公开(公告)号：US20230082095A1

公开(公告)日：2023-03-16

申请号：US17794809

申请日：2020-03-30

Applicant: UACJ Corporation

Inventor： Shinichi NAKAMURA ,  Tomoki YAMAYOSHI ,  Takeyoshi DOKOU

IPC: B23K35/28 ,  B23K35/02 ,  C22C21/02 ,  C22C21/06 ,  C21D8/02

Abstract: A brazing sheet (1) includes a core material (11) composed of an Al alloy containing 0.40-2.50 mass % Mg; and a filler material (12) composed of an Al alloy containing Mg, 6.0-13.0 mass % Si, and 0.010-0.050 mass % Bi. The filler material is layered on a side of the core material and is exposed at an outermost surface (121). The Mg concentration in the filler material continuously decreases in a direction from a boundary (122) with the core material toward the outermost surface. The Mg concentration (c1/8) is 0.080 mass % or less at a depth (position P1/8) from the outermost surface that is ⅛ of the thickness tf of the filler material (12). The Mg concentration (c7/8) is 15-45% of the amount of Mg in the core material at a depth (position P7/8) from the outermost surface that is ⅞ of the thickness tf of the filler material.

公开(公告)号：US20180164052A1

公开(公告)日：2018-06-14

申请号：US15889769

申请日：2018-02-06

Applicant: UACJ CORPORATION ,  UACJ EXTRUSION CORPORATION ,  DENSO CORPORATION

Inventor： Shinichi NAKAMURA ,  Naoki YAMASHITA ,  Seiichi NAGAO ,  Satoshi SHIBATA ,  Kazuhisa NAITOU ,  Takeshi OKINOTANI ,  Susumu ICHIKAWA ,  Akira ITOH

IPC: F28F19/06 ,  B21C23/22 ,  F28F1/04 ,  F28F21/08 ,  C22C21/12 ,  C22C21/10

CPC classification number: F28F19/06 ,  B21C23/085 ,  B21C23/22 ,  C22C21/10 ,  C22C21/12 ,  C23F13/08 ,  C23F2201/00 ,  C23F2213/32 ,  F28F1/022 ,  F28F1/04 ,  F28F21/084 ,  F28F2255/16

Abstract: In this flat extruded aluminum multi-port tube, the corrosion-resistance, at inner surfaces of a plurality of flow passages independently and parallelly extending in the tube axial direction, is effectively enhanced. In a flat extruded aluminum multi-port tube 10 formed by an extrusion by employing an aluminum tube material and an aluminum sacrificial anode material having an electrochemically lower potential than the aluminum tube material, the aluminum sacrificial anode material is exposed to form a sacrificial anode portion 18 at least in a part of an inner circumferential portion in each of the plurality of flow passages 12.

公开(公告)号：US20240384817A1

公开(公告)日：2024-11-21

申请号：US18693197

申请日：2022-10-13

Applicant: UACJ Corporation

Inventor： Shinichi NAKAMURA ,  Taichi SUZUKI ,  Ryo TOMORI

IPC: F16L9/19 ,  B21C23/00 ,  B21C37/15 ,  C22C21/02 ,  C22F1/05

Abstract: An extruded, multi-hole pipe (1) has an aluminum alloy composition that contains Si: 0.30 mass % or more and 1.80 mass % or less, Cu: 0.10 mass % or more and 0.50 mass % or less, Mn: 0.30 mass % or more and 1.00 mass % or less, and Mg: 0.30 mass % or more and 1.00 mass % or less. The tensile strength of the extruded, multi-hole pipe (1) is 290 MPa or more.

公开(公告)号：US20210394311A1

公开(公告)日：2021-12-23

申请号：US17279873

申请日：2019-09-27

Applicant: UACJ Corporation ,  DENSO CORPORATION

Inventor： Shinichi NAKAMURA ,  Tomoki YAMAYOSHI ,  Takeyoshi DOKOU ,  Takahiro SHINODA ,  Shogo YAMADA ,  Yoshihiko SONODA ,  Naoki SUGIMOTO ,  Nobuhiro HONMA ,  Taketoshi TOYAMA

IPC: B23K35/28 ,  B23K35/02 ,  C22C21/08 ,  C22C21/02 ,  C23F1/20 ,  B23K20/04 ,  F28F3/02

Abstract: A brazing sheet (1) includes a core material (11) composed of an Al alloy that contains 0.20-3.0 mass % of Mg; and a filler material (12) layered on the core material and composed of an Al alloy that contains Mg, 6.0-13.0 mass % of Si, and more than 0.050 mass % and 1.0 mass % or less of Bi. The Mg concentration of the filler material becomes continuously lower in a direction from a boundary (122) with the core material to an outermost surface (121). The Mg concentration of the filler material is 0.150 mass % or less at a first depth from the outermost surface that is ⅛ of a thickness (tf) of the filler material and is 5-90% of the amount of Mg in the core material at a second depth from the outermost surface that is ⅞ of the thickness of the filler material.