灰铸铁补焊技术的探讨

Discussion on the repair welding technology of grey cast iron

国电介绍空预器B减速机箱体（灰铸铁）运行中发现裂纹，采用的挖补修复技术。

Anshun electric power plant, phase I and II （4 ~ 300MW）, with a total installed capacity of 1200MW, have been put into production from 1998 to 2001. It is the first plant with a total installed capacity over 1000 MW in Guizhou. In recent years,we have solved many operating deficiencies of generator urfits. This paper presents the crack repair welding technology for B housing of reducer （grey east iron）of 2# boilers＇ air preheater to learning together with the exchange.