基本信息:
- 专利标题： アルミニウム合金製ボルトおよびその製造方法
- 专利标题（英）：ALUMINUM ALLOY BOLT AND METHOD FOR MANUFACTURING SAME
- 申请号：PCT/JP2020/040926 申请日：2020-10-30
- 公开(公告)号：WO2021085627A1 公开(公告)日：2021-05-06
- 发明人： 下川 慎也 , 上野 誠 , 西村 興樹 , 森下 勇樹 , 府山 伸行
- 申请人： 松本重工業株式会社 , 広島県
- 申请人地址： 〒7371207 広島県呉市音戸町波多見１丁目３４番２８号 Hiroshima; 〒7308511 広島県広島市中区基町１０番５２号 Hiroshima
- 专利权人： 松本重工業株式会社,広島県
- 当前专利权人： 松本重工業株式会社,広島県
- 当前专利权人地址： 〒7371207 広島県呉市音戸町波多見１丁目３４番２８号 Hiroshima; 〒7308511 広島県広島市中区基町１０番５２号 Hiroshima
- 代理机构： 山尾 憲人
- 优先权： JP2019-199031 2019-10-31
- 主分类号： B21J5/08
- IPC分类号： B21J5/08 ; B21K1/46 ; F16B35/00 ; C22F1/00 ; C22F1/05 ; C22F1/053
An aluminum alloy bolt having a central axis C and comprising: a head portion; an underneck portion extending downward from the head portion; an underneck radiused portion formed between the head portion and the underneck portion, the underneck portion having a threaded portion. In the aluminum alloy bolt, a curvature region is defined which is enclosed by: a lower surface expanding inward and curving in the direction of the head portion from a surface of the underneck portion a certain distance L underneath an R-end on the surface of the aluminum alloy bolt which is the boundary between the underneck portion and the underneck radiused portion; an upper surface provided on the head portion side of the lower surface at a certain distance T from the lower surface; and the surface of the aluminum alloy bolt. An average crystal grain size of first crystal grains of the aluminum alloy of which the curvature region is composed is greater than an average crystal grain size of second crystal grains of the aluminum alloy of which the interior of the underneck portion inward of a threaded portion adjacent region adjacent to the threaded portion is composed.
IPC结构图谱:
| B | 作业；运输 |
| --B21 | 基本上无切削的金属机械加工；金属冲压 |
| ----B21J | 锻造；锤击；压制；铆接；锻造炉 |
| ------B21J5/00 | 锻压、锤击或压制的方法；其专用设备或附件 |
| --------B21J5/06 | .用于完成特殊的作业 |
| ----------B21J5/08 | ..镦粗 |