05-01-2011 дата публикации
Номер: CN0101574726B
Принадлежит:
The invention discloses a method for integrally casting the platform and frame of a large laminator, which comprises the steps of: preparing an upper casting box and a lower casting box, arranging a reinforced tie bar in the upper casting box, placing facing sands, tamping and striking off back sands, pricking venting holes, pumping CO2 for hardening, setting the inclination between the lower casting box and the ground to be 8 degrees, putting the back sands at the bottom of the lower casting box, arranging straws and hard coke on the back sands, leading out through hole-born vent pipes whichare arranged horizontally, tamping into a hard sand bed by 40 to 70-mesh water glass quartz sands with the diameter ranging from 100 to 120mm, putting a casting polystyrene lost foam in the hard sandbed, fixing an ingate and a horizontal sprue of a dead head, arranging a sprue cup back closing mold on a straight sprue led from the horizontal sprue, maintaining 20s/ton of molten steel in the spruecup ...
Подробнее