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margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;">在鋼鐵廠生產鋼鐵，成品出廠一般都要經過發黑劑發黑處理，發黑是鋼鐵材料的一種處理方式，鋼鐵發黑處理做也是一個技術含量比較高的工藝流程，詳細如下：</p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"><br style="margin: 0px; padding: 0px;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"><img src="http://www.archadeck-austin.com/upfile/201606/2016060576813833.jpg" style="border: 0px; max-width: 880px; vertical-align: middle; font-family: 微軟雅黑; font-size: 14px; white-space: normal; background-color: rgb(255, 255, 255);"/></p><p><span style="color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px;">將鋼材或鋼件在空氣-水蒸氣或化學藥物中加熱到適當溫度使其表面形成一層藍色或黑色氧化膜的工藝，也稱發藍。</span><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/><span style="color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px;">黑色金屬表面經發黑劑處理后所形成的氧化膜，其外層主要是四氧化三鐵，內層為氧化亞鐵。處理方式及應用范圍：鋼鐵零件的發黑可在亞硝酸鈉和硝酸鈉的熔融鹽中進行，也可在高溫熱空氣及500℃以上的過熱蒸氣中進行，更常用的是在加有亞硝酸鈉的濃苛性鈉中加熱。發藍時的溶液成分、反應溫度和時間依鋼鐵基體的成分而定。發黑膜的成分為磁性氧化鐵，厚度為0.5～1.5微米，顏色與材料成分和工藝條件有關，有灰黑、深黑、亮藍等。</span><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/><span style="color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px;">單獨的發黑膜抗腐蝕性較差，但經涂油涂蠟或涂清漆后，抗蝕性和抗摩擦性都有所改善。發黑時，工件的尺寸和光潔度對質量影響不大。故常用于精密儀器、光學儀器、工具、硬度塊及機械行業中的標準件等。</span><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/><br style="margin: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;"/></p><p style="margin-top: 0px; margin-bottom: 0px; padding: 0px; color: rgb(102, 102, 102); font-family: 微軟雅黑; font-size: 14px; white-space: normal;">如果還有什么需要解決，可以咨詢長沙阿凡達公司，長沙阿凡達有13年技術經驗，能為您提供提供一站式的金屬表面前處理劑，可根據客戶的需求定制合適的前處理工藝。</p><p><br/></p></div> <div class="list_page"></div> </div> <div class="item">作者：pengli　來源：　發布時間：2019/7/30 17:48:00　人氣：<span id="hits">222</span></div> <div class="infodot"></div> <div class="pre">上一篇： <a href="/changjianwenti/792.html" title="噴漆房油漆廢水用什么藥來處理？">噴漆房油漆廢水用什么藥來處理？</a> </div> <div class="next">下一篇： <a href="/changjianwenti/829.html" title="脫漆劑能大面積脫漆嗎？">脫漆劑能大面積脫漆嗎？</a> </div> </div> </div> </div> </div> </div>  <div class="footer"> <div class="foot-main"> <div class="main clearfix"> <div class="end-logo"><img src="/theme/default/images/end-logo.png" alt="長沙阿凡達公司logo" /></div> <div class="foot-cell"> <ul class="foot-nav"> <li><a href="/">網站首頁</a></li> <li class="line">|</li> <li><a href="/zgjcxj/">中性脫漆劑</a></li> <li class="line">|</li> <li><a href="/ztqj/">酸性脫漆劑</a></li> <li class="line">|</li> <li><a href="/zqcclj/">堿性脫漆劑</a></li> <li class="line">|</li> <li><a href="/chanpanzs/">其他產品</a></li> <li class="line">|</li> <li><a href="/xianchangyingyong/">應用案例</a></li> <li class="line">|</li> <li><a href="/zhaopinhezuo/">合作合伙</a></li> <li class="line">|</li> <li><a href="/guanyuwomen/">關于我們</a></li> </ul> <div class="foot-info clearfix"> <div class="info-cell"> <div class="hd">長沙阿凡達環?？萍加邢薰?/div> <div class="bd"> <p>電話：0731-88619255 傳真：0731-88619255 手機：135 1748 1259</p> <p>地址：長沙河西高新技術產業開發區觀沙嶺工業園</p> <p>長沙阿凡達環?？萍加邢薰?版權所有  備案號：<a target="_blank" rel="nofollow">湘ICP備19023158號</a> </p> </div> </div> <ul class="wx-group"> <li> <img src="/theme/default/images/x.jpg" alt="長沙阿凡達環?？萍加邢薰疚⑿? /> <p>掃一掃，加微信</p> </li> </ul> </div> </div> </div> </div> <div class="foot-bar">阿凡達公司主營環保脫漆劑,脫漆劑,中性除銹劑,鋼筋除銹劑,多功能漆前處理劑,漆霧凝聚劑,鋼鐵常溫發黑劑,粘塵劑,硅烷處理劑,無磷清洗脫脂劑批發的生產廠家。 </div> </div>  <div class="fixed-side"> <div class="hd"><img src="/theme/default/images/txt.png" alt="鏡面增光耐蝕劑"></div> <div class="bd"> <div class="wx-bd"> <img src="/theme/default/images/x.jpg" alt="長沙阿凡達環?？萍加邢薰竟疚⑿?> <p>掃碼加微信</p> </div> </div> <div class="bd"> <ul class="dianpu"> <li><a target="_blank" rel="nofollow"><img src="/theme/default/images/taobao.jpg" width="20"> 阿凡達淘寶旗艦店</a></li> <li><a target="_blank" rel="nofollow"><img src="/theme/default/images/alibaba.jpg" width="20"> 阿凡達百度愛采購</a></li> </ul> </div> <div class="bd"> <ul class="qk-list"> <li><a target="_blank" rel="nofollow" style="background: url(/theme/default/images/zixun.png) left center no-repeat;">在線咨詢</a></li> <li><a target="_blank" rel="nofollow">售前咨詢</a></li> <li><a target="_blank" rel="nofollow">售后服務</a></li> </ul> </div> <div class="ft"> <div class="tel-box"> <div class="txt">服務熱線</div> <div class="ttnum">135 1748 1259</div> </div> </div> </div>  <script> var _hmt = _hmt || []; 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