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src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525128056641/611607.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dflbzep" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525128056641/611607.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="sv8h3o2" 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>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>哈爾濱204釜用機(jī)械密封,釜用機(jī)械密封</p><p><span>***更新：</span>2020-12-29 05:15:28</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="tudok9a" 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="2j3zaql" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="7obrmiy" class="box"><p><p> 其抗拉強(qiáng)度和硬度增加而韌性下降.塑料和橡膠的低溫性能比金屬材料更為敏感.一般情況下，塑料和橡膠只能在-50℃以上的溫度范圍使用。對于低溫泵，資料[13]介紹:丁睛橡膠的使用溫度限為-60℃氯丁橡膠為-65℃，硅酮橡膠為-80℃，氟化橡膠為-45℃，聚四氟乙烯為-79℃，哈爾濱204釜用機(jī)械密封，并認(rèn)為使用以上這些材料作填料的機(jī)械密封以-70℃為使用極限。如果介質(zhì)溫度在-70℃以下，哈爾濱204釜用機(jī)械密封，則使用波紋管型機(jī)械密封或者雙端面機(jī)械密封.資料[6]介紹聚四氟乙烯在氦的沸點(diǎn)(℃)還能保持一點(diǎn)柔軟性，適宜做低溫材料，但聚四氟乙烯的膨脹系數(shù)大，所以在-50~-100℃溫度使用時(shí)，常采用四氟填充石墨或玻璃纖維，而不用純四氟材料.此外，在低溫時(shí)，V形圈裝到軸套上后，動(dòng)環(huán)往往不能浮動(dòng)。因此，要注意V形圈的組裝尺寸。關(guān)于低溫機(jī)械密封及低溫泵材料如表10-4所示。低溫時(shí)PTFE的機(jī)械性能如表10-5所示。2.結(jié)構(gòu)要求在一般的0~-50℃低溫下，常采用單端面機(jī)械密封，有非平衡或平衡型結(jié)構(gòu)，但多數(shù)選用平衡型結(jié)構(gòu)，這是因?yàn)槊芊舛嗣娴囊盒萁?jīng)摩擦后溫度升高，液膜壓力隨之升高而將密封面推開，泄漏加劇，哈爾濱204釜用機(jī)械密封。因此，低溫時(shí)的端面比壓要選高值。在液溫低于-70℃時(shí)，則采用波紋管密封或雙端面密封.不過使用雙端面密封時(shí)。蘇州MR-D釜用機(jī)械密封件。哈爾濱204釜用機(jī)械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="哈爾濱204釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525128056641/611607.png"></div><p> 比YG6大1倍多，為／℃（10～500℃時(shí)）。這兩點(diǎn)決定了耐熱沖擊性能不如YG6好。正因?yàn)榫€膨脹系數(shù)較大，和馬氏體不銹鋼接近（10～500℃時(shí)為11X10-6／℃），為和環(huán)座焊接提供了有利條件。焊接時(shí)需在環(huán)和座之間鋪放一層鎳基粉末，置于真空電阻爐中，經(jīng)1100℃高溫熔焊，然后進(jìn)行回火處理，以消除焊接應(yīng)力。由于是焊接的密封環(huán)，硬質(zhì)合金環(huán)的厚度可以比YG6薄，毛坯的厚度也只有3～3．5mm。以因密度小，是YG6的一半（7~），因此，可節(jié)約貴重金屬，價(jià)格較低。