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src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="hbtqs8n" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525788876953/1391639.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="e2mg2wl" 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>黃岡高速反應(yīng)釜用機(jī)械密封,釜用機(jī)械密封</p><p><span>***更新：</span>2021-01-05 09:13:54</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="jfxu3r7" 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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="jnu3vxe" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8xj3kco" class="box"><p><p> 焊接金屬波紋管的彈率的計(jì)算由于焊接金屬波紋管機(jī)械密封不用彈簧，彈性力完全由波紋管產(chǎn)生，因此波紋管設(shè)計(jì)時(shí)要考慮其彈率。一般將波紋管的彈率設(shè)計(jì)得小些，當(dāng)要求一定的彈力時(shí)，波紋管的壓縮量就要適當(dāng)?shù)丶哟?。運(yùn)轉(zhuǎn)相當(dāng)長(zhǎng)時(shí)間后，如果密封端面磨損，波紋管自動(dòng)補(bǔ)償，黃岡高速反應(yīng)釜用機(jī)械密封，而彈力降低不會(huì)大，始終保持密封端面有足夠的壓比。為保證足夠的彈性力，壓縮量在10mm左右，黃岡高速反應(yīng)釜用機(jī)械密封，低不能低于6mm。工作時(shí)每個(gè)波的變形以小為宜，為保證一定的壓縮量，要適當(dāng)增加波數(shù)，保持波距，黃岡高速反應(yīng)釜用機(jī)械密封。一般波數(shù)取16～20，溫度和壓力高時(shí)波數(shù)宜取多。波紋管的彈率是幾何形狀和材料的函數(shù)，常用下式計(jì)算：k=πEt3(c)d2/2nB3d1式中k——波紋管彈率，N／mm；E——材料在工作溫度下的彈性模量，N/mm2；t——波片厚度，mmn——波紋管波數(shù)；d1、d2——分別為波紋管的內(nèi)外徑，mm；B——波紋管的片寬，mm。B=（d2-d1）／2公式中沒(méi)有考慮波片的斷面形狀等因素，因此有一定的誤差。實(shí)際工作中可在彈簧測(cè)力計(jì)上測(cè)量其彈率。普通彈簧的彈率計(jì)算在一般“機(jī)械零件”書(shū)上能找到，故在此不作介紹。非對(duì)稱(chēng)型波紋管焊接金屬波紋管機(jī)械密封以其結(jié)構(gòu)簡(jiǎn)單、伸縮性好和耐高溫等優(yōu)點(diǎn)，得到了日益廣的應(yīng)用，尤其是高溫泵的密封中。湘潭212釜用機(jī)械密封件。黃岡高速反應(yīng)釜用機(jī)械密封</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="黃岡高速反應(yīng)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> 為了使機(jī)械密封做到密封性能可靠，使用壽命長(zhǎng)，對(duì)其零件的尺寸、配合、形位公差等均有相應(yīng)的要求。關(guān)鍵尺寸一定要嚴(yán)格按公差要求加工，非關(guān)鍵尺寸在不影響密封性能和安裝尺寸的前提下，可適當(dāng)降低要求，這對(duì)于降低成本、普及推廣機(jī)械密封技術(shù)均有好處。根據(jù)國(guó)內(nèi)技術(shù)標(biāo)準(zhǔn)規(guī)定的機(jī)械密封技術(shù)條件及制造水平，參考國(guó)外同類(lèi)產(chǎn)品的加工尺寸及精度要求，對(duì)常用機(jī)械密封零件的公差配合及技術(shù)要求介紹如下。一、機(jī)械密封零件的公差與配合關(guān)于機(jī)械密封零件的公差與配合，以?xún)?nèi)裝式泵用機(jī)械密封零件為例作介紹，其他結(jié)構(gòu)類(lèi)型機(jī)械密封的主要零件配合及公差均可參考，并根據(jù)情況做適當(dāng)調(diào)整，機(jī)械密封零件的公差與配合如圖9-1所示。