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<script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.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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clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/first-_yjkc/">冶金礦產</a>?<a href="http://www.cdcfah.com/cp/second-yjkc_ysjshj/">有色金屬合金</a>?<a href="http://www.cdcfah.com/cp/third-ysjshj_niehejin/">鎳合金</a>?上海含鎳合金費用歡迎來電上海弘夏電鍍供應</p><div id="8exndks" class="leftbox clearfix"><h1>上海含鎳合金費用歡迎來電上海弘夏電鍍供應</h1><div id="ip7ghoi" class="proBig"><div id="4sn4sk9" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhxdd/637339477066816406/187249.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="s0edah5" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shhxdd/637339477066816406/187249.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="uieugid" 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>上海含鎳合金費用,電鍍鋅鎳合金</p><p><span>***更新：</span>2021-02-06 06:11:45</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ff03xcc" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海弘夏電鍍有限公司銷售</a></p><p><span>聯(lián)系人：</span>施經理</p><p><span>郵箱: </span>www.platessy@163.com</p><p><span>電話: </span>15221395693</p><p><span>傳真: </span>021_</p><p><span>網址: </span>http://shhxdd.shop.88360.com</p><p><span>手機: </span>021-58088779</p><p><span>地址: </span>大團鎮(zhèn)大泥公路139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="bcxzgd8" class="page-proshow02"><p class="title">詳細說明</p><div id="bhi5kyu" class="box"><p><p style="text-indent:25px">由于鍍液溫度高，鍍件**鍍銅后若不帶酸入光亮鎳槽，銅鍍層將發(fā)生氧化，而氧化的銅層鍍光亮鎳后會產生白霧。隨著生產的連續(xù)進行，硫酸活化液濃度逐漸變低，光亮鎳鍍液pH值緩慢上升，活化能力也逐漸降低，在鍍件的邊緣，由于光亮鎳鍍液溫度較高，整體活化能力降低，銅層產生間斷、不規(guī)則的氧化，隨后在鍍光亮鎳時就出現(xiàn)了白斑，這是鍍件出現(xiàn)白斑的根本原因。突出在鍍鎳層中間的顆粒白斑一種高碳物，高碳物可能是熱處理滲碳過程及電鍍前處理時酸洗過度產生的，上海含鎳合金費用。突出在鍍層表面的顆粒是由于清洗不徹底，上海含鎳合金費用，使得鍍件表面的顆粒掉進鍍液中，上海含鎳合金費用，在電鍍過程中通過攪拌作用，使這些游離于鍍液中的顆粒與鎳離子共沉積，從而使鍍層表面出現(xiàn)白斑。電鍍鋅鎳合金含鎳量13％左右的鋅鎳合金是鍍鋅層的5倍以上。上海含鎳合金費用</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海含鎳合金費用,電鍍鋅鎳合金" src="https://tyunfile.71360.com/UploadFile/shhxdd/637339477066816406/187249.png"></div><p style="text-indent:25px">電鍍鋅鎳合金鍍層有***、麻點與脫皮鍍前處理不良。熱處理工件表面不可避免地會粘附一層油污，當灰塵落在表面上，并與油脂混粘在一起，時間久了很難清洗干凈，從而使工件表面形成不明顯的細小油斑，施鍍時氣泡滯留其上形成***。