Abstract: In the case of a continuous casting mould for a double T-shaped preliminary section comprising a mould cavity cross-section which is composed of two flange parts (4, 4') and a web part (5) firstly sticking of the billet in the mould is to be prevented and secondly simplified mould production is to be indicated. Furthermore it should be possible to produce sections of this type in tubular moulds, with high casting speed and high billet quality such that their dimensions are as close as possible to the final dimensions. To this end it is proposed that the mould cavity (3) be provided at the mould end on the pouring-in side, on both sides along the web (5) in each case with a cross-sectional enlargement, in the form of bulges (8), with respect to the identical mould cavity portion (7) at the mould end on the billet outlet side.

Abstract: Molten steel is continuously teemed into a casting passage to establish a bath of molten steel in the passage. The molten steel is partially solidified in the casting passage to form a strand having a plurality of bulges which are uniformly distributed circumferentially of the strand. The strand is continuously withdrawn from the casting passage and the bulges are deformed during strand withdrawal so as to reduce bulge size. The amount of deformation is regulated by varying the bath level as a function of one or more casting parameters.

Abstract: The mold includes a mold tube having pairs of parallel opposed outer surface portions which extend axially of the mold tube. The mold tube defines an axial casting passage having an inlet end for molten metal and an outlet end for a continuously cast strand of the metal. The mold tube is provided with internal concavities which are uniformly distributed peripherally of the casting passage. The internal concavities, which extend in a direction from the inlet end towards the outlet end, become smaller in this direction and are designed so that the strand is shaped as it travels along the casting passage. To form the mold tube, external concavities are impressed or cut in a tubular blank and a mandrel with external protuberances is then pressed into the blank. If necessary, the tubular blank can thereafter be drawn or otherwise processed to produce the desired outer contour of the mold tube.

Abstract: A mold for the continuous casting of steel defines a casting passage having an inlet end for molten steel, an outlet end for a continuously cast steel strand, an upstream portion extending from the inlet end approximately halfway towards the outlet end, and a downstream portion extending from the upstream portion to the outlet end. The upstream portion is formed with a plurality of radially outwardly directed protuberances which are arranged side-by-side circumferentially of the casting passage. The size of the protuberances decreases from the inlet end towards the outlet end in such a manner that the strand is shaped during travel through the upstream portion of the casting passage.