核反应堆堆芯用HEA304电渣锭的试制

Trial-production of HEA304 Electroslag Ingot for Nuclear Reactor Core

HEA304为低碳奥氏体不锈钢,具有优良的高温性能、抗腐蚀性及抗辐射性,主要用于核反应堆堆芯材料,该钢种电渣重熔后易出现碳、氮、晶粒度超标,经过对电渣重熔渣系及电渣工艺的摸索试验,确定电渣重熔渣系及工艺要点,并经锻造、热处理工艺处理,可以生产出优质的核材用HEA304锻件,满足标准要求。

HEA304 is a kind of low carbon austenitic stainless steel with good high temperature performance and corrosion resistance, and radiation resistance which is mainly used for nuclear reactor core material. It is easy to exist problems of carbon, nitrogen, grain size failed to meet the requirements of standard after the electroslag remelting. Through studying the slag system and remelting process, the electroslag remelting slag system and key technology points are determined, and then followed by forging, heat treating, high quality HEA304 forgings for nuclear materials can be produced which meet the requirements of the standard.