熱間絞り圧延における鋼管の変形に関する研究 : 第1報-1スタンドによる変形

概要

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In the reducing process of steel tubes by 1 stage of 4-roll pass, 1) the variation of rolling temperature from 700℃ to 1100℃ has almost no effect upon the elongation of the tube or the wall thickness. 2) the elongation becomes larger with U, which is the wall thickness/the outside diameter. 3) the elongation is proportional to the reduction of outside diameter. 4) the elongation is the largest in the case of 4-roll-oval-pass and the smallest in the case of 2-roll-oval-pass. 5) the change of wall thickness during the reducing process is different according to the reduction and position of the tube. 6) the appearance of ridges of outside surface is different according to the reducing temperature, the reduction rate and the wall thickness. The above results obtained were shown by experiments by the use of seamless low carbon steel tubes and one stage of 4-roll type reducing mill.
一般社団法人日本機械学会の論文
1952-11-25