列车电站锅炉安全门门芯、门座、原设计材料为2Cr13不锈钢,经淬火后使用。其运行工况为汽溫450℃,汽压41Kg/Cm~2。由于在此温度下2Cr13本身硬度已经有明显下降,在安全门动作一定次数以后,结合面常常由于汽流冲刷及腐蚀等原因造成泄漏现象,给安全运行带来一定威胁,甚至被迫停炉检修。为了提高电站安全门的耐磨及耐蚀性能,延长其使用寿命,74年以来,我厂在武汉材 Train power station boiler safety door core, door, the original design of 2Cr13 stainless steel, after quenching. The operating conditions for the steam temperature 450 ℃, steam pressure 41Kg / Cm ~ 2. Since the hardness of 2Cr13 itself has obviously decreased at this temperature, after the safety gate moves for a certain number of times, the joint surface often leaks due to steam scour and corrosion and other reasons, posing a threat to safe operation and even being forced to shut down for overhaul. In order to improve the power plant safety door wear and corrosion resistance, to extend its service life, 74 years, I plant in Wuhan