Tubular articles with varying wall thickness and method of...

Details Tubular articles with varying wall thickness and method of... Tubular articles with varying wall thickness and method of...

2005-10-28

2008-08-19

Suhol, Dmitry (Department: 3725)

Metal deforming

Process

Tube making or reshaping

C072S370140, C072S370150, C072S370230, C072S260000, C072S276000, C072S283000, C301S124100

Reexamination Certificate

active

07412866

ABSTRACT:
A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the shape of the mandrel; and extraction of the mandrel from the tube to cause outward deformation of the tube at specific locations. A further reducing step may be used to form the final desired profile, including reduced inner and outer diameters along sections of the axle tube housing.

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