| 摘要 |
PURPOSE:To accurately measure gas pressure in a cavity at the time of actual casting by fitting a sensor measuring the gas pressure near a chill bent insert die or a valve in a gas exhaust passage connecting with the cavity in a die for die casting. CONSTITUTION:The cavity 3 is shaped by joining the dies 1, 2 fixed to die fitting parts 4, 5 in the die casting machine. On the other hand, molten metal is supplied from a molten supplying hole 7 in a sleeve 6 fitted to the fitting part 5 and pressed in the cavity 3 by a piston and plunger 11, to execute casting. In the above die casting, the chill bent insert dies 15, 16 having corrugating plate-shape part 15a, 16a, fitted to the dies 1, 2 are connected with the cavity 3 and the sensor 13 detecting the gas pressure is fitted. The molten metal, which is cast from the chill bent insert dies 15, 16, is solidified and cut off to fill up in the cavity 3. In this way, only gas is pushed out and the pressure is measured by the sensor 13 and outputted to an output meter 14 and if necessary, the buzzer 17 is worked.
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