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<script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://m.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu 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class="proBig"><div id="7cw3mov" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784250039062/8363438.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="3s2g8gi" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784250039062/8363438.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="rbtdkm7" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>產品關鍵詞：</span>徐州汽車脫脂劑,脫脂劑</p><p><span>***更新：</span>2020-08-27 16:23:50</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bfhoeln" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海昊琳化工有限公司</a></p><p><span>聯(lián)系人：</span>彭**</p><p><span>郵箱: </span>SHHL668@163.com</p><p><span>電話: </span>13917612469</p><p><span>傳真: </span>021_</p><p><span>網址: </span>http://haolin123.shop.88360.com</p><p><span>手機: </span>021-59220920</p><p><span>地址: </span>白鶴鎮(zhèn)白石公路1360路28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="wlifhoq" class="page-proshow02"><p class="title">詳細說明</p><div id="gvskwdf" class="box"><p><p style="text-indent:25px">脫脂劑按照性狀可分為溶劑型和水基兩種，其中水基脫脂劑可分為酸性，中性，堿性脫脂劑。脫脂在涂裝前處理乃至整個涂裝工藝中占有極其重要的地位，其作用表現(xiàn)在：影響磷化質量，磷化過程完全取決于磷化槽液與工件表面的良好接觸，而要確保做到這一點，就必須在磷化之前或磷化過程中把工件表面的各種油脂、臟物、銹、氧化皮等異物徹底去除。如果工件表面的異物末被徹底去除干凈，這些異物就會對磷化起到一種機械屏障作用，徐州汽車脫脂劑，延緩成膜速度，影響磷化晶體與工件表面的結合，徐州汽車脫脂劑，徐州汽車脫脂劑，甚至完全阻礙磷化槽液與工件表面接觸，導致不能形成磷化膜。脫脂劑按酸堿度分類：酸性脫脂劑是指PH值低于7的脫脂劑。徐州汽車脫脂劑</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州汽車脫脂劑,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784250039062/8363438.png"></div><p style="text-indent:25px">當購買金屬脫脂劑時，我們可以從金屬脫脂劑的外觀、PH值、消泡性能、漂洗性能、總堿度的檢測來綜合判斷金屬脫脂劑的質量如何。具體方法如下：外觀：將液體金屬脫脂劑在15~35℃條件下放置24h后觀察，主要是觀察脫脂劑溶液是否均勻，有無分層和沉淀現(xiàn)象。檢查粉狀脫脂劑外觀時，主要是觀察是否均勻、松散，有無堅硬團塊。pH值：不同的金屬在堿性金屬脫脂劑中具有不同的腐蝕界限，如鋼鐵工件在堿性金屬脫脂劑中就易被腐蝕，因此必須根據工件的材質選擇合適pH的金屬脫脂劑。當工件是由鋼和其他金屬構成的組合體時，則必須考慮組合體各部件工作材質對金屬脫脂劑pH值的要求。徐州汽車脫脂劑脫脂除油的工作復雜，影響面廣，在許多情況下要求清洗質量嚴格，甚至要達到行業(yè)規(guī)定的標準。