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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="yqh8pwx" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229901001689453/8125337.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="igcgrd8" 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>浙江省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>山西自動電鍍設(shè)備,電鍍設(shè)備</p><p><span>***更新：</span>2020-11-08 01:10:12</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="o73irsm" 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="3u9lmnj" class="page-proshow02"><p class="title">詳細說明</p><div id="mugm837" class="box"><p><p> 章電鍍的定義 </p> <p> 電鍍是指在含有欲鍍金屬的鹽類溶液中﹐以被鍍基體金屬為陰極﹐通過電解作用﹐使鍍液中欲鍍金屬的陽離子在基體金屬表面沉積出來﹐形成鍍層的一種表面加工方法。鍍層性能不同于基體金屬﹐具有新的特征，山西自動電鍍設(shè)備。根據(jù)鍍層的功能分為防護性鍍層﹐裝飾性鍍層及其它功能性鍍層。 </p> <p> 第二章電鍍的基本知識 </p> <p> 節(jié) 電鍍液 </p> <p> 1.主鹽 </p> <p> 主鹽是指鍍液中能在陰極上沉積出所要求鍍層金屬的鹽﹐用于提供金屬離子。鍍液中主鹽濃度必須在一個適當?shù)姆秶o主鹽濃度增加或減少﹐在其它條件不變時﹐都會對電沉積過程及的鍍層有影響。比如﹐主鹽濃度升高﹐電流效率提高﹐金屬沉積速度加快﹐鍍層晶粒較粗﹐溶液分散能力下降，山西自動電鍍設(shè)備，山西自動電鍍設(shè)備。在盛有電鍍液的鍍槽中，經(jīng)過清理和特殊預處理的待鍍件作為陰極，用鍍覆金屬制成陽極。山西自動電鍍設(shè)備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西自動電鍍設(shè)備,電鍍設(shè)備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229901001689453/8125337.jpg"></div><p> 4.電鍍液的分散能力 </p> <p> <br /> </p> <p> 鍍?nèi)芤旱姆稚⒛芰κ侵鸽婂円核哂械氖菇饘賹雍穸染鶆蚍植嫉哪芰Ιo也稱均鍍能力。電鍍液的分散能力越好﹐在不同陰極部位所沉積出的金屬層厚度錁勻。 </p> <p> <br /> </p> <p> 5.電鍍液的覆蓋能力 </p> <p> <br /> </p> <p> 在電鍍生產(chǎn)中﹐常用到的另一個概念是覆蓋能力﹐亦稱深鍍能力﹐它是指電鍍液所具有的使鍍件的深凹處沉積上金屬鍍層的能力。分散能力和覆蓋能力不同﹐前者是說明金屬在陰極表面分布均勻程度的問題﹐它的前提是在陰極錈娑加卸撇悌r而后者是指金屬在陰極表面的深凹處有無沉積層的問題. 山西自動電鍍設(shè)備電鍍液由含有鍍覆金屬的化合物、導電的鹽類、緩沖劑、pH調(diào)節(jié)劑和添加劑等的水溶液組成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西自動電鍍設(shè)備,電鍍設(shè)備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229901349062500/5268821.jpg"></div><p> 電鍍輔助設(shè)備的管理對電鍍生產(chǎn)管理同樣是非常重要的。所謂輔助設(shè)備，并不是不重要的設(shè)備，隨著電鍍設(shè)備觀念的變化，以往不重視，甚至省掉某些輔助設(shè)備的做法已經(jīng)很少見了，現(xiàn)在很多電鍍企業(yè)不僅對主要設(shè)備講究，輔助設(shè)備也很齊全。使很多電鍍企業(yè)成為我國國際化生產(chǎn)基地產(chǎn)業(yè)鏈中的一環(huán)。 </p> <p> <br /> </p> <p> <br /> </p> <p> <br /> </p> <p> 但是，電鍍生產(chǎn)管理的實踐證明，電鍍輔助設(shè)備的故障率比電鍍主要設(shè)備的故障率要高得多。很多電鍍廠的整流器和電鍍槽可以用十年八年，而加熱器幾乎一年中要換幾次，過濾機也是幾年一換，時常要修理。沒有多少人注意和分析這是為什么。 </p><p> 整流電源 </p> <p> 與其他工業(yè)技術(shù)相比，電鍍技術(shù)的設(shè)備不僅很簡單，而且有很大的變通性，以電源為例，只要是能夠提供直流電的裝置，就可以拿來做電鍍電源，從電池到直流發(fā)電機，從橋堆到硅整流器、從可控硅到開關(guān)電源等，都是電鍍可用的電源。其功率大小既可以由被鍍產(chǎn)品的表面積來定，也可以用現(xiàn)有的電源來定每槽可鍍的產(chǎn)品多少。 </p> <p> 當然，正式的電鍍加工都會采用比較可靠的硅整流裝置，并且主要的指標是電流值的大小和可調(diào)范圍，電壓則由0～18V隨電流變化而變動。根據(jù)功率大小而可選用單相或三相輸入，要能防潮和散熱。工業(yè)用電鍍電源一般從l00A到幾千安不等，通常也是根據(jù)生產(chǎn)能力需要而預先設(shè)計確定的，比較好是單槽單用，不要一部電源向多個鍍槽供電。如果只在實驗室做試驗，則采用5～1OA的小型實驗整流電源就行了。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="山西自動電鍍設(shè)備,電鍍設(shè)備" src="http://tyunfile.71360.com/UploadFile/nbyhjx/637229900917861328/1643900.jpg"></div><p> 第二節(jié) 電鍍反應(yīng) </p> <p> <br /> </p> <p> 1.電化學反應(yīng) </p> <p> <br /> </p> <p> 下圖是電鍍裝置示意圖﹐被鍍的零件為陰極﹐與直流電源的負極相連﹐金屬陽極與直流電源的正極聯(lián)結(jié)﹐陽極與陰均浸入鍍液中。當在陰陽兩極間施加一定電位時﹐則在陰極發(fā)生如下反應(yīng)﹕從鍍液內(nèi)部擴散到電極和鍍液界面的金屬離子Mn+從陰極上獲得n個電子﹐還原成金屬M。 </p> <p> <br /> </p> <p> 另一方面﹐在陽極則發(fā)生與陰極完全相反的反應(yīng)﹐即陽極界面上發(fā)生金屬M的溶解﹐釋放n個電子生成金屬離子M n+。 </p> <p> 2.法拉第定律 </p> <p> <br /> </p> <p> 電流通過鍍液時﹐電解質(zhì)溶液發(fā)生電解反應(yīng)﹐陰極上不斷有金屬析出﹐陽極金屬不斷溶解。因此﹐金屬的析出(或溶解)量必定與通過的電荷有關(guān)。根據(jù)大量實驗結(jié)果﹐法拉第建立了析出(或溶解)的物質(zhì)與電荷之間的關(guān)系的定律。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。山西自動電鍍設(shè)備</p><p style="text-indent:25px">電鍍層比熱浸層均勻，一般都較薄，從幾個微米到幾十微米不等。山西自動電鍍設(shè)備</p><p> 3.電流密度的影響 </p> <p> <br /> </p> <p> 任何電鍍都必須有一個能產(chǎn)生正常鍍層的電流密度范圍。當電流密度過低時﹐陰極極化作用較小﹐鍍層桔晶粗大﹐甚至沒有鍍層。隨著電流密度的增加﹐陰極極化作用隨著增加﹐鍍層晶粒越來越細。當電流密度過高﹐超過極限電流密度時﹐鍍層質(zhì)量開始惡化﹐甚至出現(xiàn)海綿體﹐枝晶狀﹐燒焦及發(fā)黑等。電流密度的變化的上限和下限是由電鍍液的本性﹐濃度﹐溫度和攪拌等因素決定的。一般情況下種餮聞ǘ仍齟螬o鍍層溫度升高﹐以及有攪拌的條件下﹐可以允許采用較大的電流密度。山西自動電鍍設(shè)備</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(shè)備。琰昊機械廠致力于把技術(shù)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(guān)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/1892072.html</p></div></div></div></div></div><div id="o7na9up" 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