塑性と加工
Online ISSN : 1882-0166
Print ISSN : 0038-1586
論文
市販マグネシウム合金板の冷間成形における
高温焼なましの有効性の調査と
底部ビードを有する角筒容器の成形
安部 洋平籔下 雄基森 謙一郎
著者情報
ジャーナル フリー

52 巻 (2011) 609 号 p. 1109-1113

詳細
PDFをダウンロード (1311K) 発行機関連絡先
抄録

The effectiveness of high temperature annealing on the cold formability of commercial AZ31 and AZ61 magnesium alloy sheets was investigated. The elongation, n-value and r-value for the improvement in formability were increased by the high temperature annealing for both sheets. The minimum radius ratio in the V-shaped bending of the annealed sheets at 500 °C was improved to 2 from 3 and 4 for the as-received AZ31 and AZ61 sheets, respectively. Although the limiting drawing ratios for circular and square cups of the annealed AZ31 sheet were 1.61 and 1.45, respectively, the high temperature annealing for the AZ61 sheet was insufficient, particularly for the square cups. In addition, a square cup having a bead at the bottom was formed by two-stage cold stamping. In the 1st stage, a cup having a large corner radius was formed by deep drawing using a punch having a large corner radius to prevent the occurrence of fracture. In the 2nd stage, a bead at the bottom of the cup was formed by a rubber punch and grooved die. An AZ31 square cup having a bottom bead was successfully formed.

著者関連情報
© 2011 一般社団法人 日本塑性加工学会
前の記事 次の記事

閲覧履歴
feedback
Top