銅陵212釜用機(jī)械密封伊格爾博格曼機(jī)械密封供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 且接觸應(yīng)力不均勻，使之產(chǎn)生機(jī)械變形；二是由于使用溫度較高（或過(guò)低），材料物理性能（主要是線膨脹系數(shù)）的差異使硬質(zhì)合金環(huán)和環(huán)座的配合部位不能同步脹縮，過(guò)盈量發(fā)生變化，接觸應(yīng)力也隨著發(fā)生變化，這種"><meta name="keywords" content="銅陵212釜用機(jī)械密封,釜用機(jī)械密封"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" 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id="nwtvcl2" class="leftbox clearfix"><h1>銅陵212釜用機(jī)械密封伊格爾博格曼機(jī)械密封供應(yīng)</h1><div id="8k2ur3b" class="proBig"><div id="rfmxud4" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525920771484/3921817.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="gelif22" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525920771484/3921817.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="swdac4x" 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>銅陵212釜用機(jī)械密封,釜用機(jī)械密封</p><p><span>***更新：</span>2020-12-27 02:13:48</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="jc87wlu" 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="pertvke" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="yhjqsht" class="box"><p><p> 且接觸應(yīng)力不均勻，使之產(chǎn)生機(jī)械變形；二是由于使用溫度較高（或過(guò)低），材料物理性能（主要是線膨脹系數(shù)）的差異使硬質(zhì)合金環(huán)和環(huán)座的配合部位不能同步脹縮，過(guò)盈量發(fā)生變化，接觸應(yīng)力也隨著發(fā)生變化，這種變化對(duì)密封環(huán)的使用產(chǎn)生影響。密封端面變形破壞了平面度，更有甚者喪失過(guò)盈，使聯(lián)接失效，硬質(zhì)合金環(huán)熱裝式密封環(huán)目前有三種結(jié)構(gòu)，圖23a是制造廠早期生產(chǎn)的，結(jié)構(gòu)較為簡(jiǎn)單。但是由于硬質(zhì)合金環(huán)和輔助密封圈接觸，一旦硬質(zhì)合金環(huán)松脫，運(yùn)轉(zhuǎn)時(shí)輔助密封圈被嚴(yán)重磨損，會(huì)出現(xiàn)大量泄漏。而圖23b是在圖23a的基礎(chǔ)上改進(jìn)的，輔助密封圈不和硬質(zhì)合金環(huán)接觸，不存在上述缺陷，只是硬質(zhì)合金環(huán)和環(huán)座之間有輕微泄漏。為了減少硬質(zhì)合金環(huán)密封端面的不均勻變形，環(huán)座的熱裝部位內(nèi)外設(shè)置環(huán)形槽（圖23c），使硬質(zhì)合金環(huán)外圓柱面的接觸應(yīng)力趨于均勻，以減少碳化鎢環(huán)的變形，使用效果較好，銅陵212釜用機(jī)械密封。焊接的組合式密封環(huán)特點(diǎn)為克服熱裝式密封環(huán)松脫的缺陷，出現(xiàn)了焊接的密封環(huán)（圖24）。所用的硬質(zhì)合金是以Cr3C2為硬質(zhì)相、Ni為粘結(jié)相的燒結(jié)合金材料。耐腐蝕優(yōu)于YG6等硬質(zhì)合金，銅陵212釜用機(jī)械密封，銅陵212釜用機(jī)械密封，高溫下具有優(yōu)異的抗氧化性能，在1000℃空氣中加熱2小時(shí)無(wú)任何變化。但是導(dǎo)熱性能較差，*為YG6的1／3；線膨脹系數(shù)大。蘇州MR-D釜用機(jī)械密封件。