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| Study of Batch Annealing of Nb+Ti IF Cold Rolled Sheet Steel |
| ZUO Jun1，ZHANG Kaihua1，CHANG Jun1，YANG Jincheng2，WANG Pingli2 |
| 1. Research Institute of Panzhihua Iron and Steel， Panzhihua 617000, Sichuan， China； 2. Panzhihua New SteelVanadium Stock Co. , Ltd., Panzhihua 617067, Sichuan, China |
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Abstract Experimental results show that the recrystallization temperature decreases as the annealing time increases. As the heating rate has an effect on the mechanical properties of Nb+Ti IF steel, 50 ℃/h is considered proper.In the production, the annealing temperature should be kept as high as the annealing furnace allows in order to keep uniform temperature distribution even at the cold point of the coil. The annealing time should be long enough for complete recrystallization. Mechnical properties of the products produced in this way are excellent and stable.
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Received: 01 January 1900
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2008, Vol. 43 
