摘要
30 4奥氏体不锈钢管材是 2 0 0MW以上火电机组近年来使用较多的受热面材料 ,由于该材料失效而引发的停机事故也时有发生 ,特别是在沿海地区具有一定的普遍性 .通过对某厂机组的失效分析 ,表明应力高低是造成失效的主要原因 ,并提出了预防对策 .
As a heated surface material, the 304 austenitic stainless steel tubings are frequently employed in recent years in thermal power units possessing a power higher than 200 MW. A failure of this material may lead to a shut-down of the power units, particularly those situated in the coastal areas. Based on a typical failure case, the failure mechanism of this material is analyzed, and the prevention measures proposed in this discussion.
关键词
奥氏体钢
应力腐蚀
失效分析
火电机组
锅炉
thermal power unit
austenitic stainless steel tubing
failure analysis
prevention measure
