论文部分内容阅读
30万吨/年合成氨工程中,转化炉是关键设备之一。它由上猪尾管、炉管、下猪尾管和分集气管等组成。在制造下猪尾管和分集气管时,上海化工机修总厂采用了 Cr 20 Ni 32(Incoloy 800)耐热合金。该合金在高温下具有较高的强度、塑性和良好的抗氧化性能。Incoloy 800合金的焊接,国外用手工焊时,大都采用 Inconel182和 Inco-WeldA等镍基焊条。用这种焊条焊接 Incoloy 800合金,焊缝金属的蠕变强度仅为母材的70～75%,
300,000 tons / year ammonia project, the converter is one of the key equipment. It is pig tail pipe, furnace tube, pig tail pipe and sub-manifold and other components. In the manufacture of pigtail pipes and manifolds, the Shanghai Chemical Machinery Factory adopted a Cr 20 Ni 32 (Incoloy 800) heat-resistant alloy. The alloy has high strength, plasticity and good oxidation resistance under high temperature. Incoloy 800 alloy welding, hand welding abroad, mostly with Inconel182 and Inco-WeldA nickel-based welding rod. Incoloy 800 alloy welding with this electrode, the weld metal creep strength of only 70 to 75% of the base metal,