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#f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>吉林電鍍設備值得信賴,電鍍設備</p><p><span>***更新：</span>2021-01-01 10:09:31</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="znp7xb7" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">余姚市琰昊機械廠</a></p><p><span>聯(lián)系人：</span>蘇紅濤</p><p><span>郵箱: </span>1073985827@qq.com</p><p><span>電話: </span>15824566671</p><p><span>傳真: </span>0574_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0574-62067066</p><p><span>地址: </span>臨山鎮(zhèn)湖堤村湖堤</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="vdrlfp7" class="page-proshow02"><p class="title">詳細說明</p><div id="vn9xh77" class="box"><p><p> 不是所有的金屬離子都能從水溶液中沉積出來，如果陰極上氫離子還原為氫的副反應占主要地位，則金屬離子難以在陰極上析出.根據(jù)實驗，金屬離子自水溶液中電沉積的可能性，可從元素周期表中得到一定的規(guī)律，如表1，吉林電鍍設備值得信賴.1所示。 </p> <p> <br /> </p> <p> 陽極分為可溶性陽極和不溶性陽極，大多數(shù)陽極為與鍍層相對應的可溶性陽極，如：鍍鋅為鋅陽極，鍍銀為銀陽極，鍍錫-鉛合金使用錫-鉛合金陽極.但是少數(shù)電鍍由于陽極溶解困難，使用不溶性陽極，如酸性鍍金使用的是多為鉑或鈦陽極，吉林電鍍設備值得信賴.鍍液主鹽離子靠添加配制好的標準含金溶液來補充.鍍鉻陽極使用純鉛，吉林電鍍設備值得信賴，鉛-錫合金，鉛-銻合金等不溶性陽極。電鍍就是利用電解原理在某些金屬表面上鍍上一薄層其它金屬或合金的過程。吉林電鍍設備值得信賴</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林電鍍設備值得信賴,電鍍設備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229900790507812/9123977.jpg"></div><p> 第四節(jié) 金屬的電積過程 </p> <p> 電鍍過程是鍍液中的金屬離子在外電場的作用下﹐經(jīng)電極反應還原成金屬原子并在陰極上進行金屬沉積的過程。下圖(1-2)是電沉積過程示意圖﹐完成電沉積過程必須經(jīng)過以下三個步驟﹕ </p> <p> 液相傳質(zhì)﹕鍍液中的水化金屬離子或絡離子從溶液內(nèi)部向極界面遷移﹐到達陰極的雙電層溶液一側(cè)。 </p> <p> 電化學反應﹕水化金屬離子或絡離子通過雙電層﹐并去掉它周圍的水化分子或配位體層﹐從陰極上得電子生成金屬原子。有三種方式﹕電遷移﹐對流和擴散。 </p> <p> 電結晶﹕金屬原子沿金屬表面擴散到結晶生長點﹐以金屬原子態(tài)排列在晶格內(nèi)﹐形成鍍層。 </p> <p> 電鍍時﹐以上三個步驟是同時進行的﹐但進行的速度不同﹐速度**慢的一個被稱為整個沉積過程的控制性環(huán)節(jié)。不同步驟作為控制性環(huán)節(jié)﹐的電沉積結果是不一樣的。吉林電鍍設備值得信賴鍍層金屬或其他不溶性材料做陽極，電鍍待鍍的工件做陰極，鍍層金屬的陽離子在待鍍工件表面被還原形成鍍層。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林電鍍設備值得信賴,電鍍設備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229901001689453/8125337.jpg"></div><p> (1)電化學極化 </p> <p> <br /> </p> <p> 由于陰極上電化學反應速度小于外電源供給電子的速度﹐從而使電極電位向負的方向移動而引起的極化作用 </p> <p> <br /> </p> <p> (2)濃差極化 </p> <p> <br /> </p> <p> 由于鄰近電極表液層的濃度與溶液主體的濃度發(fā)生差異而產(chǎn)生的極化稱濃差極化﹐這是由于溶液中離子擴散速度小于電子運動造成的。 </p> <p> <br /> </p> <p> 第四節(jié) 金屬的電積過程 </p> <p> <br /> </p> <p> 電鍍過程是鍍液中的金屬離子在外電場的作用下﹐經(jīng)電極反應還原成金屬原子并在陰極上進行金屬沉積的過程。下圖(1-2)是電沉積過程示意圖﹐完成電沉積過程必須經(jīng)過以下三個步驟﹕ </p> <p> <br /> </p> <p> 液相傳質(zhì)﹕鍍液中的水化金屬離子或絡離子從溶液內(nèi)部向極界面遷移﹐到達陰極的雙電層溶液一側(cè)。 </p><p> 鼓泡：電鍍以后，當周圍介質(zhì)的溫度升高時，聚集在基體金屬內(nèi)的吸附氫會膨脹而使鍍層產(chǎn)生小鼓泡，嚴重地影響著鍍層的質(zhì)量。這種現(xiàn)象在電鍍鋅、鎘、鉛等金屬時尤為明顯。 </p> <p> <br /> </p> <p> 覆蓋能力：覆蓋能力（或深鍍能力）也是鍍液的一個重要性能指標，是指在一定的電解條件下使沉積金屬在陰極零件表面全部覆蓋的能力，即在特定條件下于凹槽或深孔中沉積金屬鍍層的能力，它是指鍍層在零件上分布的完整程度。 </p> <p> <br /> </p> <p> 氫脆：氫離子在陰極還原后，一部分形成氫氣逸出，一部分以原子氫的狀態(tài)滲入基體金屬（尤其是**度金屬材料）及鍍層中，使基體金屬及鍍層的韌性下降而變脆，這種現(xiàn)象叫做“氫脆”。通以直流電的電源后，陽極的金屬會氧化（失去電子），溶液中的正離子則在陰極還原成原子并積聚在陰極表層。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="吉林電鍍設備值得信賴,電鍍設備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229901039218750/6810569.jpg"></div><p> 惰性導致了陽極電陽性。當電壓施加在兩個，電流流過的解決方案和金屬沉積。適當控制各種參數(shù)，在明亮的電鍍，硬，貼壁沉積的結果。 </p> <p> <br /> </p> <p> 再加上其他表面，如鋁，陽極氧化，如銅，鎳，銀，金，可能還包括其他主要金屬電鍍完成后，才能真正打扮起來，保護我們的創(chuàng)作。 </p> <p> <br /> </p> <p> 另外還要注意，如今鍍色廠的新技術已經(jīng)發(fā)展為鉻無論是在金屬和非金屬表面鍍不會造成任何環(huán)境的危害。由于采用鍍鉻的材料，以便創(chuàng)造一些環(huán)境危害已作出一些規(guī)定，使鍍鉻環(huán)保。因此鍍鉻對環(huán)境的零危害在近期也是成為難以實現(xiàn)，自然是成本也同步增加。所謂極化就是指有電流通過電極時，電極電位偏離平衡電極電位的現(xiàn)象。吉林電鍍設備值得信賴</p><p style="text-indent:25px">分別試驗這些保護材料的耐酸、堿腐蝕、耐高溫（堿蝕溶液比較高溫度80℃左右）性能以及可剝離性。吉林電鍍設備值得信賴</p><p> 一、電鍍工藝設備 </p> <p> 電鍍車間所進行的生產(chǎn)工藝可分為三個環(huán)節(jié)，即鍍前表面處理、電鍍處理和鍍后處理。電鍍工藝設備一般是指上述直接對零件進行加工處理的生產(chǎn)設備。 </p> <p> 鍍前表面處理的主要工序有磨光、拋光、刷光、滾光、噴砂、去油、去銹、腐蝕、中和以及清洗等。針對零件材料、形狀、表面狀況和加工要求，選擇其中適當?shù)膸讉€步驟，對零件表面進行必要的修整加工，使零件具有平整光潔的表面，這是能否獲得質(zhì)量鍍層的重要環(huán)節(jié)。鍍前處理工藝中，所用的主要設備有磨、拋光機，刷光機，噴砂機，滾光機和各類固定槽。吉林電鍍設備值得信賴</p><p style="text-indent:25px">余姚市琰昊機械廠致力于五金、工具，以科技創(chuàng)新實現(xiàn)***管理的追求。琰昊機械廠深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的龍門電鍍線，環(huán)形電鍍線，鋁氧化生產(chǎn)線，廢氣處理設備。琰昊機械廠致力于把技術上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。琰昊機械廠始終關注五金、工具市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2659154.html</p></div></div></div></div></div><div id="9z777fj" class="page-right twoColRt"><div id="jdxb97d" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="rlvltjr" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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