MECHANISM ANE QUALITY CONTROL OF HOT-DIP Pb-Sn ALLOY COATING OF DOUBLE-WALL BRAZED TUBES

This article, using the diffusion theory in solid metals, discusses in detail the mechanism of hot-dip Pb-Sn alloy coating of the double-wall brazed tube, and analyzes the existing defects in the production of pb-Sn hot-dip coated double-wall brazed tube in line with the theory on Pb-Sn alloy corrosion resistance.