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src="https://tyunfile.71360.com/WaterMark/UploadFile/Shzhonglin/637446946494907610/6796723.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="qp7evbd" 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>安徽白銅化學(xué)鍍鎳,化學(xué)鍍鎳</p><p><span>***更新：</span>2021-01-28 00:28:14</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="mgi2ogi" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海眾霖五金有限公司</a></p><p><span>聯(lián)系人：</span>李俊</p><p><span>郵箱: </span>lijun@zhong-lin.cn</p><p><span>電話: </span>15821195363</p><p><span>傳真: </span>020_</p><p><span>網(wǎng)址: </span>http://Shzhonglin.shop.88360.com</p><p><span>手機(jī): </span>020-15821195</p><p><span>地址: </span>上海市松江區(qū)民強(qiáng)路550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="2eyryzr" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="luipgnz" class="box"><p><p style="text-indent:25px">化學(xué)鍍鎳經(jīng)過多年的不斷探索與研究，近幾年已發(fā)展極成熟了，化學(xué)鍍鎳水幾乎適用于所有金屬表面鍍鎳。如：鋼鐵鍍鎳，不銹鋼鍍鎳，鋁鍍鎳，銅鍍鎳等等，它同樣適用于非金屬表面鍍鎳。比如：陶瓷鍍鎳，玻璃鍍鎳，金剛石鍍鎳，碳片鍍鎳，塑料鍍鎳，樹脂鍍鎳等等。使用范圍是非常***的?；瘜W(xué)鍍鎳的歷史與電鍍相比，比較短暫，在國(guó)外其真正應(yīng)用到工業(yè)**是70年代末80年代初的事。 1844年，A.Wurtz發(fā)現(xiàn)金屬鎳可以從金屬鎳鹽的水溶液中被次磷酸鹽還原而沉積出來(lái)?；瘜W(xué)鍍鎳技術(shù)的真正發(fā)現(xiàn)并使它應(yīng)用至今是在1944年，美國(guó)國(guó)家標(biāo)準(zhǔn)局的A.Brenner和G，安徽白銅化學(xué)鍍鎳.Riddell的發(fā)現(xiàn)，弄清楚了形成涂層的催化特性，發(fā)現(xiàn)了沉積非粉末狀鎳的方法，安徽白銅化學(xué)鍍鎳，使化學(xué)鍍鎳技術(shù)工業(yè)應(yīng)用有了可能性。學(xué)鍍鎳是一種化學(xué)溶液，安徽白銅化學(xué)鍍鎳，在鋼部件的表面形成一層化學(xué)鍍鎳膜，有效的隔斷鋼部件與腐蝕性介質(zhì)的接觸77.安徽白銅化學(xué)鍍鎳</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽白銅化學(xué)鍍鎳,化學(xué)鍍鎳" src="https://tyunfile.71360.com/WaterMark/UploadFile/Shzhonglin/637446946494907610/6796723.png"></div><p style="text-indent:25px">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?；び帽没瘜W(xué)鍍鎳的效果也同樣***。在苛性堿腐蝕條件下工作的閥門，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。化學(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。