Brazing of ink jet print head components using thin layers of br

Details Brazing of ink jet print head components using thin layers of br Brazing of ink jet print head components using thin layers of br

1988-09-01

1989-10-24

Godici, Nicholas P.

Metal fusion bonding

Process

Plural joints

228195, 228206, 228209, 228254, 22826315, B23K 2000

Patent

active

048756199

ABSTRACT:
A first surface of a first metal component of an ink jet print head is bonded to a second surface of a second metal component of the ink jet print head, the first and second surfaces being of materials having the same or similar coefficients of thermal expansion. A layer of filler material is electroplated or otherwise placed on at least one of these surfaces. The filler material has a melting point which is below the melting point of the first and second components, and the total thickness of the filler material on the surfaces together is in the range of from approximately one-sixteenth micron to approximately five microns, with one-eighth micron to two microns being a preferred range. These surfaces are placed together and brazed under low pressure. Preferably, the braze pressure is from about one-half psi to no more than about one hundred psi, with about ten psi being most preferred.

REFERENCES:
patent: 3530568 (1970-09-01), Owczarski et al.
patent: 4150776 (1979-04-01), Lesgourgues
patent: 4392145 (1983-07-01), Pakola
patent: 4460906 (1984-07-01), Kanayama
patent: 4685185 (1987-08-01), Boso et al.
patent: 4728969 (1988-03-01), Le et al.
Article entitled "Advanced Diffusion-Welding Processes" by W. A. Owczarski and D. S. Duvall, Pratt & Whitney Aircraft Division, United Technologies Corp., East Hartford, Connecticut. Source: New Trends in Materials Processing, ASM, 1976.
Article entitled "Use of Electrodeposition to Provide Coatings for Solid State Bonding" by J. W. Dini. Source: Welding Journal, Nov., 1982.
Article entitled "High Strength Diffusion Welding of Silver Coated Base Metals" by M. O'Brien, C. R. Rice and D. L. Olson. Source: Welding Journal, Jan. 1976.
Article entitled "Use of Electrodeposited Silver as an Aid in Diffusion Welding" by J. W. Dini, W. K. Kelley, W. C. Cowden and E. M. Lopez. Source: Welding Research Supplement, Jan. 1984.
Article entitled "TLP Bonding: a New Method of Joining Heat Resistant Alloys" by D. S. Duvall, W. A. Owczarski and D. F. Paulonis. Source: Welding Journal, Apr. 1974.
Article entitled "Processes-Introduction to Diffusion Bonding" by P. M. Bartle. Source: Metal Construction and British Welding Journal, May, 1969.
Article entitled "Diffusion Welding of Steel in Air" by E. G. Signes. Source: Welding Research Supplement, Dec. 1968.
Article entitled "Mechanism of Solid State Pressure Welding" by H. A. Mohamed and J. Washburn. Source: Welding Research Supplement, Sep., 1975.
Article entitled "Diffusion Bonding of Metals" by W. M. Spurgeon, S. K. Rhee and R. S. Kiwak. Source: Bendix Technical Journal, Spring, 1969.
Article entitled "Eutectic Bonding of Prescision Metal Parts", by E. R. Beldeman, W. R. Cann, J. J. Meglemre. Source: North American Aviation, Inc.

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