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href="http://www.cdcfah.com/cp/second-huagong_hxsj/">化學(xué)試劑</a>?<a href="http://www.cdcfah.com/cp/third-hxsj_qthxsj/">其他化學(xué)試劑</a>?金華化學(xué)鍍鎳封閉劑廠家值得信賴上海昊琳化工供應(yīng)</p><div id="bz37neq" class="leftbox clearfix"><h1>金華化學(xué)鍍鎳封閉劑廠家值得信賴上海昊琳化工供應(yīng)</h1><div id="82syx72" class="proBig"><div id="h83yj3v" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333783296416016/1330118.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lzqhtkg" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333783296416016/1330118.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="igxoawn" 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>金華化學(xué)鍍鎳封閉劑廠家,化學(xué)鍍鎳</p><p><span>***更新：</span>2021-02-03 03:13:26</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="8ypgcie" 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(wǎng)址: </span>http://haolin123.shop.88360.com</p><p><span>手機(jī): </span>021-59220920</p><p><span>地址: </span>白鶴鎮(zhèn)白石公路1360路28號(hào)</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="ay7izfb" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="cvh8syz" class="box"><p><p style="text-indent:25px">化學(xué)鍍鎳又稱(chēng)為無(wú)電解鍍，也可以稱(chēng)為自催化電鍍。具體過(guò)程是指：在一定條件下，水溶液中的金屬離子被還原劑還原，并且沉淀到固態(tài)基體表面上的過(guò)程。化學(xué)鍍鎳就是在不通電的情況下，利用氧化還原反應(yīng)在具有催化表面的鍍件上，獲得金屬合金的方法。它是新近發(fā)展起來(lái)的一門(mén)新技術(shù)?；瘜W(xué)鍍鎳經(jīng)過(guò)多年的不斷探索與研究，金華化學(xué)鍍鎳封閉劑廠家，近幾年已發(fā)展極成熟了，化學(xué)鍍鎳水幾乎適用于所有金屬表面鍍鎳。如：鋼鐵鍍鎳，不銹鋼鍍鎳，鋁鍍鎳，銅鍍鎳等等，金華化學(xué)鍍鎳封閉劑廠家，它同樣適用于非金屬表面鍍鎳。比如：陶瓷鍍鎳，玻璃鍍鎳，金剛石鍍鎳，金華化學(xué)鍍鎳封閉劑廠家，碳片鍍鎳，塑料鍍鎳，樹(shù)脂鍍鎳等等。使用范圍是非常普遍的?；瘜W(xué)鍍鎳是新近發(fā)展起來(lái)的一門(mén)新技術(shù)。金華化學(xué)鍍鎳封閉劑廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華化學(xué)鍍鎳封閉劑廠家,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783296416016/1330118.png"></div><p style="text-indent:25px">化學(xué)鍍鎳是不用外來(lái)電流，借氧化還原作用在金屬制件的表面上沉積一層鎳的方法。用于提高抗蝕性和耐磨性，增加光澤和美觀。適合于管狀或外形復(fù)雜的小零件的光亮鍍鎳，不必再經(jīng)拋光。一般將被鍍制件浸入以硫酸鎳、次磷酸二氫鈉、乙酸鈉和硼酸所配成的混合溶液內(nèi)，在一定酸度和溫度下發(fā)生變化，溶液中的鎳離子被次磷酸二氫鈉還原為原子而沉積于制件表面上，形成細(xì)致光亮的鎳鍍層。鋼鐵制件可直接鍍鎳。錫、銅和銅合金制件要先用鋁片接觸于其表面上1-3分鐘，以加速化學(xué)鍍鎳。鎮(zhèn)江表面化學(xué)鍍鎳工藝化學(xué)鍍鎳以次亞磷酸鹽、硼氫化鈉、硼烷、肼等為還原劑，再添加各種助劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華化學(xué)鍍鎳封閉劑廠家,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783210429687/6028701.png"></div><p style="text-indent:25px">化學(xué)鍍就是在不通電的情況下，利用氧化還原反應(yīng)在具有催化表面的鍍件上，獲得金屬合金的方法。