Russian steel maker Mechel Group’s Chelyabinsk Metallurgical Plant and the Uralskaya Kuznitsa plant have jointly mastered the production of steel ingots and forgings weighing 80 tonnes, required for the production of large tonnage rolls of ChMK rolling mills. The steel ingot was made in the electric steel-making shop at ChMK. The specialists of this workshop have extensive experience in working with multi-ton metal ingots: twice a month, they produce previously mastered 50 and 60-tonne ingots. For the production of an 80 tonne ingot, a special mold weighing 60 tonnes was made. It is heated to the required temperature, after which molten steel is poured by siphon casting, that is, from below. At the Uralkuz plant, in the process of preparing for the forging of an 80-ton ingot, they designed and manufactured automated tongs of increased carrying capacity. The reheating furnace was also modernized at the plant: to accommodate such an impressive ingot, its internal space was increased. After complete heating in the furnace, the ingot was forged using a hydraulic press. The force of such a press is 6.3 thousand tons of force per square meter. The total time of forging such an ingot takes 4 days, and the full cycle of forging production lasts almost a month: from forging and heat treatment to final machining.
Russian steel maker Mechel Group’s Chelyabinsk Metallurgical Plant and the Uralskaya Kuznitsa plant have jointly mastered the production of steel ingots and forgings weighing 80 tonnes, required for the production of large tonnage rolls of ChMK rolling mills. The steel ingot was made in the electric steel-making shop at ChMK. The specialists of this workshop have extensive experience in working with multi-ton metal ingots: twice a month, they produce previously mastered 50 and 60-tonne ingots. For the production of an 80 tonne ingot, a special mold weighing 60 tonnes was made. It is heated to the required temperature, after which molten steel is poured by siphon casting, that is, from below. At the Uralkuz plant, in the process of preparing for the forging of an 80-ton ingot, they designed and manufactured automated tongs of increased carrying capacity. The reheating furnace was also modernized at the plant: to accommodate such an impressive ingot, its internal space was increased. After complete heating in the furnace, the ingot was forged using a hydraulic press. The force of such a press is 6.3 thousand tons of force per square meter. The total time of forging such an ingot takes 4 days, and the full cycle of forging production lasts almost a month: from forging and heat treatment to final machining.
