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alt="" src="http://www.myredapron.com/d/file/p/2019/08-06/771a1580be0bbfa7f5f36e2e5360f7c2.jpg" style="width: 409px; height: 313px;" /><br />超聲波探傷與的區別為：原理不同、用途不同、分類不同。<br />超聲波探傷是利用超聲能透入金屬材料的深處，并由一截面進入另一截面時，在界面邊緣發生反射的特點來檢查零件缺陷的一種方法，當超聲波束自零件表面由探頭通至金屬內部，遇到缺陷與零件底面時就分別發生反射波來，在熒光屏上形成脈沖波形，根據這些脈沖波形來判斷缺陷位置和大小。渦流檢測就是運用電磁感應原理，將正弦波電流激勵探頭線圈，當探頭接近金屬表面時，線圈周圍的交變磁場在金屬表面產生感應電流。對于平板金屬，感應電流的流向是以線圈同心的圓形，形似旋渦，稱為渦流。同時渦流也產生相同頻率的磁場，其方向與線圈磁場方向相反。<br />渦流通道的損耗電阻，以及渦流產生的反磁通，又反射到探頭線圈，改變了線圈的電流大小及相位，即改變了線圈的阻抗。因此，探頭在金屬表面移動，遇到缺陷或材質、尺寸等變化時，使得渦流磁場對線圈的反作用不同，引起線圈阻抗變化，通過渦流檢測儀器測量出這種變化量就能鑒別金屬表面有無缺陷或其它物理性質變化。<br />影響渦流場的因素有很多，諸如探頭線圈與被測材料的耦合程度，材料的形狀和尺寸、電導率、導磁率、以及缺陷等等。因此，利用渦流原理可以解決金屬材料探傷、測厚、分選等問題。<br />一、原理不同<br />1、超聲波探傷：利用超聲能透入金屬材料的深處，并由一截面進入另一截面時，在界面邊緣發生反射的特點來檢查零件缺陷。<br />2、渦流探傷：用激磁線圈使導電構件內產生渦電流，借助探測線圈測定渦電流的變化量，從而獲得構件缺陷的有關信息。<br /><br />二、用途不同<br />1、超聲波探傷：既可以用于實驗室，也可以用于工程現場。本儀器能夠廣泛地應用在制造業、鋼鐵冶金業、金屬加工業、化工業等需要缺陷檢測和質量控制的領域，也廣泛應用于航空航天、鐵路交通、鍋爐壓力容器等領域的在役安全檢查與壽命評估。它是無損檢測行業的必備。<br />2、渦流探傷：僅適用于導電材料，只能檢測表面或近表面層的缺陷，不便使用于形狀復雜的構件。在火力發電廠中主要應用于檢測凝汽器管、汽輪機葉片、汽輪機轉子中心孔和焊縫等。</span> </div> <hr> <p>上一篇：<a href='/industry/64.html'>有色金屬分選機類型和各自的安裝分選方法</a></p> <p>下一篇：<a href='/industry/77.html'>有色金屬分選是什么意思?</a></p> <div class="title clearfix mt20"> <h3 class="pull-left">相關產品</h3> </div> <div class="row"> <div class="col-md-4 product-item"> <div> <a href="/product/16.html" target="_blank" class="center-block" title="渦電流金屬分選機" ><img src="http://www.myredapron.com/d/file/p/2019/04-06/c14399685cbb2160530cc40d51246b91.jpg" alt="渦電流金屬分選機" class="img-responsive center-block"></a> <span class="center-block text-center"><a href="/product/16.html" target="_blank">渦電流金屬分選機</a></span> </div> </div> </div> </div> </div> </div> <div class="footer mt30"> <div class="container text-center"> <p> 版權所有 (?) 2017-2018 鞏義市三久環?？萍加邢薰? <a href="https://#baidu.com/web/welcome/ico?s=5417edc7c0e6b4039f42c385f61dcbfd" target="_blank" rel="nofollow">站長統計</a></p> <p>電話：13513893999</p> </div> </div> <script 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