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src="https://tyunfile.71360.com/UploadFile/wlmuhyd/637260258212460938/6784610.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2i3jgfw" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/wlmuhyd/637260258212460938/6784610.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="hbyqx8c" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>新疆維吾爾自治區(qū)</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>烏魯木齊管道防腐專賣店</p><p><span>***更新：</span>2020-05-30 05:22:06</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="7jikmqh" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">烏魯木齊市昊業(yè)達貿易有限責任公司銷售</a></p><p><span>聯(lián)系人：</span>劉哲</p><p><span>郵箱: </span></p><p><span>電話: </span>13325555152</p><p><span>傳真: </span>0991_</p><p><span>網址: </span></p><p><span>手機: </span>0991-6822890</p><p><span>地址: </span>新華凌市場鋼材區(qū)19-2號</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="s2sugsu" class="page-proshow02"><p class="title">詳細說明</p><div id="mgik7of" class="box"><p><p style="text-indent:25px">犧牲陽極法是采用比被保護金屬電極電位更負的金屬與被保護金屬連接，兩者在電解液中形成原電池。電位較負的金屬（如鎂、鋅、鋁及其合金）成為陽極，烏魯木齊管道防腐專賣店，在輸出電流的過程中逐漸損耗掉，被保護的管道金屬成為陰極而免遭腐蝕，所以稱電位較負的金屬為犧牲陽極。其接線如圖4。地下管道采用犧牲陽極保護，其決定要素是陽極發(fā)生電流、陽極數量和保護長度等。當陽極種類確定后，影響上述參數的是陽極接地電阻和與該陽極保護管段區(qū)間的漏泄電阻。前者取決于土壤電阻率，后者取決于管道涂層電阻和涂層的施工質量。犧牲陽極使用壽命與重量有關，烏魯木齊管道防腐專賣店，視需要可用幾年至幾十年。犧牲陽極具有投資省、管理簡便，烏魯木齊管道防腐專賣店、不需要外電源、防止干擾腐蝕效果好等優(yōu)點，所以在地下金屬管道防腐中得到普遍應用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烏魯木齊管道防腐專賣店" src="https://tyunfile.71360.com/UploadFile/wlmuhyd/637260258212460938/6784610.png"></div><p style="text-indent:25px">保護方法編輯管道陰極保護與臨時保護由于管道施工周期長，一般要求，如果土壤電阻率小于20Q．m，就要安裝鎂陽極進行臨時保護，并通過測試樁與管道連接。而當外加電流陰極保護投用后，再拆除臨時保護。鎂陽極的開路電位一般比-l. 55v CSE更負，由于外加電流電位一般控制在一1.55V CSE之上（正于一155v）-所以，鎂陽極的存在不會對陰極保護產生負面影響。相反，如果管道受到交流電流干擾，鎂陽極還起著排流接地的作用。但值得注意的是，盡管鎂陽極消耗的速度會因外加電流陰極保護的存在而變慢，但時間久了也會消耗盡，那時，只有鋼芯與管道連接，會成為管道的漏電點。所以，一般都要求在外加電流陰極保護投用后，拆除臨時陰保。臨時陰保的存在還會對日后的管道斷電電位測量帶來困難。技術要求對于施加陰極保護的管道要做到經濟合理跟技術可行，這就要滿足一定的條件，如下：①要保證管道縱向連接的導電性②管道的覆蓋層要保證有足夠的電阻③要保證管道跟其他低電阻接地裝置的電絕緣性</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烏魯木齊管道防腐專賣店" src="https://tyunfile.71360.com/UploadFile/wlmuhyd/637260258319931641/853338.png"></div><p style="text-indent:25px">首先，環(huán)氧煤瀝青漆涂層：具體如下：1）現(xiàn)場施工中，環(huán)氧樹脂的固化受溫度影響，固化較慢，施工工期長。2）由于在施工中添加大批溶劑，輕易給某些施工單位提供偷工減料（多加溶劑，沖稀涂料，升高造價）的時機。3）由于是雙組份，現(xiàn)場施工時會發(fā)生固化劑配比不準或攪拌不勻，易形成固化不好或固化后質量不均。4）防腐層中采用玻璃布增強，玻璃布含蠟，影響層間粘接力，施工進程中發(fā)生玻璃纖維，易損傷施工工人皮膚，一般工人不愿意也不好好干。其次，水泥砂漿內襯防腐：管道內壁采用此防腐形式容易出現(xiàn)空鼓的情況（容易出現(xiàn)***等），抗?jié)B水能力差，整體性不強。對環(huán)境要求比較高，需要在10℃以上才能施工。由于水泥砂漿中水泥用量較多，收縮性大，當水泥砂漿找平層硬化收縮所產生的內應力大于砂漿與混凝土的粘結力時，砂漿找平層與混凝土之間起殼空鼓。如果施工操作不當，起殼空鼓現(xiàn)象更為嚴重。久而久之，特別是受振動后，起殼空鼓范圍擴大，導致防腐層起殼開裂脫落。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="烏魯木齊管道防腐專賣店" src="https://tyunfile.71360.com/UploadFile/wlmuhyd/637260258410253906/9490709.png"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/84395.html</p></div></div></div></div></div><div id="uewykmd" class="page-right twoColRt"><div id="smtac8i" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="lkmyahe" class="recomPic likePro"><a 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