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<meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center 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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>成都格蘭富機(jī)械密封件TP125-420/4,格蘭富機(jī)械密封件</p><p><span>***更新：</span>2020-12-10 12:22:24</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="c7rogse" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">伊格爾博格曼機(jī)械密封（張家港）有限公司</a></p><p><span>聯(lián)系人：</span>閆女士</p><p><span>郵箱: </span>eaglebugmann@qq.com</p><p><span>電話: </span>18013293108</p><p><span>傳真: </span>0512_</p><p><span>網(wǎng)址: </span>http://eaglebugmann.com</p><p><span>手機(jī): </span>0512-58756006</p><p><span>地址: </span>德積福民村（天霸路）</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="p7zrtah" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="dxumtkr" class="box"><p><p> 會(huì)導(dǎo)致環(huán)表面出現(xiàn)徑向裂紋，從而使動(dòng)靜環(huán)急劇磨損，密封面泄漏迅速增加。碳化鎢環(huán)熱裂現(xiàn)象較常見。2.發(fā)泡、炭化使用中如石墨環(huán)超過允許使用溫度，則其表面會(huì)析出樹脂，摩擦面附近樹脂會(huì)發(fā)生炭化，當(dāng)有黏結(jié)劑時(shí)，又會(huì)發(fā)泡軟化，成都格蘭富機(jī)械密封件TP125-420/4，使密封面泄漏量增加，密封失效。3.老化、龜裂、溶脹橡膠超過許用溫度繼續(xù)使用，將迅速老化、龜裂、變硬失彈。如是有機(jī)介質(zhì)則溶脹失彈，這些均會(huì)導(dǎo)致密封失效。凡因熱損引起的密封失效，關(guān)鍵在于盡量降低摩擦熱，改善散熱，使密封面處不發(fā)生溫度劇變。磨損失效摩擦副若用材耐磨性差、摩擦因數(shù)大、端面比壓（包括彈簧比壓）過大、密封面進(jìn)入固體顆粒等均會(huì)使密封面磨損過快而引起密封失效。采用平衡型機(jī)械密封以減少端面比壓及安裝中適當(dāng)減少彈簧壓力，有利于克服因磨損引起的失效，此外，選用良好的摩擦副材料可以減輕磨損。按耐磨次序材料排列為碳化鎢-碳石墨、硬質(zhì)合金-碳石墨、陶瓷（氧化鋁）-碳石墨、噴涂陶瓷-碳石墨、氧化硅陶瓷-碳石墨，成都格蘭富機(jī)械密封件TP125-420/4，成都格蘭富機(jī)械密封件TP125-420/4、高速鋼-碳石墨、堆焊硬質(zhì)合金-碳石墨。清河格蘭富機(jī)械密封件。成都格蘭富機(jī)械密封件TP125-420/4</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都格蘭富機(jī)械密封件TP125-420/4,格蘭富機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062293066406/3904867.png"></div><p> 2、機(jī)械密封的沖洗狀況不符合設(shè)計(jì)要求。在輸送易結(jié)晶或有細(xì)小顆粒的介質(zhì)時(shí)，必須有一定壓力和一定流量的沖洗液進(jìn)行沖洗，否則其結(jié)晶體或者微粒會(huì)加速密封副的磨損，以及影響密封副磨損后的自動(dòng)補(bǔ)償而發(fā)生泄漏。所以根據(jù)輸送介質(zhì)的性質(zhì)不僅要配置相應(yīng)的沖洗管路，更要安裝有監(jiān)控和調(diào)節(jié)功能的儀表和裝置，保證沖洗液的壓力和流量滿足設(shè)計(jì)要求，才能維持機(jī)封的正常工作，這一點(diǎn)往往被用戶所忽視。