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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>德陽格蘭富機械密封件LF50957-A46L6J,格蘭富機械密封件</p><p><span>***更新：</span>2020-09-04 18:19:38</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="xq89tqk" 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: </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="nrtvsz4" class="page-proshow02"><p class="title">詳細說明</p><div id="auh88ln" class="box"><p><p> 聚四氟乙烯墊片聚四氟乙烯有“塑料”之稱，組織致密。制造密封墊時，通常把其原料粉置于金屬模中，以的高壓壓制成形，再于℃熔化熱處理，一般墊的屈服強度隨溫度上升而下降很快，德陽格蘭富機械密封件LF50957-A46L6J，易產(chǎn)生熱塑性蠕變，隨著時間的增加，密封面上的壓緊力下降，產(chǎn)生“應(yīng)力松弛”，所以常常在中加入各種填充劑即改性聚四氟乙烯，以擴大溫度范圍℃，壓力也由常溫下的上升至。純聚四氟乙烯帶在低壓小口徑管道上使用較普遍。另外包覆墊片外層是很薄的聚四氟乙烯，此時應(yīng)停車進行檢查內(nèi)層填以彈性和回彈較好的橡膠墊或石棉墊，這樣既具有的耐化學(xué)物質(zhì)性能，又具有橡膠或石棉墊良好的彈性和回彈性，并增強了抗蠕變能力，所以密封性能比純聚四氟乙烯密封墊片要好。柔性石墨復(fù)合墊片柔性石墨復(fù)合墊片是由沖齒的金屬芯板與膨脹石墨粒子復(fù)合的板材制成的一種石墨增強墊片，德陽格蘭富機械密封件LF50957-A46L6J，具有優(yōu)良的回彈性，密封性能較橡膠或石棉橡膠板好得多。同時它的耐高溫性也較好，在℃高溫之下毫無蠕變發(fā)生，而在深冷之下特性也幾乎毫無變化，德陽格蘭富機械密封件LF50957-A46L6J。一般推薦公稱壓力為，將填料壓制成所需的尺寸由此可見良好的填料密封，即是迷宮效應(yīng)和軸承效應(yīng)的綜合。高使用溫度對于低碳鋼和不銹鋼芯板分別為℃和℃。漳州格蘭富機械密封件。德陽格蘭富機械密封件LF50957-A46L6J</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="德陽格蘭富機械密封件LF50957-A46L6J,格蘭富機械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062386865235/2813339.png"></div><p> 一般選用耐老化性能較好的丁晴橡膠。當(dāng)輸送介質(zhì)在-50～200℃時，選用氟橡膠更為合適。因為它除了耐油耐熱外，機械強度大也是其主要特征。在化工泵中，由于所輸送介質(zhì)具有腐蝕性，所以一般選用聚四氟乙烯做為墊片材料。隨著泵使用的領(lǐng)域越來越廣，所輸送介質(zhì)種類也越來越多，因此在選用墊片材質(zhì)時應(yīng)查閱相關(guān)資料或通過實驗后再做出正確選擇。墊片失效的原因主要有下列幾種情況：1、墊片材質(zhì)內(nèi)部組織或厚度不均勻，以及使用了帶有裂縫或折皺的紙板，使墊片本身形成了間隙，當(dāng)作用在墊片上的力使墊片所產(chǎn)生的彈性變形不足以完全填充這些間隙時，泄漏也就不可避免了。2、墊片的材質(zhì)與所輸送的介質(zhì)不相適應(yīng)。由于泵所輸送化工產(chǎn)品化學(xué)性質(zhì)的多樣性，以及為提高燃油的燃燒值或改變其燃燒后的生成物而在燃油中增加入了一些少量的添加劑后而使燃油的某些性質(zhì)發(fā)生變化，所以選擇和輸送介質(zhì)相適的墊片材質(zhì)并非易事，因而也經(jīng)常發(fā)生由于不相適應(yīng)而使墊片發(fā)生侵蝕而產(chǎn)生泄漏的現(xiàn)象。3、作用在密封墊片上的壓力不足。由于密封面上總是存在著微觀的凹凸不平，有時還在密封面上加工出若干環(huán)形溝槽，若保證密封，就必須對密封墊片施加足夠大的壓力，使其發(fā)生彈性或塑性變形以填充這些間隙。