摘要：<p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管的比重及應用領(lǐng)域</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管的比重是</span><span style="font-family:'Times New Roman';">8.03g/cm3</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼是高合金超級雙相鋼，耐腐蝕性能到底怎么樣呢？讓我們一起來(lái)看一看</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">1</span><span style="font-family:宋體;">、一般腐蝕和</span><span style="font-family:'Times New Roman';">904L</span><span style="font-family:宋體;">不銹鋼無(wú)縫管</span><span style="font-family:宋體;">相比，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼對稀釋的混有氯根離子的硫酸具有更強的抗腐蝕能力。</span><span style="font-family:'Times New Roman';">904L</span><span style="font-family:宋體;">是奧氏體狀態(tài)的合金，專(zhuān)用于抗純硫酸腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的較高的鉻及鉬含量使其對有機酸如甲酸、乙酸等具有較強的抗整體腐蝕的能力。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼</span><span style="font-family:宋體;">對無(wú)機酸，尤其是那些包含氯化物的無(wú)機酸也具有較強的抗腐蝕能力。</span><span style="font-family:'Times New Roman';">316L</span><span style="font-family:宋體;">等級不能用于鹽酸環(huán)境中，它可能會(huì )遭到局部腐蝕或整體腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼可以用于稀釋的鹽酸環(huán)境里，具有較強的抗斑損及抗裂隙腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2</span><span style="font-family:宋體;">、晶間腐蝕：</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼較低的碳含量大大地降低了在熱處理時(shí)晶間中的碳化物沉淀的風(fēng)險，因此，這個(gè)合金具有很強的抵抗與碳化物相關(guān)的晶間腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">3</span><span style="font-family:宋體;">、應力腐蝕開(kāi)裂：由于其較高的合金含量，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的抗腐蝕能力及強度均優(yōu)于</span><span style="font-family:'Times New Roman';">2205</span><span style="font-family:宋體;">。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼的復式結構使其具有較強的抗應力腐蝕開(kāi)裂的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">4</span><span style="font-family:宋體;">、蝕損腐蝕：測驗鋼鐵產(chǎn)品在含有氯化物的溶液中的抗蝕損腐蝕能力的方法有很多種，高性能的不銹鋼在</span><span style="font-family:'Times New Roman';">1M</span><span style="font-family:宋體;">氯化鈉溶液中的蝕損的臨界溫度是有規定的。各種實(shí)驗結果證明了</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼有**的抗蝕損腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">5</span><span style="font-family:宋體;">、裂縫腐蝕： 裂縫在建筑等方面幾乎是不可避免的，這使得不銹鋼在氯化物的環(huán)境里更易受到腐蝕。</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相鋼具有很強的抗裂縫腐蝕的能力。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">（</span><span style="font-family:'Times New Roman';">UNS S32750</span><span style="font-family:宋體;">）雙相不銹鋼的強度及抗腐蝕能力較強，主要用于化學(xué)加工、石油化工和海底設備。它具有較強的抗氯化物腐蝕能力，較高的導熱性和較低的熱膨脹系數。較高的鉻、鉬及氮含量氏它具有很高的抗斑蝕、裂隙腐蝕及一般腐蝕的能力。它的沖擊強度也很高，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">合金不適宜用在高于</span><span style="font-family:'Times New Roman';">570</span><span style="font-family:宋體;">℃的溫度環(huán)境下</span><span style="font-family:'Times New Roman';">,</span><span style="font-family:宋體;">長(cháng)期處在這樣的環(huán)境下</span><span style="font-family:'Times New Roman';">,</span><span style="font-family:宋體;">它的韌性會(huì )降低。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:宋體;">超級雙相不銹鋼</span><span style="font-family:'Times New Roman';">2507(S32750)</span><span style="font-family:宋體;">是比雙相不銹鋼</span><span style="font-family:'Times New Roman';">2205(S31803)</span><span style="font-family:宋體;">具有更高的耐腐蝕性及更優(yōu)的機械性能。常應用于海上石油平臺（熱交換器管，水處理和供水系統，消防系統，噴水系統，穩水系統），脫鹽（淡化）設備（</span><span style="font-family:'Times New Roman';">Ro</span><span style="font-family:宋體;">設備中的高壓管，海水管）等特殊化工環(huán)境設備中。名稱(chēng)</span><span style="font-family:'Times New Roman';">S32750</span><span style="font-family:宋體;">，</span><span style="font-family:'Times New Roman';">SAF2507 </span><span style="font-family:宋體;">，</span><span style="font-family:'Times New Roman';">F53 </span><span style="font-family:宋體;">，國標</span><span style="font-family:'Times New Roman';">00Cr25Ni7Mo4N</span><span style="font-family:宋體;">。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不銹鋼管</span><span style="font-family:宋體;">應用領(lǐng)域有：石油天然氣工業(yè)設備；離岸平臺、熱交換器、水下設備、消防設備；</span> 化學(xué)加工工業(yè)、器皿與管道業(yè)； 脫鹽植物、海底管道； 機械部件<span style="font-family:'Times New Roman';">(</span><span style="font-family:宋體;">高強度、抗腐蝕部件</span><span style="font-family:'Times New Roman';">)</span><span style="font-family:宋體;">、 能源工業(yè)</span><span style="font-family:'Times New Roman';">FGD</span><span style="font-family:宋體;">系統、工業(yè)洗刷系統、吸收塔等。</span><o:p></o:p> </p>