INFLUENCES OF EXPANSION RATIO, ROTARY FORGING EFFECTS AND REDUNDANT SHEAR DEFORMATIONS ON INSIDE BORE DEFECTS IN MATERIALS WITH POOR HOT WORKABILITY
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概要
- 論文の詳細を見る
In addition to the super piercer, "the new super piercer", which allows expansion piercing, has been developed by the authors. The development of the skewing technology for disc roll axes and its application to the cone-type piercing technology results in a remarkable increase in the expansion ratio. In this paper, studied in detail were the influences of the expansion ratio, feed and cross angles on the rotary forging effects, those on the redundant shear deformations and those on the inside bore defects in materials with poor hot workability. Furthermore, discussed in detail were the influences of the expansion ratio, rotary forging effects and redunddant shear deformations on the inside bore defects in materials with poor hot workability. As a result, it has been quantitatively clarified that the rotary forging effects are major causes of the initiation of inside bore defects, and that the redundant shear deformations are the major causes of the propagation of inside bore defects. Noteworthy is the influence of the expansion ratio. It should be noted that the larger the expansion ratio is, the more remarkably the inside bore defects decrease.
- 社団法人日本材料学会の論文
- 1997-09-15
著者
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Yamakawa Tomio
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
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Hayashi Chihiro
Corporate Research And Development Laboratories Sumitomo Metal Industries Ltd.
関連論文
- Influences of Expansion Ratio on Inside Bore and Lamination Defects in Expansion Piercing for Materials with Poor Hot Workability
- Influences of Feed and Cross Angle on Inside Bore and Lamination Defects in Rotary Piercing for Materials with Poor Hot Workability
- Influences of Piercing Ratio, Expansion Ratio, Feed, Cross and Skew Angles on Available Piercing Size Range in Rotary Piercing Process
- INFLUENCES OF EXPANSION RATIO, ROTARY FORGING EFFECTS AND REDUNDANT SHEAR DEFORMATIONS ON INSIDE BORE DEFECTS IN MATERIALS WITH POOR HOT WORKABILITY
- COMPARISON OF DOUBLE AND SINGLE PIERCING PROCESS IN SEAMLESS STEEL TUBE MANUFACTURE
- Influences of Feed and Cross Angle on Rotary Forging Effects and Redundant Shear Deformations in Rotary Piercing Process