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US 6,319,560 B1Granted
Apparatus and method for coating the outer surface of a workpiece
AssigneeSulzer Metco (US), Inc.
InventorsDavid Hawley, Montia Nestler, Kevin Varley
Life of this patent
Estimating the term…
Abstract
A method and apparatus for coating the outer surface of a workpiece comprises disposing a workpiece in a fixed position along an axis and rotating a thermal spray gun around the axis on a support with a thermal spray thereof directed towards the axis. The powder, fuel and oxygen are rotatably coupling to the gun and the thermal spray gun and the support are moving along the axis while rotating.
Claims16
A method for coating the outer surface of a workpiece, comprising the steps of:
- disposing a workpiece in a fixed position along an axis;
- rotating a thermal spray gun around the axis on a member downwardly depending from a support with a thermal spray thereof directed towards the axis to space the thermal spray gun from the support along the axis;
- rotatably coupling powder, fuel and oxygen to the gun;
- and
- moving the thermal spray gun and the support along the axis independently of the surface of the workpiece to be coated to move the thermal spray gun along the entire length of the workpiece along the axis while rotating.
2 more elements
An apparatus for coating the outer surface of a workpiece, comprising:
- a support mounted for rotation about an axis and having a fixture mounting a thermal spray gun with a coating spray thereof directed towards the axis, wherein the fixture includes a downwardly depending member to which the thermal spray gun is connected and which spaces the thermal spray gun from the support along the axis to permit a workpiece to be coated along its entire length parallel to the axis and whereby the workpiece disposed at the axis will be coated thereby;
- wherein the thermal spray gun has inputs for powder, fuel and oxygen;
- a supply line for each of the powder, fuel and oxygen rotatable with the support for supplying the powder, fuel and oxygen to the thermal spray gun;
- at least one coupling having a first portion rotatable with the support and a second portion having ports for receiving the powder, fuel and oxygen and communicating same to the corresponding supply lines;
- a motor for rotating the support;
- and
- a mechanism for moving the support and the thermal spray gun parallel to the axis independently of the surface of the workpiece to be coated.
4 more elements
Dependencies are inferred from the claim text.