Abstract
A new tool and technology for the forging of cast ingots without change in the shape and size of the blank are proposed. A hammer shape ensuring uniform working of continuous-cast billet by alternating deformation is considered. The selected hammer has two sections of the working surface: a flat section and a complex section. The complex section has projections and indentations in the form of segments of a cylindrical surface inclined at 90° to the axis of deformation. After reduction, as a result of the introduction of impressions of the hammers’ cylindrical projections, the height of the blank is reduced. The displaced metal fills the cylindrical indentations in the hammers, and the height of the blank at that point is increased. After displacement of the blank and its reduction by the flat section of the hammers, it resumes its initial shape, ensuring alternating deformation. In the development of the process, the relation between the deformation conditions and the dimensions of the blank and hammers is established on the basis of two conditions: complete filling of the hammer indentations in the first stage of deformation; and uniform strain distribution over the volume of the forging.
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