近日,中国二重有史以来生产的最大铸件——大型模锻压机活动横梁中梁铸件合浇成功。由于此铸件所需钢水总量达758t,仅第一次合浇就达到609t,需多炉次冶炼、五包钢水合浇,而且需80t电炉和60t电炉连续冶炼提供钢水,由钢包精炼炉同时精炼。冶炼生产时间跨度长,补浇钢水量大,对设备是一种严峻的考验;同时,由于此铸件属厚壁铸 Recently, China’s second largest ever produced the largest casting - large forging press beam activities in the beam composite castings successful. Since the total amount of molten steel needed for this casting is up to 758t, only the first co-casting is 609t, more smelting is required and the five-clad steel is hydrated. The molten steel is continuously smelted by 80t electric furnace and 60t electric furnace, Refined. Smelting production time span is long, pouring molten steel is large, the equipment is a severe test; the same time, this cast is a thick wall cast