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href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="0a7mdul" class="twoCol"><div id="yjmtwpv" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_jxjxysb/">機械及行業(yè)設備</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>?廣東煉鋼廠真空管道蝶閥廠家供應頂耕國際貿(mào)易供應</p><div id="0rzq7bm" class="leftbox clearfix"><h1>廣東煉鋼廠真空管道蝶閥廠家供應頂耕國際貿(mào)易供應</h1><div id="mybuzew" class="proBig"><div id="tflcrw5" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129736101689453/4021167.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="g5s23h5" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129736101689453/4021167.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mwphmpg" 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)品關鍵詞：</span>廣東煉鋼廠真空管道蝶閥廠家供應,真空管道蝶閥</p><p><span>***更新：</span>2020-10-24 16:55:27</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="5qwa500" 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="t5yjctz" class="page-proshow02"><p class="title">詳細說明</p><div id="o0jmshm" class="box"><p><p> 一：軟硬密封蝶閥的區(qū)別： </p> <p> <br /> </p> <p> 硬密封蝶閥：密封副的兩側(cè)均是金屬材料或較硬的其它材料的被稱為"硬密封".這種密封的密封性能較差,但耐高溫,抗磨損,機械性能好.如:鋼+鋼;鋼+銅;鋼+石墨;鋼+合金鋼;(這里的鋼也可能是鑄鐵,鑄鋼,合金鋼也可能是堆焊,噴涂的合金). </p> <p> <br /> </p> <p> 硬密封使用壽命長，但是密封性相對比軟密封差。 </p> <p> <br /> </p> <p> 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。 </p> <p> <br /> </p> <p> 軟密封：密封副的兩側(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[wiki]聚乙烯[/wiki];等轉(zhuǎn)子泵. </p> <p> <br /> </p> <p> 二：密封蝶閥特點： </p> <p> <br /> </p> <p> 1、蝶板密封面采用堆焊鈷基硬質(zhì)合金，密封面耐磨損，使用壽命長 </p> <p> <br /> </p> <p> 2、密封圈選用不銹鋼制作，具有金屬硬密封和彈性密封的雙重優(yōu)點，無論在低溫和高溫的情況下，均具有優(yōu)良的密封性能，具有耐腐蝕，廣東煉鋼廠真空管道蝶閥廠家供應,使用壽命長等特點 </p> <p> <br /> </p> <p> 3、硬密封蝶閥具有雙向密封功能，安裝時不受介質(zhì)流向的限制，也不受空間位置的影響，可在任何方向安裝。 </p> <p> <br /> </p> <p> 4，廣東煉鋼廠真空管道蝶閥廠家供應、大規(guī)格蝶板采用絎架結(jié)構，強度高，過流面積大，廣東煉鋼廠真空管道蝶閥廠家供應，流阻小頂耕國際貿(mào)易（上海）有限公司為廠家授權代理，產(chǎn)品豐富，服務到位！廣東煉鋼廠真空管道蝶閥廠家供應</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東煉鋼廠真空管道蝶閥廠家供應,真空管道蝶閥" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129736101689453/4021167.png"></div><p> 對閥門密封性能的要求，要防止泄漏角度出發(fā)。根據(jù)其泄漏的不同部位和程度，導致閥門的泄漏情況不同，因此，需要提出不同的防漏措施。1閥門密封性原理密封就是防止泄漏，那么閥門密封性原理也是從防止泄漏研究的。造成泄漏的因素主要有兩個，一個是影響密封性能的**主要的因素，即密封副之間存在著間隙，另一個則是密封副的兩側(cè)之間存在著壓差。閥門密封性原理也是從液體的密封性、氣體的密封性、泄漏通道的密封原理和閥門密封副等四個方面來分析的。01液體的密封性液體的密封性是通過液體的粘度和表面張力來進行。當閥門泄漏的毛細管充滿氣體的時候，表面張力可能對液體進行排斥，或者將液體引進毛細管內(nèi)。這樣就形成了相切角。當相切角小于90°的時候，液體就會被注入毛細管內(nèi)，這樣就會發(fā)生泄漏。