廈門格蘭富機械密封件CRN20-6平鄉(xiāng)格蘭富機械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="德陽格蘭富機械密封件LF50957-A46L6J,格蘭富機械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062584531250/2157442.png"></div><p> 六大UHB化工泵機械密封檢修過程中存在的誤區(qū)1、彈簧壓縮量越大密封效果越好其實不然，彈簧壓縮量過大，可導(dǎo)致摩擦副急劇磨損，瞬間燒損；過度的壓縮使彈簧失去調(diào)節(jié)動環(huán)端面的能力，導(dǎo)致密封失效。2、動環(huán)密封圖越緊越好。其實動環(huán)密封圈過緊有害無益。是加劇密封圈與軸套間的磨損，泄漏；二是增大了動環(huán)軸向調(diào)整、移動的阻力，在工況變化頻繁時無法適時進行調(diào)整；三是彈簧過度疲憊易損壞；四是使動環(huán)密封圈變形，影響密封效果。3、靜環(huán)密封圈越緊越好靜環(huán)密封圈基本處于靜止?fàn)顟B(tài)，相對較緊密封效果會好些，但過緊也是有害的。是引起靜環(huán)密封因過度變形，影響密封效果；二是靜環(huán)材質(zhì)以石墨居多，般較脆，過度受力易引起碎裂；三是安裝、拆卸困難，易損壞靜環(huán)。4、葉輪鎖母越緊越好。機械密封泄漏中，軸套與軸之間的泄漏（軸間泄漏）是比較常見的。一般認(rèn)為，軸間泄漏就是葉輪鎖母沒鎖緊，其實導(dǎo)致軸間泄漏的因素較多，如軸間墊失效，偏移，軸間內(nèi)有雜質(zhì)，軸與軸套配合處有較大的形位誤差，接觸面破壞，軸上各部件間有間隙，軸頭螺紋過長等都會導(dǎo)致軸間泄漏。鎖母鎖緊過度只會導(dǎo)致軸間墊過早失效，相反適度鎖緊鎖母，使軸間墊始終保持定的壓縮彈性。</p><p> 有變形、自由高度明顯減小。該情況發(fā)生概率比較小主要原因是：①大部分用來制作彈簧和波紋管的材料在高溫下長期工作均會出現(xiàn)彈力下降的缺陷，從而使密封端面的閉合力不足而導(dǎo)致密封端面泄漏嚴(yán)重。金屬波紋管的高溫失彈即是該類機械密封的一種普遍而典型的失效形式；②彈簧在高溫下長期工作發(fā)生蠕變、疲勞失效等；③彈簧在高溫下長期工作腐蝕失效。五、結(jié)尾語離心泵在低于小流量值得狀態(tài)下工作時，流體在泵內(nèi)產(chǎn)生嚴(yán)重的回流等現(xiàn)象，導(dǎo)致產(chǎn)生溫升和振動。抽空現(xiàn)象是當(dāng)離心泵發(fā)生故障的眾多原因之一，當(dāng)其發(fā)生時會伴隨以下狀況：①、電機電流下降②、壓力大幅波動③、流量異常波動④、發(fā)出雜音異聲⑤、泵體發(fā)生振動⑥、泵缸溫度升高為什么說抽空是機械密封的敵人？在泵抽空以后，或者在抽空發(fā)生的過程中1）泵體振動大，機械密封的動、靜環(huán)會不斷發(fā)生間歇性碰撞，導(dǎo)致泄漏發(fā)生，嚴(yán)重時機械密封結(jié)構(gòu)失效；2）機械密封的動靜環(huán)的壓緊是介質(zhì)壓力和彈簧的預(yù)緊力之和（開頭已提到），當(dāng)抽空后，介質(zhì)壓力就會沒有，動靜環(huán)的接觸壓力就會變小，密封失效；3）泵抽空后，采用自沖洗方案（即利用泵送介質(zhì)沖洗）的機械密封動靜環(huán)端面失去了冷卻和潤滑，發(fā)生干摩，機械密封失效。懷化格蘭富機械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="德陽格蘭富機械密封件LF50957-A46L6J,格蘭富機械密封件" src="https://tyunfile.71360.com/UploadFile/ygebgm/637348062347294922/295142.png"></div><p> 2)、對安裝機械密封時壓縮量過大，導(dǎo)致摩擦副端面嚴(yán)重磨損、擦傷；3)、動環(huán)密封圈過緊，彈簧無法調(diào)整動環(huán)的軸向浮動量；4)、靜環(huán)密封圈過松，當(dāng)動環(huán)軸向浮動時，靜環(huán)脫離靜環(huán)座；5)、工作介質(zhì)中有顆粒狀物質(zhì)，運轉(zhuǎn)中進人摩擦副，探傷動、靜環(huán)密封端面；6)、設(shè)計選型有誤，密封端面比壓偏低或密封材質(zhì)冷縮性較大等。上述現(xiàn)象在試運轉(zhuǎn)中經(jīng)常出現(xiàn)，有時可以通過適當(dāng)調(diào)整靜環(huán)座等予以消除，但多數(shù)需要重新拆裝，更換密封。