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鍋爐用不銹鋼板材的特點

發布時間:2021-10-23  來源: 湖北冠亞不銹鋼有限公司 點擊:82次

  鍋爐用武漢不銹鋼板材由于長期在高溫和高壓條件下工作,材料將發生蠕變、塑性和韌性下降,原始組織改變,產生腐蝕等。 所以,作為鍋爐用的鋼板應具備:

  1、足夠的持久強度;

  2、足夠的塑性變形能力;

  3、較小的時效傾向和熱脆性;

  4、不銹鋼具有高的抗氧化、耐煤灰、耐天然氣高溫下腐蝕、蒸汽和應力腐蝕性能;

  5、良好的組織穩定性以及良好的工藝性能。

  武漢不銹鋼板的鋼種有碳鋼以及珠光體、鐵素體和奧氏體型不銹耐熱鋼。為了提高火力發電機組的熱效率、降低燃耗,世界各國均以發展大容量、高參數(高溫、高壓)火電機組(1000MW以上)為主,蒸汽壓力提高到31.5~34.3MPa,過熱蒸汽溫度達595~650℃,向超高壓臨界壓力發展,這樣就對高壓鋼板材提出了更高的要求。


文章來源于湖北冠亞不銹鋼有限公司官網:http://www.szxs-hydp.com


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