Investigation on the anisotropy of 2S sheet
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概要
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To produce the sheet which flows uniformly in all direction in deep drowing process, the effect of the manufacturing conditions of 2S sheets upon the anisotropy, i.e. earing phenomena on deep drawn cup was investigated.The results obtained are summarized as follows;(1) Ratio of Fe/Si gives the effect on the anisotropy as revealed by the height of ears in drawing cups. The more the Fe content the greater 45°-ears is in the sheets, and with the decrease in the ratio of Fe/Si the anisotropy becomes small.(2) A feather structure of slab ingot also emphasizes 45°-ears(3) The higher temperature and longer time in preheating of slab ingots, make the 40°-ears remarkable.(4) When 2S sheet is given the intermediate annealing, C-90°-ears are appear. It is usually necessary for producing a earless sheet that 80-90% cold reduction is given before final annealing.(5) The ears of 2S sheet straight rolled without intermediate annealing, could not be controlled easily by the final annealing only, therefore, it is necessary to maintain carefull control of ratio of Fe/Si, hot-rolling conditions, cold reduction or coll rolling schedules and others.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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