Patent · US Expired

Apparatus for inside-outside tube quenching

US4834344A · kind A · utility

8Cited by

9References

5Claims

0Family size

Assignee

Surface Combustion, Inc. · US

Inventors

Max Hoetzl · Toledo, US
Robert Stahl · Herbrechtingen, DE
Louis E. Franceschina · Rochester, US

Key dates

Filing date	Feb 20, 1987
Grant date	May 30, 1989
Priority date	—
Expiry date	Feb 20, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05B9/0423
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An inside-outside quench arrangement is disclosed for long steel pipe which utilizes a tangential quench arrangement to cool the pipe's outside surface and an axial flow nozzle to cool the pipe's inside surface at approximately the same cooling rate. The O.D. quench arrangement includes a manifold carrying jet nozzles circumscribing the pipe which can be pivoted apart to permit a four-bar linkage mechanism to smoothly and efficiently transfer the pipe into and out of the arrangement for quenching. A roller drive arrangement rotates the pipe in a longitudinally stationary position to minimize pipe bow and enhance pipe cooling.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.