書誌事項
- タイトル別名
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- Void Consolidation during Open-Die Forging for Ultralarge Rotor Shafts. 3rd Report. Satisfaction of Criterion for Void Consolidation by Precooling Ingot Forging Method.
- チョウ オオガタジクザイ ノ タンゾウ ニ オケル ナイブ クウゲキ アッチャ
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抄録
A hydrostatic stress ratio of greater than 0.9 was proposed as one of the most significant criterion for void consolidation after closing during open die forging, on the basis of some physical modeling tests on 3.5NiCrMoV-rotor steel billet with a hole at the centerline and numerical simulation using the three-dimensional rigid-plastic finite-element method. To satisfy the criterion for void consolidation in a forging process of large rotor shafts, it was found that the use of a precooling ingot forging method for a rectangular cross-section-ingot is highly effective since the hydrostatic stress ratio at the center of the ingot remarkably increases with the increase of aspect ratio in the cross section from 1.0 to 1.8. The enlargement of width in the rectangular cross section enabled the development of the optimum maufacturing process of an ultralarge low-pressure turbine rotor shaft with 2800 mm and over diameter.
収録刊行物
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- 日本機械学会論文集Ｃ編
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日本機械学会論文集Ｃ編 62 (595), 1139-1146, 1996
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282681304435072
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- NII論文ID
- 130004231622
- 110002382564
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- NII書誌ID
- AN00187463
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- ISSN
- 18848354
- 03875024
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- NDL書誌ID
- 3936144
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可