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clearfix"><h1>河南沖水閥閥座檢修來(lái)電咨詢上海含商建設(shè)工程供應(yīng)</h1><div id="xktfmde" class="proBig"><div id="cfhegho" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408581888252586/135538.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ftqm23o" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhanshang/637408581888252586/135538.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vikmjac" 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>河南沖水閥閥座檢修,閥座</p><p><span>***更新：</span>2021-01-02 01:18:15</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="d7kprct" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海含商建設(shè)工程有限公司</a></p><p><span>聯(lián)系人：</span>朱瑩</p><p><span>郵箱: </span>Irene_zy516@163.com</p><p><span>電話: </span>13918191286</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://shhanshang.shop.88360.com</p><p><span>手機(jī): </span>021-58210069</p><p><span>地址: </span>上海市崇明區(qū)新河鎮(zhèn)新申路921弄2號(hào)L區(qū)228室(上海富盛經(jīng)濟(jì)開(kāi)發(fā)區(qū))</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="o9u7tco" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="7pqsevn" class="box"><p><p style="text-indent:25px">閥座可長(zhǎng)期工作在-250~260℃之間，可承受5MPa載荷，密度為22g/cm3，導(dǎo)熱系數(shù)為025W/(mc)，線膨脹系數(shù)為(10~15)×10-5/℃，抗拉強(qiáng)度為10~30MPa，彈性模量為400MPa，抗壓強(qiáng)度為710MPa，彎曲強(qiáng)度為14MPa。能耐濃酸、濃堿、強(qiáng)氧化劑(如王水)和任何濃度沸騰的氫氟酸等介質(zhì)。聚三氟氯乙烯：聚三氟氯乙烯(PCTFE-F3)具有優(yōu)良的耐寒性，強(qiáng)度和硬度高，尺寸穩(wěn)定性好，無(wú)冷流傾向。使用溫度在-195~120℃，密度為21g/cm3，導(dǎo)熱系數(shù)為0058W/(mc)，線膨脹系數(shù)為(415~710)×10-5/℃，河南沖水閥閥座檢修，河南沖水閥閥座檢修，河南沖水閥閥座檢修，抗拉強(qiáng)度為35~40MPa，彈性模量為1300MPa，抗壓強(qiáng)度為50~70MPa，彎曲強(qiáng)度為70MPa。閥座壓縮閥座密封應(yīng)力使材料彈性變形而擠進(jìn)配用的金屬零件的粗糙表面。河南沖水閥閥座檢修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南沖水閥閥座檢修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408581888252586/135538.png"></div><p style="text-indent:25px">閥座的選用說(shuō)明：閥座的應(yīng)用范圍很廣，在蒸汽、壓縮空氣、工業(yè)用氣、水、油和許多其他液體介質(zhì)的設(shè)備和管路上均可使用，介質(zhì)流經(jīng)閥座出口處的量，一般用質(zhì)量流量或體積流量表示；波紋管直接作用式閥座適用于低壓、中小口徑的蒸汽介質(zhì)；薄膜直接作用式閥座適用于中低壓、中小口徑的空氣、水介質(zhì)；先導(dǎo)活塞式閥座，適用于各種壓力、各種口徑、各種溫度的蒸汽、空氣和水介質(zhì)，若用不銹耐酸鋼制造，可適用于各種腐蝕性介質(zhì)；先導(dǎo)波紋管式閥座，適用于低壓、中小口徑的蒸汽、空氣等介質(zhì)；山東閥桿閥座檢修隨著防化學(xué)腐蝕的合成橡膠在閥座上的應(yīng)用，閥座的性能得以提高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南沖水閥閥座檢修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637444325321836105/4271419.png"></div><p style="text-indent:25px">上海含商建設(shè)工程有限公司小編向大家介紹幾種橡膠閥座：乙丙橡膠閥座適用于濃堿，低壓蒸汽，熱水，冷水，酒精，禁用各種油脂和強(qiáng)酸。氯丁橡膠閥座適用于水，海水，濃度在20%以下的稀酸，禁用食油，磷酸等芳香烴高的油類。