因此，對(duì)于上述強(qiáng)酸介質(zhì)，或者可能水解生成上述強(qiáng)酸的介質(zhì)中，不適于使用化學(xué)鍍鎳層。碳鋼緊固件鍍上25～50um厚的高磷化學(xué)鍍鎳層，代替不銹鋼緊固件，既克服了奧氏體不銹鋼的應(yīng)力腐蝕開裂問題，又節(jié)省了大量費(fèi)用。生產(chǎn)低密度聚乙烯的壓力容器內(nèi)壁25um，以防止鐵污染和因此所造成的聚乙烯變色。如果采用不銹鋼建造，其價(jià)格大約是化學(xué)鍍方法的兩倍。安徽化學(xué)鍍鎳公司學(xué)鍍鎳是一種化學(xué)溶液，在鋼部件的表面形成一層化學(xué)鍍鎳膜，有效的隔斷鋼部件與腐蝕性介質(zhì)的接觸2.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽白銅化學(xué)鍍鎳,化學(xué)鍍鎳" src="https://tyunfile.71360.com/WaterMark/UploadFile/Shzhonglin/637446945852300189/6913929.png"></div><p> ⑵特點(diǎn) </p> <p> 迄今為止，化學(xué)鍍鎳的發(fā)展已有50多年的歷史。經(jīng)過半個(gè)多世紀(jì)的研究開發(fā)，化學(xué)鍍鎳已進(jìn)入發(fā)展成熟期，其現(xiàn)狀可概括為：技術(shù)成熟、性能穩(wěn)定、功能多樣、用途***。 </p> <p> 用化學(xué)鍍鎳沉積的鍍層，有一些不同于電沉積層的特性。 </p> <p> ①以次磷酸鈉為還原劑時(shí)，由于有磷析出，發(fā)生磷與鎳的共沉積，所以化學(xué)鍍鎳層是磷呈彌散態(tài)的鎳磷合金鍍層，鍍層中磷的質(zhì)量分?jǐn)?shù)為1%～l5%，控制磷含量得到的鎳磷鍍層致密、無(wú)孔，耐蝕性遠(yuǎn)優(yōu)于電鍍鎳。以硼氫化物或氨基硼烷為還原劑時(shí)，化學(xué)鍍鎳層是鎳硼合金鍍層，硼的含量為1%～7%。只有以肼作還原劑得到的鍍層才是純鎳層，含鎳量可達(dá)到99．5%以上。 </p> <p> ②硬度高、耐磨性良好。電鍍鎳層的硬度*為l60～180HV，而化學(xué)鍍鎳層的硬度一般為400～700HV，經(jīng)適當(dāng)熱處理后還可進(jìn)一步提高到接近甚至超過鉻鍍層的硬度，故耐磨性良好，更難得的是化學(xué)鍍鎳層兼?zhèn)淞肆己玫哪臀g與耐磨性能。 </p><p style="text-indent:25px">食品加工業(yè)為應(yīng)用化學(xué)鍍鎳提供了一個(gè)巨大的潛在市場(chǎng)；之所以稱之為潛在的市場(chǎng)，是因?yàn)榛瘜W(xué)鍍鎳在食品工業(yè)的廣泛應(yīng)用中存在著障礙。比如在美國(guó)，F(xiàn)DA（美國(guó)食品和藥物管理署）對(duì)于化學(xué)鍍鎳在食品工業(yè)中的應(yīng)用尚末制訂出法規(guī)標(biāo)準(zhǔn)；通常，對(duì)于化學(xué)鍍鎳層在應(yīng)用于直接與食品接觸的情況，F(xiàn)DA采取個(gè)案處理的方式予以批準(zhǔn)。究其原因，主要是因?yàn)榻?jīng)典的化學(xué)鍍液配方中含有毒的鉛、鎘等重金屬離子作為穩(wěn)定劑的緣故。然而，許多現(xiàn)代的化學(xué)鍍鎳溶液中已經(jīng)不使用重金屬離子作穩(wěn)定劑了；顯然，這個(gè)障礙遲早將會(huì)被拆除。食品包裝機(jī)械中不與食品直接接觸的零件，如：軸承、輥筒、傳送帶、液壓系統(tǒng)和齒輪等為化學(xué)鍍鎳在食品工業(yè)中的典型應(yīng)用。學(xué)鍍鎳是一種化學(xué)溶液，在鋼部件的表面形成一層化學(xué)鍍鎳膜，有效的隔斷鋼部件與腐蝕性介質(zhì)的接觸7.</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="安徽白銅化學(xué)鍍鎳,化學(xué)鍍鎳" src="https://tyunfile.71360.com/WaterMark/UploadFile/Shzhonglin/637446946968579554/4151246.png"></div><p> 化學(xué)鍍鎳技術(shù)能廣為應(yīng)用的原因之一是鍍層具有優(yōu)越的耐蝕性能，它是陰極性鍍層，所以鍍層厚度及完整性是保護(hù)基材效果好壞的關(guān)鍵，否則反而加快基材的腐蝕，這點(diǎn)需充分予以重視。