Coating processes – Spray coating utilizing flame or plasma heat – Continuous feed solid coating material
Reexamination Certificate
2005-06-07
2005-06-07
Bareford, Katherine (Department: 1762)
Coating processes
Spray coating utilizing flame or plasma heat
Continuous feed solid coating material
C427S453000, C427S455000, C427S456000
Reexamination Certificate
active
06902768
ABSTRACT:
The cylinder walls of light metal engine blocks are thermally spray coated with a ferrous-based coating including aluminum using an HVOF device. A ferrous-based wire is fed to the HVOF device to locate a tip end of the wire in a high temperature zone of the device. Jet flows of oxygen and gaseous fuel are fed to the high temperature zone and are combusted to generate heat to melt the tip end. The oxygen is oversupplied in relation to the gaseous fuel. The excess oxygen reacts with and burns a fraction of the ferrous-based feed wire in an exothermic reaction to generate substantial supplemental heat to the HVOF device. The molten/combusted metal is sprayed by the device onto the walls of the cylinder by the jet flow of gases.
REFERENCES:
patent: 4687678 (1987-08-01), Lindblom
patent: 5014916 (1991-05-01), Trapani et al.
patent: 5148986 (1992-09-01), Rusch
patent: 5271967 (1993-12-01), Kramer et al.
patent: 5275336 (1994-01-01), Stasi et al.
patent: 5380564 (1995-01-01), VanKuiken, Jr. et al.
patent: 5592927 (1997-01-01), Zaluzec et al.
patent: 5626674 (1997-05-01), VanKuiken, Jr. et al.
patent: 5820938 (1998-10-01), Pank et al.
patent: 6245390 (2001-06-01), Baranovski et al.
patent: 6485792 (2002-11-01), Grylls et al.
patent: 6610369 (2003-08-01), Byrnes et al.
Hong et al, “Impurity Effects on Adhesion: Nb, C, O, B, and S at a Mo/MoSi2Interface,”Physical Review B, vol. 47, No. 20, May 15, 1993, pp. 13 615-13 625.
Rabiei et al, “Microstructure, Deformation and Cracking Characteristics of Thermal Spray Ferrous Coatings,”Materials Science and Engineering A269, 1999, pp. 152-165.
Sigler, “Adherence Behavior of Oxide Grown in Air and Synthetic Exhaust Gas on Fe-Cr-Al Alloys Containing Strong Sulfide-Forming Elements: Ca, Mg, Y, Ce, La, Ti, and Zr,”Oxidation of Metals, vol. 40, Nos. 5/6, 1993, pp. 555-583.
Byrnes Larry Edward
Kramer Martin Stephen
Sigler David Rudolph
Smith John Robert
Teets Richard Earl
Bareford Katherine
Brooks Cary W.
LandOfFree
Method of producing thermally sprayed metallic coating with... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing thermally sprayed metallic coating with..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing thermally sprayed metallic coating with... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3495494