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Abstract：
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Annealing process of cold rolled steel strip is a key step of integration optimization.The flexible annealing technology can produce the steel strip with multiple comprehensive mechanical properties which satisfies the demands of different consumers by optimizing the annealing process and controlling the cooling paths without changing the chemical composition of the strip and rolling process.In order to investigate the processing parameters for producing dual phase steel(DP steel) under the condition of galvanizing,the experiment of annealing of DP steel was carried out by using the continuous annealing simulation machine developed by State Key Laboratory of Rolling and Automation of Northeastern University.The microstructure of the samples were observed and analyzed by using optical microscope,SEM and TEM,and the mechanical properties of the samples were also tested.The results show that the cold rolled hot dip zinc coating DP780 steel strip can be produced by flexible annealing process,and the comprehensive mechanical properties of the steel is excellent and can satisfy the demand of this kind of product.
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Funds：
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国家重点基础研究计划资助项目(2006CB605208-1)
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AuthorIntro：
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Reference：
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