摘要
氢是使大锻件出现白点从而导致报废的主要原因。本文分析氢的各种来源;简述200t电渣炉控制低氢的各种技术;对电渣重熔过程中氢的行为进行了探讨和分析。所开发的控制低氢的电渣重熔技术成功地控制了200t电渣炉的氢。已生产了300MW高—中压汽轮机转子、80×10~4t/a石油裂化加氢反应器、600MW核电模拟件等24个优质大锻件,钢水中的氢含量都低于2ppm,锻件中≤1ppm,全部无扩氢退火时间,均未发生白点。低氢控制技术创造的经济效益达数百万元。
Hydrogen is the key factor causing flakes in heavy forgings and resulting in rejection. This paper analyzes various sources of hydrogen and outlines techniques for controlling hydrogen in 200t ESR furnace. The hydrogen behavior during ESR is discussed and analysed. The developed technique for controlling [H] has been successful in 200t ESR furnace. Up to now, 24 high quality forgings, such as 300MW high/medium pressure turbine rotors, a set of 80×10~4 t/a hydrocracker for petrochemical plant and a simulator for 600MW nuclear power plant have been produced, in which all [H] content is below 2 ppm. Therefore no heat treating time is needed for [H] diffusion and no flake defects are found.
出处
《钢铁》
CAS
CSCD
北大核心
1991年第7期22-25,5,共5页
Iron and Steel
