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1.发明申请公开(公告)号：US20180073118A1
公开(公告)日：2018-03-15
申请号：US15558205
申请日：2016-03-10
Applicant: UACJ Corporation
Inventor： Wataru NAKAGAWA , Satoshi TANAKA , Kazuko TERAYAMA
CPC classification number: C22F1/043 , B23K35/0238 , B23K35/28 , B23K35/286 , B23K35/288 , B23K2101/14 , B23K2103/10 , B32B15/16 , B32B15/20 , B60H1/3227 , C22C21/00 , C22C21/04 , C22F1/04 , F28F1/126 , F28F19/06 , F28F21/084 , F28F21/089 , F28F2275/04
Abstract: The aluminium-alloy brazing sheet fin material having a core material and a brazing material. Before heating for brazing, the fin material has an average degree of cladding of 6 to 16% for each surface, a thickness of 40 to 120 μm and an electrical conductivity of 48 to 54% IACS and the core material has a metallographic structure having a distribution in which a Mn-based compound having an equivalent circular diameter of 0.05 to 0.50 μm is present at an average distance between particles of 0.05 to 0.35 μm. After heating for brazing, the fin material has an electrical conductivity of 40 to 44% IACS and the core material has a metallographic structure having a distribution in which a Mn-based compound having an equivalent circular diameter of 0.50 μm or less is present at an average distance between particles of 0.45 μm or less.
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公开(公告)号：US20180363995A1
公开(公告)日：2018-12-20
申请号：US16110271
申请日：2018-08-23
Applicant: UACJ CORPORATION
Inventor： Wataru NAKAGAWA , Satoshi TANAKA
Abstract: Provided are an aluminum alloy brazing sheet for heat exchangers, which exhibits excellent formability and brazeability, and an advantageous process for producing the same. The aluminum alloy brazing sheet for heat exchangers according to the present invention is configured such that: the aluminum alloy composition of a core material and the aluminum alloy composition and temper of a filler material are respectively controlled; and a core material portion of the brazing sheet has a specific electric resistivity at room temperature and a specific dispersion ratio of second phase particles. The brazing sheet is configured to further exhibit certain properties in terms of a work hardening exponent (n-value) where a nominal strain is within a range of 1%-2% and in terms of a push-in depth when a penetration crack is generated in a punch stretch forming test using a round-head punch having a diameter of 50 mm.
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公开(公告)号：US20160114435A1
公开(公告)日：2016-04-28
申请号：US14987166
申请日：2016-01-04
Applicant: UACJ Corporation
Inventor： Yoshimasa KANNO , Satoshi TANAKA , Kazuko TERAYAMA
CPC classification number: B23K35/0238 , B23K35/286 , B23K35/288 , B32B15/016 , C22C21/00 , C22C21/02 , C22C21/04 , C22C21/08 , C22C21/10 , C22F1/00 , C22F1/04 , C22F1/043 , F28F21/084 , F28F21/089 , F28F2275/04
Abstract: An aluminum alloy brazing sheet for heat exchangers, having a core alloy containing Mn 0.6 to 2.0 mass %, Fe 0.05 to 0.5 mass %, Si 0.4 to 0.9 mass %, and Zn 0.02 to 4.0 mass %, with the balance being Al and unavoidable impurities; and as a skin alloy containing Si 6.0 to 13.0 mass %, Fe 0.05 to 0.80 mass %, and Cu 0.05 to 0.45 mass %, with the balance being Al and unavoidable impurities, wherein a ratio A/B of a number density A of specific precipitates with a particle size 0.1 μm or more but less than 3.0 μm, and a number density B of precipitates with a particle size 3.0 μm or more in the core alloy, satisfies: 50≦A/B≦500, and wherein an average grain size of the core alloy in a longitudinal cross-section of a fin after braze-heating is 100 μm or more; and a method of producing the same.
Abstract translation: 1.一种热交换器用铝合金钎焊片，其特征在于，含有Mn为0.6〜2.0质量％，Fe为0.05〜0.5质量％，Si为0.4〜0.9质量％，Zn为0.02〜4.0质量％的铁合金，余量为Al且不可避免 杂质; 作为Fe为6.0〜13.0质量％，Fe为0.05〜0.80质量％，Cu为0.05〜0.45质量％，余量为Al和不可避免的杂质的皮肤合金，其中A / B为特定 在芯合金中，粒径为0.1μm以上且小于3.0μm的析出物，粒径为3.0μm以上的析出物的数密度B满足：50＆lt; lE; A / B＆nlE; 500，其中平均颗粒 钎焊加热后的翅片的纵截面中的芯合金的尺寸为100μm以上; 及其制造方法。
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