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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>江蘇省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>陜西達(dá)克羅技術(shù),達(dá)克羅</p><p><span>***更新：</span>2020-11-14 02:17:25</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="4iu3w3l" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">常州捷邁特表面工程技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>張建平</p><p><span>郵箱: </span>2228205437@qq.com</p><p><span>電話: </span>13806111697</p><p><span>傳真: </span>0519_89886107</p><p><span>網(wǎng)址: </span>http://www.jmtdacromet.com</p><p><span>手機(jī): </span>0519-89886107</p><p><span>地址: </span>昆侖路35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="zsoglj8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="gdkgw8p" class="box"><p><p style="text-indent:25px">達(dá)克羅的鉻固化時(shí)，涂膜中的水份、有機(jī)類（纖維素）物質(zhì)等揮發(fā)份在揮發(fā)的同時(shí)，依靠鋅鉻膜（達(dá)克羅）母液中的高價(jià)鉻鹽的氧化性，使電極電位負(fù)值較大的單質(zhì)鋅片、鋁片漿與鐵基體反應(yīng)，形成Fe、Zn、Al的鉻鹽化合物無機(jī)涂層。由于膜層是與基體直接后應(yīng)獲得的，所以該防腐層極為致密，陜西達(dá)克羅技術(shù)，（用鍍鋅或浸鋅方法獲得的防腐層無法與之相比）該涂層在腐蝕環(huán)境下，陜西達(dá)克羅技術(shù)，會(huì)形成無數(shù)個(gè)原電池，即先腐蝕掉電位較負(fù)的Al、Zn鹽類，陜西達(dá)克羅技術(shù)，直到它們被消耗后才有可能腐蝕至基體本身。鋅鉻膜（達(dá)克羅）涂層是由重疊在一起的**鋅片、鉻酸聚合物單元組成。鋅鉻膜（達(dá)克羅）涂層中的鉻酸聚合物層不含結(jié)晶水，因此在高溫狀態(tài)下的抗腐蝕能力也表現(xiàn)出很好的品質(zhì)。達(dá)克羅應(yīng)用在載重汽車上各種**度底盤中小支架、連接件、外露件及緊固件的防腐。陜西達(dá)克羅技術(shù)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西達(dá)克羅技術(shù),達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457642988281/7149056.png"></div><p style="text-indent:25px">達(dá)克羅涂液種類繁多，但涂液的基本組成可歸納如下:1.金屬物:由鋅、鋁等物質(zhì)組成，主要為超細(xì)鱗片狀鋅、超細(xì)鱗片狀鋁。2.溶劑:為惰性有機(jī)溶劑，如乙二醇等。3.無機(jī)酸組分:如鉻酸等。4.特殊有機(jī)物:為涂液的增粘分散組份，主要成份為纖維素類白色粉末。達(dá)克羅膜層對(duì)于鋼鐵基體的保護(hù)作用可歸納為以下幾點(diǎn):1.壁壘效應(yīng):由于片狀鋅、鋁層狀重疊，阻礙了水、氧等腐達(dá)克羅產(chǎn)品蝕介質(zhì)到達(dá)基體的進(jìn)程，能起一種隔離的屏蔽作用。2.鈍化作用:在達(dá)克羅的處理過程中，鉻酸與鋅、鋁粉和基體金屬發(fā)生化學(xué)反應(yīng)，生成致密的鈍化膜，這種鈍化膜具有很好的耐腐蝕性能。3.陰極保護(hù)作用:鋅鋁鉻涂層比較主要的保護(hù)作用與鍍鋅層一樣，是對(duì)基體進(jìn)行陰極保護(hù)。陜西達(dá)克羅技術(shù)達(dá)克羅涂層本身的強(qiáng)度并不高，硬度只有1H，為保持涂層的完整性，一則可以在改變涂層的配方，增加塑性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西達(dá)克羅技術(shù),達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457712724609/3077365.png"></div><p style="text-indent:25px">載重汽車上各種彈性零件的防腐，如環(huán)箍、半圓卡箍、各種彈簧、板簧等。