安徽省内电网设备常用Q235和40Cr钢大气腐蚀特性及其规律

李乐民, 张洁, 卞亚飞, 缪春辉, 陈国宏, 汤文明

Atmospheric Corrosion Characteristics and Regularity of the Q235, 40Cr Steels Commonly-used in Power Grid Equipment in Anhui Province

LI Lemin, ZHANG Jie, BIAN Yafei, MIAO Chunhui, CHEN Guohong, TANG Wenming

表3 安徽省相关地市Q235和40Cr钢试样的腐蚀速率及等级

Table 3 Corrosion rates and grades of the Q235 and 40Cr steel samples in the relevant cities of Anhui province

City Q235 steel 40Cr steel Average corrosion rate / μm·a-1 b Grade Average corrosion rate / μm·a-1 b Grade 1 a 3 a 1 a 3 a Anqing 22.90 13.11 0.49 C2 23.11 12.36 0.43 C2 Chizhou 27.49 13.36 0.34 C3 25.93 13.15 0.38 C3 Fuyang 25.41 12.90 0.38 C3 24.82 12.72 0.39 C3 Huainan 25.84 12.23 0.32 C3 25.41 12.66 0.37 C3 Maanshan 29.19 15.15 0.40 C3 25.82 13.61 0.42 C3 Tongling 28.27 16.08 0.49 C3 30.32 15.06 0.36 C3