Title:
スポンジチタン粒の集合体、これを素材とするプラズマアーク溶解用または真空アーク溶解用の棒状消耗式電極および電子ビーム溶解用の塊状ブリケット、ならびにスポンジチタン粒の選別方法および選別装置
Document Type and Number:
Japanese Patent JP6780403
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an aggregate of sponge titanium grains crushed and size-adjusted to a prescribed size, excellent in hanging resistance and moldability in cold rolling.SOLUTION: Provided is an aggregate of sponge titanium grains in which a convex ratio being a ratio (Ap/Ach) between the projection area Ap obtained by projecting sponge titanium grains crushed and size-adjusted to a size of about 5 to 19 mm and mounted on a horizontally arranged flat board from the upper part along the normal of the flat board and the area Ach of a convex closure calculated from the projected shape is 0.84 or more, and also, the circularity of Wadell as a ratio (Lr/Lp) between the length Lp of the peripheral part of a projection figure calculated from the shape projected onto the flat board and the length Lr of the circumference of a circle having an area equal to the projection area Ap is 0.55 or more.SELECTED DRAWING: Figure 4
Inventors:
Mitsuo Ishii
Application Number:
JP2016183439A
Publication Date:
November 04, 2020
Filing Date:
September 20, 2016
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
C22B34/12; C22B9/04; C22B9/20; C22B9/22; H05B7/18
Domestic Patent References:
| JP2004195464A | ||||
| JP2012087373A | ||||
| JP2010116589A | ||||
| JP2010116581A | ||||
| JP2007332399A | ||||
| JP11158565A | ||||
| JP2008274406A |
Foreign References:
| CN102554242A |
Attorney, Agent or Firm:
Patents corporation Blitas