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href="http://www.housewife-cheating.com/2020/08/64.html">螺旋鋼管比較少見的熱處理方法</a> </li> <li> <i class="iconfont icon-list-arrow Themefont"></i><a title="螺旋鋼管正確的焊接工藝參數簡單介紹" class="Themetxthover" href="http://www.housewife-cheating.com/2020/08/63.html">螺旋鋼管正確的焊接工藝參數簡單介紹</a> </li> </ul> </div> </div> <div class="body-right">  <style> .breadCrumb a { padding: 0 8px; /* line-height: 0px; */ max-width: 100px; margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } </style> <div class="breadCrumb">當前位置:首頁 > 行業新聞 > 螺旋鋼管比較少見的熱處理方法</div>  <div class="row"> <div class="news-nr-box"> <h1>螺旋鋼管比較少見的熱處理方法</h1> <h6><span>2020-08-18</span></h6> <p><span style="font-size:16px;">螺旋鋼管比較少見的熱處理方法<br />一、形變熱處理<br />高溫形變熱處理可提高螺旋鋼管的屈強比和彈性極限。提高螺旋鋼管的綜合力學性能、疲勞性能和抗應力松弛性能。降低鋼的韌脆轉化溫度，減小鋼的回火脆性，并具有工藝簡便和節能的優點。<br />螺旋鋼管采用高溫形變熱處理時效果非常顯著。具體工藝如下：加熱溫度為920—950℃，熱軋時形變量為10%—30%，空冷時間為10—30s，油淬;再進行400℃以上的普通回火或高溫快速回火。<br />二、鐵素體狀態化學熱處理<br />滲氮和氮碳共滲等鐵素體狀態化學熱處理可顯著提高螺旋鋼管表層硬度、耐磨性、耐腐蝕性、殘余壓應力及其疲勞壽命?；瘜W熱處理溫度一般在450—600℃范圍內，對于淬火、回火處理的螺旋鋼管，可把化學熱處理和回火合并進行;對于沉淀硬化型螺旋鋼管，化學熱處理溫度和沉淀硬化溫度一致。<br />隨著螺旋鋼管的應用越來越廣泛，對螺旋鋼管的技術性和產品的多樣性要求也越來越高。</span></p> </div> <div class="pager ks-clear"> <div class="previous fl"> <span>上一條：</span> <a href="http://www.housewife-cheating.com/2020/08/65.html">彎管加工的常用五種方法介紹 </a> </div> <div class="next fr"> <span style="float: left;"> 下一條：</span> <a href="http://www.housewife-cheating.com/2020/08/63.html">螺旋鋼管正確的焊接工藝參數簡單介紹</a> </div> <div class="clear"></div> </div> </div>  </div> <div class="clearfix"></div> </div> </div> <div class="clearfix"></div> <div class="tpl_footers" id="md_tpl_footers"> <div class="col-md-12"> <div class="ThemeFborder column column1"> <div class="friendLink" id="md_friendLink"></div> </div> <div class="column column1"> <div class="footers" id="md_footers"> <div class="footers-box Themebg"> <div class="footerBox clearfix"> <div class="text-center"> <div class="clearfix"> <div 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