How XINXIN WELDING Helped a Collision Repair Workshop Reduce Panel Distortion and Better Preserve Corrosion Protection Introduction Modern vehicles are engineered with increasingly thin, galvanized high-strength steel panels to reduce weight while improving corrosion resistance. These materials perform exceptionally well on the road—but they also demand greater precision during...
When a new batch of refrigeration units repeatedly failed the final pressure test, the production manager immediately suspected the brazing rods. The joints looked clean. The filler metal had melted evenly. Nothing appeared unusual. Yet nearly one out of every ten copper-to-aluminum joints developed leaks during helium leak testing. Replacing the brazing rods didn't solve the problem. Chang...
Is QJ201 Aluminum Brazing Flux Corrosive? The short answer: QJ201 is a product designation, not a universal formula. Corrosion risk depends on the actual chemistry of the flux and the residue it leaves after brazing. “Will the flux residue corrode the aluminum after brazing?” This is one of the first questions customers ask us when testing QJ201 aluminum brazing flux. It is a reasonabl...
