FIELD: foundry; production of wide wall of mould for gear for continuous casting of metal. SUBSTANCE: central convex part passing from upper edge to sides and downwards is made in copper wall with thickness 5-50 mm by plastic change of form by stretching stresses or by stretching and compressing stresses. Recesses have any forms and sizes saving expenses and energy. EFFECT: higher efficiency. 7 cl, 7 dwg