這些零件的強(qiáng)度和硬度要求較高，電鍍處理會(huì)產(chǎn)生氫脆，如去氫不徹底，長時(shí)間承受動(dòng)載荷容易發(fā)生撕裂或腐蝕疲勞，會(huì)給汽車行駛帶來安全隱患，尤其是對(duì)于載重汽車，其作業(yè)環(huán)境比較惡劣；所以對(duì)這些件的表面處理要求也相應(yīng)較高，而達(dá)克羅涂層具有高的耐腐蝕性，高的耐候性，非常適合這類汽車零部件的表面處理。達(dá)克羅烘烤溫度300度，而環(huán)保達(dá)克羅烘烤溫度大都是200度左右。</p><p style="text-indent:25px">達(dá)克羅用在載重汽車上各種形狀復(fù)雜的管類、腔類零部件的防腐，如發(fā)動(dòng)機(jī)的排氣管、消聲器等。如果這類零件采用電鍍處理，由于此類零件形狀復(fù)雜和電鍍工藝的局限性，形成的鍍層不均勻，甚至可能會(huì)發(fā)生漏鍍，會(huì)使制件抗腐蝕能力急劇下降，直接影響汽車零件的性能和使用壽命。而達(dá)克羅工藝采用浸漬等方式，不存在電鍍過程中均涂能力和深度能力不好的問題，而且達(dá)克羅處理液具有優(yōu)良的的滲透能力，在緊密接觸的縫隙中也能形成良好的防護(hù)膜，特別適用于管類及型腔復(fù)雜的汽車零件的防腐，有些組裝件在裝配好以后也適宜進(jìn)行達(dá)克羅處理。此外，達(dá)克羅涂層也不受各種油類、防凍液、清洗劑等化學(xué)制品的侵蝕，耐化學(xué)性、耐候性也都很好，所以達(dá)克羅十分適合載重汽車底盤及汽車外用零部件的防腐。達(dá)克羅防銹效果卻是傳統(tǒng)電鍍鋅、熱鍍鋅或涂料涂覆法的7-10倍以上。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="陜西達(dá)克羅技術(shù),達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457878310547/5782900.png"></div><p style="text-indent:25px">達(dá)克羅的耐磨性能較差，所以應(yīng)頂涂達(dá)克羅，然后再涂以耐磨性的其他涂料。技術(shù)應(yīng)用：載重汽車上各種**度底盤中小支架、連接件、外露件及緊固件的防腐，如各種異型鋼支架、螺栓（含騎馬螺栓、車輪螺栓等）、螺母等。國外已明確建議汽車上≥10.9級(jí)的緊固件要使用達(dá)克羅涂層防腐，因?yàn)檫_(dá)克羅涂覆不僅有高的耐腐蝕性，而且能夠保證無氫脆。**度鋼在酸洗和電鍍等過程中有產(chǎn)生氫脆的危險(xiǎn)性，雖然可以通過熱處理去氫，但是很難徹底去除。達(dá)克羅涂覆過程不需要酸洗和活化，也沒有導(dǎo)致析氫的電化學(xué)反應(yīng)發(fā)生，避免了氫脆現(xiàn)象的出現(xiàn)。達(dá)克羅則可以進(jìn)入工件的這些部位形成達(dá)克羅涂層。湖北達(dá)克羅成本</p><p style="text-indent:25px">達(dá)克羅涂層具有優(yōu)良的防腐性能、耐候性和耐化學(xué)品性。陜西達(dá)克羅技術(shù)</p><p style="text-indent:25px">無鉻鋅鋁涂層（鋅鋁涂層）是將無鉻鋅鋁涂料浸涂、刷涂或噴涂于鋼鐵零件或構(gòu)件表面，經(jīng)過烘烤而形成的以鱗片狀鋅為主要成分的無機(jī)防腐蝕涂層，其外觀呈銀灰色，是一種將超細(xì)鋅鱗片和鋁鱗片疊合包裹在特殊粘結(jié)劑中制成的無機(jī)涂層。無鉻鋅鋁涂層完全保留了達(dá)克羅技術(shù)高抗蝕性、涂層薄、無氫脆的優(yōu)點(diǎn)，有效地解決了有害的Cr6+的問題，從真正意義上實(shí)現(xiàn)了清潔生產(chǎn)。無鉻鋅鋁涂層（交美特）由于不使用有毒的金屬（如鎳、鉛、鋇等）以及六價(jià)鉻或三價(jià)鉻，符合環(huán)保標(biāo)準(zhǔn)要求。因此其逐漸在風(fēng)力電機(jī)組螺栓、螺母墊片等一些緊固件防腐蝕方面上得到推廣應(yīng)用。陜西達(dá)克羅技術(shù)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1979375.html</p></div></div></div></div></div><div id="meejzih" class="page-right twoColRt"><div id="laxi883" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="x3iyukw" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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