①安裝機(jī)械密封軸徑公差；②彈簧座內(nèi)徑與軸公差；③推環(huán)內(nèi)徑與軸的配合公差；④推環(huán)接觸密封圈處端面的內(nèi)徑偏差；⑤推環(huán)接觸密封圈處端面的外徑偏差；⑥傳動(dòng)套內(nèi)徑公差；⑦動(dòng)環(huán)安裝密封圈處內(nèi)徑公差；⑧動(dòng)環(huán)內(nèi)徑與軸的配合公差；⑨傳動(dòng)套傳動(dòng)的動(dòng)環(huán)外徑公差；⑩撐環(huán)內(nèi)徑公差；?撐環(huán)外徑公差；?鑲環(huán)結(jié)構(gòu)配合公差（此公差*供參考，制造時(shí)應(yīng)根據(jù)實(shí)際情況核算確定公差尺寸）；?靜環(huán)外徑與壓蓋（或殼體）的配合公差；?靜環(huán)內(nèi)徑偏差；?靜環(huán)尾部與靜環(huán)座。黃岡高速反應(yīng)釜用機(jī)械密封綏化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="黃岡高速反應(yīng)釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525362480469/9289807.png"></div><p> 在國(guó)產(chǎn)離心泵上得到了***的應(yīng)用。本教材以這兩種國(guó)產(chǎn)機(jī)械密封為主，結(jié)合其它結(jié)構(gòu)型式（包括進(jìn)口的密封），就有關(guān)的技術(shù)問(wèn)題和故障分析。第二節(jié)機(jī)械密封的基本元件密封環(huán)是動(dòng)環(huán)和靜環(huán)的總稱(chēng)（下同），是構(gòu)成機(jī)械密封主要的元件。一、密封環(huán)在很大程度上決定了機(jī)械密封的使用性能和壽命，對(duì)它提出了一些要求。1）有足夠的強(qiáng)度和剛度。在工作條件下（如壓力、溫度和滑動(dòng)速度等）不損壞，變形應(yīng)盡量的小，工作條件波動(dòng)時(shí)仍能保持密封性。2）密封端面應(yīng)有足夠的硬度和耐腐蝕性，以保證工作條件下有滿(mǎn)意的使用壽命。3）密封環(huán)應(yīng)有良好的耐熱沖擊能力。為此，要求材料有較高的導(dǎo)熱系數(shù)和較小的線(xiàn)膨脹系數(shù)，承受熱沖擊時(shí)不至于開(kāi)裂。4）密封環(huán)匹配應(yīng)有較小的摩擦系數(shù)和良好的自潤(rùn)滑性，密封環(huán)材料與密封流體還要有很好的浸潤(rùn)性。工作中如發(fā)生短時(shí)間的干摩擦，不損傷密封端面。5）密封環(huán)應(yīng)力求簡(jiǎn)單、對(duì)稱(chēng)并優(yōu)先考慮用整體型結(jié)構(gòu)。也可采用組合式（如鑲裝式）密封環(huán)，盡量避免用密封端面噴涂式結(jié)構(gòu)。6）密封環(huán)要容易加工制造，安裝和維修要方便，價(jià)格要低廉。二、摩擦副匹配要考慮的因素摩擦副一般都選擇一軟一硬的配對(duì)。目前軟環(huán)多選用破一石墨（以下簡(jiǎn)稱(chēng)石墨）。</p><p> 由介質(zhì)壓力變化引起端面比壓的增量大于或等于介質(zhì)壓力的增量。平衡型：載荷系數(shù)K<1的密封，也就是由介質(zhì)壓力變化引起的端面比壓的增量小于介質(zhì)壓力的增量，稱(chēng)為平衡型密封。根據(jù)密封端面的數(shù)量和布置方式可分為單端面、雙端面及多端面機(jī)械密封。兩組密封端面“背靠背”（圖10a）或“面對(duì)面”（圖10b）布置的密封叫雙端面機(jī)械密封。對(duì)于工作介質(zhì)有毒、易爆、易燃、易揮發(fā)、易結(jié)晶、高溫、低溫或工作介質(zhì)是氣體，或?qū)τ诟哒婵斩鹊拿芊?，可用雙端面密封。此時(shí)雙端面之間的密封腔引入封液進(jìn)行堵封、潤(rùn)滑和冷卻。一般情況下封液選用潔凈和潤(rùn)滑性好的介質(zhì)。二、串聯(lián)機(jī)械密封應(yīng)用的工況兩組或兩組以上同向布置的單端面機(jī)械密封組成串聯(lián)機(jī)械密封（圖11）。這種密封方式使密封腔的壓力逐級(jí)降低，介質(zhì)不至外漏。串聯(lián)密封一般情況下很少采用，只有在壓力很高時(shí)采用。補(bǔ)償機(jī)構(gòu)為波紋管，密封環(huán)（動(dòng)環(huán)或靜環(huán)）和波紋管制成一個(gè)整體，中間沒(méi)有輔助密封圈（見(jiàn)圖8）稱(chēng)為波紋音式機(jī)械密封。波紋音式機(jī)械密封減少了一個(gè)泄漏點(diǎn)；同時(shí)減少了補(bǔ)償機(jī)構(gòu)的摩擦阻力，改善了追隨性；對(duì)于焊接金屬波紋管密封（圖8b）使用溫度不受輔助密封圈的限制；對(duì)于四氟波紋管密封（圖8a）可用于腐蝕性介質(zhì)中。