Preparation method of fine-grain homogeneous and dense large metal slabs or plates

The invention relates to a preparation method of fine-grain homogeneous and dense large metal slabs or plates. The preparation method comprises the following steps of a, core veneer making; b, ingot mold design and making; c, mold core assembly; d, pouring cup mounting; e, casting compounding; f, ingot casting cooling; g, ingot casting heating; and h, ingot casting forging or rolling. Through theadoption of the preparation method, the fine-grain homogeneous and dense large metal slabs or plates can be obtained by die casting, and solid-liquid interface defects can be eliminated by forging orrolling ingot castings along a direction perpendicular to the thickness direction of a core veneer. The preparation method has the advantages of simple process, good inherent quality of the ingot castings, high comprehensive yield of the ingot castings and low production cost. 本发明涉及一种细晶均质致密大型金属板坯或板材的制备方法，包括如下步骤：a.芯板制作；b.锭模设计及制作；c.模芯组装；d.浇口杯安装；e.浇铸复合；f.铸锭冷却；g.铸锭加热；h.铸锭锻造或轧制。本发明能够通过模铸方式获得细晶均质致密的大型金属板坯或板材，通过将铸锭经垂直于芯板厚度方向的锻造或轧