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Process for manufacturing a bearing

a manufacturing process and bearing technology, applied in the direction of shaft assembly, rotary machine parts, mechanical equipment, etc., can solve the problems of micro cracks forming in the hard facing material, and achieve the effects of more radial space, more loading capacity, and strong and ruggedness

Inactive Publication Date: 2011-06-09
ASHMIN L C
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014]An advantage of the present invention includes use of an outer diameter fusion process which eliminates the need for separate radial bearing systems and components. Another advantage is that the radial bearing product of the present invention is stronger and more rugged than prior art bearings. Yet another advantage is that the coating of the present invention will endure the severe temperature and shock loads imposed on down hole tools employed in boring holes in subterranean formations.

Problems solved by technology

Additionally, the step of rapidly cooling may further include forming micro cracks within the hard facing material.

Method used

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Embodiment Construction

[0038]Referring now to FIG. 1, a cross-sectional view of a core sleeve 2 of the present invention is shown. The core sleeve 2 is made up from easy weldable and machinable material such as carbon steel in the preferred embodiment. The core sleeve 2 can also be constructed of a hard plastic. The core sleeve 2 has an outer diameter surface 4 and an inner diameter surface 6. As will be more fully set out, it is important to retain an accurate measurement of the outer diameter surface 4.

[0039]FIG. 2 is a cross-sectional view of the core sleeve 2 of FIG. 1 with a first coating applied thereto. More specifically, the operator will apply a layer of hard facing to the outer diameter surface 4. In the most preferred embodiment, the fusion process is utilized. An oxygen settling process or a laser process, both of which are commercially available, can be utilized in this hard facing step. In the most preferred embodiment, the laser process is utilized as set out below. Also in the most preferr...

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Abstract

A process for manufacturing a bearing, which may be used in a tool within a bore hole. The process includes providing a tubular sleeve, applying a hard facing material on an outer surface of the tubular sleeve so that the hard facing material is fixed to the outer surface, and thereafter applying a material layer over the hard facing material so that the material layer is fixed to the hard facing material. The process further includes machining the material layer so that a portion of the material layer is removed, and then machining the inner surface so that only the hard facing material is left as an inner surface. The process further includes machining the inner and outer surfaces to form the bearing. The process further includes placing the bearing into a housing and inserting a mandrel into the bearing, where a hard coating of the mandrel abuts the bearing.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This continuation-in-part application claims the benefit of and priority to U.S. patent application Ser. No. 11 / 157,730, filed on Jun. 21, 2005, which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]This invention relates to a wear surface, hard facing and process. More specifically, but not by way of limitation, this invention relates to a bearing used in surface facilities as well as down hole tools situated in a well bore, and a process for manufacturing the bearing.[0003]In the search for oil and gas, operators find it necessary to drill with a down hole tool that utilizes a down hole motor. As those of ordinary skill in the art will appreciate, the down hole motor includes a stationary housing and a concentrically disposed drive shaft, wherein the drive shaft has attached a bit means for boring a bore hole. The mandrel is rotated while concentrically located within the stationary housing. The friction created by t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B21K1/10
CPCB21D53/10Y10T29/49643F16C33/14E21B4/003F16C2220/62F16C2226/36F16C2220/70F16C2220/60F16C2220/82F16C2220/66F16C2226/12F16C2226/14F16C2352/00
Inventor VON GYNZ-REKOWSKI, GUNTHER HH.
Owner ASHMIN L C
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