另外采用網帶式電阻爐淬火時，工件表面的油污與灰塵等雜質顆粒混粘在一起，燒結成頑固的固體油垢，硝鹽回火時，以上油垢又與硝基鹽形成頑固的熱聚合物，電鍍時很難把以上污物徹底除凈，氫氣泡易粘附在污物上面，難以排出，從而使鍍層產生***與麻點現(xiàn)象，且隨著氣泡逐漸長大，鍍層會自動脹破，產生脫皮現(xiàn)象。浦東新區(qū)易操作加工鋅鎳鋅鎳合金具有更好的耐磨性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海含鎳合金費用,電鍍鋅鎳合金" src="https://tyunfile.71360.com/UploadFile/shhxdd/637339476959169922/5401608.png"></div><p style="text-indent:25px">鋅鎳合金(通常含質量分數(shù)10%~15%的Ni)的耐蝕性很高(是鋅鍍層的3~6倍)，其硬度為200~250HV，比堿性鋅酸鹽鍍鋅層的硬度(90~120HV)高，而且具有低氫脆性以及良好的焊接性和可機械加工性。Zn–Ni合金電鍍的工藝流程為：化學除油─二級逆流水洗─脫脂酸洗─三級逆流水洗─陽極電解除油─二級逆流水洗─活化─三級逆流水洗─浸堿─電鍍Zn–Ni合金─四級逆流水洗─浸純水─鈍化─純水洗2道─熱純水洗─壓縮空氣吹干─烘干。在配槽成本方面，堿性鋅的成本為1.2元/L左右，成本與使用添加劑的量有很大關系。Zn–Ni合金成本是7~8元/kg，是堿性鋅酸鹽鍍鋅的5倍左右，而且這只是配制鍍液的成本，如果加入冷凍、加熱等設備及鎳陽極或鍍厚鎳的鋼板陽極，其投資遠遠大于堿性鍍鋅液。</p><p style="text-indent:25px">現(xiàn)在的堿性鋅鎳合金電鍍工藝體系有焦磷酸鹽型、多聚磷酸鹽型、氨基磺酸鹽型、堿性鋅酸鹽型等。其中綜合來看應用價值較大的是堿性鋅酸鹽體系。近期業(yè)界的研究重點也是鋅酸鹽型鍍液。其組成包括:主鹽NiSO,，ZnO等)，NaOH，配位劑以及添加劑等，而尤以配位劑和添加劑重要。堿性鍍液中的配體：適當?shù)呐湮粍┘尤雺A性Zn-Ni合金電鍍液中，不僅能夠提升電流效率，改善分散能力，改善鍍層的質量，穩(wěn)定鍍液。同時配位劑可以調整Zn和Ni的析出電位，不僅能使它們共沉積，也能調整鍍層中的鋅鎳質量比?？晒┻x用的配位劑種類如下四種:①有機多元磷酸鹽;②羥基羧酸類;③多胺類;④合成的鰲合劑;⑤胺醇類;⑥多元醇化合物;⑦多聚膦酸鹽;⑧脂肪族胺類化合物;⑨氨基羧酸.類。電鍍鋅鎳合金涂層本身具有非常低的腐蝕速率。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海含鎳合金費用,電鍍鋅鎳合金" src="https://tyunfile.71360.com/UploadFile/shhxdd/637339476771845703/8505200.png"></div><p style="text-indent:25px">鋼鐵作為人類社會中較重要、使用比較普遍的金屬，也是遭受腐蝕損失較為嚴重的金屬。人們針對其開發(fā)了很多防腐技術，尤以鍍Zn、Ni、Ti、Sn.Cd等及其合金具有表示性。其中電鍍鋅及其合金鍍層以其好的耐蝕性、外觀良好、鈍化后裝飾性好、成本低等優(yōu)點，在鋼鐵材料的防腐中得到了較為普遍的采用。鍍鋅鋼板由于其好的加工性能，抗沖壓能力和耐腐蝕能力，在汽車上的應用非常普遍，歐美乘用車白車身鍍鋅鋼板的應用比例高達90%，主要應用于汽車的發(fā)動機倉蓋、后蓋、汽車門內板、復雜的車底板、油底殼、輪罩、前后翼子板等重要車身零件。采用酸性鋅鎳合金電鍍工藝其生產成本可降低50%左右。上海含鎳合金費用</p><p style="text-indent:25px">電鍍鋅鎳合金的技術指標:鈍化膜分為白色、黑色和五彩色三種。上海含鎳合金費用</p><p style="text-indent:25px">電鍍技術常用于五金配件、金屬零件、珠寶首飾、管材等方面，電鍍在現(xiàn)代制造業(yè)中發(fā)揮著巨大作用，例如：鍍鋅穿線管能夠具備防腐性能、鍍金產品往往具備很好的反光性和導電性，鍍銀產品往往非常美觀、導電率高。大家都知道電鍍的處理工藝比較復雜，一旦處理不當會導致電鍍產品性能不良。電鍍加工中常見的兩個故障：電鍍鍍前處理不當。熱處理工件表面不可避免地會粘附一層油污，當灰塵落在表面上，并與油脂混粘在一起，時間久了很難清洗干凈，從而使工件表面形成不明顯的細小油斑，施鍍時氣泡滯留其上形成一些現(xiàn)象。另外采用網帶式電阻爐淬火時，工件表面的油污與灰塵等雜質顆?；煺吃谝黄?，燒結成頑固的固體油垢，硝鹽回火時，以上油垢又與硝基鹽形成頑固的熱聚合物，電鍍時很難把以上污物徹底除凈，氫氣泡易粘附在污物上面，難以排出，從而使鍍層產生麻點現(xiàn)象，且隨著氣泡逐漸長大，鍍層會自動脹破，產生脫皮現(xiàn)象。上海含鎳合金費用</p></p><br 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