| 摘要 |
In the case of a continuous casting mould for a I- shaped preliminary section comprising a mould cavity cross- section which is composed of two flange parts (4, 4') and a web part (5) firstly stacking of the billet in the mould is to be prevented and secondly simplified mould production is to be indicated. Furthermore it should beg 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. A curve height (H) of the web bulge (8) should decrease between the end on the pouring-in side and the end on the billet outlet side in such a way that a geometric extension of an associated chord (9), which extension results from this decrease, completely or partially compensates the amount of shrinkage of the billet shell transversely to the longitudinal axis of the billet.
|
