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發(fā)信息做推廣就找產(chǎn)品網(wǎng)<br />企業(yè)電商信息綜合服務(wù)平臺(tái) </span><div id="xxkktzo" class="searchbox"><div id="egarirv" class="searchLt"><div id="zbctjal" class="tabs"><a href="JavaScript:;" data-type="product" class="active">產(chǎn)品</a><a href="JavaScript:;" data-type="member" class="">公司</a><a href="JavaScript:;" data-type="article" class="">資訊</a><a href="JavaScript:;" data-type="exhibition" class="">展會(huì)</a></div><div id="2bel3vk" class="clearfix searchWrap"><div id="ktp32lh" class="searchInput"><input type="text" name="keywords" placeholder="請(qǐng)輸入搜索關(guān)鍵詞" id="kd"><a href="javascript:void(0)" class="searchBtn" id="search">搜索</a></div></div></div></div></header><nav class="navbox"><div id="vy7gpl2" class="container"><ul><li id = "index_index"><a href="http://www.cdcfah.com/"><span>首頁</span></a></li><li id = "index_company"><a ><span>企業(yè)名錄</span></a></li><li id = "index_product"><a href="http://www.cdcfah.com/cp/"><span>產(chǎn)品供應(yīng)</span></a></li><li id = 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class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784895654297/374387.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="zs73ytl" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784895654297/374387.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tm3t7no" 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>南通化工電鍍?cè)?鋁浸鋅液</p><p><span>***更新：</span>2020-12-07 05:19:40</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="ksj2wn8" 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="8wm332y" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="pyuqmsj" class="box"><p><p style="text-indent:25px">由于鋅和鋁的電極電勢(shì)比較接近以及氫在鋅上的過電勢(shì)較高(0．75V)，加之，添加了絡(luò)合劑，因此，置換反應(yīng)緩慢而均勻進(jìn)行，在鋁上沉積一層結(jié)合力好、細(xì)小、致密、均勻的鋅層。當(dāng)鋁合金中含si，南通化工電鍍?cè)?、Mg、cu較高時(shí)，為了改善浸鋅層質(zhì)量，在浸鋅溶液中加入少量的鐵鹽、鎳鹽(用酒石酸鉀鈉絡(luò)合后加入)，使鐵離子、鎳離子與鋅離子共沉積，南通化工電鍍?cè)?，以改善鋅與基體的結(jié)合力，并提高耐蝕性。為了使電鍍零件在使用上有較好的效果，在保證電沉積層良好的條件下，浸鋅層的厚度應(yīng)盡可能薄，南通化工電鍍?cè)?。?duì)合金成份復(fù)雜難鍍鋁合金基材采用二次沉鋅，可以明顯提高后續(xù)鍍層的結(jié)合力和產(chǎn)品合格率。鋁浸鋅液由于價(jià)格較低、無毒性、不易燃等原因，使用較普遍。南通化工電鍍?cè)?/p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通化工電鍍?cè)?鋁浸鋅液" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784895654297/374387.png"></div><p style="text-indent:25px">附著量耐蝕性主要決定于鋁浸鋅液鍍鋅層的厚度，故量測(cè)厚度常為主要判定鍍鋅質(zhì)量好壞的根據(jù)，鍍鋅層受鋼材表面的成分、組織、結(jié)構(gòu)不同而有不同的反應(yīng)，另進(jìn)出鋅溶液的角度、速度亦有很大的影響。故預(yù)得完全均一的鍍層厚度，實(shí)際上不太可能。所以量測(cè)附著量相對(duì)不能以單一點(diǎn)（部位）來判定，必須要量測(cè)其單位面積（㎡）平均附著鋅重（g）才有意義。