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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>河南截止閥閥座磨損修復(fù),閥座</p><p><span>***更新：</span>2021-01-09 07:18:24</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="8r3bqkg" 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="lubi8i3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="zy8yasp" 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/℃，抗拉強(qiáng)度為35~40MPa，彈性模量為1300MPa，河南截止閥閥座磨損修復(fù)，抗壓強(qiáng)度為50~70MPa，河南截止閥閥座磨損修復(fù)，彎曲強(qiáng)度為70MPa，河南截止閥閥座磨損修復(fù)。閥座修理時(shí)，要查看螺絲的強(qiáng)度和硬度是不是抵達(dá)消費(fèi)廠的規(guī)則請(qǐng)求。河南截止閥閥座磨損修復(fù)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南截止閥閥座磨損修復(fù),閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582116846338/9296858.png"></div><p style="text-indent:25px">閥座能耐較高溫下的無機(jī)酸、較低溫度下的鹽溶液強(qiáng)氧化劑，也能耐室溫下的大多數(shù)有機(jī)介質(zhì)。聚全氟乙丙烯：聚全氟乙丙烯(PFEP-F46)具有耐高溫和耐低溫性能，可在-85~205℃范圍內(nèi)長(zhǎng)期工作，密度為21g/cm3，導(dǎo)熱系數(shù)為025W/(mc)，線膨脹系數(shù)為(95~196)×10-5/℃，抗拉強(qiáng)度為19~20MPa，抗壓強(qiáng)度為710MPa，彎曲強(qiáng)度為14MPa。具有與聚四氟乙烯相當(dāng)?shù)幕瘜W(xué)穩(wěn)定性，能耐各種濃度的無機(jī)酸、堿、醇、酮、烴類、鹵代烴、芬烴、油脂和去污劑等。聚酰胺：聚酰胺(N1010)在常溫下具有較高的抗拉強(qiáng)度，良好的沖擊韌性，高的硬度和疲勞強(qiáng)度，特別是耐磨性和自潤(rùn)滑性能優(yōu)異，低摩擦系數(shù)(003)等特點(diǎn)。河南截止閥閥座磨損修復(fù)當(dāng)閥座浮動(dòng)球體固定時(shí),流體壓力不能使球體產(chǎn)生位移。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南截止閥閥座磨損修復(fù),閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582046612006/8114490.png"></div><p style="text-indent:25px">蝶閥閥座的材質(zhì)非常普遍，但是常用的材質(zhì)有軟密封的三元乙丙橡膠(EPDM)、J腈橡膠(NBR)、聚四氟乙烯(PTFE)，和金屬硬密封的硬質(zhì)合金材質(zhì)四種：三元乙丙橡膠(EPDM):與其他通用橡膠相比，三元乙丙橡膠有很大的優(yōu)勢(shì)。性價(jià)比非常高，在常用的橡膠中，EPDM的生膠密度較輕，可以做大量的填充，降低了膠料的成本。EPDM材質(zhì)耐老化、經(jīng)的起日光暴曬、耐熱、耐水汽、耐輻射，適用于弱酸弱堿的介質(zhì)。良好的絕緣性能。適用溫度范圍，較低可以到-409C--60°C，可以在130°C的溫度條件下長(zhǎng)期使用。</p><p style="text-indent:25px">閥座的安裝位置如何檢查？高層內(nèi)閥座設(shè)計(jì)安裝的位置不妥，會(huì)出現(xiàn)閥座后壓力忽高忽低，管網(wǎng)壓力嚴(yán)重偏離允許范圍，伴隨毀壞淋浴器，水管爆裂和損壞用戶水表等事故發(fā)生；有時(shí)也會(huì)水流不暢，分區(qū)內(nèi)出現(xiàn)無規(guī)律的斷水現(xiàn)象，影響用戶用水。出現(xiàn)類似事故，檢查整個(gè)閥座減壓分區(qū)給水系統(tǒng)，無疑點(diǎn)可找；拆卸閥座過濾器等元件并無異常；有些物業(yè)管理單位甚至懷疑閥座的技術(shù)性能，多次調(diào)換新的閥座，也不能解決問題。這時(shí)可從檢查比例閥座設(shè)計(jì)安裝位置是否合理著手，認(rèn)真檢查管網(wǎng)系統(tǒng)是否存在等位倒虹管現(xiàn)象，即分區(qū)的輸出管路標(biāo)高相近。此類情況在主、副樓同一屋頂水箱，下給水供水系統(tǒng)中很容易出現(xiàn)。