热力发电Issue(7)：66-71,77,7.DOI:10.3969/j.issn.1002-3364.2015.07.066
主蒸汽温度700℃超超临界锅炉水冷壁选材分析
Material selection for water wall of ultra supercritical unit boilers with steam temperature of 700 ℃
摘要
Abstract
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.关键词
超超临界/600 MW 机组/锅炉/主蒸汽温度/水冷壁/选材Key words
ultra supercritical/600 MW unit/boiler/main steam temperature/water wall/material selection分类
能源科技引用本文复制引用
王崇斌,徐雪元,诸育枫,金用强,佟辉,王煜,卢小莉..主蒸汽温度700℃超超临界锅炉水冷壁选材分析[J].热力发电,2015,(7):66-71,77,7.基金项目
国家高技术研究发展计划(863计划)项目(2012AA050502) （863计划）
