公开(公告)号：US20180214964A1

公开(公告)日：2018-08-02

申请号：US15747609

申请日：2016-05-18

Applicant: UACJ Corporation

Inventor： Yasunaga ITOH ,  Yutaka YANAGAWA ,  Tomoki YAMAYOSHI ,  Junji NINOMIYA ,  Tsubasa YANAGIMOTO

IPC: B23K1/19 ,  B23K1/20 ,  B23K35/28

CPC classification number: B23K1/19 ,  B23K1/0012 ,  B23K1/20 ,  B23K31/02 ,  B23K35/0222 ,  B23K35/0238 ,  B23K35/286 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  C22C21/02

Abstract: A brazing method includes shaping a clad sheet to form a hollow structure. A tube is then partially inserted into a through hole in the hollow structure, thereby forming an assembled aluminum structure. The exterior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy that serves as a first filler material. The interior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy containing at least one of Cu and Zn and having a solidus temperature of 570° C. or less that serves as a second filler material. The assembled aluminum structure is brazed by heating it in an inert-gas atmosphere such that fillets joining the hollow structure to the tube along the through hole are formed first on the interior surface of the hollow structure and then on the exterior surface of the hollow structure.

公开(公告)号：US20180133845A1

公开(公告)日：2018-05-17

申请号：US15572945

申请日：2016-05-18

Applicant: UACJ Corporation

Inventor： Yasunaga ITOH ,  Yutaka YANAGAWA ,  Tomoki YAMAYOSHI ,  Junji NINOMIYA ,  Tsubasa YANAGIMOTO

IPC: B23K35/28 ,  B23P15/26 ,  F28F9/16 ,  B23K1/00 ,  B23K35/38 ,  B23K1/19 ,  C22C21/02 ,  C22C21/08

CPC classification number: B23K35/286 ,  B23K1/00 ,  B23K1/0012 ,  B23K1/19 ,  B23K31/02 ,  B23K35/22 ,  B23K35/28 ,  B23K35/383 ,  B23K2101/14 ,  B23K2103/10 ,  B23P15/26 ,  C22C21/00 ,  C22C21/02 ,  C22C21/08 ,  F28F9/16 ,  F28F2275/04

Abstract: A brazing method includes shaping a clad plate to form a hollow structure. The clad plate has at least one layer containing an element that breaks down an oxide film when heated. A tube is then partially inserted into a through hole in the hollow structure, thereby forming an assembled aluminum structure. The exterior surface of the hollow structure adjacent the through hole is composed of an Al—Si alloy that serves as a filler-material layer. The exterior surface of the tube that opposes the through hole of the hollow structure is composed of aluminum or an aluminum alloy that does not function as a filler when brazed. The assembled aluminum structure is brazed by heating it and then cooling it in an inert-gas atmosphere such that the filler-material layer of the clad plate flows and forms a fillet joining the hollow structure to the tube along the through hole.

公开(公告)号：US20190162492A1

公开(公告)日：2019-05-30

申请号：US16091776

申请日：2017-04-12

Applicant: UACJ Corporation

Inventor： Tomohito KUROSAKI ,  Junji NINOMIYA ,  Yoshihiko MIZUTA ,  Ryoko FUJIMURA

IPC: F28F21/08 ,  F28F19/00

Abstract: An aluminum alloy fin material includes an aluminum alloy containing 1.50 to 5.00 mass % Si with the balance of Al and inevitable impurities, and has the function of being bonded by heating with a single layer. Assuming that in a cross section along the thickness direction of the fin material, the equivalent circle diameter of a Si particle is represented by D, a distance from a surface layer to the center of the Si particle is represented by L, the thickness of the fin material is represented by t, and a length parallel to the surface layer is represented by W, all Si particles that are present in the range of the length W and satisfy D≥L and L+D>0.04 t also satisfy 0≤ΣπD2

公开(公告)号：US20160116234A1

公开(公告)日：2016-04-28

申请号：US14895204

申请日：2014-06-02

Applicant: UACJ Corporation

Inventor： Takashi MURASE ,  Kotaro KITAWAKI ,  Tomohito KUROSAKI ,  Junji NINOMIYA

IPC: F28F21/08 ,  F28F1/10

CPC classification number: F28F21/084 ,  B22D11/003 ,  B22D11/0622 ,  C22C21/00 ,  C22C21/02 ,  C22F1/043 ,  F28F1/10 ,  F28F1/12 ,  F28F19/06

Abstract: There is provided a heat exchanger and a fin material for the heat exchanger that can suppress occurrence of hollow corrosion in a fin and hold cooling performance for a long period of time under a high corrosion environment. The heat exchanger includes an aluminum tube through which a working fluid circulates and an aluminum fin which is bonded to the tube. The fin has a region B around a grain boundary, and a region A around the region B. In the region B, 5.0×104 pieces/mm2 less of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present. In the region A, 5.0×104 pieces/mm2 to 1.0×10′ pieces/mm2 of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present.

Abstract translation: 提供了用于热交换器的热交换器和翅片材料，其可以在高腐蚀环境下长时间地抑制翅片中的中空腐蚀的发生并保持冷却性能。 热交换器包括工作流体循环的铝管和结合到管的铝翅片。 翅片具有围绕晶界的区域B和区域B周围的区域A.在区域B中，Al x Fe-Mn-Si系金属间化合物的5.0×104个/ mm 2以下具有相同的圆 存在0.1〜2.5μm的直径。 在区域A中，存在Al x Fe-Mn-Si系金属间化合物的5.0×10 4个/ mm 2〜1.0×10 6个/ mm 2，各自具有0.1〜2.5μm的当量圆直径。