Nb-containing microalloy building steel wire rod and production method thereof

• Main Authors: ZHANG YINGGANG, DENG TONGWU, LEI XIUHUA, LIU MING
• Format: Patent
• Language: Chinese; English
• Published: 20.03.2018
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention belongs to the field of ferrous metallurgy and particularly relates to a Nb-containing microalloy building steel wire rod and a production method thereof. Specific to the problems of lownitrogen content and less variety of the vanadium nitride alloy selected in existing preparation of nitrogen-containing alloy steel, the invention provides a Nb-containing microalloy building steel wire rod and a production method thereof. The steel wire rod comprises the components in percent by weight: 0.15-0.30% of C, 0.30-1.00% of Si, 0.60-1.30% of Mn, 0.0060-0.0180% of N, smaller than or equal to 0.040% of P, smaller than or equal to 0.040% of S, 0.010-0.050% of Nb and the balance of Fe and inevitable impurities. The key of the preparation method is to feed N-containing core-coated wireson a small platform behind a furnace to adjust the N to a proper level. The production method is simple to operate, high in N yield and stable, can effectively reduce the production cost and is worthy of popularization. 本发明属于