丁晴橡膠閥座適用于水，海水，機(jī)油，潤(rùn)滑油，酒精，天然氣，禁用汽油，沒(méi)有等芳香烴高的油類。耐磨橡膠閥座適用于泥漿，煤漿，水泥粉，煤粉。氟橡膠閥座適用于汽油，燃油，無(wú)機(jī)酸，動(dòng)物油，嚴(yán)禁用于蒸汽。聚四氟乙烯塑料閥座適用于一切酸堿腐蝕性介質(zhì)和食品。</p><p style="text-indent:25px">固定球閥彈簧組彈性閥座是一種涉及高、低和普通溫度的密封結(jié)構(gòu)，應(yīng)用十分普遍。三種形式的密封結(jié)構(gòu)特點(diǎn)各不相同，在應(yīng)用時(shí)必須選擇正確。密封壓比受受壓面積壓差推動(dòng)力、預(yù)緊彈簧彈力及滑動(dòng)摩擦力影響。同時(shí)受到受壓面積壓差推動(dòng)力影響較大。然而，兩受壓面中徑尺寸一般相差不大。所以設(shè)計(jì)時(shí)必須進(jìn)行精確的計(jì)算。（1）固定球閥彈簧組彈性閥座的閥體接觸面中徑d1和球體接觸面中徑d2的大小關(guān)系決定了閥門(mén)的三種密封形式。（2）固定球閥彈簧組彈性閥座的密封比壓（即密封的可靠性）主要取決于閥體接觸面中徑d1和球體接觸面中徑d2的比例關(guān)系。（3）對(duì)三種密封結(jié)構(gòu)來(lái)說(shuō)，閥前閥座密封，可以使用在壓力P≤10MPa的腐蝕和液化氣體中以及閥門(mén)通徑較大的場(chǎng)合；閥后閥座密封，通常使用于壓力P≥16MPa的80～100通徑的閥門(mén)中；雙面密封，特別使用于危險(xiǎn)的對(duì)密封要求高的場(chǎng)所。閥門(mén)一旦上游密封意外失效產(chǎn)生泄漏,下游閥座實(shí)現(xiàn)密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南沖水閥閥座檢修,閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408581913281946/7371774.png"></div><p style="text-indent:25px">閥座主要材料性能耐熱性從大到小是PTFE260°C以上>PFA260°C>FEP200°C>>ETFE150°C。PTFE:(聚四氟乙烯)不粘涂料可以在260°C連續(xù)使用，具有較高使用溫度0-300C，極低的摩擦系數(shù)、良好的耐磨性以及極好的化學(xué)穩(wěn)定性。FEP:(氟化乙烯丙烯共聚物)不粘涂料在烘烤時(shí)熔融流動(dòng)形成無(wú)孔薄膜，具有優(yōu)越的化學(xué)穩(wěn)定性、極好的不粘特性，較高使用溫度為200°C。PFA:(過(guò)氟烷基化物)不粘涂料與FEP一樣在烘烤時(shí)熔融流動(dòng)形成無(wú)孔薄膜。PFA的優(yōu)點(diǎn)是具有更高的連續(xù)使用溫度260°C，更強(qiáng)的剛韌度，特別適合使用在高溫條件下防粘和耐化學(xué)性使用領(lǐng)域。聚三氟氯乙烯閥座使用溫度在-195~120°C。河南沖水閥閥座檢修</p><p style="text-indent:25px">聚三氟氯乙烯閥座導(dǎo)熱系數(shù)為0058W/(mc)。河南沖水閥閥座檢修</p><p style="text-indent:25px">在閥體上安裝閥座的方法有壓合、螺紋連接、機(jī)械固定以及焊接等。除螺紋連接的閥座外，用其它方法安裝的閥座一般需在安裝后再進(jìn)行精加工。閥座的主要技術(shù)要求：銅密封圈、環(huán)形閥座的外圓與端面、馬蹄形閥座的端面與圓柱面應(yīng)分別垂直。螺紋連接的閥座，螺紋與其基面應(yīng)垂直。該基面上不得有磕碰劃傷。帶螺紋的閥座和環(huán)形閥座的密封面應(yīng)與基面平行。密封面應(yīng)平整、光潔、不得有劃傷、刀痕、氣孔、裂紋等缺陷。密封面的硬度要均勻，在同一平面上的硬度差不得超過(guò)規(guī)定值。河南沖水閥閥座檢修</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司屬于機(jī)械及行業(yè)設(shè)備的高新企業(yè)，技術(shù)力量雄厚。上海含商建設(shè)是一家有限責(zé)任公司（自然）企業(yè)，一直“以人為本，服務(wù)于社會(huì)”的經(jīng)營(yíng)理念;“誠(chéng)守信譽(yù)，持續(xù)發(fā)展”的質(zhì)量方針。公司業(yè)務(wù)涵蓋維修高壓主汽門(mén)、高壓調(diào)門(mén)，維修中壓主汽門(mén)、中壓調(diào)門(mén)，閥座的車削、堆焊、補(bǔ)焊，熱處理、研磨，價(jià)格合理，品質(zhì)有保證，深受廣大客戶的歡迎。上海含商建設(shè)自成立以來(lái)，一直堅(jiān)持走正規(guī)化、專業(yè)化路線，得到了廣大客戶及社會(huì)各界的普遍認(rèn)可與大力支持。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2662917.html</p></div></div></div></div></div><div id="s9fwsef" class="page-right twoColRt"><div id="ardu39t" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8kbdk82" 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" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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