Metal Y-tube simultaneously directs argon streams over weld areas on both sides of tubes being joined along a line on their outer periphery. The device is advanced along the junction in step with the welding operation

Carrithers, K. V.

Kelley, W. B.

English

NASA Technical Reports Server

April 1966	 Brief 66-10155 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Simple Device Facilitates Inert-Gas Welding of Tubes 
The problem: 
To provide a simple device that will maintain an 
argon, or other inert-gas, atmosphere over the weld 
areas on two tubes being joined along a line on their 
outer peripheries. Separate supply hoses which have 
been used to provide an argon atmosphere over both 
sides of a weld seam formed along contiguous tubes 
are awkward to handle. 
The solution: 
A metal Y-tube that simultaneously directs streams
of argon from a single supply hose over the weld 
areas on both sides of the workpieces. 
How it's done: 
Three pieces of pliable metal tubing (e.g., 3/16-inch 
copper tubing) are soldered or brazed in a Y-config-
uration. The stem of the Y is inserted into the argon 
supply hose, and the other two branches are bent so 
that the outlet tips will be in contact with the junc-
tion of the tubes being welded. The device is advanced 
along the junction in step with the welding operation. 
(continued overleaf) 
This document was prepared under the sponsorship of the National 	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States 	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19660000154 2020-03-11T17:29:44+00:00Z
Note:	 Patent Status: 
Inquiries concerning this innovation' may be di-	 No patent action is contemplated by NASA. 
rected to:	 Source: W. B. Kelley and K. V. Carrithers 
Technology Utilization Officer 	 of North American Aviation, Inc. 
Marshall Space Flight Center 	 under contract to 
Huntsville, Alabama, 35812	 Marshall Space Flight Center 
Reference: B66-10155
	
(MFS558) 
Brief 66-10155	 Category 05


Simple device facilitates inert-gas welding of tubes

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