| 摘要 |
There is provided a method for inhibiting corrosion at elevated temperatures of a nonnesting accordion folded or wound corrugated thin metal strip. The strip is corrugated with a longitudinally running series of peaks and valleys by passing the strip through a set of corrugating gears, each of the corrugations including one longitudinally extending displacement deviating from and returning to an imaginary line extending between the longitudinal marginal edges of the strip. The corrugations are characterized further in that the deviation extends in the direction of movement of the strip through the corrugating gears and is first to enter and exit from such gears. This places the maximum of the deviation in compression which has been found to minimize corrosion, e.g., from the pollutants contained in the exhaust from an internal combustion engine. |
