書誌事項
- タイトル別名
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- Dieless drawing process of extruded non-circular aluminum alloy tubes with double hollow section
- アルミニウム ゴウキン オシダシ イケイ チュウクウケイザイ ノ ダイレス ヒキヌキ
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Dieless drawing technique can thin down tubes by combining locally heating and tensile deformation of tubes without dies and tools. In this study, the dieless drawing process is applied to non-circular 1100 and 3003 aluminum alloy extruded tubes with double hollow section for heat exchangers. Fundamental deformation behavior of the tubes in the dieless drawing is investigated experimentally. Multi-pass dieless drawing is performed for the tubes to obtain larger reduction in area. The limiting reduction in area of A3003 tubes is 40% larger than 35% of A1100 in a singles pass drawing. Reduction in area 57.75% is obtained by two-pass dieless drawing for A3003 tubes. Geometrical similarity law in cross section is satisfied for the aluminum extruded tubes with double-hollow-section. In addition, surface characteristic and microstructure of the tubes after the dieless drawing is observed to investigate the effect of microscopic factors on the deformation behavior and the drawability in the dieless drawing. The results show that the surface roughness of the tubes increases with increasing reduction in area. Furthermore, the rate of increasing surface roughness depends on the grain size of initial tubes. It is found that the microstructure and the surface characteristic affect the deformation behavior and the drawability in the dieless drawing.
収録刊行物
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- 軽金属
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軽金属 57 (8), 351-356, 2007
一般社団法人 軽金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282681315382272
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- NII論文ID
- 10019520642
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- NII書誌ID
- AN00069773
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- ISSN
- 18808018
- 04515994
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- NDL書誌ID
- 8934288
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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
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可