發(fā)現(xiàn)這些問題，可以考慮把比例閥座安裝位置提高一個(gè)層面(不能提得太高，必須顧全分區(qū)內(nèi)用水設(shè)備的承壓規(guī)范要求)；也可在主、副樓內(nèi)，分設(shè)兩組**的比例閥座給水系統(tǒng)。閥座雙倍運(yùn)動(dòng)閥座是當(dāng)中腔壓力大于出口壓力時(shí),使閥座壓緊球體密封圈產(chǎn)生彈塑性變形實(shí)現(xiàn)密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南截止閥閥座磨損修復(fù),閥座" src="https://tyunfile.71360.com/UploadFile/shhanshang/637408582166787755/8558756.png"></div><p style="text-indent:25px">閥座是閥門內(nèi)可拆卸面部件，用于支撐閥芯全關(guān)位置，并構(gòu)成密封副。一般閥座直徑即為閥門較大流通直徑。比如說蝶閥的閥座材質(zhì)非常普遍，各類橡膠，塑料，金屬材料均可作為閥座材質(zhì)，例如：EPDM，NBR，NR，PTFE，PEEK，PFA，SS315，STELLITE等等。使用有彈性的密封材料及小的執(zhí)行機(jī)構(gòu)推力來獲得氣泡嚴(yán)密級(jí)密封，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，以阻塞全部的泄漏通路。材料的滲透性對(duì)流體來說是少量泄漏的根據(jù)。材料太軟，或在荷載下出現(xiàn)冷變形（蠕變），可以加填料如玻璃纖維使其變硬。常用的閥座有對(duì)夾式閥座和法蘭式閥座兩種。河南截止閥閥座磨損修復(fù)</p><p style="text-indent:25px">金屬密封閥座產(chǎn)品不適合裝置于管路結(jié)尾。河南截止閥閥座磨損修復(fù)</p><p style="text-indent:25px">通用高分子閥座材料主要有聚氯乙烯、聚乙烯、聚丙烯、環(huán)氧樹脂、酚醛樹脂和呋喃樹脂等。特殊高分子材料主要有聚四氯乙烯、聚三氟氯乙烯、聚全氟乙丙烯、聚醚醚酮和聚酰亞胺等。聚四氟乙烯是閥門常用的一種軟密封閥座材料，俗稱“塑料王”，中文商品名“鐵氟龍”、“特氟隆”“特氟龍”、“特富隆”、‘泰氟龍”等。它是由四氟乙烯經(jīng)聚合而成的高分子化合物，具有優(yōu)良的化學(xué)穩(wěn)定性、耐腐蝕性，是當(dāng)今世界上耐腐蝕性能很好材料之一，除熔融金屬鈉和液氟外，能耐其它一切化學(xué)藥品，在王水中煮沸也不起變化，普遍應(yīng)用于各種需要抗酸堿和有機(jī)溶劑的、密封性、高潤(rùn)滑不粘性、電絕緣性和良好的抗老化耐力、耐溫優(yōu)異(能在+250°C至-180°C的溫度下長(zhǎng)期工作。河南截止閥閥座磨損修復(fù)</p><p style="text-indent:25px">上海含商建設(shè)工程有限公司發(fā)展規(guī)模團(tuán)隊(duì)不斷壯大，現(xiàn)有一支專業(yè)技術(shù)團(tuán)隊(duì)，各種專業(yè)設(shè)備齊全。在上海含商建設(shè)近多年發(fā)展歷史，公司旗下現(xiàn)有品牌汽輪機(jī)軸系檢修維護(hù),汽輪機(jī)轉(zhuǎn)子磨損修復(fù)等。公司以用心服務(wù)為重點(diǎn)價(jià)值，希望通過我們的專業(yè)水平和不懈努力，將市政公用工程，管道工程，機(jī)電設(shè)備安裝、維修（除特種設(shè)備），化工產(chǎn)品及原料（除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、儀器儀表、五金交電、橡塑制品、建筑材料、裝潢材料、電子產(chǎn)品、日用百貨的銷售，機(jī)械設(shè)備技術(shù)領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)咨詢和技術(shù)服務(wù)。等業(yè)務(wù)進(jìn)行到底。誠(chéng)實(shí)、守信是對(duì)企業(yè)的經(jīng)營(yíng)要求，也是我們做人的基本準(zhǔn)則。公司致力于打造***的維修高壓主汽門、高壓調(diào)門，維修中壓主汽門、中壓調(diào)門，閥座的車削、堆焊、補(bǔ)焊，熱處理、研磨。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2770213.html</p></div></div></div></div></div><div id="uwm3qco" class="page-right twoColRt"><div id="7dxe78j" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uo2838v" class="recomPic likePro"><a 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