3、每種機(jī)械密封所能承受的壓力是有限度的，由于對密封腔內(nèi)的壓力測算不準(zhǔn)，造成密封腔內(nèi)的壓力超過了機(jī)械密封所能承受的壓力而產(chǎn)生泄漏，也是常見的密封失效原因之一。4、機(jī)械密封的工作溫度不能超過其規(guī)定值。在有冷卻管路的設(shè)計(jì)中，往往由于冷卻介質(zhì)的流量不足而使冷卻效果降低;在沒有冷卻管路的設(shè)計(jì)中，密封腔內(nèi)經(jīng)常由于窩存空氣而造成機(jī)械密封處于干磨擦狀態(tài)。這兩種情況都會(huì)使機(jī)械密封的運(yùn)動(dòng)密封副工作溫度過高而加快磨損，導(dǎo)致密封失效。5、在使用單彈簧的機(jī)械密封時(shí)，忽略彈簧的旋轉(zhuǎn)方向與泵轉(zhuǎn)子轉(zhuǎn)動(dòng)方向的正確組合也時(shí)有發(fā)生?；蛟O(shè)計(jì)時(shí)沒有說明，或裝配時(shí)的疏忽，沒有做到因?yàn)檗D(zhuǎn)子的旋轉(zhuǎn)而使機(jī)械密封的彈簧力加大而是相反。承德格蘭富機(jī)械密封件CR90-6貴陽格蘭富機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都格蘭富機(jī)械密封件TP125-420/4,格蘭富機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062477021485/4951594.png"></div><p> 尤其是深度尺寸過大時(shí)，使O形圈安裝后壓縮變形量不足而影響密封能力。一般O形圈安裝后壓縮變形量應(yīng)在18%～22%之間，截面尺寸大時(shí)壓縮相對變形量較小，而截面尺寸較小時(shí)壓縮相對變形量則較大。2、O形密封圈的公稱尺寸與實(shí)際安裝尺寸相差太多，形成O形圈在拉伸后截面尺寸縮小的狀況下工作，造成壓縮變形量不足而產(chǎn)生泄漏。3、O形密封圈在安裝時(shí)，由于密封面的進(jìn)口沒有光滑的倒角或倒圓而將O形圈劃傷而產(chǎn)生泄漏。4、O形密封圈的材質(zhì)不適用于密封介質(zhì)而被侵蝕后失效。5、O形密封圈使用時(shí)間太久后老化變質(zhì)，彈性降低后而失效，所以在設(shè)備大修時(shí)一般都將O形圈更換。另外，O形密封圈的硬度，溝槽和密封面的粗糙度也影響O形密封圈的密封效果。填料密封將富有壓縮性和回彈性的填料放入填料函內(nèi)，依靠壓蓋的軸向壓緊力轉(zhuǎn)化為徑向密封力，從而起到密封作用。這種密封方法稱為填料密封，這種填料稱為密封填料。由于填料密封結(jié)構(gòu)形式簡單，更換方便、價(jià)格低廉、適應(yīng)轉(zhuǎn)速、壓力、介質(zhì)寬泛而在泵的設(shè)計(jì)中得到普遍采用。輸送常溫介質(zhì)時(shí)，填料密封一般都設(shè)有填料環(huán)，其或與泵的高壓腔相通，或外接具有一定壓力的液體介質(zhì)，可起到冷卻、潤滑、密封或沖洗作用。由于填料密封是一種接觸密封。</p><p> 不是沒有合理的配置輔助沖洗系統(tǒng)就是雖然設(shè)計(jì)了輔助系統(tǒng)但由于設(shè)計(jì)的不規(guī)范，不合理導(dǎo)致達(dá)不到預(yù)期的密封。因機(jī)械密封振動(dòng)偏大導(dǎo)致機(jī)械密封不好影響機(jī)械密封振動(dòng)偏大的原因有許多，但并不是所有都是由機(jī)械密封本身所引起的，很多都是由于泵整體的振動(dòng)引起機(jī)械密封振動(dòng)過大，如泵轉(zhuǎn)子動(dòng)不平衡，平臺甲板的共振，軸承損壞或軸瓦磨損，泵與電機(jī)對中不好，泵內(nèi)流體的脈動(dòng)，泵體氣蝕等原因均可引起泵的振動(dòng)。陶瓷的優(yōu)點(diǎn)是耐腐蝕性好機(jī)械密封振動(dòng)偏大會(huì)對機(jī)械密封產(chǎn)生重要的影響，甚至終會(huì)導(dǎo)致失去密封。因泵汽蝕引起機(jī)械密封損壞導(dǎo)致機(jī)械密封不好由于操控，設(shè)計(jì)不合理等原因?qū)е卤迷谶\(yùn)轉(zhuǎn)時(shí)局部會(huì)產(chǎn)生汽蝕現(xiàn)象，汽蝕現(xiàn)象會(huì)產(chǎn)生氣泡對機(jī)械密封動(dòng)靜環(huán)吻合面以及外表面產(chǎn)生影響，久而久之使機(jī)械密封失效。應(yīng)采取措施消除泵軸竄量大重視對軸向力平衡裝置的合理化設(shè)計(jì)，在設(shè)計(jì)階段就徹底消除軸向竄量，規(guī)避該問題的發(fā)生。消除軸向力偏大重視對軸向力平衡機(jī)構(gòu)的合理化設(shè)計(jì)，使其不僅在原理上能夠平衡掉軸向力，并且做到在今后的制造，安裝，使用過程中同樣能夠較好的平衡掉軸向力。