| 摘要 |
FIELD: ferrous metallurgy, in particular, production of cast iron. ^ SUBSTANCE: method involves destructing tapping hole device mass by providing joint rotating and impact motion of working tool; determining natural vibration frequency of tapping hole device mass and providing impact motions of working tool at frequency ranging between half to doubled natural frequency of tapping hole device mass. ^ EFFECT: reduced time and consumption of power for opening of tapping hole. |
