Browse Prior Art Database

RESISTANCE WELD FOR JOINING OF ENDCAPS

IP.com Disclosure Number: IPCOM000027164D
Original Publication Date: 1995-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 53K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a method for joining dissimilar materials for fuser roll applications to achieve better tolerances and lower unit manufacturing costs. The prior art utilizes a welding method to join a two-piece endcap, such as stainless steel or diecast aluminum to an aluminum tube. This process offers potential failure sites at the stainless steel/diecast interface as well as inherent porosity concerns with a welded aluminum interface.

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XEROX DISCLOSURE JOURNAL

RESISTANCE WELD FOR JOINING OF ENDCAPS U.S. C1.315/213 Richard G. LaBombard
Karen E. Halliley
Robert M. Fisher

Proposed Classification

Int. C1. G03g 05/00

Disclosed is a method for joining dissimilar materials for fuser roll applications to achieve better tolerances and lower unit manufacturing costs. The prior art utilizes a welding method to join a two-piece endcap, such as stainless steel or diecast aluminum to an aluminum tube. This process offers potential failure sites at the stainless steel/diecast interface as well as inherent porosity concerns with a welded aluminum interface.

An improved method comprises bonding a one piece stainless steel endcap to an aluminum tube through the use of resistance heating to weld a compatible bimetallic strip between the contacting surface thereby resulting in a uniform interface. The compatible bimetallic strip is comprised, for example, of stainless steel and aluminum and is oriented to abut to the like metal component being joined. Advantages of the improved process include: faster overall cycle time; tool control joining accuracy; stronger joint; higher quality/reliability ; and lower unit manufacturing costs.

XEROX DISCLOSURE JOURNAL - VO~. 20, NO. 4 JuIy/August 1995 301

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302 XEROX DISCLOSURE JOURNAL - VOI. 20, NO. 4 JuIy/August 1995

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