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    Process of fabricating a composite zinc printing plate
    3.
    发明授权
    Process of fabricating a composite zinc printing plate 失效
    制作复合锌版印刷板的工艺

    公开(公告)号：US3568753A

    公开(公告)日：1971-03-09

    申请号：US3568753D

    申请日：1967-12-18

    Applicant: TEXAS INSTRUMENTS INC

    Inventor： CLARKE JOHN F

    IPC: B41N1/06 ,  C23C2/00 ,  C23C2/40 ,  B22D11/00 ,  B41D3/00

    CPC classification number: C23C2/40 ,  B41N1/06 ,  C23C2/006

    Abstract: In all forms of the invention at least one heat absorbing aluminum backing strip has one side prepared for bonding zinc thereto. The strip is then moved first through a pool of molten zinc and then through a slot in a cooling die. The slot in the die is wider than the thickness of the strip. Zinc from the pool is caused to flow controllably into the die slot and to freeze on the prepared face to form a zinc coating thereon as the strip approaches and passes through the die. The die is of a nonsticking short-throat type so as to produce a smooth finish on the coating before complete freezing occurs. The side of the strip which is not to receive a coat of zinc is shielded from the molten zinc. In one form of the invention, shielding from the zinc is accomplished by placing two aluminum strips back to back as they pass through the zinc melt and the die. In another form, the back of the aluminum strip is shielded by omitting to clean that side of the strip and/or applying a suitable zinc-repellant substance such as a film of oil or the like. In another form of the invention the back of the aluminum strip engages part of the crucible containing the melt, to effect shielding.

    Method for making thermostat metal
    6.
    发明授权
    Method for making thermostat metal 失效
    制备热稳定剂金属的方法

    公开(公告)号：US3646591A

    公开(公告)日：1972-02-29

    申请号：US3646591D

    申请日：1968-12-18

    Applicant: TEXAS INSTRUMENTS INC

    Inventor： THOMAS SETH R ,  CLARKE JOHN F

    IPC: B23K20/00 ,  G01K5/64 ,  B23K31/02

    CPC classification number: B23K20/00 ,  G01K5/64 ,  H01H2037/525

    Abstract: A process for making thermostat metals embodying a plurality of oxidizable metal layers such as layers of iron or iron alloy, is shown to comprise the steps of cleaning the surfaces of thin strips of such metals having relatively high and low coefficients of thermal expansion respectively, interfacially contacting the cleaned surfaces of the strips, squeezing the strips together with sufficient reduction of the strip materials to form incipient metallurgical bonds between the strips in the solid phase, and heating the resulting bonded composite material to a sufficiently high temperature for substantially completely dispersing oxides from the interfacially contacted surfaces of the strips into the strip material and for increasing the bonds between the strips by diffusion in the strip materials for substantially completely bonding the interfacially contacted surfaces of the strips together in the solid phase.

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