那么該如何提高化學(xué)鍍鎳的耐腐蝕性能呢？下面小編就為大家具體介紹一下： </p> <p> 基體質(zhì)量這是鍍層持量的基本保證，但往往被人們忽視。鍍前需了解工件材料的成分、狀態(tài)、冶金質(zhì)量及加工成型的過程，不適當(dāng)?shù)募庸?huì)造成應(yīng)力、微裂紋。工件上不應(yīng)有折疊、焊屑、毛刺、孔洞及砂眼等缺陷。鋼中的夾雜物，尤其是硫化物，不*影響鍍層的耐蝕性，還會(huì)毒化鍍液。 </p> <p> 鍍前處理基材上原有的潤(rùn)滑油或緩蝕劑是很難清洗凈的，處理不好不*會(huì)降低鍍層結(jié)合力，還會(huì)產(chǎn)生***而降低耐蝕性。除化學(xué)清洗法外，碳鋼基材常推薦使用電解清洗法，但這種清洗方法明顯地影響鍍層的耐蝕性。例如在堿性介質(zhì)中陽(yáng)極清洗會(huì)嗇鍍層孔隙率。化學(xué)鍍鎳是一種化學(xué)溶液，能與碳鋼等部件發(fā)生化學(xué)反應(yīng)，在鋼部件的表面形成一層化學(xué)鍍鎳膜。浙江白銅化學(xué)鍍鎳質(zhì)量保證</p><p style="text-indent:25px">化學(xué)鍍鎳相信大家通過之前的介紹對(duì)其有了一定的了解了，化學(xué)鍍鎳是一種化學(xué)溶液，能與碳鋼等部件發(fā)生化學(xué)。安徽白銅化學(xué)鍍鎳</p><p> 化學(xué)鎳的原子半徑為0.125nm，銅的原子半徑為0.128nm，銅和鎳均為FCC結(jié)構(gòu)晶體，二者可以無(wú)限互溶，在科研活動(dòng)和材料學(xué)的研究和教學(xué)中，銅鎳合金、鎳鈦合金都是研究、分析二元合金特性的很好的材料。在工業(yè)生產(chǎn)中，絕大多數(shù)的鎳材，用于制造不銹鋼、合金鋼、非鉄合金、鑄材、電鍍材料等。在不銹鋼中，除了含量較高的鉻以外，鎳和鉬都能輔助提高不銹鋼的耐蝕性。鎳，是個(gè)非常重要的合金鋼元素，對(duì)耐蝕、抗蠕變、耐高溫/低溫、耐磨都有很大影響。另外，鎳元素使用不當(dāng)，會(huì)影響鋼材的抗沖擊強(qiáng)度。以鋼材為**的鐵基材料，因?yàn)槊芏却?、?dǎo)電不良、易腐蝕等原因，在某些場(chǎng)合無(wú)法滿足人們的各種使用要求。 </p> <p> 除了冶煉過程中加入鎳，來(lái)改善不銹鋼的耐蝕性以外，鍍鎳，也是一種增強(qiáng)產(chǎn)品耐蝕性的一種好辦法。而以鎳和銅為基本材料的Monel合金，則更是廣泛應(yīng)用于各種泵、閥、石油冶煉設(shè)備、船舶及海洋工程設(shè)備中。安徽白銅化學(xué)鍍鎳</p><p style="text-indent:25px">上海眾霖五金有限公司致力于五金、工具，以科技創(chuàng)新實(shí)現(xiàn)***管理的追求。上海眾霖五金作為五金加工，金屬制品加工，機(jī)械設(shè)備及配件（除特種）生產(chǎn)、加工；金屬材料、汽摩配件、五金交電、化工產(chǎn)品（除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）銷售；模具設(shè)計(jì)、制造及銷售；從事貨物及技術(shù)的進(jìn)出口業(yè)務(wù)。的企業(yè)之一，為客戶提供良好的鍍鎳，鍍金，鍍錫，鍍銀。上海眾霖五金致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來(lái)良好體驗(yàn)。上海眾霖五金創(chuàng)始人黎翠華，始終關(guān)注客戶，創(chuàng)新科技，竭誠(chéng)為客戶提供良好的服務(wù)。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3038559.html</p></div></div></div></div></div><div id="oykbdfb" class="page-right twoColRt"><div id="fubxj8p" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="fkbd3xm" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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