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>瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="tubdfc3" 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="kjqsuls" class="page-proshow02"><p class="title">詳細說明</p><div id="uogiac7" class="box"><p><p> 機械密封常見的損壞形式主要有腐蝕損壞、熱損壞和機械損壞。其中腐蝕損壞危害性較大，由于機械密封特殊的結構形式及工作環(huán)境和條件不同，腐蝕損壞的形態(tài)也多種多樣。一．金屬環(huán)腐蝕1，表面均勻腐蝕。如果金屬環(huán)表面接觸腐蝕介質，而金屬本身又不耐腐蝕，就會產生表面腐蝕，其現象是泄漏、早期磨損、破壞、發(fā)聲等。金屬表面均勻腐蝕有成膜和無膜兩種形態(tài)，無膜的金屬腐蝕很危險，腐蝕過程以一定的速度進行，這主要是選材錯誤造成的。成膜的腐蝕，其鈍化膜通常具有保護作用的特性，但金屬密封環(huán)所用的材料，如不銹鋼、鈷、鉻合金等其表面的鈍化膜在端面磨擦中破壞，在缺氧條件下新膜很難生成，使電偶腐蝕加劇。2，應力腐蝕破裂。金屬在腐蝕和拉應力的同時作用下，首先在薄弱區(qū)產生裂縫，進而向縱深發(fā)展，產生破裂，稱為應力腐蝕破裂，呼和浩特凱泉泵用機械密封3N6-11-2，選用堆焊硬質合金及鑄鐵、碳化鎢、碳化鈦等密封環(huán)，容易出現應力腐蝕破裂。密封環(huán)裂紋一般是徑向發(fā)散型的，可以是一條或多條。這些裂縫溝通了整個密封端面，加速了端面的磨損，使泄漏量增加。二．非金屬環(huán)腐蝕1，石墨環(huán)腐蝕，呼和浩特凱泉泵用機械密封3N6-11-2。用樹脂浸漬的不透性石墨環(huán)，它的腐蝕有三個原因：一是當端面過熱，溫度大于180度時，呼和浩特凱泉泵用機械密封3N6-11-2，浸漬的樹脂要折離石墨環(huán)。WQ3260-211-65凱泉泵用機械密封。呼和浩特凱泉泵用機械密封3N6-11-2</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="呼和浩特凱泉泵用機械密封3N6-11-2,凱泉泵用機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637367961686962890/99280.png"></div><p> 機械密封件泄漏所發(fā)生的部位是相當廣的，幾乎涉及所有的流體輸送與儲存的物體上。泄漏的形式及種類也是多種多樣的。首先介紹泄漏形式的分類方式：1.按泄漏的機理分類(1)界面泄漏：在密封件(墊片、填料)表面和與其接觸件的表面之間產生的一種泄漏。如法蘭與墊片之間、填料與軸或填料箱之間的泄漏。(2)滲透泄漏：介質通過密封件(墊片、填料)本體毛細管滲透出來，這種泄漏發(fā)生在致密性較差的植物纖維、動物纖維和化學纖維等材料制成的密封件上。(3)破壞性泄漏：密封件由于急劇磨損、變形、變質、失效等因素，使泄漏間隙增大而造成的一種危險陛泄漏。2.按泄漏量分類液體介質泄漏分為五級(1)無泄漏：檢測不出泄漏為準。(2)滲漏：一種輕微泄漏。表面有明顯的介質滲漏痕跡，像滲出的汗水一樣。擦掉痕跡，幾分鐘后又出現滲漏痕跡。(3)滴漏：介質泄漏成水球狀，緩慢地流下或滴下，擦掉痕跡，5min內再現水球狀滲漏者為滴漏。(4)重漏：介質泄漏較重，連續(xù)成水珠狀流下或滴下，但未達到流淌程度。(5)流淌：介質泄漏嚴重，介質噴涌不斷，成線狀流淌。氣態(tài)介質泄漏分為四級(1)無泄漏：用小紙條或纖維檢查為靜止狀態(tài)，用肥皂水檢查無氣泡者。(2)滲漏：用小紙條檢查微微飄動。呼和浩特凱泉泵用機械密封3N6-11-2KQDQ100-64凱泉泵用機械密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="呼和浩特凱泉泵用機械密封3N6-11-2,凱泉泵用機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637367961701230469/2204495.png"></div><p> 通常與制造水平和加工人員的素養(yǎng)有關，例如電焊工的水平低，或者沒有按照圖紙要求加工等。有時，設計時對密封問題考慮不周造成的后果，可以通過加工制造階段加以彌補。因此，加工制造人員具備密封的基本知識，時時關注泄漏問題十分重要。在加工制造過程中，對泄漏問題主要應作如下考慮。1、焊接件的檢漏設備零部件的焊縫是否需要進行檢漏，應根據焊接質量和設備所允許的泄漏率來確定。焊縫的檢漏是在零部件的加工過程中進行還是在總裝以后進行，需視具體情況而定。例如，某些設備由于裝配后焊縫不暴露在外面，此時，即使發(fā)現了漏孔也無法進行補焊。又如某些大容器在總裝后其容積過大，因而檢漏靈敏度可能很低，檢不出小漏孔，從而達不到檢漏的要求。對于類似這樣的容器和設備，應在零部件的加工過程中就對焊縫進行檢漏。經過檢漏的零件在對焊縫進行切削加工后，應再次進行檢漏，補焊后的焊縫也需重新檢漏。2、其他加工件的檢漏金屬板材一般不需檢漏（除鑄件外），但對表面和內部有缺陷（夾渣、氣孔、裂紋）的金屬材料，則必須進行檢漏。機械加工后的工件一般也不需要檢漏。