摘要：<p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">西安</span></span><span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">不銹鋼地鐵車輛車體選材設計的耐腐蝕要求</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">西安</span></span><span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">不銹鋼地鐵車輛具有環(huán)保、免油漆、耐腐蝕等優(yōu)點，帶給人們</span>“不生銹、易清潔、**質(zhì)感”的美好印象。不銹鋼的金屬質(zhì)感符合現(xiàn)代審美，在國外城市軌道交通中得到了大量應用，在國內(nèi)，不銹鋼因為新基建而越來越多地用于國內(nèi)城市軌道交通中。</span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">據(jù)小編了解，目前國內(nèi)不銹鋼地鐵車輛的車體材料設計多數(shù)采用</span>“不銹鋼＋局部碳鋼”的混合設計模式。</span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">那</span>“不銹鋼＋局部碳鋼”的混合設計模式是什么呢？即整個地鐵車輛的車體僅端牽枕采用碳鋼材料，其余部分為不銹鋼材料。端牽枕采用碳鋼材料主要是為了解決端牽枕部位的厚板承力和焊接變形等問題。</span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">那么不銹鋼地鐵車輛車體材料主要是哪些不銹鋼材質(zhì)呢？即為耐腐蝕性能優(yōu)良的</span>SUS301L<span style="font-family:宋體;">系列奧氏體不銹鋼，其中包括</span><span style="font-family:Calibri;">SUS301L-ST</span><span style="font-family:宋體;">?</span><span style="font-family:Calibri;">SUS301L-MT</span><span style="font-family:宋體;">?</span><span style="font-family:Calibri;">SUS301L-HT</span><span style="font-family:宋體;">?</span><span style="font-family:Calibri;">SUS301L-DLT</span><span style="font-family:宋體;">等多個強度級別的不銹鋼材質(zhì)。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">講到這里，小編突然想起</span>4<span style="font-family:宋體;">個月前曾寫過《“新基建”少不了</span><span style="font-family:Calibri;">301L</span><span style="font-family:宋體;">不銹鋼的參與！》這篇文大家有興趣的可以看看。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">言歸正傳，選擇</span>SUS301L<span style="font-family:宋體;">不銹鋼材質(zhì)主要考慮地鐵車輛車體部件的強度需求以及成型要求。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:宋體;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-ascii-font-family:Calibri;mso-hansi-font-family:Calibri;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;"><span style="font-family:宋體;">地鐵車輛車體的底架端部結構為碳鋼材料，牽枕緩承力部件主要采用具有良好冷成型性能的高強度耐候鋼。不銹鋼材料的耐腐蝕性能較好，而且表面不需要再涂漆，但是外露的弧焊焊縫部位要進行鈍化處理，碳鋼部件外露面、異種鋼接頭混合區(qū)域都要進行油漆處理。</span></span> </p> <p style="margin:0pt;"> <span style="font-family:Calibri;font-size:10.5pt;mso-spacerun:&quot;yes&quot;;mso-bidi-font-family:&quot;Times New Roman&quot;;mso-font-kerning:1.0000pt;mso-fareast-font-family:宋體;">&nbsp;</span> </p>