摘要：<p class="MsoNormal"> <span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">雙相不鏽鋼管的比重及應(yīng)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;">雙相不鏽鋼管的比重是</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，耐腐蝕性能到底怎麼樣呢？讓我們一起來看一看</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;">不鏽鋼無縫管</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，專用於抗純硫酸腐蝕。</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;">對無機酸，尤其是那些包含氯化物的無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;">等級不能用於鹽酸環(huán)境中，它可能會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;">雙相鋼可以用於稀釋的鹽酸環(huán)境裡，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晶間中的碳化物沉澱的風(fēng)險，因此，這個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(yīng)力腐蝕開裂：由於其較高的合金含量，</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)於</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;">雙相鋼的複式結(jié)構(gòu)使其具有較強的抗應(yīng)力腐蝕開裂的能力。</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，高性能的不鏽鋼在</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(guī)定的。各種實驗結(jié)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： 裂縫在建築等方麵幾乎是不可避免的，這使得不鏽鋼在氯化物的環(huán)境裡更易受到腐蝕。</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;">）雙相不鏽鋼的強度及抗腐蝕能力較強，主要用於化學(xué)加工、石油化工和海底設(shè)備。它具有較強的抗氯化物腐蝕能力，較高的導(dǎo)熱性和較低的熱膨脹係數(shù)。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。它的衝擊強度也很高，</span><span style="font-family:'Times New Roman';">2507</span><span style="font-family:宋體;">合金不適宜用在高於</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;">它的韌性會降低。</span><o:p></o:p> </p> <p class="MsoNormal"> <span style="font-family:宋體;">超級雙相不鏽鋼</span><span style="font-family:'Times New Roman';">2507(S32750)</span><span style="font-family:宋體;">是比雙相不鏽鋼</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(yīng)用於海上石油平臺（熱交換器管，水處理和供水係統(tǒng)，消防係統(tǒng)，噴水係統(tǒng)，穩(wěn)水係統(tǒng)），脫鹽（淡化）設(shè)備（</span><span style="font-family:'Times New Roman';">Ro</span><span style="font-family:宋體;">設(shè)備中的高壓管，海水管）等特殊化工環(huán)境設(shè)備中。名稱</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(biāo)</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;">雙相不鏽鋼管</span><span style="font-family:宋體;">應(yīng)用領(lǐng)域有：石油天然氣工業(yè)設(shè)備；離岸平臺、熱交換器、水下設(shè)備、消防設(shè)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;">係統(tǒng)、工業(yè)洗刷係統(tǒng)、吸收塔等。</span><o:p></o:p> </p>