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| EFFECT OF MnS AND SLAB REHEATING TEMPERATURE ON PROPERTIES OF ORIENTED-GRAIN Fe-3%Si |
| by He Zhongzhi; Liu Zhifu; Zhang Baicheng and Zhang Wenrun(Central Iron and Steel Research Institute; Ministry of Metallurgical Industry) |
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Cite this article:
by He Zhongzhi; Liu Zhifu; Zhang Baicheng and Zhang Wenrun(Central Iron and Steel Research Institute; Ministry of Metallurgical Industry). EFFECT OF MnS AND SLAB REHEATING TEMPERATURE ON PROPERTIES OF ORIENTED-GRAIN Fe-3%Si. Acta Metall Sin, 1981, 17(4): 433-497.
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Abstract The Suitable contents of such effective constituents determined on the basis of the MnS process may be available to produce the oriented-grain Fe-3%Si as:C 0.03-0.05%, Mn 0.06-0.08%, S 0.018-0.025%, [Mn] [S]=(11-20)×10~(-4) and O_2 0.007%. The magnetic properties of Fe-3%Si have also been influenced by the slab reheating temperature. It was observed that with the raise of the reheating temperature, the primary grain size reduced and the secondary coarsened, thus,its magnetic properties may be remarkably improved, B_(10)>1.78Wb/m~2, and stabilized.The proper reheating temperature is elevated as the increase of product [Mn] [S].However, the reheating temperature became relatively insensitive to the magnetic properties when an appropriate amount of Al and N_2 was added. The secondary grains may coarsen and value B_(10) may improve further. The starting temperature of the secondary recrystallization seems to be in correspondance with that at the beginning of rapid growth of primary grains and of the aggregation of MnS particles.
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Received: 18 April 1981
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