發(fā)生泄漏的原因在于介質(zhì)的不同性質(zhì)。用不同介質(zhì)做試驗，在條件相同的情況下，會得出不同的結(jié)果?？梢杂盟?，用空氣或用煤油等。而當相切角大于90°時，也會發(fā)生泄漏。因為與金屬表面上的油脂或蠟質(zhì)薄膜有關系。一旦這些表面的薄膜被溶解掉，金屬表面的特性就發(fā)生了變化，原來被排斥的液體，就會侵濕表面，發(fā)生泄漏。針對上述情況，根據(jù)泊松公式。山西鋼廠真空管道蝶閥重量頂耕國際貿(mào)易（上海）有限公司是一家集研發(fā)、制造、銷售、服務于一體的綜合性真空閥業(yè)公司。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東煉鋼廠真空管道蝶閥廠家供應,真空管道蝶閥" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737719785157/327671.jpg"></div><p> 閥門非金屬密封件材料有： </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 1.合成橡膠 </p> <p> <br /> </p> <p> 合成橡膠與天然橡膠相比，有更好的耐油、耐溫、耐酸堿性能。一般合成橡膠的使用溫度≤150℃，天然橡膠≤60℃ </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 2.聚四氟乙烯 </p> <p> <br /> </p> <p> 聚四氟乙烯具有良好的耐腐蝕性，多用于溫度≤232℃、公稱壓力≤64公斤。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 3.尼龍 </p> <p> <br /> </p> <p> 尼龍的優(yōu)勢在于摩擦系數(shù)小、耐腐蝕性好。這種材料多用于溫度≤90℃、公稱壓力≤32公斤的球閥、截止閥密封材料中。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 閥門金屬密封件材料有： </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 1.灰鑄鐵 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 灰鑄鐵可以用于溫度在-15~200℃之間、公稱壓力≤16公斤的蝶閥、閘閥、截止閥、旋塞閥等中的密封材料。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 2.球墨鑄鐵 </p> <p> <br /> </p> <p> 球墨鑄鐵作為密封材料可以用在溫度在-30~350℃之間，公稱壓力≤40公斤的蝶閥、閘閥、止回閥，球閥中。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 3.銅合金 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 銅合金常用材料有6-6-3錫青銅和58-2-2錳黃銅等。銅合金耐磨性好，適用于溫度≤200℃、公稱壓力≤16公斤的水和蒸汽中 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 4.鉻不銹鋼 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 鉻不銹鋼常用的有2Cr13、3Cr13，耐腐蝕性能好。常用于溫度≤450℃、公稱壓力≤32公斤的水、蒸汽和石油等介質(zhì)的閥門上。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 5.鉻鎳鈦不銹鋼 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 鉻鎳鈦不銹鋼常用的有1Cr18Ni9ti，該種材質(zhì)擁有良好的耐腐性、耐沖蝕性和耐熱性能。適用于溫度≤600℃、公稱壓力≤60公斤的蒸汽、硝酸等介質(zhì)中 </p><p> 德國FSA FDEK系列真空主閥的結(jié)構形式為金屬硬密封碟閥，在容許的溫度和壓力范圍內(nèi)，可對介質(zhì)的流通實現(xiàn)關斷和調(diào)控。標準產(chǎn)品口徑從DN800到DN2000，也可接受其他尺寸要求。目前在國內(nèi)鋼廠，特別是在RH精煉工藝中應用十分很多，市場占有率高達97%，并得到用戶一致認可。 </p> <p> ? 工況條件如下： </p> <p> 介質(zhì)：含灰塵氣體 </p> <p> 溫度：≤350℃ </p> <p> 工作壓差：≤1bar </p> <p> 閥門開閉時間：約30S </p> <p> 液壓站防護等級：IP55 </p> <p> 電控柜防護等級：IP67 </p> <p> 密封等級：DIN EN 12266 rate A(零泄漏) </p> <p> <br /> </p> <p> <br /> 頂耕國際貿(mào)易（上海）有限公司專業(yè)銷售真空閥門產(chǎn)品,公司具有良好的市場信譽,專業(yè)的售后和技術服務團隊！