4.
    发明专利
    未知

    公开(公告)号:DE1752137A1

    公开(公告)日:1971-05-13

    申请号:DE1752137

    申请日:1968-04-09

    Applicant: IBM

    Abstract: 1,179,532. Soldering. INTERNATIONAL BUSINESS MACHINES CORP. 17 April, 1968 [5 May, 1967]. No. 18051/68. Heading B3R. [Also in Division C7] A rosin flux alcohol composition comprises a rosin flux dissolved in benzyl alcohol the solids content of the composition being 40- 70% by weight. The flux is used in soldering applications in the electrical and electronic field and particularly in the electronic computer field. In an example, an article to be tinned is first fluxed with the composition and then immersed in a 10% Sn 90% Pb solder bath at 625‹ F. The tinned article was then cleaned in perchloroethylene. In a further example, electrical chips are bonded to a substrate using the flux composition and the fluxed assembly is passed through a belt furnace.

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