但薄壁管材經彎曲后可能出現裂紋，因此需要對彎曲部位進行檢漏。3、機械加工與焊接加工相比。</p><p> 2）橡膠O形墊圈：斷面形狀是正圓，有一定的自緊作用，密封效果比平墊圈好，壓緊力更小。（3）塑料平墊圈：塑料的特點是耐腐蝕性好,大部分塑料耐溫性能不好。聚四氟乙烯為塑料之冠，不但耐腐蝕性能優(yōu)異，而且耐溫范圍比較寬闊，可在-180℃～+200℃之內長期使用。（4）聚四氟乙烯包墊圈：為了充分發(fā)揮聚四氟乙烯的優(yōu)點，同時彌補它彈性較差的缺點，做成聚四氟乙烯包裹橡膠或石棉橡膠的墊圈。這樣，既同聚四氟乙烯平墊圈一樣耐腐蝕，又有良好的彈性，增強密封效果，減小壓緊力。其斷面形狀如圖4-20所示。（5）石棉橡膠墊圈：由石棉橡膠板剪成。它的組分是60～80%的石棉和10～20%的橡膠，以及填充劑、硫化劑等。它有很好的耐熱性、耐冷性、化學穩(wěn)定性，而且貨源豐富，價格便宜。使用時，壓緊力不必很大。由于它能粘附金屬，所以表面涂一層石墨粉，以免拆卸時費勁。石棉橡膠板有四種顏色：灰色，用于低壓(牌號XB-200，耐壓≤16公斤/平方厘米，耐溫200℃)；紅色，用于中壓(牌號XB-350，耐壓可達40公斤/平方厘米，耐溫350℃)；紫紅色，用于高壓(牌號XB-450，耐壓100公斤/平方厘米耐溫450℃)；綠色，用于油類，耐壓性能也很好。（6）金屬平熱圈：鉛，耐溫100℃；鋁430℃；銅315℃。KQDP32-4S凱泉泵用機械密封。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="呼和浩特凱泉泵用機械密封3N6-11-2,凱泉泵用機械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637367962043632812/4874715.png"></div><p> 泵類的機械密封件使用要注意以下事項：很多人都會認為機械密封件拆開來修要比不拆開好，遇到密封件產生滲漏的時候，就急急忙忙地拆開來維修，很多的時候密封件并沒有損壞，只是稍稍調整了密封件就可以解決滲漏的問題，避免不必要的浪費。機械密封件的靜環(huán)密封圈也不可以上得太緊，雖然其處于靜止的狀態(tài)，但是過緊也會引起其過度的形變，密封效果不佳，有些靜環(huán)密封圈使用的是石墨的材質，比較脆過度用力上緊，容易產生碎裂，在安裝和拆卸的過程中也是極其容易損壞，建議使用一些進口密封件使用壽命會更長些。機械密封件中的動環(huán)密封圈松緊要適中，若是動環(huán)密封圈上得過緊使得摩擦力增加，加快了動環(huán)密封圈和軸套之間的磨損使得過早地產生滲漏。增大動環(huán)軸向的調整將和移動時的阻力。在經常變化的工況的情況下，沒有辦法進行適當的調整。彈簧也會過緊產生疲勞失效嚴重的甚至損壞，也容易使得動環(huán)密封圈產生嚴重變形，密封效果不好。機械密封件中的彈簧壓縮時候幅度要適中，切不可以認為彈簧壓縮幅度越大，密封的效果也就越好，其實不是這樣的，彈簧被壓縮的過大了，摩擦也就大幅增加，密封件也就會磨損加劇嚴重甚至燒壞，過分的壓縮彈簧，也就容易失去動環(huán)端面的調節(jié)能力。100WQS409-22凱泉泵用機械密封。呼和浩特凱泉泵用機械密封3N6-11-2</p><p style="text-indent:25px">凱泉泵用機械密封KQH80-100。呼和浩特凱泉泵用機械密封3N6-11-2</p><p> 流體在密封腔內可泄漏的通道有三處:其一是流體穿透密封材料造成泄漏;其二是從填料與填料箱體之間泄漏;其三是從填料與軸表面之間泄漏。主要故障和原因有以下幾種:a、填料外表面被研傷,填料壓蓋外側泄漏,是由于填料外徑太小.b、填料擠進軸和擋圈或軸和壓蓋之間的間隙時,多因為設計的間隙過大或偏心.c、介質沿填料壓蓋泄漏,是因為填料裝配不當或擋圈又破損.d、泄漏過大,已無法調節(jié),是因為填料膨脹或破壞，填料切得太短或裝配錯誤。四、化工泵動力密封化工泵在與運轉時，副葉輪所產生的壓頭平衡了主葉輪出口高壓液體，從而實現密封。停車時，副葉輪不起作用，因此必須同時配備停車密封裝置解決停車時可能產生的化工泵泄漏。副葉輪密封結構簡單、密封可靠、使用壽命長，化工泵運轉中可實現滴水不漏，因此在化工泵輸送含雜質介質的泵上經常采用。動力密封有離心密封、螺旋密封、磁流體密封等，其中螺旋密封很有前景。全封閉式密封有隔膜式和屏蔽式等。1.離心動力密封離心動力密封使用前提。離心動力密封是借離心力作用,將液體介質沿徑向甩出,阻止液體進入泄漏縫隙,從而到達密封的目的。離心密封*適用于液體介質,對氣體介質則不適用。因此,如果在使用離心密封的地方還要求氣密性。呼和浩特凱泉泵用機械密封3N6-11-2</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2495545.html</p></div></div></div></div></div><div id="zsegikr" class="page-right twoColRt"><div id="sm888fo" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dszb8xj" 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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