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src="https://tyunfile.71360.com/UploadFile/shyouwei/637393245692440551/9464897.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="cwwqbes" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>自動(dòng)焊接液壓系統(tǒng)維修,液壓</p><p><span>***更新：</span>2021-01-25 05:12:12</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="7eaoins" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海油威液壓成套設(shè)備有限公司</a></p><p><span>聯(lián)系人：</span>楊海</p><p><span>郵箱: </span>69800595@qq.com</p><p><span>電話: </span>15821141338</p><p><span>傳真: </span>021_33656072</p><p><span>網(wǎng)址: </span>http://koto-sh.com.cn</p><p><span>手機(jī): </span>021-33656071</p><p><span>地址: </span>金海公路3265號(hào)18幢7層</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="skejoib" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="1fgk3hv" class="box"><p><p style="text-indent:25px">液壓系統(tǒng)的常見故障：空穴現(xiàn)象?，F(xiàn)象：如果液壓系統(tǒng)中滲入空氣，液體中的氣泡隨著液流運(yùn)動(dòng)到壓力較高的區(qū)域時(shí)，氣泡在較高壓力作用下將迅速破裂，從而引起局部液壓沖擊，造成噪聲和振動(dòng)，自動(dòng)焊接液壓系統(tǒng)維修。另外，由于氣泡破壞了液流的連續(xù)性，降低了油管的通油能力，造成流量和壓力的波動(dòng)，使液壓元件承受沖擊載荷，影響其使用壽命。原因：液壓油中總含有一定量的空氣，通?？扇芙庥谟椭?，也可以氣泡的形式混合于油中，自動(dòng)焊接液壓系統(tǒng)維修。當(dāng)壓力低于空氣分離壓力時(shí)，溶解于油中的空氣分離出來，自動(dòng)焊接液壓系統(tǒng)維修，形成氣泡；當(dāng)壓力降至油液的飽和蒸氣壓力以下時(shí)，油液會(huì)沸騰而產(chǎn)生大量氣泡。這些氣泡混雜于油液中形成不連續(xù)狀態(tài)，這種現(xiàn)象稱為空穴現(xiàn)象。部位：吸油口及吸油管中低于大氣壓處，易產(chǎn)生氣穴；油液流經(jīng)節(jié)流口等狹小縫隙處時(shí)，由于速度的增加，使壓力下降，也會(huì)產(chǎn)生氣穴。危害：氣泡隨油液運(yùn)動(dòng)到高壓區(qū)，在高壓作用下迅速破裂，造成體積突然減小、周圍高壓油高速流過來補(bǔ)充，引起局部瞬間沖擊，壓力和溫度急劇升高并產(chǎn)生強(qiáng)烈的噪聲和振動(dòng)。措施：要正確設(shè)計(jì)液壓泵的結(jié)構(gòu)參數(shù)和泵的吸油管路，盡量避免油道狹窄和急彎，防止產(chǎn)生低壓區(qū)；合理選用機(jī)件材料，增加機(jī)械強(qiáng)度、提高表面質(zhì)量、提高抗腐蝕能力。液壓試驗(yàn)臺(tái)特點(diǎn)：試壓現(xiàn)場(chǎng)采用攝像機(jī)實(shí)時(shí)監(jiān)控，可以實(shí)現(xiàn)無人試壓現(xiàn)場(chǎng)。自動(dòng)焊接液壓系統(tǒng)維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="自動(dòng)焊接液壓系統(tǒng)維修,液壓" src="https://tyunfile.71360.com/UploadFile/shyouwei/637393245692440551/9464897.png"></div><p style="text-indent:25px">一個(gè)液壓系統(tǒng)的好壞不*取決于系統(tǒng)設(shè)計(jì)的合理性和系統(tǒng)元件性能的的優(yōu)劣，還因系統(tǒng)的污染防護(hù)和處理，系統(tǒng)的污染直接影響液壓系統(tǒng)工作的可靠性和元件的使用壽命，據(jù)統(tǒng)計(jì)，國內(nèi)外的的液壓系統(tǒng)故障大約有70%是由于污染引起的。、油液污染對(duì)系統(tǒng)的危害主要如下：元件的污染磨損：油液中各種污染物引起元件各種形式的磨損，固體顆粒進(jìn)入運(yùn)動(dòng)副間隙中，對(duì)零件表面產(chǎn)生切削磨損或是疲勞磨損。高速液流中的固體顆粒對(duì)元件的表面沖擊引起沖蝕磨損。油液中的水和油液氧化變質(zhì)的生成物對(duì)元件產(chǎn)生腐蝕作用。此外，系統(tǒng)的油液中的空氣引起氣蝕，導(dǎo)致元件表面剝蝕和破壞。開式液壓系統(tǒng)廠商液壓站又稱液壓泵站。