測(cè)附著量的方法有很多種，如破壞性的切片金相觀測(cè)法、酸洗法，非破壞性的膜厚計(jì)法、電化學(xué)法、進(jìn)出貨重量差估計(jì)法等。一般常用的為膜厚計(jì)法及酸洗法。膜厚計(jì)為一利用磁場(chǎng)感應(yīng)來量測(cè)鋅層厚度普遍省事的方法，其基本條件為鋼鐵表面必須平滑、完整，才可得較準(zhǔn)確數(shù)字。上海高磷化學(xué)鎳配方鋁浸鋅液能填平基材墻面的孔隙。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通化工電鍍?cè)?鋁浸鋅液" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784968046875/2708501.png"></div><p style="text-indent:25px">采用二次浸鋅方式對(duì)鋁進(jìn)行鍍前處理時(shí)，第1次浸鋅后在鋁表面置換出來的鋅結(jié)晶的晶粒尺寸為lμm左右，而且，其中還含有質(zhì)量分?jǐn)?shù)為1％左右的鐵元素。剝離這些鋅晶體后，發(fā)現(xiàn)在其下面存在著很多的島狀、金字塔狀、或者是形狀更復(fù)雜的微小突起，發(fā)現(xiàn)這些突起物不是鋅或鐵的溶解殘余物，而是在第1次浸鋅過程中置換析出鋅晶粒的同時(shí)，鋁溶解所造成的凹陷的邊緣；并發(fā)現(xiàn)在第二次浸鋅時(shí)，鋅不是在基體的平滑處析出，而是優(yōu)先在剝離第1次浸鋅晶粒后的島狀突起部分析出。和第1次浸鋅情況相同，第二次浸鋅過程中置換的晶粒中也含有質(zhì)量分?jǐn)?shù)約為l％的鐵元素，還發(fā)現(xiàn)隨著浸鋅液中堿濃度的增加，置換鋅層的量下降，其晶粒的尺寸也變小。</p><p style="text-indent:25px">沉鋅液注意事項(xiàng)：Alumseal W Replenisher B為強(qiáng)堿濃溶液，添加時(shí)需在攪拌下少量多次加入，以避免工作溶液局部過熱。工作液含有**物，要小心操作，避免與酸混合，產(chǎn)生危險(xiǎn)。生產(chǎn)時(shí)不要大量補(bǔ)充添加劑，要少量多次加入，以使工作溶液混合均勻及避免使工件表面粗糙。鋁合金無氰沉鋅液：不含**物?？稍阡X表面產(chǎn)生一致密而均勻的四元金屬沉鋅薄層，為后序工序直接鍍銅、鍍鎳、鍍錫、化學(xué)沉鎳提供良好的結(jié)合力。工藝特點(diǎn)：操作方便，適用于掛鍍和滾鍍。不含**物?？稍阡X表面產(chǎn)生一致密而均勻的四元金屬沉鋅薄層，為后序工序直接鍍銅、鍍鎳、鍍錫、化學(xué)沉鎳提供良好的結(jié)合力。鋁浸鋅液提高抹灰層與基層的吸附力。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="南通化工電鍍?cè)?鋁浸鋅液" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784804794922/6440667.png"></div><p style="text-indent:25px">鋁合金電鍍中，沉鋅可在鋁合金表面產(chǎn)生一致密而均勻的多元沉鋅薄層，從而為后續(xù)工序之直接鍍銅、鍍鎳、鍍錫、化學(xué)沉鎳等提供良好之結(jié)合力?，F(xiàn)在清潔生產(chǎn)的要求，無氰沉鋅用的愈來愈普遍，國(guó)內(nèi)各大電鍍?cè)瞎?yīng)商都有供應(yīng)。但微氰沉鋅，以其穩(wěn)定可靠，操作范圍廣，仍有一定的市場(chǎng)?，F(xiàn)就沉鋅操作中應(yīng)注意的幾點(diǎn)總結(jié)如下：嚴(yán)格控制好沉鋅液的濃度，一般工廠按波美度控制在20-22Be°。某些材質(zhì)，高波美度反而能明顯提高鋁電鍍件的質(zhì)量，這需要生產(chǎn)中自行小試或遵從供應(yīng)商建議。沉鋅液要特別注意堿與鋅的綜合比，一般NaOH與Zn較好比值為10-12:1。鋁浸鋅液獨(dú)具裝飾性能。南通化工電鍍?cè)?/p><p style="text-indent:25px">鋁浸鋅液又稱油溶性緩蝕劑。南通化工電鍍?cè)?/p><p style="text-indent:25px">鋁浸鋅液長(zhǎng)時(shí)間儲(chǔ)存會(huì)有分層、霉斑現(xiàn)象，用前攪拌均勻即可，不影響使用效果。鋁浸鋅液使用時(shí)應(yīng)涂刷均勻，不應(yīng)有漏。鋁浸鋅液使用時(shí)的操作環(huán)境溫度應(yīng)在5℃以上。鋁浸鋅液通過對(duì)物體表面進(jìn)行處理，該處理可能是物理作用的吸附或包覆，也經(jīng)常是物理化學(xué)的作用。目的是改善或完全改變材料表面的物理技術(shù)性能和表面化學(xué)特性。具有以下特點(diǎn)：1、雙向滲透粘結(jié)，產(chǎn)生放射性鏈?zhǔn)藉^固效應(yīng)將雙向材料長(zhǎng)久牢固的粘結(jié)在一起。2、具有高度的柔軟堅(jiān)韌性和良好的透氣性、抗凍融、耐水、耐老化，沒有毒無味、無污染，為綠色環(huán)保產(chǎn)品。南通化工電鍍?cè)?/p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2300091.html</p></div></div></div></div></div><div id="ibxsoef" class="page-right twoColRt"><div id="ygstzam" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="sq7784f" 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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