本邦鋼管圧延技術の進歩
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概要
- 論文の詳細を見る
In Japan, many tube manufacturing equipments have been improved and excellently progressed during last decade. Fourteen electric-resistance-weld tube mills have been installed and one continuous buttweld tube mill is under operation. But the operation of two Ehrhardt push-bench-type seamless-tube mills have been suspended. In tube-finishing plants, many new threading machines have been imported, and a new cold-drawing machine and a Rockrite rolling mill have been installed. Now many experiments are being made on the cold tube-drawing process with the back tension.
- 社団法人日本鉄鋼協会の論文
- 1955-07-01