它是新近發(fā)展起來(lái)的一門(mén)新技術(shù)?；瘜W(xué)鍍鎳經(jīng)過(guò)多年的不斷探索與研究，近幾年已發(fā)展極成熟了，化學(xué)鍍鎳水幾乎適用于所有金屬表面鍍鎳。如：鋼鐵鍍鎳，不銹鋼鍍鎳，鋁鍍鎳，銅鍍鎳等，它同樣適用于非金屬表面鍍鎳。比如：陶瓷鍍鎳，玻璃鍍鎳，金剛石鍍鎳，碳片鍍鎳，塑料鍍鎳，樹(shù)脂鍍鎳等。使用范圍是非常普遍的?；瘜W(xué)鍍是在催化劑Fe的催化作用下，溶液中的次磷酸根在催化表面催化脫氫，形成活性氫化物，并被氧化成亞磷酸根;活性氫化物與溶液中的鎳離子進(jìn)行還原反應(yīng)而沉積鎳，其本身氧化成氫氣。</p><p style="text-indent:25px">汽車(chē)工業(yè)利用化學(xué)鍍鎳層非常均勻的優(yōu)點(diǎn)，在形狀復(fù)雜的零件上，如齒輪、散熱器和噴油嘴上采用化學(xué)鍍工藝保護(hù)。鍍上10um左右的化學(xué)鍍鎳層的鋁質(zhì)散熱器具有良好的釬焊性。齒輪上化學(xué)鍍后尺寸誤差十分容易地保持在±0.3～0.5um。而如果采用電鍍工藝，則必須鍍后還要進(jìn)行機(jī)加工才能達(dá)到合格的工差范圍。用在噴油器上的化學(xué)鍍鎳層，能夠提供良好的抗燃油腐蝕和磨損性能。通常，燃油腐蝕和磨損會(huì)導(dǎo)致噴油孔的擴(kuò)大，因此噴油量增大，使汽車(chē)發(fā)動(dòng)機(jī)的馬力超出設(shè)計(jì)標(biāo)準(zhǔn)，加快發(fā)動(dòng)機(jī)的損壞?；瘜W(xué)鍍鎳層可以有效地防止噴油器的腐蝕、磨損，提高發(fā)動(dòng)機(jī)的可靠性和使用壽命?；瘜W(xué)鍍鎳對(duì)在無(wú)催化活性基底上引發(fā)化學(xué)沉積，起到“反應(yīng)起動(dòng)劑”的作用上，具有重要意義。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金華化學(xué)鍍鎳封閉劑廠家,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783185078125/5272882.png"></div><p style="text-indent:25px">化學(xué)鍍鎳在注塑機(jī)、壓鑄模等多種型模是機(jī)械、輕工行業(yè)量大面廣的產(chǎn)品上使用。由于模具幾何形狀復(fù)雜，當(dāng)采用電鍍方法對(duì)模具表面進(jìn)行強(qiáng)化時(shí)，為了使各個(gè)面都能夠鍍上，必須設(shè)計(jì)安裝復(fù)雜的輔**極和掛具；而且，還必須要進(jìn)行鍍后機(jī)械加工，才能保證尺寸精度和表面粗糙度的要求；而且，化學(xué)鍍鎳層具有較低的摩擦系數(shù)和突出的脫模性能，使其成為較為經(jīng)濟(jì)有效的模具表面處理技術(shù)之一。紡織機(jī)械轉(zhuǎn)速很高，各種纖維紗線對(duì)于機(jī)械零件的磨損十分嚴(yán)重。化學(xué)鍍鎳，特別是人造多晶金剛石復(fù)合化學(xué)鍍技術(shù)，比較成功地解決了紡織機(jī)械零件的磨損問(wèn)題。經(jīng)過(guò)半個(gè)多世紀(jì)的研究開(kāi)發(fā)，化學(xué)鍍鎳已進(jìn)入發(fā)展成熟期，其現(xiàn)狀可概括為：技術(shù)成熟、功能多樣、用途普遍。鎮(zhèn)江表面化學(xué)鍍鎳工藝</p><p style="text-indent:25px">化學(xué)鍍鎳是溶液中的鎳離子被次磷酸二氫鈉還原為原子而沉積于制件表面上，形成細(xì)致光亮的鎳鍍層。金華化學(xué)鍍鎳封閉劑廠家</p><p style="text-indent:25px">化學(xué)鍍鎳的廢液處理：鎳離子?；瘜W(xué)鍍鎳廢液中，若不存在絡(luò)合劑或絡(luò)合劑的量較少時(shí)，可直接采用氫氧化鈉調(diào)節(jié)pH值，根據(jù)廢液中鎳離子的濃度，加入適量的NaOH，使鎳離子沉淀為Ni(OH)2除去。對(duì)于有絡(luò)和劑廢液的除鎳，首先利用CaO調(diào)節(jié)廢液的pH值在8左右，除去大部分的有機(jī)酸絡(luò)合劑，然后在廢液中加入CaO或NaOH，調(diào)至廢液的pH值為11～12，使廢液中的大部分鎳離子和其他重金屬離子發(fā)生沉淀反應(yīng)，再加入適量的高分子絮凝劑，加速不溶物的沉降，在沉降過(guò)程中，加入適宜和適量的氧化劑，以除去廢液中的次、亞磷酸鹽，有利于鎳離子的沉淀并降低廢水的化學(xué)耗氧量（COD）。金華化學(xué)鍍鎳封閉劑廠家</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3133693.html</p></div></div></div></div></div><div id="wu8fbsj" class="page-right twoColRt"><div id="zh7hiul" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="v2sjfbc" 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" 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