Methods for coating conduit interior surfaces utilizing a...

Details Methods for coating conduit interior surfaces utilizing a... Methods for coating conduit interior surfaces utilizing a...

2007-10-02

2007-10-02

Fletcher, III, William Phillip (Department: 1762)

Coating processes

Interior of hollow article coating

Spraying

C427S238000, C427S446000

Reexamination Certificate

active

11122164

ABSTRACT:
Systems and methods for applying a coating to an interior surface of a conduit. In one embodiment, a spray gun configured to apply a coating is attached to an extension arm which may be inserted into the bore of a pipe. The spray gun may be a thermal spray gun adapted to apply a powder coating. An evacuation system may be used to provide a volume area of reduced air pressure for drawing overspray out of the pipe interior during coating. The extension arm as well as the spray gun may be cooled to maintain a consistent temperature in the system, allowing for more consistent coating.

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“Pathways for Enhanced Integrity, Reliability and Deliverability” Sep. 2000, US Department of Energy Office of Fossil Energy and the National Energy Technology Laboratory. Report No. DOE/NETL-2000/1130.

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