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州汽車脫脂劑,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784304345703/653841.png"></div><p style="text-indent:25px">金屬脫脂除油是機械涂裝行業(yè)前處理工藝中較關鍵的工序之一。金屬表面脫脂的程度將直接影響磷化序和涂裝質量。它利用高效液體脫脂劑對油脂和污物的皂化、潤濕、乳化、滲透、卷離、分散和增溶等作用把工件表面的各種油脂、灰塵泥沙、金屬粉末手汗及其工件在加工過程中所粘附的油性臟物高效的去除脫離徹底。隨著環(huán)保要求的提高，目前比較流行研究應用生物可降解表面活性劑，對于活性劑，清洗劑要求無磷、無硅和低COD/BOD排放。雖然此方面的研究工作已開展30多年，但是目前還沒有一種無磷助劑能夠同時保證去污能力、對人體和環(huán)境無危害和潛在危害、成本較低這3項要求?，F(xiàn)在已研究出無磷脫脂劑，但成本高，應用還有一定的阻力。</p><p style="text-indent:25px">脫脂劑的合理設計水槽。安裝一個溢流口(供水洗過程中保持溢流狀態(tài))和中間漏斗，進水口位于操作面，水管直通槽底至槽高2/3處，有利于新鮮水循環(huán)良好。循環(huán)攪拌。采用空氣攪拌裝置(空氣從槽底部通人)或循環(huán)過濾器(過濾精度為250μm,濾袋中放置不銹鋼長久磁棒，濾掉水中的油泥、鐵屑等)。如選用40AFB-26循環(huán)泵，流量7.2m3/h，管路輸送壓力2.5Pa。排放和清洗水槽。水槽每日或隔日放空1次，半個月清洗1次。保持水質良好(除油脫脂一道水洗pH≤10;二道水洗pH=9),污染度小(水的總堿度<1點)。以槽內泡沫多少和pH值大小等來判斷水的清潔度。檢測頻率2次/周。化學性質根據油污能否與脫脂劑發(fā)生化學反應而分為可皂化油污和不可皂化油污。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="徐州汽車脫脂劑,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784219404297/1022548.png"></div><p style="text-indent:25px">金屬在進行化學處理、電鍍或涂敷之前，要用脫脂劑脫除金屬表面上的油脂及礦物油。脫脂劑是由堿、螯合劑及表面活性劑組成。脫脂劑未使用前，脫脂劑中不含有鐵元素的；用脫脂劑清洗鍍錫基板表面油污、鐵粉雜質后，伴隨著脫脂劑中殘鐵含量的逐漸增加，脫脂劑中清洗、脫脂能力逐漸減弱。對于脫脂劑中殘鐵含量檢測，現(xiàn)有技術中通常用化學手工方法分析，因基體復雜要加入各種掩蔽劑進行處理，步驟繁瑣，不易掌握，分析結果準確性差，且檢測周期較長，不利于現(xiàn)場快速監(jiān)控分析。脫脂劑按照性狀可分為溶劑型和水基兩種，其中水基脫脂劑可分為酸性，中性，堿性脫脂劑。徐州汽車脫脂劑</p><p style="text-indent:25px">脫脂除油的對象也很多，有各種金屬材料各不同，有由各種金屬制造的大小不同、形狀復雜程度不同的零部件。徐州汽車脫脂劑</p><p style="text-indent:25px">脫脂劑的脫脂時間在脫脂操作中，必須保證有足夠的脫脂時間，壓力噴射脫脂時間一般為1.5~3分鐘，浸漬脫脂為3~5分鐘（視油污的種類和多少而定）。增加脫脂時間，即延長脫脂液與油污的接觸時間，從而提高脫脂效果。油污越多，脫脂時間就需越長。在流水線作業(yè)中，往往不允許采用太長的時間，因此一般先用噴射予脫脂1分鐘，再用浸漬脫脂3分鐘。在采用某些種類表面活性劑的脫脂液中，過高的溫度會使表面活性劑析出聚集如同油珠附著在表面上，造成磷化膜發(fā)花不均勻。徐州汽車脫脂劑</p><p style="text-indent:25px">上海昊琳化工有限公司成立于2008-10-27，是一家生產型的公司。公司業(yè)務分為環(huán)保化學鍍鎳，脫脂清洗劑，拋光鈍化劑，鋁浸鋅液等，目前不斷進行創(chuàng)新和服務改進，為客戶提供優(yōu)質的產品和服務。公司將不斷增強企業(yè)重點競爭力，努力學習行業(yè)先進知識，遵守行業(yè)規(guī)范，植根于化工行業(yè)的發(fā)展。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造高品質服務體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: 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