a href="http://www.cdcfah.com/cp/third-famenti_diefakna/">蝶閥</a>?福建鋼廠真空管道蝶閥制造廠家頂耕國際貿(mào)易供應(yīng)</p><div id="xheg3nu" class="leftbox clearfix"><h1>福建鋼廠真空管道蝶閥制造廠家頂耕國際貿(mào)易供應(yīng)</h1><div id="jyqxutv" class="proBig"><div id="ixum327" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/3079327.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="88ljv7m" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/3079327.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="v3nulaw" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>福建鋼廠真空管道蝶閥制造廠家</p><p><span>***更新：</span>2020-05-25 09:43:11</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="uwy2mtv" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">頂耕國際貿(mào)易（上海）有限公司</a></p><p><span>聯(lián)系人：</span>查劍來</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: </span>021-61637356</p><p><span>地址: </span>大葉公路5225號1幢2370室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="p7prd7l" class="page-proshow02"><p class="title">詳細說明</p><div id="zgdaxwy" class="box"><p><p> 氣動蝶閥的軟密封：密封的兩側(cè)一側(cè)是金屬材料,另一側(cè)是有彈性的非金屬材料的被稱為軟密封.這種密封的密封性能較好,但不耐高溫,易磨損,機械性較差.如:鋼+橡膠;鋼+四氟聚乙烯;等.軟密封座采用具有一定強度、硬度和耐溫性能的非金屬材料制作，密封性能好，可以作到零泄漏，但壽命和對溫度的適應(yīng)性比較差。氣動蝶閥的硬密封：采用金屬制作，福建鋼廠真空管道蝶閥制造廠家，密封性能相對比較差，盡管有制造商宣稱可以作到零泄漏。軟密封對一部分有腐蝕性的物料是不能滿足工藝要求的，硬密封可以解決！這兩種密封可以相互補充的，就密封性而言軟密封相對較好，但是現(xiàn)在硬密封的密封性也能夠滿足相應(yīng)的要求！軟密封的優(yōu)點是密封性能好，缺點是容易老化、磨損、使用壽命短。硬密封使用壽命長，但是密封性相對比軟密封差。其結(jié)構(gòu)上的區(qū)別主要有以下幾點：1、結(jié)構(gòu)上的區(qū)別：軟密封蝶閥多為中線型硬密封多為單偏心、雙偏心、三偏心蝶閥2、耐溫：軟密封用于常溫環(huán)境。硬密封可用于低溫，福建鋼廠真空管道蝶閥制造廠家、常溫、高溫等環(huán)境3、壓力：軟密封低壓-常壓，福建鋼廠真空管道蝶閥制造廠家，硬密封還可以使用于中高壓等工況4、密封性能:軟密封和三偏心硬密封蝶閥密封性能比較好，三偏心蝶閥在高壓高溫環(huán)境下可以保持良好的密封。鑒于以上特點。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥制造廠家" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494101563/3079327.png"></div><p> 閥門密封是整個閥門中**重要的組成部分，其主要目的就是防止泄露，閥門密封座也叫密封圈，它是直接接與管路內(nèi)介質(zhì)接觸，并且阻止介質(zhì)流通的一個組織。閥門在使用中，管道內(nèi)有各種不同的介質(zhì)，如液體、氣體、油品、腐蝕性的介質(zhì)等等，而不同的閥門的密封件，使用的地方也不一樣，能夠適應(yīng)各種不同的介質(zhì)。那么，閥門密封件材料主要可以分成兩大類，即為金屬材料和非金屬材料，非金屬密封一般多用于常溫常壓的管道，而金屬密封而使用范圍則比較廣，可用于高溫高壓！下面就簡單介紹一下各類密封材料的使用條件，以及常用的閥門類型。1、合成橡膠合成橡膠的耐油、耐溫、耐腐蝕等綜合性能優(yōu)于天然橡膠。一般合成橡膠的使用溫度t≤150℃，天然橡膠t≤60℃，橡膠用于公稱壓力PN≤1MPa的截止閥、閘閥、隔膜閥、蝶閥、止回閥、夾管閥等閥門的密封。2、尼龍尼龍具有摩擦系數(shù)小、耐腐蝕性好等特點。尼龍多用于溫度t≤90℃、公稱壓力PN≤32MPa的球閥、截止閥等。3、聚四氟乙烯聚四氟乙烯多用于溫度t≤232℃、公稱壓力PN≤、閘閥、球閥等。4、鑄鐵鑄鐵用于溫度t≤100℃、公稱壓力PN≤、煤氣和油類用的閘閥、截止閥、旋塞閥等。5、巴氏合金巴氏合金用于溫度t-70~150℃、公稱壓力PN≤。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥制造廠家" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737496894532/5616452.png"></div><p> 閥門密封圈材料使用條件非金屬類:1聚四氟乙烯,代號F聚四氟乙烯多用于溫度t≤232℃、公稱壓力PN≤、閘閥、球閥等。2合成橡膠,代號X合成橡膠的耐油、耐溫、耐腐蝕等綜合性能優(yōu)于天然橡膠。一般合成橡膠的使用溫度t≤150℃，天然橡膠t≤60℃，橡膠用于公稱壓力PN≤1MPa的截止閥、閘閥、隔膜閥、蝶閥、止回閥、夾管閥等閥門的密封。3尼龍,代號N尼龍具有摩擦系數(shù)小、耐腐蝕性好等特點。尼龍多用于溫度t≤90℃、公稱壓力PN≤32MPa的球閥、截止閥等。金屬類:4巴氏合金,代號B巴氏合金用于溫度t-70~150℃、公稱壓力PN≤。5鉻不銹鋼,代號H鉻不銹鋼常用牌號有2Cr13、3Cr13經(jīng)調(diào)質(zhì)處理，耐腐蝕性能好。常用于溫度t≤450℃、公稱壓力PN≤32MPa的水、蒸汽和石油等介質(zhì)的閥門上。6鉻鎳鈦不銹鋼,代號R鉻鎳鈦不銹鋼常用牌號為1Cr18Ni9ti，其耐腐性、耐沖蝕性和耐熱性能較好。適用于溫度t≤600℃、公稱壓力PN≤、硝酸等介質(zhì)中，用于截止閥、球閥等。7銅合金。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="福建鋼廠真空管道蝶閥制造廠家" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737494296875/9390800.png"></div></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/36182.html</p></div></div></div></div></div><div id="xme3qs3" class="page-right twoColRt"><div id="f7urya7" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="zognk8l" class="recomPic likePro"><a 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