METHODS OF CLOSING THE INLET IN A MOULD AFTER NON-GRAVITY CASTING WITH A NON-FERROUS ALLOY OF GREEN-SAND MOULDS IN A MOULD-STRING PLANT

摘要

In a kind of closing entrance (8) model, cylindrical elements (14) have in connected pathways (15), that is a part of retaine die assembly protrudes from the outside of mold (14), therefore, in the mold of a part of runner (8), the surface and element (14) of the internal terminal are located at opposite plane surface (16) runner (8) in channel (15). In casting process, the casting device of nozzle (13) is brought into tight fit and resists outer element, is cast in mold with molten metal alloy through nozzle (13), the mold (figure one) of the channel unit (14) of (15) and runner (8). In casting mould, nozzle (13), which is pressed into element (14), has the abutment force for being noticeably greater than it in casting process, to make element and entering in mold for axial displacement form tight fit abutment surfaces (16), in the runner (8) and block the latter, it is extracted nozzle (13), without the casting metal outflow (figure) from mold. Other closing entrances of three kinds of methods are described.