德州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="黃岡高速反應(yīng)釜用機(jī)械密封,釜用機(jī)械密封" src="https://tyunfile.71360.com/UploadFile/ygebgm/637327525200253906/4762674.png"></div><p> ***節(jié)機(jī)械密封原理機(jī)械密封是一種旋轉(zhuǎn)機(jī)械的軸封裝置。比如離心泵、離心機(jī)、反應(yīng)釜和壓縮機(jī)等設(shè)備。由于傳動(dòng)軸貫穿在設(shè)備內(nèi)外，這樣，軸與設(shè)備之間存在一個(gè)圓周間隙，設(shè)備中的介質(zhì)通過(guò)該間隙向外泄漏，如果設(shè)備內(nèi)壓力低于大氣壓，則空氣向設(shè)備內(nèi)泄漏，因此必須有一個(gè)阻止泄漏的軸封裝置。軸封的種類(lèi)很多，由于機(jī)械密封具有泄漏量少和壽命長(zhǎng)等優(yōu)點(diǎn)，所以當(dāng)今世界上機(jī)械密封是這些設(shè)備主要的軸密封方式。機(jī)械密封又叫端面密封，在國(guó)家有關(guān)標(biāo)準(zhǔn)中是這樣定義的：“由至少一對(duì)垂直于旋轉(zhuǎn)軸線(xiàn)的端面在流體壓力和補(bǔ)償機(jī)構(gòu)彈力（或磁力）的作用以及輔助密封的配合下保持貼合并相對(duì)滑動(dòng)而構(gòu)成的防止流體泄漏的裝置。”一、機(jī)械密封的分類(lèi)機(jī)械密封近年來(lái)發(fā)展很快，根據(jù)不同的工況出現(xiàn)了各種各樣的結(jié)構(gòu)，但無(wú)論哪種結(jié)構(gòu)都由以下四部分組成：一部分是由動(dòng)環(huán)和靜環(huán)組成的密封端面，有時(shí)也稱(chēng)為摩擦副。第二部分是由彈性元件為主要零件組成的緩沖補(bǔ)償機(jī)構(gòu)，其作用是使密封端面緊密貼合。第三部分是輔助密封圈，其中有動(dòng)環(huán)和靜環(huán)密封圈。第四部分是使動(dòng)環(huán)隨軸旋轉(zhuǎn)的傳動(dòng)機(jī)構(gòu)。機(jī)械密封實(shí)現(xiàn)的原理如圖所示：軸通過(guò)傳動(dòng)座（6）和推環(huán)（4），帶動(dòng)動(dòng)環(huán)（2）旋轉(zhuǎn)，靜環(huán)(1)固定不動(dòng)。湘潭204B釜用機(jī)械密封件。黃岡高速反應(yīng)釜用機(jī)械密封</p><p style="text-indent:25px">哈爾濱207釜用機(jī)械密封件。黃岡高速反應(yīng)釜用機(jī)械密封</p><p> 七、目前應(yīng)用的密封種類(lèi)根據(jù)制造方法和材料的不同，目前應(yīng)用的密封環(huán)有整體式密封環(huán)（用同一種材料制造）、組合式密封環(huán)、表面堆焊硬質(zhì)合金和噴涂陶瓷等多種結(jié)構(gòu)。整體式密封環(huán)種類(lèi)：這種密封環(huán)因用同一種材料制成，材料的性能在密封環(huán)的各個(gè)部位均勻一致，沒(méi)有組合式密封環(huán)泄漏和分離的缺陷，也沒(méi)有電化學(xué)腐蝕的可能。制造軟環(huán)大都用石墨，制造硬環(huán)時(shí)可用各種合金鋼，如軸承鋼（GCr9）、高速鋼（W18CrV）及其他合金鋼（如40Cr、3Cr13等），也有的用合金鑄鐵（如硅、鉻和鎳鑄鐵）。采用這些材料時(shí)，都要輔之以適當(dāng)?shù)臒崽幚砉に?，以提高其硬度和耐磨性。這類(lèi)材料價(jià)格較低，如果使用恰當(dāng)，也有較長(zhǎng)的壽命。為了進(jìn)一步提高硬度和延長(zhǎng)使用壽命，可采用硬質(zhì)合金制造。常用的硬質(zhì)合金為鉆基碳化鎢，性能較好，但價(jià)格高。鋼結(jié)硬質(zhì)合金的價(jià)格較低。為了提高在腐蝕介質(zhì)中的耐蝕性，有鎳基碳化鎢，而哈氏合金有更高的耐蝕性，但價(jià)格昂貴。此外，還有用碳化硅及其他陶瓷材料制造的密封環(huán)。出現(xiàn)組合式由封環(huán)的原因碳化鎢等材料有優(yōu)良的性能，但是價(jià)格高，加工困難，限制了它的使用。為解決這個(gè)矛盾，出現(xiàn)了組合式密封環(huán)。密封端面采用硬質(zhì)合金，密封環(huán)的基體。黃岡高速反應(yīng)釜用機(jī)械密封</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2714396.html</p></div></div></div></div></div><div id="7prjaev" class="page-right 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