Milling head and methods for tube end preparation

a milling head and tube end technology, applied in the field of milling heads, can solve the problems of limited use of rotary milling tools for membrane removal on existing tubes of tube walls, and the need for replacement of tubes, etc., and achieve the effect of efficiently complete tube preparation and convenient adjustmen

Inactive Publication Date: 2012-03-29
CLIMAX PORTABLE MACHINE TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Enables efficient preparation of tube ends for welding, ensuring a strong durable weld and minimizing downtime by allowing simultaneous material removal and beveling operations, improving the quality and speed of tube bank repairs.

Problems solved by technology

On account of deterioration due to corrosion and the like, the tubes occasionally require replacement.
The exposed tube ends of the existing tube wall, however, must be prepared for welding on-site, often in a confined space.
Membrane removal utilizing rotary milling tools on an existing tube of a tube wall has been limited to a cutting sweep equal to the outer radius of a tube.

Method used

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  • Milling head and methods for tube end preparation
  • Milling head and methods for tube end preparation
  • Milling head and methods for tube end preparation

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Embodiment Construction

[0037]This description of preferred embodiments is to be read in connection with the accompanying drawings, which are part of the entire written description of this invention. In the description, corresponding reference numbers are used throughout to identify the same or functionally similar elements. Relative terms such as “horizontal,”“vertical,”“up,”“down,”“top” and “bottom” as well as derivatives thereof (e.g., “horizontally,”“downwardly,”“upwardly,” etc.) should be construed to refer to the orientation as then described or as shown in the drawing figure under discussion. These relative terms are for convenience of description and are not intended to require a particular orientation unless specifically stated as such. Terms including “inwardly” versus “outwardly,”“longitudinal” versus “lateral” and the like are to be interpreted relative to one another or relative to an axis of elongation, or an axis or center of rotation, as appropriate. Terms concerning attachments, coupling a...

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Abstract

A milling head for use in conjunction with a rotary milling tool that is utilized to perform an operation on a tube, preferably of a tube bank or tube wall of a boiler system. The milling head is utilized to remove material or film from the outer diameter of a tube, or place a bevel on a tube end, or both. In one embodiment, the milling head includes at least one outer diameter milling element and at least one bevel milling element that are adjustable in relation to each other as well as the milling head body. Methods for milling a tube are also described.

Description

CROSS-REFERENCE[0001]This application is a continuation application of pending U.S. patent application Ser. No. 11 / 256,125, filed Oct. 21, 2005 for MILLING HEAD AND METHODS FOR TUBE END PREPARATION.FIELD OF THE INVENTION[0002]The present invention relates to a milling head for use in conjunction with a rotary milling tool that is utilized to perform an operation on a tube, preferably of a tube bank or tube wall of a boiler system. The milling head is utilized to remove material or film from the outer diameter of a tube, or place a bevel on a tube end, or both. In a preferred embodiment, the milling head includes at least one outer diameter milling element and at least one bevel milling element that are adjustable in relation to each other as well as the milling head body. Methods for milling a tube are also described.BACKGROUND OF THE INVENTION[0003]Power generating or other plants circulate fluids, such as water or steam, through tubes or banks of tubes. The fluid is often heated a...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): B23C3/12B23C5/12
CPCB23C3/122Y10T407/1928Y10T407/1936Y10T82/22Y10T409/303752Y10T409/303808
InventorHALL, J. RANDALL
OwnerCLIMAX PORTABLE MACHINE TOOLS