1. GM Confidential
General Motors International Operations
GMIO ME BODY (TCI)
Training :
Weld parameter Basics / checking Gauges / pendants
(Day 1)
1
Karthikeyan D / Welding Engineer
Date:- 11th – August 2015

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CONTENTS
1. Weld parameters basics .
2. Force Gauge Analog Checker
3. Current Gauge Checker
4. Weld Display pendant
5. Teaching Display pendant
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1.GWS 1 A – Global Weld Standards Observation Points :
1. Weld Parameter selection is based on four important values.
• FSC ( Faying Surface Condition ) Example : BB,BG,GG { B:Bare (Non coated) ,G – Galvanized }
• DT ( DeterminingThickness ) Example : 0.8 , 1.2 – 0.8 mm & 0.8 , 1.2 , 1.0 – 1.0 mm
• Weld controller Spec . Example : HFDC ,AC 60 HZ , AC 50 HZ {High Freq Direct Current}
• Panel sheet type . Example : Conventional Steels / AHSS {Advance High Strength Steel} .
2. Based on Schedule Tables from GWS 1A : 2-1 to 2-18 ,Weld Parameters are entered in WCS .
3.Welding Performed in Real condition , based on the Quality of Weld and Spatter condition -
Weld parameters are changed / Updated in WCS to achieve Weld Quality .
Examples : Current ,Weld time values change for Spatter , ColdWeld , Spot Indentation .
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1.GWS 1 A – Global Weld Standards – Snap shot : 4

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1.GWS 1 A – Global Weld Standards – DT

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1.GWS 1 A – Global Weld Standards – Tables selection method
Second thin
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1.GWS 1 A – Global Weld Standards – List of tables
panel type FSC ( Bare / Coating ) Weld Controller Spec
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2.Force Calibration Methods – ANALOG FORCE GAUGE CHECKER
Air Regulator should be adjusted Until standard
pressure display in Force Gauge checker

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Current Gauge Tool Current Calibration
• Initial Transformer Ratio set up 17 (Example Value) in Pendant to TC .
• Current Gauge cable is placed in the area between Weld Electrodes
• Weld operation is performed by Electrodes.
• Weld Current Value displayed in visible screen like 10,410 A( Example)
• TR change to 19 , Current gauge Reading 10,012 A which is spec Value .
[Trans Ratio is changed in pendant ( TR increase , Current Decrease)]
• Repeat Checking process and to check for 10,000 A reading in Gauge
• Proceed for Next Gun to calibrate Weld Current .
Weld Electrode – Current calibration done to Weld Elec Specification Current of 10 KA (10000 A)
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3.Current Calibration Methods – CURRENT GAUGE CHECKER
Note : Authorized person to be trained for changing TR values .

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4.Weld Display pendant
Weld display pendant is used as a handy device in which the
running parameters can be displayed

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5.Weld Teaching pendant
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Weld teaching pendant is used as a handy device in which the
Weld parameters can be checked and also teach to timer .
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Thank you
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