| 摘要 |
PCT No. PCT/CH80/00008 Sec. 371 Date Oct. 2, 1980 Sec. 102(e) Date Oct. 1, 1980 PCT Filed Jan. 24, 1980 PCT Pub. No. WO80/01544 PCT Pub. Date Aug. 7, 1980.A process for compacting moulding sand to form a casting mould comprises the steps of filling a moulding space located between a pattern plate and a pressure plate with moulding sand, pre-compacting the moulding sand, after the moulding space is filled with moulding sand and closed by the pressure plate, by an explosive-type shock pressure, and subsequently re-compacting the moulding sand by mechanically pressing the moulding sand between the pattern plate and the pressure plate. |
