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href="news_160.html">行業知識</a> ? <a>挖泥船補焊技術講解</a> </div> </div></div> <div style="clear:both"></div> </div></div><div id="mfid7" class="mf" style="margin: 15px; width: 96.8586%;"><div id="_ctl5_box" class="box166_1"> <div class="title"> <h2 class="title1" style="font-size: 20px; color: #333; margin-bottom: 10px; font-weight: normal;">挖泥船補焊技術講解</h2> <p> <span class="fromF">來源：</span> <span class="timeM">時間：2019-01-03 14:11:52</span> <span class="timeM">瀏覽次數：<label id="_ctl5_ClickRead" class="ClickRead"></label></span> </p> </div> <div class="contMain"> <div class="content"> <div id="_ctl5_nsContentDiv" class="nscontent"><p> 挖泥船由于經常會在未知的水下環境中工作，所以會受到水質和環境影響造成挖泥船表面的損壞,由于挖泥船的體型比較龐大，所以一般挖泥般廠家都會采用補焊的技術進行修復，下面我們就來講講挖泥船的補焊工作。 </p> <p> <br /> </p> <p> 挖泥船補焊技術講解 </p> <p> <br /> </p> <p> 對挖泥船表面進行補焊主要是為修復裂紋和補償磨損尺寸。挖泥船的表面大都是采用鋼結構，鋼的品種繁多其可焊性差異很大，這主要與鋼中的碳和合金元素的含量有關。 </p> <p> <br /> </p> <p> 一般來說含碳量越高，合金元素種類和數量越多，可焊性越差?？珊感圆钪饕冈诤附訒r容易產生裂紋，鋼的裂紋可分為焊縫金屬在冷卻時發生的熱裂紋和近焊縫區母材上由于脆化發生的冷裂紋兩類。 </p> <p> <br /> </p> <p> 熱裂紋只產生在挖泥船表面的焊縫金屬中，具有沿晶界分布的特點，其方向與焊縫的魚鱗狀波紋相垂直，在裂紋的斷口上可以看到發黑的氧化色彩。 </p> <p> <br /> </p> <p> 產生熱裂紋的主要原因是焊縫中碳和硫含量高，特別是硫的存在，在結晶時，所形成的低熔點硫化鐵以液態或半液態存在于晶間層中形成極脆弱的夾層，因而在收縮時即引起裂紋。 </p> <p> <br /> </p> <p> 冷裂紋主要發生在近焊縫區的母材上，產生冷裂紋的主要原因是鋼材的含碳量增高，其淬火傾向相應增大，母材近縫區受焊接熱的影響，加熱和冷卻速度都大，結果產生低塑性的淬硬組織。另外焊縫及熱影響區的含氫量隨焊縫的冷卻而向熱區擴散，那里的淬硬組織由于氫作用而碳化，即因收縮應力而導致裂紋產生。 </p> <p> <br /> </p> <p> 關于挖泥船補焊技術講解的相關內容就先簡單的為您介紹到這里，希望通過以上內容的介紹，能對您有所幫助。 </p> <p> <br /> </p> <p> 青州市巨龍環?？萍加邢薰臼且患覍Ｗ⒂谘邪l、設計、生產、銷售異型水上工程船舶及工作平臺，是疏浚設備、水域環保設備、采選礦設備和沙石處理設備的專業制造商，是中小型水上工程設備及礦沙處理設備的可靠服務商。 </p> <p> <br /> </p> <p> 作為一個生產商，巨龍環?？萍脊驹谙M者進行選擇設備的時候，根據消費者的具體需求設計獨特的工藝流程，拒絕“豆腐渣工程”，以確保每個消費者都能順利正常的進行生產。如果您還想進一步了解，可以咨詢廠家熱線：0536-3837236/3836888 </p></div> <div id="nsKey" class="key" >關鍵字：<a href="search.html?sear_key=" target="_blank"></a> </div> <div id="nsKey1" class="key" >本文網址：<a href="http://www.cosanvuongiare.com/news_view_249_160.html">http://www.cosanvuongiare.com/news_view_249_160.html</a></div> <div id="_ctl5_isHidePage" class="change"> 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