Method and apparatus for attaching ceramic to metal parts

Details Method and apparatus for attaching ceramic to metal parts Method and apparatus for attaching ceramic to metal parts

1991-10-15

1993-04-13

Chambers, A. Michael

Fluid handling

Processes

Cleaning, repairing, or assembling

137315, 251356, 403 30, F16L 5518, F16K 5100

Patent

active

052013359

ABSTRACT:
A metal valve stem is attached to a ceramic valve plug. An elongated metal screw member has an expandable section securely wedged into a cavity in the plug as the attached screw/ceramic plug are threadably tightened on the valve stem. A first pre-wedging step presses an expander on the screw to fully bend the expander inside the ceramic cavity. The second wedging step during tightening of the screw/plug on the stem ensures uniform loading of the expander on the ceramic cavity surfaces.

REFERENCES:
patent: 3281904 (1966-11-01), Murton
patent: 3352533 (1967-11-01), Murton
patent: 3352534 (1967-11-01), Harley
patent: 4575047 (1986-03-01), Boos et al.

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