| 摘要 |
<p>When casting e.g. aluminium alloy in a mould (2), that may be one of a string of moulds extending at right angles to the plane of the drawing, the pressure used for filling the mould (2) against gravity by means of a pressurizing device (4) is controlled according to a predetermined pressure/time programme having previously been read into a control unit (22), e.g. a digital computer, at least one of a number of sensors sensing pressure (8), levels (9, 10) and full level (11) being used to supply inputs to the control unit (22). Sensors are chosen according to need for each particular casting programme.</p> |
