CAST IRON LADLE Russian patent published in 1994 - IPC

FIELD: metallurgy. SUBSTANCE: ladle cover is of two-tier construction, the lower tier consisting of two segments arranged on neck symmetrically with its center, forming a cast iron pour-out hole and secured on neck by fastening members. Segments have L-shaped guides secured on upper surface of segments along longitudinal side of hole, and hole length regulators secured at pour lips along the longitudinal sides of the hole. Width of hole is equal to 20-65% of its length corresponding to distance between outer edges of pour lips. Upper tier has the form of rectangular plate whose length and width are equal, respectively, to 75-100% and 105-115% of the length and width of the hole in the lower tier of cover. Plate has end limiters and slides and is capable of moving over guides of the lower tier. End limiters are articulated on plate corners and can interact with hole length regulators. Slides have an inverted L-shaped profile and are secured on lower surface of plate along its longitudinal sides. Cover segments of lower tier may be lined while plate of upper tier ma be of a hollow box-shaped type from heat-resistant steel. To support upper tier of cover, the ladle is provided with revolving cantilever beams articulated on neck at the side of pour lips while beams are provided with latches. EFFECT: improved design. 3 cl, 3 dwg