| 摘要 |
A method is disclosed of producing a union for panel radiators, the union comprising a spherical hollow body (22, Figure 5) having a pipe connection sleeve (23) which merges into the interior of the hollow body, which body is formed, perpendicularly to such sleeve, with a connection aperture 7 for the radiator. In the method, a round (10, Figure 3) of sheet metal is shaped by deep drawing into a dished member (20) which is subsequently upset so as to comprise a spherical hollow-body part (22) merging into a neck part (23). One side of the hollow-body part is formed with a facet 5 which will subsequently be operative for the engagement of a welding electrode for press welding. The neck part (23) is formed with an internal screwthread 6, and that side of the spherical hollow-body part which is opposite the facet 5 is drilled to provide the opening 7 for connection of the radiator. No separate parts have to be produced and fitted in this method. The method uses a very small amount of material so that angle unions can be produced cheaply in large batches. <IMAGE> |
