US 11,810,687 B2
Aluminum alloy wire, aluminum alloy strand wire, covered electrical wire, and terminal-equipped electrical wire
Misato Kusakari, Osaka (JP); Tetsuya Kuwabara, Osaka (JP); Yoshihiro Nakai, Osaka (JP); Taichiro Nishikawa, Osaka (JP); Yasuyuki Otsuka, Yokkaichi (JP); and Hayato Ooi, Yokkaichi (JP)
Assigned to SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka (JP); AUTONETWORKS TECHNOLOGIES, LTD., Yokkaichi (JP); and SUMITOMO WIRING SYSTEMS, LTD., Yokkaichi (JP)
Filed by Sumitomo Electric Industries, Ltd., Osaka (JP); AutoNetworks Technologies, Ltd., Yokkaichi (JP); and Sumitomo Wiring Systems, Ltd., Yokkaichi (JP)
Filed on May 11, 2021, as Appl. No. 17/317,180.
Application 17/317,180 is a continuation of application No. 17/003,394, filed on Aug. 26, 2020, granted, now 11,037,695.
Application 17/003,394 is a continuation of application No. 16/842,397, filed on Apr. 7, 2020, granted, now 10,796,811, issued on Oct. 6, 2020.
Application 16/842,397 is a continuation of application No. 16/677,734, filed on Nov. 8, 2019, granted, now 10,650,936, issued on May 12, 2020.
Application 16/677,734 is a continuation of application No. 16/346,479, granted, now 10,522,263, issued on Dec. 31, 2019, previously published as PCT/JP2017/030735, filed on Aug. 28, 2017.
Claims priority of application No. 2016-213155 (JP), filed on Oct. 31, 2016; and application No. 2017-074235 (JP), filed on Apr. 4, 2017.
Prior Publication US 2021/0272717 A1, Sep. 2, 2021
Int. Cl. H01B 1/02 (2006.01); C22C 21/08 (2006.01); C22F 1/05 (2006.01); H01B 13/00 (2006.01); H01B 5/08 (2006.01); H01B 5/02 (2006.01); C22C 21/00 (2006.01); H01B 7/00 (2006.01); C22F 1/00 (2006.01); C22F 1/04 (2006.01)
CPC H01B 1/023 (2013.01) [C22C 21/00 (2013.01); C22C 21/08 (2013.01); C22F 1/05 (2013.01); H01B 1/02 (2013.01); H01B 5/02 (2013.01); H01B 5/08 (2013.01); H01B 7/00 (2013.01); H01B 13/0006 (2013.01); H01B 13/0013 (2013.01); C22F 1/00 (2013.01); C22F 1/04 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method of manufacturing an aluminum alloy wire, the method comprising:
a casting step of forming a cast material by casting a melt of an aluminum alloy that contains more than or equal to 0.03 mass % and less than or equal to 1.5 mass % of Mg, more than or equal to 0.02 mass % and less than or equal to 2.0 mass % of Si, and a remainder of Al and an inevitable impurity, Mg/Si being more than or equal to 0.5 and less than or equal to 3.5 in mass ratio, wherein the aluminum alloy is molten at a temperature less than 750° C. and more than 675° C.;
an intermediate working step of performing plastic working to the cast material to form an intermediate work material;
a wire-drawing step of performing wire drawing to the intermediate work material to form a wire-drawn member; and
a heat treatment step of performing a heat treatment during the wire drawing or after the wire-drawing step,
wherein in the wire-drawing step, a wire drawing die having a surface roughness of less than or equal to 3 μm is used,
wherein in the wire-drawing step, a lubricant is used and an amount of adhesion of C to a surface of the wire-drawn member is set to more than or equal to 0.5 mass % and less than or equal to 25 mass % of the aluminum alloy by adjusting an amount of application of the lubricant, and
wherein a heat treatment condition in the heat treatment step is adjusted in order to achieve a desired value of a remaining amount of the lubricant on the surface of the wire-drawn member after the heat treatment step.