. Official proceedings . Welding Rolls. Mandrel in Finishing side of welding furnaces in N. T. Co. Mill, McKeesport,showing cooling tables in detail. 190 Proceedings Railway Club of Pittsburgh. 110s between the safe end and body tube, it is evident that there isagain a risk of overheating- the one before the other is sufficientlyheated to weld. If the body tube is returned to the furnace whilered hot and the safe end is at the same time a gauge or twoheavier, there is, of course, all the more chance of crystallizingor burning the body tube at or near the weld. Taking unnecessaryrisk
. Official proceedings . Welding Rolls. Mandrel in Finishing side of welding furnaces in N. T. Co. Mill, McKeesport,showing cooling tables in detail. 190 Proceedings Railway Club of Pittsburgh. 110s between the safe end and body tube, it is evident that there isagain a risk of overheating- the one before the other is sufficientlyheated to weld. If the body tube is returned to the furnace whilered hot and the safe end is at the same time a gauge or twoheavier, there is, of course, all the more chance of crystallizingor burning the body tube at or near the weld. Taking unnecessaryrisks of this kind often explains subsequent failures, which shouldnot be charged tip to the flue maker. It is not unusual for a flue welder who has never handledsteel to have trouble for a few days. Remembering the abovepoints, and using his experience to the best advantage as to thecondition of his furnace, the character of the flame, temperature, the average man will soon be able to do equally reliable workwith steel as with charcoal iron, as the experi
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