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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="lgtlnpm" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333783126796875/2752202.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="bln2mog" 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>常熟鐵化學(xué)鍍鎳工藝,化學(xué)鍍鎳</p><p><span>***更新：</span>2021-01-30 03:13:33</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="9o2zw8w" 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="fskcugi" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="hkmegxu" class="box"><p><p style="text-indent:25px">化學(xué)鍍鎳層的耐腐蝕性：化學(xué)鍍鎳和電鍍鉻一樣，是一種障礙鍍層，它是將基體金屬和外界腐蝕環(huán)境隔絕而達(dá)到防護(hù)目的。鉻具有良好的耐腐蝕性，然而電鍍鉻層由于高應(yīng)力引起裂紋，不能保護(hù)基體金屬免受腐蝕?；瘜W(xué)鍍鎳的的耐蝕性比電鍍鉻要好，則是由于化學(xué)鍍鎳是非晶態(tài)結(jié)構(gòu)，非晶態(tài)是一種均勻的單相組織，不存在晶界、位錯(cuò)、層錯(cuò)之類缺陷，因而在腐蝕介質(zhì)中不易形成腐蝕微電池。同時(shí)，化學(xué)鍍鎳層和基體結(jié)合均勻，致密，常熟鐵化學(xué)鍍鎳工藝，腐蝕介質(zhì)難以透過(guò)鍍層而浸蝕基體，具有極好的耐蝕作用?；瘜W(xué)鍍鎳磷非晶態(tài)合金鍍層幾乎不受堿液、中性鹽液、水和海水的腐蝕，常熟鐵化學(xué)鍍鎳工藝，化學(xué)鍍鎳層在HCl和H2SO4中的耐蝕性比不銹鋼優(yōu)異得多，它能耐多種化學(xué)介質(zhì)的浸蝕，常熟鐵化學(xué)鍍鎳工藝。例如，非氧化性鹽、高溫高濃度燒堿、硫化氫、乳酸等。化學(xué)鍍鎳廢液由于蘋(píng)果酸鈣的溶解度比較大，除了采用鈣鹽法以外，還要利用進(jìn)一步提高pH值的方法。常熟鐵化學(xué)鍍鎳工藝</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常熟鐵化學(xué)鍍鎳工藝,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783126796875/2752202.png"></div><p style="text-indent:25px">由于化學(xué)鍍鎳層具有優(yōu)越的均勻性、硬度、耐磨和耐蝕性等綜合物理化學(xué)性能，該項(xiàng)技術(shù)已經(jīng)得到普遍應(yīng)用，幾乎難以找到一個(gè)工業(yè)不采用化學(xué)鍍鎳技術(shù)。據(jù)報(bào)道，化學(xué)鍍鎳在各個(gè)工業(yè)中應(yīng)用的比例大致如下：航空航天工業(yè)：9%，汽車工業(yè)：5%，電子計(jì)算機(jī)工業(yè)：15%，食品工業(yè)：5%，機(jī)械工業(yè)：15%，核工業(yè)：2%，石油工業(yè)：10%，塑料工業(yè)：5%，電力輸送工業(yè)：3%，印刷工業(yè)：3%，泵制造業(yè)：5%，閥門(mén)制造業(yè)：17%，其他：6%。世界工業(yè)化國(guó)家的化學(xué)鍍鎳的應(yīng)用經(jīng)歷了80年代空前的發(fā)展，平均年凈增速率高達(dá)10%～15%；預(yù)計(jì)化學(xué)鍍鎳的應(yīng)用將會(huì)持續(xù)發(fā)展，平均年凈值速率將降低至6%左右，而進(jìn)入發(fā)展成熟期。昆山環(huán)?；瘜W(xué)鍍鎳添加劑化學(xué)鍍鎳的發(fā)展已有50多年的歷史。