單彈簧要注意旋向不應(yīng)不勁用左右手判別彈簧左右旋運(yùn)轉(zhuǎn)前首先將介質(zhì)冷卻水閥門打開。福州格蘭富機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="成都格蘭富機(jī)械密封件TP125-420/4,格蘭富機(jī)械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062451201172/1653929.png"></div><p> FFKM)R石墨薄片石墨薄片X按規(guī)定按規(guī)定Z蝸形纏繞墊石墨薄片表2機(jī)械密封分類編碼的第五位字母第五位字母密封環(huán)端面副材料環(huán)1環(huán)2L碳碳化鎢-1M碳碳化鎢-2N碳碳化硅O碳化鎢-2碳化硅P碳化硅碳化硅X表3機(jī)械密封墊和波紋管的溫度極限密封墊材料環(huán)境溫度或泵送溫度比較低比較高(℃)(○F)(℃)(○F)1.聚四氟乙烯-75-.丁晴橡膠-40-.氯丁橡膠-.氟橡膠-.金屬波紋管a6.高氟橡膠-.石墨薄片-240-400400b750b8.玻璃纖維填充的聚四氟乙烯-212-.云母/石墨-240-10.乙烯丙烯-57-70180350注：a：其環(huán)境溫度或泵送溫度請?jiān)儐栔圃鞆S。b：對于非氧化性大氣，溫度是870℃(1600○F)；詢問制造廠。攝氏溫度(℃)與華氏溫度(○F)的計(jì)算公式：攝氏溫度(℃)＝（華氏溫度-32）×5／9華氏溫度(○F)＝攝氏溫度×9／5-32機(jī)械密封的注解:1.除非另有規(guī)定,采用多彈簧密封的彈簧材料必須采用HastelloyC(哈氏C)。單彈簧密封的彈簧材料必須采用奧氏體不銹鋼(AISI標(biāo)準(zhǔn)型316或同等材料)。其它金屬零件也必須采用奧氏體不銹鋼(AISI標(biāo)準(zhǔn)型316或同等材料)或適合于使用條件下的其它耐腐蝕材料，但對金屬波紋管除外，如果采用金屬波紋管，其材料必須由密封制造廠根據(jù)使用條件推薦。金屬波紋管的腐蝕速率應(yīng)低于每年50μm(2mils。黑龍江格蘭富機(jī)械密封件。湘潭格蘭富機(jī)械密封件TP 32-230/2</p><p style="text-indent:25px">煙臺格蘭富機(jī)械密封件。成都格蘭富機(jī)械密封件TP125-420/4</p><p> 根據(jù)近幾年來機(jī)械密封運(yùn)行工況和失效后的拆檢情況來看，其常見原因如下：1、密封環(huán)熱裂紋機(jī)械密封拆開時(shí)可發(fā)現(xiàn)，硬環(huán)表面有過熱回火色，石墨環(huán)表面有環(huán)狀溝紋、橡膠圈老化等。主要原因是：①由于介質(zhì)溫度過高泵體內(nèi)形成汽蝕，汽蝕發(fā)生后，水力沖擊帶動(dòng)密封做迅速的軸向振蕩，使動(dòng)靜環(huán)及輔助密封圈等零件嚴(yán)重的磨損，使機(jī)械密封裝置損壞。②潤滑不良，密封環(huán)端面沒有形成液體潤滑膜或密封環(huán)端面間液膜汽化，形成干摩擦；③冷卻系統(tǒng)散熱不良；2、離心泵的振動(dòng)由于制造和安裝精度等原因，所有的離心泵都存在著振動(dòng)。振動(dòng)的原因主要為轉(zhuǎn)子不平衡、機(jī)泵不同心、滾動(dòng)軸承故障等。從軸承箱表面測到的振幅不能大于，超過該值就要停泵處理。振動(dòng)可分解為三個(gè)方向：垂直、水平和軸向，其中以軸向振動(dòng)對密封的危害大。當(dāng)泵振動(dòng)加劇時(shí)，動(dòng)靜環(huán)之間發(fā)生分離。瞬間的分離在液膜壓力作用下致使密封面開啟，出現(xiàn)大量泄漏，如果這時(shí)介質(zhì)中固體顆粒含量超過5%時(shí)，由于振動(dòng)引起端面分離，顆粒嵌入較軟的石墨環(huán)端面，造成硬質(zhì)環(huán)密封面的過度磨損。拆卸檢查時(shí)可發(fā)現(xiàn)，在硬密封面上有清晰的摩擦痕跡，進(jìn)入固體顆粒時(shí)有劃痕。3、彈性元件失彈主要特征是拆卸檢查彈性元件時(shí)，彈性元件彈力不足。成都格蘭富機(jī)械密封件TP125-420/4</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2347523.html</p></div></div></div></div></div><div id="7rik8dh" class="page-right twoColRt"><div id="hbyax74" class="box01 margin10 clearfix"><h3><a 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