公开(公告)号：EP1862251A1

公开(公告)日：2007-12-05

申请号：EP06729784.6

申请日：2006-03-23

申请人： Jemco Inc. ,  MITSUBISHI MATERIALS CORPORATION

发明人： HONDA, Kazuyoshi ,  SAITOH, Satoru

IPC分类号： B23K35/363 ,  B23K35/40

CPC分类号： B23K35/3605

摘要： It is aimed at providing a brazing flux powder, which exhibits an excellent spreadability in case of brazing of an Mg-containing aluminum-based material, which is non-corrosive and is thus excellent in safety, which is relatively inexpensive and is thus economically excellent, and which can be used in a wide and general manner. There is provided an improvement in a flux powder containing therein KAlF 4 , K 2 AlF 5 , and K 2 AlF 5 ·H 2 O, usable for brazing of an aluminum-based material having an Mg content of 0.1 to 1.0 wt%, and the improving characteristic configuration resides in that the flux powder has a composition where a K/Al molar ratio is within a range of 1.00 to 1.20 and an F/Al molar ratio is within a range of 3.80 to 4.10, and the K 2 AlF 5 and K 2 AlF 5 ·H 2 O have a sum content of 6.0 to 40.0 wt%, balance KAlF 4 , and that part or the whole of the crystal structure of K 2 AlF 5 ·H 2 O is at least one of a K-defective type, F-defective type, and K-and-F-defective type crystal structure.

摘要翻译： 目的在于提供一种钎焊助焊剂粉末，其在不腐蚀性的Mg含量的铝基材料的钎焊的情况下表现出优异的铺展性，因此安全性优异，这是相对便宜的，因此经济地优异 ，并且可以以广泛和一般的方式使用。 提供含有KAlF 4，K 2 AlF 5和K 2 AlF 5·H 2 O的焊剂粉末的改进，其可用于Mg含量为0.1〜1.0重量％的铝系材料的钎焊，以及 改进的特征构成在于助熔剂粉末具有K / Al摩尔比在1.00〜1.20的范围内且F / Al摩尔比在3.80〜4.10的范围内的组成，K 2 AlF 5 和K 2 AlF 5·H 2 O的总含量为6.0〜40.0重量％，余量为KAlF 4，K 2 AlF 5·H 2 O的部分或整体的晶体结构为K 有缺陷型，F缺陷型，K型和F型缺陷型晶体结构。