24小时热门版块排行榜    

北京石油化工学院2026年研究生招生接收调剂公告
查看: 291  |  回复: 0

txljy

新虫 (初入文坛)

[求助] 帮翻译

3.2.  Shapes of the mandrel and workpiece

In a conventional spinning process, the final shape of the product is almost identical to that of the mandrel used. In this study, a man-drel having the shape of a truncated elliptical cone is used in the first trial experiment on asymmetric spinning so that the experimental results can be easily compared with those obtained in axisymmetric cone spinning. The shape and dimensions of the asymmetric man-drel (truncated elliptical cone), axisymmetric mandrel (truncated cone), and roller are shown in Fig. 3. The half-cone angle of the man-drel, ˇ, is set to 60◦ and one-path spinning was successfully carried out. The roller is equipped with a ball bearing at its center to reduce friction generated during its rotation in the spinning process.

Cold-rolled commercially available pure aluminum sheets (composition: Si 0.11 wt%, Fe 0.51 wt%, Cu 0.12 wt%, and Ti 0.03 wt%) with a thickness of 1 mm were used in this study. The shapes of the metal sheets (workpieces) used for asymmetric and axisymmetric spinning are shown in Fig. 4. The long axis of the elliptical workpiece was aligned parallel to the rolling direction. Prior to their use in the spinning experiments, the workpieces were annealed at 673 K for 1 h for elimination of residual stress. The mechanical properties of the materials obtained by carrying out uniaxial tensile tests on three specimens, whose axis are aligned at 0◦ , 45◦ , and 90◦ to the rolling direction are summarized in Table 2.

» 猜你喜欢

已阅   关注TA 给TA发消息 送TA红花 TA的回帖
相关版块跳转 我要订阅楼主 txljy 的主题更新
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 第一志愿东南大学物理313,有科研竞赛获奖经历,希望物理复试调剂 +3 马内橙 2026-04-05 3/150 2026-04-06 10:32 by 蓝云思雨
[考研] 332求调剂 +17 小小孟... 2026-04-05 18/900 2026-04-06 09:51 by 蓝云思雨
[考研] 一志愿南昌大学,085600,344分求调剂 +9 调剂上岸玘 2026-04-05 10/500 2026-04-06 09:30 by dongzh2009
[考研] 生物与医药调剂 +4 十七sa 2026-04-05 4/200 2026-04-05 20:05 by lys0704
[考研] 322求调剂 +3 嗯哼哼恒 2026-04-05 3/150 2026-04-05 19:52 by nepu_uu
[考研] 301求调剂 +3 XYPLR 2026-04-05 4/200 2026-04-05 19:07 by XYPLR
[考研] 一志愿上海海洋大学083200食品学硕,求调剂,接受其他专业083200 +4 what张 2026-04-04 5/250 2026-04-05 14:07 by chw1980_0
[考研] 270求调剂 +9 小杰pp 2026-03-31 11/550 2026-04-05 11:02 by 风雨无晴
[考研] 材料与化工363求推荐 +7 zh096 2026-04-04 7/350 2026-04-05 09:11 by 陌秋26
[考研] 323分(计算机视觉和大模型项目)能直接上手 +3 chaoxiicy 2026-04-01 3/150 2026-04-05 00:50 by chongya
[考研] 材料调剂 +15 一样YWY 2026-04-01 15/750 2026-04-04 22:23 by hemengdong
[考研] 302求调剂一志愿华中师范大学 +8 小江小江江江 2026-04-02 8/400 2026-04-04 19:50 by 蓝云思雨
[考研] 309求调剂 +4 快乐的小白鸽 2026-04-04 5/250 2026-04-04 15:55 by cql1109
[考研] 325求调剂 +4 春风不借意 2026-04-04 4/200 2026-04-04 14:46 by 湘农储能材料
[考研] 26调剂 086003 +6 失活的细胞 2026-04-04 6/300 2026-04-04 09:50 by zhangdingwa
[考研] 281求调剂 +10 aaawhy 2026-04-03 10/500 2026-04-03 21:42 by lbsjt
[考研] 土木水利328分求调剂 +6 疾风知劲草666 2026-04-02 6/300 2026-04-03 11:38 by znian
[考研] 260求调剂 +3 朱芷琳 2026-04-02 3/150 2026-04-03 08:44 by yulian1987
[考研] 279求调剂 +6 学而思兮知 2026-04-01 6/300 2026-04-02 09:16 by vgtyfty
[考研] 335求调剂 +3 321* 2026-03-31 4/200 2026-04-01 00:00 by 321*
信息提示
请填处理意见