Atmospheric Contamination Associated with Inert-Gas-Shielded, Consumable Electrode Welding Page: 2
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INTRODUCTION
REPORTED TO BE ASSOCIATED ws TM AN IMERT-GAS-SMIELDED COMSUABLE ELECTRODE ARC
COMTROLS MERE MADE.
TYPE OF OPERATIC*
FRO A utDinG MACMINE OPERATED AT 210 AMPERES uw:cu PRODUCED A CURRENT DENSITY
10 FT. CEILinaS ANO VERE tK'.MCO.
n
APPARENT EXCESSIVE COncENTRAroNS Or ATMOSPMERIC CONTAMINATION unecu UERE
EXMAUST DUCT oPEnuG had an AREA or APPROXIMATELY 0.2 so. FT. with a FACE VELOCITY
or ABOUT 166,000 AMPERES MCA SQUARE inch or WELDinG WIRE.
WAS MADE or TME CONCENTRAT IONS or HETAL FUME ANO GASEOUS PRODUCTS OF TML OPERATON
WITH TME EXCEPTIOn or AM OFFICE AREA, A GLASS SHOT AnD TME “EtDinG BOOM, WHICH MAO
—
Two FLEKIDLE ExMAUST DUCrS VERE SUsPENDED FRO TME CEiLinG or TME UELDIuG
TME UELDG BOOM WAS APPROXIMATELY 15 FT. BY 20 FT. Br 10 FT. HIGH, WITH A
This investigation was COnCERMED with an IMERT-GAS-SMIELDED ARC UELDIG
OPERATo usno A O.045" DIAMETER, TTPE 347 STAIMLESS STEEL CONSUABLE ELECTRODE
LONG BY 100 FT. MIDE, WITH MOST OF TME eustDimG OPEn TO TME MO FT. PEAK BOOT
AMO MAO AH AKA OF 0.5 SO. FT. WITH A FACE VELOCITY OF 1350 FP; THE OTHER
TuE IMEer GAS MIXTURE, CouPosEo OF 95 - 1005 ARGON WITH 5 TO 0% OxrGen, WAS
17 - 19% CIIAOHI UM, 9 - 125 NICKEL, 0.85 NIOBIUM (CoLusu) ANO 0.085 CAHOON.
AS UELL AS THE SPECTRU or ULTRAVIOLET RADIAToN. Rs COMMEND AT I OKS FOR MECESSARY
WELDING OPERATON UERE STUDIED TO EVALUATE THE POTENTIAL MEALTH MAZARDS. A STUDY
6 FT. DOOR 1O FT. HIGH opEuINC INTO THE MAIN BA* OF THE euiLDiNG. A CANVAS
SUPPLIED TO THE tonch at a bate or 50 cubic FEET PER MOUR. PovER was SUPPLIED
DUCTS UERE COmECTED TO A cmaon BLOWEB. OuE EXMAUST DUCT OBE MI NG WAS EMLARGED
CURTAIM WAS HUNG OVEN THE ooon OBEMING. TuE MAIN BUILOING WAS APPROXIMATELY 200 FT.
BOOM IN SUCH A MAMMER THAT «K» COULD BE PLACED AT THE WELDING OPERAroN. THE
FEO THROuGM THE TOUCH AT A BATE OF 266 INCHES PER MIMUTE. This ELECTRODE CONTAINED
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Adley, F. E. & Gill, W. E. Atmospheric Contamination Associated with Inert-Gas-Shielded, Consumable Electrode Welding, report, July 25, 1955; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc1254057/m1/2/: accessed May 11, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.