Does I-CAR approve of S-TRSW?
The answer is: It depends on what the car manufacturers write in their repair manuals. I-CAR is giving training and recommendation based upon what the repair manuals are saying. Recommended Techniques with S-TRSW First, do not grind off E-coating between new panels. Use zinc rich “Weld Through Primmer” in between new and existing old panels. Grind outside surface from non-conductive E-coating. But do not grind off the conductive zinc coating. Always warm up the tips 3 – 5 times on scrap metal before starting any welding job. Then weld 30% more welds then OEM welds. Make shallow welds and always look for the red glow. Black welds indicates too low temperature with no penetration. A welding cycle consists of Positioning – Squeeze – Weld – Hold; which takes about 6 seconds. Key Features Today’s systems have three key features. First, repair technicians can now spot weld through the e-coating in between the panels, keeping the life-time corrosion protection intact. The zinc coating seals a
