JOINT STRUCTURE FOR METALLIC PIPES
    1.
    发明公开
    JOINT STRUCTURE FOR METALLIC PIPES 审中-公开
    VERBINDUNGSSTRUKTURFÜRMETALLROHRE

    公开(公告)号:EP2660000A4

    公开(公告)日:2017-07-19

    申请号:EP11853895

    申请日:2011-12-22

    申请人: DAIKIN IND LTD

    摘要: In order to realize a joint structure for metallic pipes which is capable of suppressing cost increase while suppressing a deterioration in reliability of a joint portion between metallic pipes, the present invention provides a joint structure for metallic pipes in which: one of a first metallic pipe (11) containing a first metal (M1) as a main component and a second metallic pipe (12) containing a second metal (M2) as a main component includes an expanded-diameter connecting part (13) which is formed at an end part of the one metallic pipe, an inner diameter of the end part is greater than an inner diameter of an adjacent part (16) that is adjacent to the end part; an intermetallic compound layer (15) of the first metal (M1) and the second metal (M2) is present at an interface of the first metal (M1) and the second metal (M2) located between a brazing filler metal (14) and the one or the other of the metallic pipes; and a thickness of the intermetallic compound layer (15) is configured such that the thickness of an end portion (15b) on the side of a base end (13b) is smaller than the thickness of an end portion (15a) on the side of an open end (13a).

    摘要翻译: 为了实现能够在抑制金属管之间的接合部分的可靠性恶化的同时抑制成本增加的金属管的接合结构,本发明提供了一种用于金属管的接合结构,其中:第一金属管 其特征在于,以第一金属(M1)为主要成分的第一金属管(11)和以第二金属(M2)为主要成分的第二金属管(12)具有扩径连接部(13),该扩径连接部 所述端部的内径大于与所述端部相邻的相邻部分(16)的内径; 第一金属(M1)和第二金属(M2)的金属间化合物层(15)位于第一金属(M1)和第二金属(M2)之间的位于钎料(14)和 金属管中的一个或另一个; 并且金属间化合物层(15)的厚度被构造成使得基端(13b)侧的端部(15b)的厚度小于端部(15b)的侧部的厚度 开放端(13a)。