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炼制高含硫原油时,在高温重油部位因硫化氢的腐蚀而引起的破坏不仅会造成重大的经济损失,而且是生产运行中的一个极不安全的因素。国内外往往采用Cr13型复合板或衬里技术来满足工况条件的要求,但价格昂贵,工艺复杂。为开发符合国情的抗高温硫腐蚀新材料,我厂与上钢三厂等单位协作,经过十多年的努力,研制成功12A1MoVR钢,并于一九七五年首次在我厂制作大型减压塔体(φ6400),并取得良好使用效果。在研制工作中,通过提高母材形成奥氏体的能力,稳定了钢材的韧性,并对该钢焊接接头熔合线处铁素体带进行了长期的多方面的探索,采取降硅增锰的措施,抑制了焊接接头熔合线母材侧铁素体带的产生,从而
When refining high-sulfur crude oil, the destruction caused by the corrosion of hydrogen sulfide at the high-temperature heavy oil part not only causes significant economic losses, but also is a very unsafe factor in the production operation. Domestic and foreign often use Cr13 composite board or lining technology to meet the requirements of working conditions, but expensive, complex process. In order to develop new materials that meet the national conditions of high temperature sulfur corrosion, our factory cooperated with Shangshang No. 3 Plant and other units. After more than 10 years of hard work, we successfully developed 12A1MoVR steel and made a large decompression in our factory for the first time in 1975 Tower body (φ6400), and achieved good results. In the research and development work, the toughness of the steel was stabilized by increasing the ability of austenite to form the base metal. The ferrite tape at the fusion line of the steel welded joint was explored for a long time. Measures to suppress the occurrence of the ferrite tape on the base metal side of the welded joint of the welded joint