| 摘要 |
Moulds are used for continuously casting round or polygonal billet and preblock formats, wherein the mould cavity thereof is made of a copper pipe (3) which is intensively cooled by means of a water circulation cooling system. According to the invention, in order to increase both the cooling capacity and the dimensional stability of the mould cavity (4) and to increase the total service life of the copper pipe (3), the copper pipe (3) is provided with a protective casing (12) or protective plates which cover the entire periphery of the outer pipe casing (5). Cooling channels (6) which are used to guide the cooling water to the copper pipe (3) or to the protective casing (12) are provided in order to cool the copper pipe (3). The cooling channels (6) are distributed over the entire periphery on the outer pipe casing (5) and extend essentially over the entire length of the mould.
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