600 MW机组凝汽器不锈钢管腐蚀原因分析

常亮,王锋涛,张小霓,王卫军,薛昌刚,王超煜

Analysis on the corrosion causes of stainless steel tubes in condensers of 600 MW unit

Liang Chang,Fengtao Wang,Xiaoni Zhang,Weijun Wang,Changgang Xue,Chaoyu Wang

表2 常用排号的不锈钢管的化学成分对照

% 统一数字代码 牌号 化学成分 C Si Mn P S Ni Cr Mo S30408 06Cr19Ni10 0.08 1.00 2.00 0.045 0.030 8.00~11.00 18.00~20.00 — S30403 022Cr19Ni10 0.03 1.00 2.00 0.045 0.030 8.00~12.00 18.00~20.00 — S31608 06Cr17Ni12Mo2 0.08 1.00 2.00 0.045 0.030 10.00~14.00 16.00~18.00 2.00~3.00 S31603 022Cr17Ni12Mo2 0.03 1.00 2.00 0.045 0.030 10.00~14.00 16.00~18.00 2.00~3.00 S31708 06Cr19Ni13Mo3 0.08 1.00 2.00 0.045 0.030 11.00~15.00 18.00~20.00 3.00~4.00 S31703 022Cr19Ni13Mo3 0.03 1.00 2.00 0.045 0.030 11.00~15.00 18.00~20.00 3.00~4.00 S32168 06Cr18Ni11Ti 0.08 1.00 2.00 0.045 0.030 9.00~12.00 17.00~19.00 3.00~4.00