To provide a chill vent in which the sectional area of a gas vent path can be easily changed, the gas venting from a die cavity can be adjusted to an always optimum state, and occurrence of a defect, such as a blow hole, due to a gas venting defect can be prevented while the occurrence of a hot metal blow is prevented.
The chill vent provided with the gas vent path communicating with the cavity of the die is provided with a cross section adjusting means for changing the sectional area of the gas vent path, a sliding piece 5 projecting and retracting within, for example, the gas vent path, a coil spring energizing the sliding piece 5 in a projection direction, and an adjustment screw 7 adjusting the position of the sliding piece 5. The gas venting property of the chill vent is regulated by adjusting the amount of the projection of the sliding piece 5 into the gas vent path, thereby adjusting the sectional area for venting.
KABASAWA HITOSHI
TAKAHASHI YOSHITAKA
| JP2005186121A | 2005-07-14 | |||
| JPH02127353A | 1990-05-16 | |||
| JPH10249508A | 1998-09-22 | |||
| JP2002238697A | 2002-08-27 | |||
| JP2001341293A | 2001-12-11 |
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