Flux for lead-free solder and soldering method
    32.
    发明授权
    Flux for lead-free solder and soldering method 有权
    无铅焊料的焊剂和焊接方法

    公开(公告)号:US09073154B2

    公开(公告)日:2015-07-07

    申请号:US12311976

    申请日:2007-12-12

    摘要: A soldering flux which is suitable as a no-clean post flux in flow soldering and which can prevent the formation of whiskers which tends to occur when soldering electronic parts to a printed circuit board using a lead-free solder (such as Sn-3.0Ag-0.5Cu) having a higher Sn content and a higher melting point than the eutectic solder contains, in addition to a rosin as a base resin and an activator, 0.2-4 mass % of at least one compound selected from acid phosphate esters and derivatives thereof. The formation of whiskers can be more effectively prevented by carrying out soldering in a nitrogen atmosphere.

    摘要翻译: 适合作为流动焊接中的无清洁后焊剂的焊剂,其可以防止在使用无铅焊料(例如Sn-3.0Ag)将电子部件焊接到印刷电路板时容易发生的晶须的形成 -0.5Cu),除了松香作为基础树脂和活化剂之外,还含有0.2-4质量%的选自酸性磷酸酯和衍生物的至少一种化合物 其中。 通过在氮气气氛中进行焊接可以更有效地防止形成晶须。

    VOC Exempt Brazing Binder System
    34.
    发明申请
    VOC Exempt Brazing Binder System 审中-公开
    VOC豁免钎焊系统

    公开(公告)号:US20150174704A1

    公开(公告)日:2015-06-25

    申请号:US14577345

    申请日:2014-12-19

    发明人: Matthew M. Kasper

    IPC分类号: B23K35/36 B23K35/02

    摘要: By blending a brazing alloy, preferably a Cu, P, Sn, and Ni alloy, with a binder system (and in some cases other blended alloys), the invention includes several superior brazing binder systems. The brazing binder system is formed suitable for all the joint configurations commonly found in heat transfer equipment. The inventive binder system product includes an ultra low VOC coating, low VOC coating, and VOC exempt brazing binder system. The binder system may be sprayed on, brushed on, or applied using standard paste dispensing equipment.

    摘要翻译: 通过将钎焊合金,优选Cu,P,Sn和Ni合金与粘合剂体系(在一些情况下混合其它掺合合金)共混,本发明包括几种优异的钎焊粘合剂体系。 钎焊粘合剂系统形成适合于传热设备中常见的所有接头配置。 本发明的粘合剂体系产品包括超低VOC涂层,低VOC涂层和VOC豁免钎焊粘合剂体系。 可以使用标准糊剂分配设备将粘合剂体系喷涂,刷洗或施加。

    FLUX FOR RESIN CORED SOLDER AND RESIN CORED SOLDER
    39.
    发明申请
    FLUX FOR RESIN CORED SOLDER AND RESIN CORED SOLDER 审中-公开
    树脂焊丝和树脂焊丝

    公开(公告)号:US20150044465A1

    公开(公告)日:2015-02-12

    申请号:US14330718

    申请日:2014-07-14

    IPC分类号: B23K35/36 B23K35/02 B23K35/26

    摘要: A flux for resin cored solder containing a thermosetting resin is disclosed which is excellent in storage stability and productivity, and a resin cored solder having the flux built in. The flux for resin cored solder comprises a solid-state first flux containing a thermosetting resin, and a solid-state second flux containing a curing agent having redox activity, the first flux and the second flux being present in a non-contact state. A resin cored solder comprises the flux for resin cored solder and a lead-free solder alloy having a melting point ranging from 130° C. to 250° C. The resin cored solder is made up of a first resin cored solder in which the first flux is built into the lead-free solder alloy, and a second resin cored solder in which the second flux is built into the lead-free solder alloy.

    摘要翻译: 公开了一种含有热固性树脂的树脂芯焊剂的焊剂,其具有优异的储存稳定性和生产率,以及具有内置助焊剂的树脂芯焊料。用于树脂芯焊料的焊剂包括含有热固性树脂的固态第一焊剂, 以及包含具有氧化还原活性的固化剂的固态第二焊剂,所述第一焊剂和所述第二焊剂以非接触状态存在。 树脂芯焊料包括用于树脂芯焊料的焊剂和熔点范围为130℃至250℃的无铅焊料合金。树脂芯焊料由第一树脂芯焊料制成,其中第一 助焊剂内置于无铅焊料合金中,第二种树脂芯焊料,其中第二焊剂内置于无铅焊料合金中。

    Solder paste and electronic device
    40.
    发明授权
    Solder paste and electronic device 有权
    焊膏和电子设备

    公开(公告)号:US08920580B2

    公开(公告)日:2014-12-30

    申请号:US11812005

    申请日:2007-06-14

    IPC分类号: B23K35/34

    摘要: In solder paste of the present invention, a first metal powder, a second metal powder, and a third metal powder are dispersed in a flux or a thermosetting resin. The first metal powder includes a first metal material such as Cu, Ag, Au, or Pd that serves as a base metal. A second metal material such as Sn or In that has a melting point lower than that of the first metal material is coated on the surface of the first metal material. The second metal powder is made of a metal material such as Sn or In that has a melting point lower than that of the first metal material. The third metal powder such as a Cu, Ag, Au or Pd powder has an average particle diameter smaller than that of the first metal material and can form compounds with the second metal material and the second metal powder. Accordingly, the likelihood of unreacted components remaining after a heat treatment can be suppressed, and even when a reflow treatment is repeated a plurality of times, a decrease in the bonding strength of solder bonding can be prevented.

    摘要翻译: 在本发明的焊膏中,将第一金属粉末,第二金属粉末和第三金属粉末分散在助熔剂或热固性树脂中。 第一金属粉末包括用作贱金属的第一金属材料如Cu,Ag,Au或Pd。 具有比第一金属材料低的熔点的第二金属材料如Sn或In涂覆在第一金属材料的表面上。 第二金属粉末由熔点低于第一金属材料的Sn或In等金属材料制成。 第三金属粉末如Cu,Ag,Au或Pd粉末的平均粒径小于第一金属材料的平均粒径,并可与第二金属材料和第二金属粉末形成化合物。 因此,可以抑制在热处理后残留的未反应成分的可能性,并且即使重复多次回流处理,也可以防止焊接接合的接合强度的降低。