Abstract: A cooling plate made up of three sections with expansion gaskets set at the boundaries thereof is produced by separate casting of molten metal into a foundry mold. Prior to pouring molten metal into the mold, partitions with the expansion gaskets are set in the mold to form molding cavities required to produce three sections, namely: an intermediate section and sections with protruded portions of the cooling pipes. The intermediate section may be likewise divided into several portions.

Abstract: The cooling arrangement comprises spaced apart cooling tubes arranged in a frame and interconnected with metallic tie plates. For decreasing thermal stresses without loss of strength throughout the structure, each tie plate is tangentially welded with its edge portions to the adjacent cooling tubes on both the shell and the furnace sides thereof. Each tie plate may be tangentially welded to one adjacent cooling tube and to the other it may be welded on the portion of its surface defined by an arc between tangents to this arc from the location where the tie plate is tangentially welded. The cooling tubes and the tie plates may be provided with fins and, the tie plates and the fins and as well as the walls of the frame have expansion clearances or slots. The frame is filled with a refractory material serving to protect the whole cooling arrangement.

Abstract: The tubular cooled members have straight pipes, each accommodating an insert aligned axially therewith and having a cross-section diminishing in the direction of the coolant flow in the pipe interior. These straight pipes are coupled in pairs by a bent connecting pipe fitted with an insert abutting against those enclosed in said straight pipes. The abutted pipes have the same diameters but the junctions between said pipes are displaced relative to those between the inserts, the inserts also having the same diameters at the abutted sections.