N3904026Q6176V222 Attachment 2_DWG - 6176V222_v223 - ELECTRODES_Redacted.pdf
PDF 127 KB Posted
- Attached to
- Welding Tungsten Electrodes
- Solicitation number
- N3904026Q6176V222
About this file
This is a Welding Engineering Authorization (WEA) document from Naval Shipyard Portsmouth that establishes technical specifications for thoriated tungsten electrode use. The document, WEA 138-006-19 REV. H, provides detailed dimensional and geometric requirements for Class EW TH-2 thoriated tungsten electrodes used in welding operations.
The specifications include two electrode configurations with defined length, diameter, and taper requirements. For automatic welding applications, electrodes must be 6.5" to 7" in length with a 1/8" diameter and a taper measuring 3/8" to 1/2". For manual welding, electrodes must be 3" to 3.5" in length with a 3/32" diameter and a taper measuring 9/64" to 3/8". Both configurations require a maximum 3/64" square or rounded contour at the tip, with sharp points explicitly prohibited. The taper geometry must be symmetrical and may be machined on both ends. Critical restrictions include a prohibition on machining or grinding/filing of thoriated tungsten at Portsmouth Naval Shipyard, and all measurements are specified in inches with tolerances based on referenced standards.
View the file
Other files
On GovTribe
Work with this file
- Download the original file
- Contacts named in this file
- Similar government files
- Ask GovTribe AI about this file
Text version
WELDING ENGINEERING AUTHORIZATION
NAVSHIPYD-PTSMH-4854/120 (REV 5-02)
CODE 138 DIVISION INSTRUCTION #004
TITLE:
SHEET 5 of 7
WEA 138-006-19 REV. H
Thoriated Tungsten Use
Figure 1
6.5" - 7" l 3�"-In" -Jt---------
1/8"
I
Class EW TH-2
6.5" - 7" for automatic 3" - 3.5" for manual l 9/64" - 3/8"
3/32" Class EW TH-2
I
Notes:
3/64" Max Square or
+ Rounded Contour; Sharp -- Point Prohibited
-i
3/64" Max Square or
+ Rounded Contour; Sharp -- Point Prohibited
-i
1) All units are in inches.
2) There shall be no machining or grinding/filing of thoriated tungsten at PNS.
3) Identical taper may be machined on both ends.
4) Taper geometry based on tolerances of reference (d).
Figure 2 l_
ELE
C
TR
o o
E o----T-U-NG_S_T -EN--�
DIAMETER (_ ELECTRODE �
JDIAMETER AT TIP
*ensure specified angle is as shown and not one-side only
File details come from the government source that posted it. Updated .