銅陵212釜用機(jī)械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="銅陵212釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525920771484/3921817.png"></div><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(duì)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℃，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，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(kāi)，泄漏加劇。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(guò)使用雙端面密封時(shí)。銅陵212釜用機(jī)械密封石家莊207釜用機(jī)械密封廠家。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="銅陵212釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525145751953/9875963.png"></div><p> 輔助密封圈是機(jī)械密封上**薄弱環(huán)節(jié)，當(dāng)溫度超過(guò)80℃時(shí)普通橡膠已不適用，溫度超過(guò)230~250℃，聚四氟乙烯也不能使用.此外，由于高溫、易燃介質(zhì)的裂解物沉積會(huì)使彈簧阻塞.所以，當(dāng)溫度超過(guò)220℃時(shí)就應(yīng)采用金屬波紋管型機(jī)械密封，或者采用金屬波紋管與普通機(jī)械密封相結(jié)合的密封結(jié)構(gòu).3.采取冷卻措施在高溫下，為了使密封可靠運(yùn)行，盡可能對(duì)機(jī)械密封進(jìn)行冷卻，要避免在干摩擦狀態(tài)下工作.必須保持密封間隙中的溫度在密封液的汽化溫度以下.冷卻措施就是對(duì)密封進(jìn)行溫度控制，常用的溫度控制有沖洗、阻封、加強(qiáng)液體循環(huán)等(詳見(jiàn)第七章一節(jié)溫度控制裝置)。在高溫下，還可采用以下措施:(1)用Diphy1(二苯及二苯氧化物的混合物)作為阻封液，它是冷態(tài)無(wú)壓的換熱劑(阻封液由泵效螺旋輸送);(2)在超高溫下或者沒(méi)有適當(dāng)?shù)囊后w時(shí)，也可通人氮?dú)?、氬氣，以防止空氣引起的氧?4.鑲嵌摩擦副問(wèn)題密封環(huán)鑲嵌是充分利用端面材料和基體材料的特性，提高材料使用價(jià)值，一般對(duì)高溫密封采用熱鑲法.但是，由于端面耐磨材料和基體材料的熱脹系數(shù)有差異，在高溫下使用時(shí)會(huì)產(chǎn)生摩擦環(huán)松動(dòng)、脫落。因此，對(duì)鑲嵌結(jié)構(gòu)的摩擦環(huán)采用的溫度應(yīng)予以特別注意.熱鑲結(jié)構(gòu)產(chǎn)生松動(dòng)、脫落的原因，除了與使用溫度有關(guān)外。</p><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(jiǎn)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(huì)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(tái)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(tái)階，傳動(dòng)座頂靠在幼查臺(tái)階端面，體傳動(dòng)成無(wú)法串動(dòng)定位，用鍵來(lái)帶動(dòng)軸套旋轉(zhuǎn)。這種結(jié)構(gòu)簡(jiǎn)單，安裝方便，現(xiàn)場(chǎng)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(huì)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(tái)階，傳動(dòng)座為沖壓件，上面有兩個(gè)小“爪”（撥叉）伸到軸套臺(tái)階的槽中實(shí)現(xiàn)傳動(dòng)，結(jié)構(gòu)也很簡(jiǎn)單。由于是沖壓件，撥叉徑向尺寸小（較?。瑳_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(guò)盈值旋緊在軸套上，并傳遞扭矩，彈簧的端部靠緊軸套的臺(tái)階處（圖34），防止軸向位移。