Importance

Loading Importance Indicators...

Abstract

Improved methods for quenching a metal tube are disclosed. A method of manufacturing a metal tube generally comprises solution heat treating a metal tube at an elevated temperature, rapidly cooling the metal tube from the elevated temperature, raising the open end of the metal tube to an elevated position, and lowering the open end of the metal tube to a downward facing position, wherein the metal tube comprises an open end and an opposing closed end, wherein the immersing step comprises at least partially filling the metal tube with the cooling liquid, and developing an evolved gas inside the metal tube, wherein the raising comprises releasing at least some of the evolved gas from the metal tube via the open end, and wherein the lowering comprises draining cooling liquid from the metal tube via the open end.

Loading the Abstract Image...

First Claim