The invention discloses a method for producing a
cupronickel alloy round
ingot. The general formula of produced
cupronickel alloy is CuaNibFecMnd, wherein by
mass percent, b is larger than or equal to4% and smaller than or equal to 31.5%, c is larger than or equal to 0% and smaller than or equal to 1.8%, d is larger than or equal to 0% and smaller than or equal to 1.2%, the balance is a, and thesum of impurities in the
alloy is not larger than 0.5%. According to the method,
solid metal is melted through an
intermediate frequency furnace, a refining agent is added for refining, refined
liquidmetal with qualified ingredients passes through a transferring runner and a
graphite crucible and directly enters a crystallizer, and a round
ingot producing process is simplified; and
ingot castingquality control influence factors are reduced, and consumption of a
graphite part in the
cupronickel alloy round ingot production process is reduced. According to the method, a desoxidant is added atdifferent times to deoxidize the
liquid metal, air sucked in the process that the
liquid metal passes through the runner and is directly transferred is eliminated, the quality of the
liquid metal is stabilized, and the quality of a round ingot
crystal structure is improved.