這種合金的牌號為CN15，其中Cr3C285%，Ni為15%，由北京硬質(zhì)合金廠研制成功。熱裝式密封環(huán)以其性能***應(yīng)用，但過盈量過大則硬質(zhì)合金在較大擠壓應(yīng)力作用下產(chǎn)生變形；過盈量過小，使用時(shí)會松脫。經(jīng)長期觀察分析，熱裝式密封環(huán)松脫主要是由于環(huán)座和硬質(zhì)合金環(huán)兩者線膨脹純利系數(shù)的差別，工作出現(xiàn)間隙。由此可見，熱裝式密封環(huán)失效的根本原因主要有二：一是過盈值小，三是環(huán)座材料選擇不當(dāng)，線膨脹系數(shù)太大。確定過盈值應(yīng)遵循的原則：1）從傳遞扭矩的角度考慮過盈值應(yīng)足夠大。2）從環(huán)的變形的角度考慮過盈值不可過大。綜合起來，在滿足環(huán)和座傳遞扭矩的情況下，取小的過盈值。哈爾濱204釜用機(jī)械密封大慶FMY212釜用機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="哈爾濱204釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png"></div><p> 圖29）旋轉(zhuǎn)式機(jī)械密封軸套和傳動(dòng)座傳動(dòng)方式：l）頂絲傳動(dòng)（圖30）。傳動(dòng)座用1～2個(gè)頂絲固定在軸套表面上，結(jié)構(gòu)簡單，但是安裝時(shí)軸套需從軸上取出，方能緊固頂絲。這種結(jié)構(gòu)要求在軸套表面（與頂絲接觸的部位）劃一凹坑，否則運(yùn)轉(zhuǎn)中易出現(xiàn)傳動(dòng)失效，傳動(dòng)座會發(fā)生軸向串動(dòng)。在直徑較大和溫度較高時(shí)，不能采用單純的頂絲傳動(dòng)。2）頂絲一臺階傳動(dòng)（圖31）。為了克服單純頂絲傳動(dòng)時(shí)，傳動(dòng)座軸向串動(dòng)，可在軸套上設(shè)一臺階，傳動(dòng)座頂靠在幼查臺階端面，體傳動(dòng)成無法串動(dòng)定位，用鍵來帶動(dòng)軸套旋轉(zhuǎn)。這種結(jié)構(gòu)簡單，安裝方便，現(xiàn)場施工時(shí)可不用拆卸軸套即可安裝傳動(dòng)座，使用可靠，運(yùn)動(dòng)中不會產(chǎn)生傳動(dòng)失效。3）鍵傳動(dòng)。4）撥叉?zhèn)鲃?dòng)（圖33）。是鍵傳動(dòng)基礎(chǔ)上改進(jìn)的，軸套上仍有臺階，傳動(dòng)座為沖壓件，上面有兩個(gè)小“爪”（撥叉）伸到軸套臺階的槽中實(shí)現(xiàn)傳動(dòng)，結(jié)構(gòu)也很簡單。由于是沖壓件，撥叉徑向尺寸?。ㄝ^?。?，沖壓后冷作硬化，撥叉易斷裂。在中性介質(zhì)中尚可使甩。5)彈簧傳動(dòng)。這種傳動(dòng)方式不用傳動(dòng)座，傳動(dòng)彈簧依靠過盈值旋緊在軸套上，并傳遞扭矩，彈簧的端部靠緊軸套的臺階處（圖34），防止軸向位移。這種方式結(jié)構(gòu)簡單，安裝方便，但對彈簧的旋向有要求，泵軸旋轉(zhuǎn)時(shí)。</p><p> 有時(shí)密封介質(zhì)本身就是各種懸浮漿液，這些介質(zhì)中的顆粒對密封起著磨料作用.高粘度介質(zhì)常指粘度大于Pa·s(700cP)的介質(zhì).一、含有磨料介質(zhì)的機(jī)械密封實(shí)際生產(chǎn)中經(jīng)常遇到液一固兩相或氣一固兩相介質(zhì)的密封問題，而機(jī)械密封的大敵是含有固體顆粒的溶液.磨料介質(zhì)包含以下幾種情況:1.處理物料是漿液;2.在機(jī)體和管線內(nèi)有雜質(zhì)混人;3.由于溫度變化有結(jié)晶析出或有凝固物產(chǎn)生;4.在密封端面內(nèi)有溶解物析出;5.由于化學(xué)反應(yīng)有固體物質(zhì)產(chǎn)生;6.由于電化學(xué)作用在密封端面內(nèi)析出和附著金屬物質(zhì).普通單端面機(jī)械密封遇到磨料介質(zhì)時(shí)產(chǎn)生下列故璋:1.密封端面早期磨損;2.動(dòng)環(huán)因間隙阻塞和密封圈摩擦力增大而不能動(dòng)作;3.密封圈不能起緩沖作用;4.彈簧被雜質(zhì)阻塞不能動(dòng)作;5.軸不能旋轉(zhuǎn);6.整個(gè)密封失效.