TH11279A - Equipment and procedures for controlling and adjusting the speed in vessels for filling molds and the pressure in casting machines for rapid, low-pressure sample casting. - Google Patents

Abstract

The device for controlling and adjusting the filling rate and casting pressure of a low-pressure, rapid-cooling casting machine, whose hermetically sealed furnace chamber containing the casting material is connected to the rapid-cooling casting mold via a filling pipe leading to it, and through this filling pipe the casting material is forced into the mold by the pressure of the gas acting in the furnace chamber via a pressurized gas feed pipe. A contact rod (13) is provided at an adjustable height in the contact rod chamber (10), which extends from the top into the furnace chamber (7) and has its lower end (8) open as an inlet for the casting material. When contact is made by the contact rod, it provides a signal to a designated point (37) for controlling the pressurized gas feed flow into the furnace chamber (7). The contact rod can It can be moved when touched in the rod chamber (10) to a height which, during the casting process, will not be reached by the level of the casting material. In addition, a measuring section (36) is provided to measure the gas pressure in the furnace chamber (7), which will supply the measured pressure as a signal to the section (37) for controlling the pressurized gas feed flow.

Claims (1)

1. A device for controlling and adjusting the filling rate and casting pressure of a low-pressure, rapid-cooling casting machine in which its hermetically sealed furnace chamber, containing the casting material, is connected to the rapid-cooling casting mold via a fill pipe leading to it. Through this fill pipe, the casting material is forced into the mold by the pressure of the gases acting in the furnace chamber via a pressurized gas feed pipe. At least one contact rod is provided at an adjustable height in the contact rod chamber, which extends into the furnace chamber from above and has an open lower end for casting material entry. This contact rod provides a signal to a control device for the inflow of pressurized gases. When contact occurs with the casting material flowing up the contact rod, as a result of the gas pressure, the contact rod (13) can be adjusted in the contact rod chamber (10) to a height that will not... The pressure gauge (3) is set up for measuring the gas pressure in the furnace chamber (7), which provides the measured pressure as a signal to the prepared section (37) for controlling the inflow of the pressurized gas.