</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="廣東煉鋼廠真空管道蝶閥廠家供應,真空管道蝶閥" src="http://tyunfile.71360.com/WaterMark/UploadFile/shdign/637129737493554688/8379117.png"></div><p> 主要分類 </p> <p> 按驅(qū)動方式分 </p> <p> (1)電動蝶閥 </p> <p> (2)氣動蝶閥 </p> <p> (3)液動蝶閥 </p> <p> (4)手動蝶閥 </p> <p> 按結(jié)構形式分： </p> <p> (1)中心密封蝶閥 </p> <p> (2)單偏心密封蝶閥 </p> <p> (3)雙偏心密封蝶閥 </p> <p> (4)三偏心密封蝶閥 </p> <p> 密封面材質(zhì)分： </p> <p> (1)軟密封蝶閥。 </p> <p> 1)密封副由非金屬軟質(zhì)材料對非金屬軟質(zhì)材料構成。 </p> <p> 2)密封副由金屬硬質(zhì)材料對非金屬軟質(zhì)材料構成。 </p> <p> (2)金屬硬密封蝶閥。密封副由金屬硬質(zhì)材料對金屬硬質(zhì)材料構成。 </p> <p> 按工作壓力分： </p> <p> (1)真空蝶閥。工作壓力低于標堆大氣壓的蝶閥。 </p> <p> (2)低壓蝶閥。公稱壓力PN<1．6MPa的蝶閥。 </p> <p> (3)中壓蝶閥。公稱壓力PN為2．5--6．4MPa的蝶閥。 </p> <p> (4)高壓蝶閥。公稱壓力PN為10.0--80．0MPa的蝶閥。 </p> <p> (5)超高壓蝶閥。公稱壓力PN>100MPa的蝶閥。 </p> <p> 按連接方式分： </p> <p> 1、對夾式蝶閥 </p> <p> 對夾式蝶閥的蝶板安裝于管道的直徑方向。閥門則呈全開狀態(tài)。 </p> <p> 對夾式蝶閥結(jié)構簡單、體積小、重量輕。蝶閥有彈性密封和金屬密封兩種密封型式。彈性密封閥門，密封圈可以鑲嵌在閥體上或附在蝶板周邊。 </p> <p> 2、法蘭式蝶閥 </p> <p> 法蘭式蝶閥為垂直板式結(jié)構，閥桿為整體式金屬硬密封閥門的密封圈 </p> <p> 為柔性石墨板與不銹鋼板復合式結(jié)構，安裝在閥體上，蝶板密封面堆焊不銹鋼。軟密封閥門的密封圈為丁腈橡膠材質(zhì)，是安裝在蝶板上的。 </p> <p> 3、凸耳式蝶閥 </p> <p> 4、焊接式蝶閥頂耕國際貿(mào)易（上海）有限公司“以科技為本，以質(zhì)量求生存，以信譽求市場，以管理求效益”為企業(yè)方針。北京專業(yè)真空管道蝶閥制造廠家</p><p style="text-indent:25px">頂耕國際貿(mào)易（上海）有限公司為客戶提供更好的解決方案、創(chuàng)造更好的效益，我們期待與您合作共贏！廣東煉鋼廠真空管道蝶閥廠家供應</p><p> 墊片不應落地。密封圈連結(jié)處的泄漏原因：1、密封圈輾壓不嚴；2、密封圈與本體焊接，堆焊質(zhì)量差；3、密封圈連接螺紋、螺釘、壓圈松動；4、密封圈連接而被腐蝕。維護方法：1、密封輾壓處泄漏應注膠粘劑再輾壓固定；2、密封圈應按施焊規(guī)范重新不解之補焊。堆焊處無法補焊時應***原堆焊和加工；3、卸下螺釘、壓圈清洗，更換損壞的部件，研磨密封與連接座密合面，重新裝配。對腐蝕損壞大較大的部件，可用焊接、粘接等方法修復；4、密封圈連接面被腐蝕，可用研磨，粘接等方法修復，無法修復時用應更換密封圈。關閉件脫落產(chǎn)生泄漏原因：1、操作不良，使關閉件卡死或超過上死點，連接處損壞斷裂；2、關閉件連接不牢固，松勁而脫落；3、選用連接件材質(zhì)不對，經(jīng)不起介質(zhì)的腐蝕和機械的磨損。維護方法：1、正確操作，關閉閥門不能用力過大，開啟閥門不能超過上死點，閥門全開后，手輪應倒轉(zhuǎn)少許；2、關閉件與閥桿連接應牢固，螺紋連接處應有止退件；3、關閉件與閥桿連接用的緊固件應經(jīng)受住介質(zhì)的腐蝕，并有一定的機械強度和耐磨性能。廣東煉鋼廠真空管道蝶閥廠家供應</p><p style="text-indent:25px">頂耕國際貿(mào)易（上海）有限公司總部位于大葉公路5225號1幢2370室，是一家從事貨物進出口及技術進出口業(yè)務，金屬材料、五金交電、機電設備、電子產(chǎn)品儀器儀表、建筑材料、裝飾材料、塑料制品、辦公設備、工藝禮品、通訊設備、化工原料及產(chǎn)品（除危險化學品、監(jiān)控化學品、民用物品、易制毒化學品）、汽年配件、皮革制品、紙制品、服裝、鞋帽、針紡織品、日用百貨、文具用品、珠寶首你、家屋用品、家具批發(fā)、零售，機械設備制造、加工（以上限分支機經(jīng)營）、批發(fā)、零售，商務信息咨詢。的公司。頂耕貿(mào)易擁有一支經(jīng)驗豐富、技術創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供振動給料機，電動缸，切磚機，真空主閥。頂耕貿(mào)易不斷開拓創(chuàng)新，追求出色，以技術為先導，以產(chǎn)品為平臺，以應用為重點，以服務為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務。頂耕貿(mào)易始終關注機械及行業(yè)設備市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1691931.html</p></div></div></div></div></div><div id="puns02m" class="page-right twoColRt"><div id="f5x5ea5" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="wasl2gh" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" 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