Hartford Steam Boiler Inspection and Insurance Company · Hartford, Ct. : Hartford Steam Boiler Inspection and Insurance Co · leaf 179
merely a deep scratch.While most scratches will not cause the formation of a line of thepowder, there have been a few cases where a deep scratch has giventhe same reaction as a crack. The application of emery cloth will quicklydecide the question of whether a crack exists. The Magnaflux method will… … Figure 5—Magnaflux method applied to a shaft to determine the extentof a crack which had been detected by means of the unaided eye.The magnetizing coils are shown at the right. _^939 THE LOCOMOTIVE 169 emery cloth. For instance, in the web of a crankshaft which was knownto have been exposed to…
Locomotives · Steam-boiler explosions
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