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公开(公告)号：US11745245B2
公开(公告)日：2023-09-05
申请号：US17041601
申请日：2019-03-14
摘要： A metallic worked article suppressing the worked surfaces from being scratched during the plastic work that is conducted aiming at reducing the thickness or decreasing the diameter. The metallic worked article has a reduced thickness or a decreased diameter as obtained through the plastic work, wherein on the worked surface thereof, the ratio Ra1/Ra2 of an arithmetic mean roughness Ra1 measured in a direction at right angles with the direction of working and an arithmetic mean roughness Ra2 measured in the direction of working, is from 0.5 to 1.5.
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公开(公告)号：US11338954B2
公开(公告)日：2022-05-24
申请号：US16344612
申请日：2017-10-20
摘要： An aluminum can wherein, when the light reflected by the outer surface of the body portion of the aluminum can is evaluated based on the LCH method by using a multi-angle spectral colorimeter, the aluminum can features a ratio C15h/C15w of 0.6 to 1.4, the ratio C15h/C15w being that of a saturation value C15h of the light reflected at 15 degrees in the direction of height and a saturation value C15w of the light reflected at an angle 15 of degrees in the circumferential direction based on the light regularly reflected from the light that is incident at 45 degrees in the direction of height and in the circumferential direction.
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公开(公告)号：US12036597B2
公开(公告)日：2024-07-16
申请号：US17286171
申请日：2019-10-16
IPC分类号： B21D22/28
CPC分类号： B21D22/28
摘要： A jig for metal plastic working for use in plastic working of a metal or alloy workpiece, in which a working surface is moved relative to the workpiece in contact with the workpiece. The working surface of the jig is smoothed so that an arithmetic mean surface roughness Ra is not more than 0.12 μm, and so that no protrusion is observed that has a width of not less than 200 μm and a height of not less than 10 μm, which are calculated on a basis of a projection thereof along a working direction.
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公开(公告)号：US11267033B2
公开(公告)日：2022-03-08
申请号：US15774076
申请日：2016-11-22
发明人： Ryozo Shiroishi , Kenichi Takao , Takuho Kumagai
摘要： A mold used for blanking a metal plate to shape a blank to be drawn. The mold has a surface treatment film and a top face to be brought into contact with the metal plate and a peripheral end face communicated indirectly with the top face. At least the top face is coated with the surface treatment film.
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公开(公告)号：US20210069767A1
公开(公告)日：2021-03-11
申请号：US17099487
申请日：2020-11-16
摘要： A method of producing aluminum cans, including an ironing step using an ironing die (30). The ironing die has a carbon film (50) formed as to cover a working surface thereof. The carbon film exhibits a Raman spectrum such that an intensity ratio represented by ID/IG wherein ID is a maximum peak intensity at 1333±10 cm−1 in the Raman spectrum of the surface of said carbon film, and IG is a maximum peak intensity at 1500±100 cm−1 in the Raman spectrum of the surface of said carbon film, is not less than 1.2. The surface of the carbon film is a smooth surface having an arithmetic mean roughness R of not more than 0.05 μm. Further, the ironing step includes iron-working an aluminum sheet in a dry process using no lubricant while maintaining an ironing ratio in excess of 40%.
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