這種方式結(jié)構(gòu)簡(jiǎn)單，安裝方便，但對(duì)彈簧的旋向有要求，泵軸旋轉(zhuǎn)時(shí)。安慶MR-D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="銅陵212釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525294716797/5764253.png"></div><p> 還與軸徑尺寸有關(guān).當(dāng)摩擦副環(huán)基體為不銹鋼、高鎳合金、欽合金時(shí)，熱鑲硬質(zhì)合金的允許使用溫度對(duì)不同軸徑的關(guān)系如圖10-9所示.5.摩擦副環(huán)與軸之間的許用間隙高溫條件下，由于摩擦副環(huán)與軸兩者的熱脹系數(shù)的差異，會(huì)出現(xiàn)摩擦副環(huán)與軸之間間隙趨近于零的現(xiàn)象，因而造成摩擦副環(huán)浮動(dòng)性消失導(dǎo)致密封失效。所以在設(shè)計(jì)時(shí)必須合理和正確選擇摩擦副環(huán)與軸之間的間隙。二、高溫機(jī)械密封實(shí)例1.布格曼公司的HSHF+MFL型密封芳烴裝置循環(huán)油泵GA-102AB.功率1650kW，轉(zhuǎn)速6748r/min,輸送介質(zhì)為汽油，操作溫度262~284度，進(jìn)口壓力，出口壓力~175MPa，機(jī)械密封采用布格曼公司HSHF+MFL混合結(jié)構(gòu)，這是適合高溫、高壓和高速工作條件下的密封。這里HSHF是單端面、流體動(dòng)壓式帶泵效螺旋結(jié)構(gòu)MFL是單端面金屬波紋管結(jié)構(gòu).HSHF和MFL都是彈簧靜止式，以適應(yīng)高速運(yùn)轉(zhuǎn)的要求.該密封從結(jié)構(gòu)上布置成串聯(lián)式，裝于油泵的吸人端和排出端，因HSHF帶有泵效螺旋，它與軸的旋轉(zhuǎn)方向有關(guān).在吸入端的泵效套(12A)是右螺旋，泵效外殼(25A)提左螺旋;在排出端的泵效套(12B)是左螺旋，泵效外殼(25B)是右螺旋，安裝時(shí)按圖上要求裝配不能搞錯(cuò).，圖10-10為HSHF2/103+MFL65/88的結(jié)構(gòu)圖.。大慶204B釜用機(jī)械密封件。銅陵212釜用機(jī)械密封</p><p style="text-indent:25px">安慶FMY212釜用機(jī)械密封件。銅陵212釜用機(jī)械密封</p><p> 硬環(huán)的材質(zhì)種類(lèi)很多（見(jiàn)“27”）。只有在特殊情況下，如介質(zhì)中含有固體顆粒、有結(jié)晶析出或高粘度流體中才選用硬對(duì)硬的配對(duì)。當(dāng)選用一軟一硬的配對(duì)時(shí)硬環(huán)端面的寬度比軟環(huán)寬，在硬對(duì)硬的材質(zhì)中可不受此限制。為減少泄漏量和機(jī)械雜質(zhì)進(jìn)入密封端面的可能性，盡量采用內(nèi)裝內(nèi)流式密封結(jié)構(gòu)S選擇導(dǎo)熱性良好的材料做動(dòng)環(huán)，以散出較多的熱量，降低密封端面的溫度。為保證密封環(huán)的整體強(qiáng)度和剛度，環(huán)的壁厚不可太薄。對(duì)于導(dǎo)熱性良好的材料，增加環(huán)厚有利散熱；對(duì)于導(dǎo)熱性欠佳的材料厚度可小些。對(duì)于所受壓力較高的密封環(huán)，要從力學(xué)角度另行設(shè)計(jì)，必要時(shí)采取加固措施。環(huán)的形狀要軸對(duì)稱，以減少其不對(duì)稱的機(jī)械變形和熱變形。動(dòng)環(huán)做補(bǔ)償環(huán)時(shí)，例如國(guó)產(chǎn)104和B104型密封（圖13、圖14），動(dòng)環(huán)和軸（軸套）的（直徑）間隙為0．40～0．60mm，以防止動(dòng)環(huán)在工作中卡住而失去補(bǔ)償能力；靜環(huán)內(nèi)徑要比軸（軸套）大l～2mm，避免兩者摩擦。密封端面的寬度是個(gè)重要參數(shù)，要綜合考慮。三、密封端面的寬度要考慮的因素密封端面的寬度一般是首先決定軟面的寬度，硬面寬度自不待說(shuō)。泄漏量與端面寬度關(guān)系不大。但是，從產(chǎn)生的摩擦熱量來(lái)說(shuō)窄一些較好，產(chǎn)生的熱量較少，溫度梯度小，熱變形也小。銅陵212釜用機(jī)械密封</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2577528.html</p></div></div></div></div></div><div id="apme8f7" 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