Smelting process for steel ingot of main pipe line of primary loop in AP1000 nuclear power technology

The invention provides a smelting process for a steel ingot of a main pipe line of a primary loop in AP1000 nuclear power technology, which comprises the following steps: 1) producing a consumable electrode by using an electric arc furnace and an AOD furnace, and adding 0.05 to 0.10 percent of niobi...

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Bibliographic Details
Main Authors LU HUAXING, ZHANG XIANG, MEI HONGSHENG, LIU ZHONGLI
Format Patent
LanguageChinese
English
Published 16.02.2011
Subjects
ALLOYS
CASTING
CASTING OF METALS
CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
PERFORMING OPERATIONS
POWDER METALLURGY
TRANSPORTING
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:The invention provides a smelting process for a steel ingot of a main pipe line of a primary loop in AP1000 nuclear power technology, which comprises the following steps: 1) producing a consumable electrode by using an electric arc furnace and an AOD furnace, and adding 0.05 to 0.10 percent of niobium and 0.01 to 0.03 percent of zirconium during smelting; and 2) producing the steel ingot by usingan electroslag remelting method: adopting 316LN Benxi steel as an underlayer, adopting the Benxi steel to start an arc, and adopting TiC as an arc striking agent. The mechanical property and the grain size of the steel ingot after smithing are ensured without generating a crackle during smithing by using a rational and effective smelting method.
Bibliography:Application Number: CN20091210445