| 摘要 |
The invention relates to a method for producing a housing central part (1) of a high-pressure slide gate valve composed of high-temperature-resistant steel, in which method two die-forged housing central part half-shells (1a, 1b) with integrally forged connectors (4a, 4b) are welded to one another, by an electron beam welding process without welding filler, by way of a butt-jointed weld seam (2) running in a plane (3) which runs transversely with respect to the pipe connectors (4a, 4b) and which divides the housing central part (1). In order, in the case of a housing central part of said type, to increase durability with low production costs and to reduce weight, the invention proposes that the wall thicknesses of the housing central part half-shells (1a, 1b) be designed, overall, on the basis of a weld seam factor (WSF = 1), and that, after the production of the weld seam (2), the entire housing central part (1) be subjected to rigourous heat treatment with heating to above the conversion temperature, quenching and annealing. |
