Coating processes – Solid particles or fibers applied – Uniting particles to form continuous coating with...
Patent
1991-11-14
1993-03-30
Beck, Shrive
Coating processes
Solid particles or fibers applied
Uniting particles to form continuous coating with...
427191, 427224, 427225, 427319, 427328, 4273744, 4273766, 427380, 4273837, 427422, 427427, 419 9, 419 14, 428564, 428680, 428937, B05D 302
Patent
active
051982684
ABSTRACT:
Preparation of feed screw having a wear resistant alloy coating thereon for the injection molding or extrusion of plastic. Nickel-based alloys that have shown themselves to be compatible with inlaid barrel liners by virtue of similar wear ratios, modulus of elasticity, ultimate yield strength, and linear thermal coefficients of expansion, are sprayed at high velocity onto a heated feed screw to mechanically bond the alloy to the feed screw. The alloy is then fused to the feed screw in a controlled manner. Following the fusing process, the feed screw and alloy thereon is heated and allowed to cool in a highly controlled environment to produce a crack-free dense coating of the alloy on the screw substrate.
REFERENCES:
patent: 3996398 (1976-12-01), Manfredi
patent: 4027367 (1977-06-01), Rondeau
patent: 4136230 (1979-01-01), Patel
patent: 4173685 (1979-11-01), Weatherly
patent: 4682987 (1987-07-01), Brady et al.
patent: 4731253 (1988-03-01), DuBois
patent: 4906529 (1990-03-01), Brundbjerg et al.
Beck Shrive
Owens Terry J.
Xaloy Incorporated
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