Grain refining of flange plate for welded H section steel made under asynchronous rolling condition |
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| Authors: | Hui Dai Jiquan Sun Di Tang |
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| Affiliation: | DAI Hui 1,2,SUN Jiquan1,TANG Di 1 (1. Research Institute of Metallurgical Engineering,University of Science & Technology Beijing,Beijing 100083,China,2. Tangshan Iron & Steel Design & Research Institute Co.,Ltd.,Hebei Iron & Steel Group,Tangshan 063000,China) |
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| Abstract: | Asynchronous rolling technology was adopted for the accumulated ten passes cold rolling, flange plate steel, and for welded
H section steel, respectively. The metallographic microstructure analysis, tensile test and annealing test were carried out
for cold rolled pieces; thus the ratio of length to width of grain, tensile strength, relationship between the grain size
and asynchronous rolling process parameters after annealing can be obtained. The experimental results show that the relationship
between the asynchronous rolling and the shearing deformation of rolled pieces can make a reasonable interpretation of the
mechanism that asynchronous rolling may improve the strain accumulated energy of rolled pieces and the strength of flange
plate steel. This paper provides a theoretical basis for the application of asynchronous rolling in improving the strength
of flange plate steel. |
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| Keywords: | asynchronous rolling additional shear strain grain refinement |
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