热力发电
熱力髮電
열력발전
THERMAL POWER GENERATION
2015年
7期
66-71,77
,共7页
王崇斌%徐雪元%诸育枫%金用强%佟辉%王煜%卢小莉
王崇斌%徐雪元%諸育楓%金用彊%佟輝%王煜%盧小莉
왕숭빈%서설원%제육풍%금용강%동휘%왕욱%로소리
超超临界%600 MW 机组%锅炉%主蒸汽温度%水冷壁%选材
超超臨界%600 MW 機組%鍋爐%主蒸汽溫度%水冷壁%選材
초초림계%600 MW 궤조%과로%주증기온도%수랭벽%선재
ultra supercritical%600 MW unit%boiler%main steam temperature%water wall%material selection
针对超超临界600 MW 机组主蒸汽温度为700℃的锅炉(700℃锅炉)水冷壁选材问题,分析比较了 T12,12Cr1MoVG,T23,T24,T91,T92,T122(HCM12A),VM12 SHC 和617mod 等备选管材的适用性,包括母材和焊接接头的持久强度、热疲劳和蠕变疲劳,母材和焊接接头的抗蒸汽腐蚀和抗烟气腐蚀性能,热成型性能及可焊性。同时,提出超超临界700℃锅炉水冷壁应选用 T92高强度马氏体钢管和617mod 镍基合金管,应采用电加热板对 T92水冷壁管对接焊接接头进行焊后热处理。
針對超超臨界600 MW 機組主蒸汽溫度為700℃的鍋爐(700℃鍋爐)水冷壁選材問題,分析比較瞭 T12,12Cr1MoVG,T23,T24,T91,T92,T122(HCM12A),VM12 SHC 和617mod 等備選管材的適用性,包括母材和銲接接頭的持久彊度、熱疲勞和蠕變疲勞,母材和銲接接頭的抗蒸汽腐蝕和抗煙氣腐蝕性能,熱成型性能及可銲性。同時,提齣超超臨界700℃鍋爐水冷壁應選用 T92高彊度馬氏體鋼管和617mod 鎳基閤金管,應採用電加熱闆對 T92水冷壁管對接銲接接頭進行銲後熱處理。
침대초초림계600 MW 궤조주증기온도위700℃적과로(700℃과로)수랭벽선재문제,분석비교료 T12,12Cr1MoVG,T23,T24,T91,T92,T122(HCM12A),VM12 SHC 화617mod 등비선관재적괄용성,포괄모재화한접접두적지구강도、열피로화연변피로,모재화한접접두적항증기부식화항연기부식성능,열성형성능급가한성。동시,제출초초림계700℃과로수랭벽응선용 T92고강도마씨체강관화617mod 얼기합금관,응채용전가열판대 T92수랭벽관대접한접접두진행한후열처리。
The properties and serviceability of candidate water wall materials for 600 MW ultra supercritical (USC)unit boilers with main steam temperature of 700 ℃ were investigated,such as T12,12Cr1MoVG, T23,T24,T91,T92,T122(HCM12A),VM12 SHC and 617 mod.According to analysis on these materials'performances,including the rupture strength,thermal fatigue,creep fatigue,steam-corrosion resistance, gas-corrosion resistance,thermal mechanical properties and weldabilities,it suggests the high-strength mar-tensite steel T92 and nickel alloy 617 mod should be selected as the water wall material for 700 ℃ USC boilers.During installation,post weld heat treatment should be carried out for the T92 welded joints using electric heating panel.