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常熟鐵化學(xué)鍍鎳工藝,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783170947266/6080931.png"></div><p style="text-indent:25px">化學(xué)鍍鎳層的工藝特點(diǎn)：很多材料和零部件的功能如耐蝕、抗高溫氧化性等均是由材料和零部件的表面層體現(xiàn)出來(lái)，在一般情況下可以采用某些具有特殊功能的化學(xué)鍍鎳層取代用其他方法制備的整體實(shí)心材料，也可以用廉價(jià)的基體材料化學(xué)鍍鎳代替有貴重原材料制造的零部件，因此，化學(xué)鍍鎳的經(jīng)濟(jì)效益是非常大的?？沙练e在各種材料的表面上，例如：鋼鎳基合金、鋅基合金、玻璃、陶瓷、塑料、半導(dǎo)體等材料的表面上，從而為提高這些材料的性能創(chuàng)造了條件。</p><p style="text-indent:25px">應(yīng)用化學(xué)鍍鎳比較普遍的是閥門(mén)制造業(yè)。鋼鐵制造的球閥、閘閥、旋閥、止逆閥和蝶閥等等，經(jīng)高磷化學(xué)鍍鎳25～75um，可提高耐腐蝕性和使用壽命。化工用泵化學(xué)鍍鎳的效果也同樣明顯。在苛性堿腐蝕條件下工作的閥門(mén)，應(yīng)采用鍍層含磷量1%～2%的低磷化學(xué)鍍鎳。因?yàn)樵诳列詨A腐蝕條件下，低磷化學(xué)鍍鎳層的年腐蝕速率約為2.5um，優(yōu)于中磷或高磷化學(xué)鍍鎳層?；瘜W(xué)鍍鎳層在強(qiáng)氧化性酸，如濃硝酸、濃硫酸等介質(zhì)中不耐蝕。盡管在鹽酸中的腐蝕速率低于奧氏體不銹鋼，耐蝕性仍然是不夠的?；瘜W(xué)鍍鎳在pH值大于9的條件下，通入氯氣，此時(shí)Cl2主要以CLO-的形式存在。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="常熟鐵化學(xué)鍍鎳工藝,化學(xué)鍍鎳" src="https://tyunfile.71360.com/UploadFile/haolin123/637333783149238281/5920410.png"></div><p style="text-indent:25px">化學(xué)鍍鎳沉積的特性：1、化學(xué)穩(wěn)定性高、鍍層結(jié)合力好。在大氣中以及在其他介質(zhì)中，化學(xué)鍍鎳層的化學(xué)穩(wěn)定性高于電鍍鎳層的化學(xué)穩(wěn)定性。與通常的鋼鐵、銅等基體的結(jié)合良好，結(jié)合力不低于電鍍鎳層和基體的結(jié)合力。2、由于化學(xué)鍍鎳層含磷量的不同及鍍后熱處理工藝的不同，鍍鎳層的物理化學(xué)特性，如硬度、抗蝕性能、耐磨性能、電磁性能等具有豐富多彩的變化，是其他鍍種少有的。所以，化學(xué)鍍鎳的工業(yè)應(yīng)用及工藝設(shè)計(jì)具有多樣性和**性的特點(diǎn)?；瘜W(xué)鍍鎳是用還原劑把溶液中的鎳離子還原沉積在具有催化活性的表面上。昆山環(huán)?；瘜W(xué)鍍鎳添加劑</p><p style="text-indent:25px">化學(xué)鍍鎳是用于提高金屬制件的表面的抗蝕性和耐磨性，增加光澤和美觀。常熟鐵化學(xué)鍍鎳工藝</p><p style="text-indent:25px">化學(xué)鍍鎳不僅可以在金屬表面施鍍，通過(guò)特殊的活化、敏化處理，還能夠在非金屬表面上進(jìn)行?；瘜W(xué)鍍鎳設(shè)備簡(jiǎn)單，不需要電源及陽(yáng)極，只要在溫度、pH值工藝參數(shù)合理的條件下，把待鍍零件浸入在鍍液中即可?；瘜W(xué)鍍鎳的結(jié)合力、防腐性能都優(yōu)于電鍍。某些化學(xué)鍍層還有特殊的物理化學(xué)性能?；瘜W(xué)鍍鎳硬度高，耐磨性好，化學(xué)鍍鎳層熱處理后硬度達(dá)Hv1100，工模具鍍鎳后一般壽命提高3倍以上。化學(xué)鍍鎳耐腐蝕強(qiáng)，化學(xué)鍍鎳層在酸、堿、鹽、氨和海水等介質(zhì)中都具有很好的耐腐蝕性，其耐腐蝕性勝于不銹鋼。常熟鐵化學(xué)鍍鎳工藝</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3072843.html</p></div></div></div></div></div><div id="e89hj7z" class="page-right 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