| 摘要 |
Form tool for manufacturing casting moulds from moulding sand, process for its manufacture, and its advantageous use. A form tool for manufacturing sand moulds by chemical hardening of the moulding sand by means of reaction gases has a wall with a novel open-pore, heteroporous structure. The wall has a narrow, fine-pore region (3) which comes in contact with the moulding sand and which is in direct contact with a large-pore supporting skeleton (4). |