對含磨料介質(zhì)的密封應(yīng)采取以下措施:1.加強(qiáng)沖洗冷卻措施，防止雜質(zhì)在密封腔內(nèi)淤塞，如單端面密封應(yīng)加注液潤滑，雙端面密封則加阻封液或阻封液和輔助注液合用;2.摩擦副材料選用硬對硬配合，常用硬質(zhì)合金對硬質(zhì)合金(或陶瓷);3.盡童采用大彈簧，減少顆粒阻塞機(jī)會；4.如用波紋管密封代替普通機(jī)械密封，建議用橡膠波紋管和焊接金屬經(jīng)過噴涂或合成橡膠包夜的波紋管，因?yàn)橐话憬饘俨y管對處理砂漿液能力差。湘潭212釜用機(jī)械密封件。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="哈爾濱204釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525810605469/5748536.png"></div><p> 纏繞式波形彈簧材料可選用SU302、SUS304、SUA631J1和SUSS632等，材料的化學(xué)成應(yīng)符合GB/T3280-2008、GB/T4238-2007的規(guī)定，材料的尺寸精度要按表9-12規(guī)定。扁帶材料外表光滑，無凹坑、劃傷、斷裂、裂縫和其他物理缺陷，邊緣為圓形。纏繞式波形彈簧工作負(fù)荷的允許偏差為該負(fù)荷的10%。各種類型纏繞式波形彈簧的疲勞性能應(yīng)符合表9-13要求。3形橡膠密封圈的技術(shù)要求由于橡膠是彈性材料，在負(fù)荷作用下發(fā)生變形，尤其是在壓力高的場合合下，會使密封圈擠入密封間隙，影響浮動(dòng)性而使密封失效。因此。要根據(jù)使用壓力合理選擇O形橡膠密封圈的硬度和其截面直徑。一般高壓時(shí)選擇硬度較高的密封圈.低壓時(shí)選擇硬度較低的密封圈。常用橡膠O形圈的硬度為邵氏70±5。制造機(jī)械密封用O形圈的模具分模面盡量避開內(nèi)外側(cè)及上下側(cè)的工作面，一般采用45°開模，以保證良好的密封性能。截面尺寸要均勻，其截面形狀參考圖，不得存在凹凸不平、氣泡、雜質(zhì)等缺陷。O形橡膠密封圈內(nèi)徑極限偏差見表9-14，截面直徑偏差見表915。鎮(zhèn)江M461釜用機(jī)械密封件。哈爾濱204釜用機(jī)械密封</p><p style="text-indent:25px">石家莊207釜用機(jī)械密封廠家。哈爾濱204釜用機(jī)械密封</p><p> 密封液壓力平衡系統(tǒng)的壓力源由氮?dú)馄刻峁Ｃ芊馇粔毫潭刂圃诒雀獌?nèi)壓力高。為了適應(yīng)釜內(nèi)壓力的變化，機(jī)械密封下端面也應(yīng)采用平衡型結(jié)構(gòu)。四、液壓泵站密封液循環(huán)系統(tǒng)液壓泵站密封液循環(huán)系統(tǒng)與釜用機(jī)械密封組合型式見圖1一17。在高負(fù)荷的密封裝置中，應(yīng)采用液壓泵站密封液循環(huán)系統(tǒng)來強(qiáng)制密封液的冷卻循環(huán)。液壓泵站中密封液的壓力源由離心泵、齒輪泵或柱塞泵等提供。利用泵送壓力強(qiáng)迫密封液在密封腔內(nèi)循環(huán)。該系統(tǒng)還應(yīng)配合過濾器、冷卻器、儲能器、調(diào)節(jié)閥、壓力表等使用。調(diào)節(jié)好閥的壓力，使密封腔的壓力大于釜內(nèi)壓力。使用液壓泵站密封液循環(huán)系統(tǒng)的雙端面機(jī)械密封，下端面也必須采用平衡型結(jié)構(gòu)。除此之外，還有手壓泵增壓系統(tǒng)等型式。只有合理選用輔助系統(tǒng)，才能保證雙端面密封的使用。哈爾濱204釜用機(jī)械密封</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2610433.html</p></div></div></div></div></div><div id="fdot7co" class="page-right twoColRt"><div id="m2ds28o" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dlwlqw3" 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) 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