| 摘要 |
The mould (6) for casting shaped bodies is filled with green sand which is initially compressed by a hydraulic press (1). It is then given a final compression. Also claimed is a hydraulic press system where the shaping tool(s) with shaping recesses have channel drillings leading to the recesses. The green sand is sucked into the recesses of the shaping tool. For the initial compression of the green sand, the lower tool (7) with a raised tool surface is lifted against the upper tool (8) with the recesses, or vice versa. For the final compression, both tools are brought together simultaneously. The blank is ejected with compressed air assistance. USE/ADVANTAGE - The method is for the preparation of moulds, with sand, for a shaping tool to be inserted to give the moulding shape for casting. The system gives a simple operation to structure a complicated casting shape in green sand, with a fault-free and effective action.
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