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12A1MoV钢(简称上104钢)是为立足国内资源,提高炼油设备抗高温硫腐蚀能力,于60年代研制成的钢种。1986年我厂在更换双动滑阀时曾更换了一段上104钢制烟道。开工后由于衬里损坏而超温,夜间可见其表面达到发红的程度,局部壁温在500℃以上。已使用9年的烟道,能否经受住这样高的温度,其高温强度、持久强度如何,是现场人员必须密切注意的问题。1986年我们将换下的筒体进行了取样分析,现将其有关情况作一扼要介绍。
12A1MoV steel (referred to as 104 steel) is based on domestic resources, improve the ability of high temperature sulfur oil refining equipment corrosion, developed in the 1960s steel. In 1986, the factory changed a section of 104-steel flue when it replaced the double-acting slide valve. After the start of the lining due to over-temperature damage, the surface can be seen at night to achieve the degree of redness, the local wall temperature above 500 ℃. Has been used for 9 years of flue, can withstand such a high temperature, its high temperature strength, long-lasting strength of how, on-site personnel must pay close attention to the problem. In 1986 we will replace the cylinder sampling analysis, the relevant circumstances are briefly introduced.