| 摘要 |
A method for producing superheater tubes and connecting pipes and assembling superheater tubes inside a steam generator tube wall includes preparing tubes composed of precipitation-hardened nickel-based alloys in a solution-annealed state for the straight tubes, the bends, and the connecting pipes in a workshop and preparing sleeves composed of a material that is not to be heat treated in a shop. The bends and the connecting pipes are manufactured in the workshop using bending tools and then the straight tubes, the bends and the connecting pipes are precipitation hardened in the workshop in a first heating device. The superheater tubes are manufactured in the workshop by connecting the straight tubes and the bends with weld seams, and connecting the sleeves with the connecting pipes with weld seams. The weld seams between straight pipes and bends as well as the weld seams between sleeves and connecting pipes are precipitation hardened in the workshop with a second heating devices. The superheater tubes are connected with the connecting pipes on the assembly site inside the steam generator tube walls with a weld seam and the sleeves are connected with the take-up device with a weld seam. The weld seams are precipitation hardened on the assembly site with third heating devices located proximate to the weld seams.
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