Apparatus for coating a pipe surface

Details Apparatus for coating a pipe surface Apparatus for coating a pipe surface

B - Operations, Transporting

05

B

B05B 13/06 (2006.01) B05B 15/00 (2006.01)

Patent

CA 2732008

A wear resistant coating is applied on an elbow or S-bend by weld beads applied along a pipe. A rectangular support rod is attached inside the pipe by connectors so that wheels of the carriage are guided on the corners to maintain a fixed orientation relative to the support rod. A three axis robot arm carries an electric welding head so as to be able to dynamically adjust the head both angularly and radially. A welding wire is pulled to the head by a feeding system on the carriage. The weld parameters including a predetermined wire stick out and angle of wire attack are controlled. A drive motor carried by a drive carriage propels the drive carriage longitudinally along the support rod with a series of intermediate carriages.

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