Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1975-02-21
1977-03-29
Van Horn, Charles E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
65 40, 65 59B, 156289, 219113, 219118, 219148, 228107, 228174, 427 50, 427250, B23K 1126, C03C 2708, C23C 1308
Patent
active
040147290
ABSTRACT:
Bonds are made between two work pieces by using foils exploded by electrical energy typically stored in a large capacitor. To increase the uniformity of the bond area, a foil having at least one slit cut in the direction of current flow is used. The foil strips separated by the slit are attracted together by the pinch effect when current is applied, tending to eliminate loss of foil through a jetting action during explosion. Platings are made by pressing the foil between the work piece and a plastic layer to which the foil does not adhere. In both bonding and plating, the capacitor is charged with energy sufficient to bring the foil just to its boiling point. This "tuning" is more efficient and minimizes heat and blast effects that might otherwise damage a small work piece.
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patent: 3846204 (1974-11-01), Eisler
Arnold, H. et al., "About Distances in the `Characteristic Pattern` of Exploding Wires" in Exploding Wires, vol. 2, Plenum Press, N.Y. (1962), pp. 77-86.
Schiff, D., "Bonding Experiments With Exploding Foils", in Exploding Wires, vol. 1, Plenum Press, N.Y. (1959), pp. 283-287.
Woffinden, G. J., "Exploding Metal Films" in Exploding Wires, vol. 3, Plenum Press, New York (1964), pp. 193, 198-199, 204-205.
Bell Telephone Laboratories Incorporated
Freedman Barry H.
Van Horn Charles E.
Wityshyn M. G.
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