![GM Confidential
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)
8/13/2015 – Karthikeyan D
9
3.Current Calibration Methods – CURRENT GAUGE CHECKER
Note : Authorized person to be trained for changing TR values .](https://image.slidesharecdn.com/29c49e35-d954-42a3-9458-9db0d91553f8-160419055957/85/1-Weldiing-Parameter-Basics_WCS-Checking-Gauges-Pendants-9-320.jpg)
1.Weldiing Parameter Basics_WCS , Checking Gauges , Pendants
- 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
- 2. GM Confidential8/13/2015 CONTENTS 1. Weld parameters basics . 2. Force Gauge Analog Checker 3. Current Gauge Checker 4. Weld Display pendant 5. Teaching Display pendant 2
- 3. GM Confidential 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 . 8/13/2015 – Karthikeyan D 3
- 4. GM Confidential 8/13/2015 – Karthikeyan D 1.GWS 1 A – Global Weld Standards – Snap shot : 4
- 5. GM Confidential 8/13/2015 – Karthikeyan D 5 1.GWS 1 A – Global Weld Standards – DT
- 6. GM Confidential 1.GWS 1 A – Global Weld Standards – Tables selection method Second thin 6
- 7. GM Confidential 8/13/2015 1.GWS 1 A – Global Weld Standards – List of tables panel type FSC ( Bare / Coating ) Weld Controller Spec 7
- 8. GM Confidential 8 8/13/2015 – Karthikeyan D 8 2.Force Calibration Methods – ANALOG FORCE GAUGE CHECKER Air Regulator should be adjusted Until standard pressure display in Force Gauge checker
- 9. GM Confidential 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) 8/13/2015 – Karthikeyan D 9 3.Current Calibration Methods – CURRENT GAUGE CHECKER Note : Authorized person to be trained for changing TR values .
- 10. GM Confidential 8/13/2015 – Karthikeyan D 10 4.Weld Display pendant Weld display pendant is used as a handy device in which the running parameters can be displayed
- 11. GM Confidential 5.Weld Teaching pendant 11 Weld teaching pendant is used as a handy device in which the Weld parameters can be checked and also teach to timer . 8/13/2015 – Karthikeyan D