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="自動(dòng)焊接液壓系統(tǒng)維修,液壓" src="https://tyunfile.71360.com/UploadFile/shyouwei/637393246094999231/17866.png"></div><p style="text-indent:25px">一個(gè)系統(tǒng)在正式投入之前一般都要經(jīng)過沖洗，沖洗的目的就是要掃除殘留在系統(tǒng)內(nèi)的污染物、金屬屑、纖維化合物、鐵心等，在起初兩小時(shí)工作中，即使沒有完全損壞系統(tǒng)，也會(huì)引起一系列故障。所以應(yīng)該按下列步驟來清洗系統(tǒng)油路：1）用一種易干的清潔溶劑清洗油箱，再用經(jīng)過過濾的空氣掃除溶劑殘?jiān)?）清洗系統(tǒng)全部管路，某些情況下需要把管路和接頭進(jìn)行浸漬。3）在管路中裝油濾，以保護(hù)閥的供油管路和壓力管路。4）在集流器上裝一塊沖洗板以代替精密閥，如電液伺服閥等。5）檢查所有管路尺寸是否合適，連接是否正確。</p><p style="text-indent:25px">液壓系統(tǒng)的參數(shù)測(cè)量方法：第1步：測(cè)壓力，首先將檢測(cè)回路的軟管接頭與雙球閥三通螺紋接口旋緊接通。打開球閥2，關(guān)死溢流閥3，切斷回油通道，這時(shí)從壓力表上可直接讀出所測(cè)點(diǎn)的壓力值（為系統(tǒng)的實(shí)際工作壓力）。第2步：測(cè)流量和溫度——慢慢松開溢流閥7手柄，再關(guān)閉球閥1。重新調(diào)整溢流閥7，使壓力表4讀數(shù)為所測(cè)壓力值，此時(shí)流量計(jì)5讀數(shù)即為所測(cè)點(diǎn)的實(shí)際流量值。同時(shí)溫度計(jì)6上可顯示出油液溫度值。第3步：測(cè)轉(zhuǎn)速（速度）——不論泵、馬達(dá)或缸其轉(zhuǎn)速或速度*取決于兩個(gè)因素，即流量和它本身的幾何尺寸（排量或面積），所以只要測(cè)出馬達(dá)或缸的輸出流量（對(duì)泵為輸入流量），除以其排量或面積即得到轉(zhuǎn)速或速度值。日常查找液壓系統(tǒng)故障的傳統(tǒng)方法是邏輯分析逐步逼近斷。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="自動(dòng)焊接液壓系統(tǒng)維修,液壓" src="https://tyunfile.71360.com/UploadFile/shyouwei/637393246241052065/8141622.png"></div><p style="text-indent:25px">液壓油流經(jīng)各類液壓閥時(shí)不可避免的存在著壓力損失和流量損失，這一部分的能量損失在全部能量損失中占有較大的比重。因此，合理選擇液壓器，調(diào)整壓力閥的壓力也是降低功率損失的一個(gè)重要方面。流量閥按系統(tǒng)中流量調(diào)節(jié)范圍選取并保證其較小穩(wěn)定流量能滿足使用要求，壓力閥的壓力在滿足液壓設(shè)備正常工作的情況下，盡量取較低的壓力。如果執(zhí)行器具有調(diào)速的要求，那么在選擇調(diào)速回路時(shí)，既要滿足調(diào)速的要求，又要盡量減少功率損失。常見的調(diào)速回路主要有：節(jié)流調(diào)速回路，容積調(diào)速回路，容積節(jié)流調(diào)速回路。其中節(jié)流調(diào)速回路的功率損失大，低速穩(wěn)定性好。而容積調(diào)速回路既無溢流損失，也無節(jié)流損失，效率高，但低速穩(wěn)定性差。如果要同時(shí)滿足兩方面的要求，可采用差壓式變量泵和節(jié)流閥組成的容積節(jié)流調(diào)速回路，并使節(jié)流閥兩端的壓力差盡量小，以減小壓力損失。液壓泵的泄油管應(yīng)直接接油箱，回油背壓應(yīng)不大于0.05MPa。自動(dòng)焊接液壓系統(tǒng)維修</p><p style="text-indent:25px">液壓試驗(yàn)臺(tái)使用前檢查：確認(rèn)電源已接通，電源指示燈亮。自動(dòng)焊接液壓系統(tǒng)維修</p><p style="text-indent:25px">液壓系統(tǒng)的常見故障：液壓沖擊。原因：執(zhí)行元件換向及閥門關(guān)閉使流動(dòng)的液體因慣性和某些液壓元件反應(yīng)動(dòng)作不夠靈敏而產(chǎn)生瞬時(shí)壓力峰值，稱液壓沖擊。其峰值可超過工作壓力的幾倍。危害：引起振動(dòng)，產(chǎn)生噪聲；使繼電器、順序閥等壓力元件產(chǎn)生錯(cuò)誤動(dòng)作，甚至造成某些元件、密封裝置和管路損壞。措施：找出沖擊原因避免液流速度的急劇變化。延緩速度變化的時(shí)間，估算出壓力峰值，采用相應(yīng)措施。如將流動(dòng)換向閥和電磁換向閥聯(lián)用，可有效地防止液壓沖擊。自動(dòng)焊接液壓系統(tǒng)維修</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2999480.html</p></div></div></div></div></div><div id="8a7fzx7" class="page-right twoColRt"><div id="pt05dys" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="25prx81" 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) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="ds9bzr7" 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