ML20072T400
| ML20072T400 | |
| Person / Time | |
|---|---|
| Site: | Seabrook, 05000000 |
| Issue date: | 05/12/1981 |
| From: | PULLMAN POWER PRODUCTS CORP. (FORMERLY PULLMAN, INC.) |
| To: | |
| Shared Package | |
| ML20071K200 | List: |
| References | |
| FOIA-82-524 FI-126, NUDOCS 8304080077 | |
| Download: ML20072T400 (4) | |
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'Use of Automatic Welding Machines 01 metrics F1 126 4
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Based on the schedale of FW5i sutraitted to engineering from scheduling, select location & have UE&C install electrical outlet for Dimetric-Gold track !!(480 volts.)
3 phase 60 HZ) e i
!! Move tower pack into location and connect argon into power pack.
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!!! Have scaffolding or staging installed if required, and move equipment into place.
I Eculpment:
A.
TIG (one-hander) torch with accessories.
8.
Weld head i
C.
Programmer (note: remote programer must be visible to operator)
D.
Track with legs E.
Electrical cables IV.
A.
When !.0. is inaccessible, check high-low using 1/8" thick spacer.to allow use of high-low gauge.take into consideration that the insert will be 1/16* thick. After g
proper fit op has beta obtained. QA Inspector will verify marked up pipe as shown.
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1.
Using the most visible location of the selections gi 3 2) have fitter scribe measuremer;ts a.b.c.d at two locations.
After insert or backing ring has been tacke ce. have QA Inspector check Ei 2.
3l alignment using scribed marks.
5' 8.
When I.D. is accessible. verify hig sical measurement from the 1.D.
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Aj V.
Track installation shall begin af uirements (fig.3) and the process sheet have been checked to see if St thermocouples are required.
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A.
The surfg e of the pi er track feet meet the pipe must be free of paint.
5g rust.millscale.or i s that may impair electrical connection between
=I the pipe and track B.
Separate the split annular track ring b unscrewing the two captive locking screws.
Retract the three mounting feet by unse; ewing the locking screws of each foot 9
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Iocated on the track surface.
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2 C.
Set one-half of the track on top of the pipe to be welded. Line up bottom half of jl the track with the top half. screw the two pieces together.
D.
Align the inner edge of the track approximately 8 inches from the center of the weld joint.
E.
Screw down the track feet evenly until the track is tight on the pipe. be sure that
- llt the feet are touching bare metal on pipe.
F.
The alignment of the track to the weld groove should be within + 1/16" of parallel
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=e to the groove. This tolerance becomes increasimly critical at,,the pipe diameter i
decreases & travel speed increases.
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Weld head set-up should be done carefully. Do not pick up he orch cable or man poner cable.
3 A.
Loosen cam follower tension screws on weld head and s a follower arms out away from head carriage channel. After making e
voltage control a
mechanism is at the top of its' travel range, pic Id head by the front 4 rear.
E 8.
Mount head on track by pointing torch towards nt a d setting carriage channel onto track. Swing cam follower arms u ek lips and screw down cam
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follower tension screws hand tight. Jog hea and reverse several times g
and check tightness of cam follower tenst
,again adjust hand tight.
5 C.
Torch should be positioned over weld j e precision aligned by the os-g c111ator vernier slide located on top head. Make sure oscillator vernier a
slide is located in center of travel.
.I D.
In the SG positionthe tungsten she sitioned at right angles to tha radial tangent of the pipe.
j VII. The tungsten electrode is used to tr he welding current from the weld head to the work surface, 3
A.
The shape of the tungsten electrod tip is a very important factor in automated welding. ref. (fig.4)
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TORCH SET UP, fl h
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WIRE AND TLtG51EN l1 l6 Back Cap ALIG W.ENT
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Gasket Seal NOTE: To insure proper assembly; gas lense, r
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A seal inust be installed prior to gas cup or
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Gas Lense Collet Body.
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Y?d2 WireGuideBlock Gas Cup #10 or #12 y
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5 Tungsten stick o'ut 1/4" to 3/4*
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Wire nozzle.035 045, cit
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Tungsten to wire tip 4-e 1/16* to 3/32" l
0lSTANCE 1/4" to 3/8" l
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The distance that the tungsten electrode exte he gas cup lip should be y
approximataly is inch to 3/4 inch. The tungs be tight in the torch and j$
no wobble or looseness present.
l; V!!!. Using the (fig.5) establish the front end head step up.
ij Align tungsten to center of insert and t
, Adjust track to center of insert.
', E IX.
The welding supervisor will review amaters with the welding operator
- S of each machine, X.
The remote programmer will be s a weld will be stenciled by the welding ja operator or operators as desc ullman.Higgins Procedure (X.9).
The welding operator is def e person or persons that have been qualified.
who watch and interpret we a
s XI.
Using a weld rod requi g.6) obtain wire spools from site rod rooms.
3 Check to see that t wire is scribed with the size. type, and heat of material.
I Return to rod room ed in P.H J5.VI!!.3 (latest Rev.)
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XII Before weld out is begun, adjust front end head alignment of machine.
(Ref. VI of the FI)
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