3、由于兩密封端面失去潤滑膜而造成的失效a）因端面密封載荷的存在，在密封腔缺乏液體時啟動泵而發(fā)生干摩擦；b）介質(zhì)的低于飽和蒸汽壓力，使得端面液膜發(fā)生閃蒸，喪失潤滑；c）如介質(zhì)為易揮發(fā)性產(chǎn)品，在機械密封冷卻系統(tǒng)出現(xiàn)結(jié)垢或阻塞時，由于端面摩擦及旋轉(zhuǎn)元件攪拌液體產(chǎn)生熱量而使介質(zhì)的飽和蒸汽壓上升，也造成介質(zhì)壓力低于其飽和蒸汽壓的狀況。4、由于腐蝕而引起的機械密封失效a）密封面點蝕，甚至穿透。b）由于碳化鎢環(huán)與不銹鋼座等焊接，使用中不銹鋼座易產(chǎn)生晶間腐蝕；c）焊接金屬波紋管、彈簧等在應(yīng)力與介質(zhì)腐蝕的共同作用下易發(fā)生破裂。5、由于高溫效應(yīng)而產(chǎn)生的機械密封失效a）熱裂是高溫油泵。南昌格蘭富機械密封件。沈陽格蘭富機械密封件TP 65-170/2</p><p style="text-indent:25px">承德格蘭富機械密封件。德陽格蘭富機械密封件LF50957-A46L6J</p><p> 以及機械密封的平衡程度，還有密封端面液膜的閃蒸等都是造成端面打開而使固體顆粒進入的主要原因。c）機械密封的平衡程度β也影響著密封的磨損。一般情況下，平衡程度β=75%左右適宜。β<75%，磨損量雖然降低，但泄漏增加，密封面打開的可能性增大。對于高負荷（高PV值）的機械密封，由于端面摩擦熱較大，β一般取65%～70%為宜，對低沸點的烴類介質(zhì)等，由于溫度對介質(zhì)氣化較敏感，為減少摩擦熱的影響，β取80%～85%為好。7、因安裝、運轉(zhuǎn)或設(shè)備本身所產(chǎn)生的誤差而造成機械密封泄漏a）由于安裝不良，造成機械密封泄漏。主要表現(xiàn)在以下幾方面：1）動、靜環(huán)接觸表面不平，安裝時碰傷、損壞；2）動、靜環(huán)密封圈尺寸有誤、損壞或未被壓緊；3）動、靜環(huán)表面有異物；4）動、靜環(huán)V型密封圈方向裝反，或安裝時反邊；5）軸套處泄漏，密封圈未裝或壓緊力不夠；6）彈簧力不均勻，單彈簧不垂直，多彈簧長短不一；7）密封腔端面與軸垂直度不夠；8）軸套上密封圈活動處有腐蝕點。b）設(shè)備在運轉(zhuǎn)中，機械密封發(fā)生泄漏的原因主要有：1）泵葉輪軸向竄動量超過標(biāo)準(zhǔn)，轉(zhuǎn)軸發(fā)生周期性振動及工藝操作不穩(wěn)定，密封腔內(nèi)壓力經(jīng)常變化等均會導(dǎo)致密封周期性泄漏。德陽格蘭富機械密封件LF50957-A46L6J</p><p style="text-indent:25px">伊格爾博格曼機械密封（張家港）有限公司致力于機械及行業(yè)設(shè)備，以科技創(chuàng)新實現(xiàn)高品質(zhì)管理的追求。張家港博格曼作為機械密封，機械密封件，泵用機械密封，集裝式機械密封，釜用機械密封，攪拌器機械密封，金屬波紋管機械密封，泵廠配套機械密封，石家莊工業(yè)泵機械密封，襄樊五二五泵用機械密封，柳州酸王泵用機械密封，連成配套機械密封，凱泉配套機械密封，東方配套機械密封，南方配套機械密封，福斯機械密封，沃曼泵用機械密封，電廠配套機械密封，凱泉配套機械密封。的企業(yè)之一，為客戶提供良好的機械密封，泵用機械密封，釜用機械密封，攪拌器機械密封。張家港博格曼不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。張家港博格曼始終關(guān)注機械及行業(yè)設(shè)備行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1156853.html</p></div></div></div></div></div><div id="ziaxubq" class="page-right twoColRt"><div id="vpmjqsr" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="t8tdkbd" 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配件哪家強信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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