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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>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>金屬表面達(dá)克羅處理多少錢,達(dá)克羅</p><p><span>***更新：</span>2020-10-16 16:10:11</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="imold7j" 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: </span>0519-89886107</p><p><span>地址: </span>昆侖路35號</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="oyaxjvs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="bqxu8kd" class="box"><p><p style="text-indent:25px">達(dá)克羅發(fā)黑是化學(xué)表面處理的一種常用手段，原理是使金屬表面產(chǎn)生一層厚度0.6~0.8微米的氧化膜（四氧化三鐵），以隔絕空氣，達(dá)到防銹目的。外觀要求不高時可以采用發(fā)黑處理，鋼制件的表面發(fā)黑處理，也有被稱之為發(fā)藍(lán)的。發(fā)黑處理常用的方法有傳統(tǒng)的堿性加溫發(fā)黑和出現(xiàn)較晚的常溫發(fā)黑兩種。但是發(fā)黑防銹能力較差,無油后它很快就會生銹。就是在有油狀態(tài)下，金屬表面達(dá)克羅處理多少錢,其中性鹽霧試驗也只能達(dá)到3~5小時。發(fā)黑的緊固件扭矩與預(yù)緊力一致性也很差，金屬表面達(dá)克羅處理多少錢。如需提高，金屬表面達(dá)克羅處理多少錢,可以在裝配時在內(nèi)處螺紋上涂抹油脂后再旋合。達(dá)克羅環(huán)保優(yōu)越性越來越明顯。金屬表面達(dá)克羅處理多少錢</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金屬表面達(dá)克羅處理多少錢,達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457602304687/3572505.png"></div><p style="text-indent:25px">一般說來，電極電位不同的兩種金屬或合金相接觸時，就會產(chǎn)生電化學(xué)腐蝕。達(dá)克羅加工涂層的防腐蝕是建立在鉻酸的鈍化作用和鋅的受控**保護(hù)作用之上的，所以控制了鋅的消耗，提高了防腐蝕性能。達(dá)克羅不存在氫脆問題,并且扭矩—預(yù)緊力一致性能很好。如不考慮六價鉻的環(huán)保問題,它實際上較適用于高防腐要求的**度緊固件。六角頭螺栓與六角螺母配合，鍍鋅、發(fā)黑、達(dá)克羅表面處理防松性能依次下降，六角頭螺栓與鎖緊螺母配合，發(fā)黑、達(dá)克羅表面處理防松性能依次下降。達(dá)克羅生產(chǎn)廠家達(dá)克羅表面處理過的鎖緊墊圈出現(xiàn)銹防腐作用，造成氧化腐蝕。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金屬表面達(dá)克羅處理多少錢,達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457569833984/788425.png"></div><p style="text-indent:25px">達(dá)克羅是一種新型的耐腐涂層，有著高滲透性、高附著性、高減磨性、高耐氣候性等特點。達(dá)克羅技術(shù)的基體材料范圍包括鋼鐵制品及有色金屬如鋁、鎂及其合金，銅、鎳、鋅等及其合金。而且涂覆全過程無污染，是金屬表面處理富有標(biāo)志性的高新技術(shù)。達(dá)克羅技術(shù)的防腐機理：鋅對基體的受控的電化學(xué)保護(hù)作用；.鉻酸的鈍化作用，通常的鈍化**是在待處理的金屬表面形成一層極薄的鈍化膜，如電鍍、熱鍍，而達(dá)克羅溶液中無數(shù)微小的鋅片與鉻酸鈍化反應(yīng)，經(jīng)涂覆烘烤后，鋅片層層疊加，形成了無數(shù)層鈍化膜；鋅片鋁片及復(fù)后鉻鹽涂層的機械屏蔽遮蓋保護(hù)作用及鋁控制鋅的“淘析”作用。</p><p style="text-indent:25px">螺栓熱鍍鋅之后就要鈍化，但是鈍化一般都是在常溫下進(jìn)行的，較高的溫度也不會超過100℃，所以鈍化膜層中肯定會有結(jié)晶水，所以熱鍍鋅的鈍化膜層不耐高溫，一般70℃左右就會皮開裂了，就是因為其膜層中存在結(jié)晶水的緣故。而達(dá)克羅的成膜溫度較高(280℃左右)，所以在預(yù)熱的過程中，其膜層中的水分早已揮發(fā)掉。所以，達(dá)克羅的膜層要比鈍化層更致密，所以耐蝕性更好，尤其是耐高溫腐蝕。螺栓熱鍍鋅畢竟也是電鍍，所以會存在電力線分布的問題，而達(dá)克羅是一種涂料，所以可以用噴涂、離心甩干、浸漬的方式涂覆，涂覆要比電鍍的均勻。達(dá)克羅是一種新型的耐腐涂層。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="金屬表面達(dá)克羅處理多少錢,達(dá)克羅" src="https://tyunfile.71360.com/UploadFile/13915042526/637333457745166016/762642.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。這些零件的強度和硬度要求較高，電鍍處理會產(chǎn)生氫脆，如去氫不徹底，長時間承受動載荷容易發(fā)生撕裂或腐蝕疲勞，會給汽車行駛帶來安全隱患，尤其是對于載重汽車，其作業(yè)環(huán)境比較惡劣；所以對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。相對于部分傳統(tǒng)的電鍍工藝，達(dá)克羅具有更多的優(yōu)勢。達(dá)克羅生產(chǎn)廠家</p><p style="text-indent:25px">達(dá)克羅涂料是銀灰色粘性液體。金屬表面達(dá)克羅處理多少錢</p><p style="text-indent:25px">還有一些較大的工件，并不能采用浸液的方式來完成，這就需要采用機器設(shè)備將涂敷液噴涂在工件表面，采用噴涂方法的工件表面附著力差，抗腐蝕性能也會降低。表面涂敷上液體后，首先要用120℃的溫度烘烤10分鐘左右，這樣是要緩慢的蒸發(fā)掉涂敷液體中的水分，也讓涂敷液充分與工件接觸在一起。表面涂敷上液體后，首先要用120℃的溫度烘烤10分鐘左右，這樣是要緩慢的蒸發(fā)掉涂敷液體中的水分，也讓涂敷液充分與工件接觸在一起。高溫烘烤固化后的工件溫度會很高，要讓工件經(jīng)過冷卻系統(tǒng)快速冷卻，較后經(jīng)過檢驗后的工件就完了整個達(dá)克羅工藝。金屬表面達(dá)克羅處理多少錢</p><p style="text-indent:25px">常州捷邁特表面工程技術(shù)有限公司是一家工程技術(shù)咨詢服務(wù)；智能化、自動化各類涂裝設(shè)備、清洗設(shè)備、電鍍設(shè)備、達(dá)克羅涂覆設(shè)備的設(shè)計與制造；配套的環(huán)保設(shè)備的設(shè)計與制造；涂裝領(lǐng)域創(chuàng)新工藝、環(huán)境友好、綠色環(huán)保工藝技術(shù)、清潔生產(chǎn)技術(shù)的研發(fā)、應(yīng)用、推廣；（依法須經(jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動）的公司，致力于發(fā)展為創(chuàng)新務(wù)實、誠實可信的企業(yè)。常州捷邁特深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的無鉻水性鋅鋁涂料，智能化自動化各類涂裝設(shè)備，達(dá)克羅涂覆設(shè)備，清洗設(shè)備。常州捷邁特始終以本分踏實的精神和必勝的信念，影響并帶動團(tuán)隊取得成功。常州捷邁特創(chuàng)始人張建平，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1581332.html</p></div></div></div></div></div><div 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