Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Reexamination Certificate
1999-05-10
2001-09-25
Padgett, Marianne (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
C427S597000, C219S121660, C219S121850
Reexamination Certificate
active
06294225
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a method of improving the corrosion and wear resistance of a transport trailer surface. More specifically the present invention relates to a method of laser alloying the surface of a transport trailer to enhance the corrosion and wear resistant properties of the surface.
2. Description of the Prior Art
Transport trailer surfaces are used to transport materials that are abrasive and/or corrosive. In many applications materials having abrasive properties, such as gravel or larger rocks, are dumped into, or slid off of, transport trailer surfaces resulting in surface wear and abrasion. Prior art transport trailer surfaces often have short lives as a result of the abrasive and corrosive forces to which they are exposed.
SUMMARY OF THE INVENTION
The present invention is directed toward a method or process for improving the corrosion and wear resistance of a material transport trailer surface. The present invention comprises applying a precursor layer comprising metallic or ceramic powders to a material transport trailer surface. The precursor layer has a thickness in the range of 50-150 microns.
The present invention further comprises irradiating the surface of the trailer with a laser at a sufficient energy level and for a sufficient time to melt a portion of the surface while the surface is moving relative to the laser beam.
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Bible John Brice
Dahotre Narendra B.
Hopkins John A.
McCay Mary Helen
McCay T. Dwayne
Duane Morris & Heckscher LLP
Padgett Marianne
The University of Tennessee Research Corporation
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