. The Iron and steel magazine. e lines of junction between Thermit steel and cast most important application of the Thermit process isfor making a continuous rail. The process having been broughtto a high state of perfection in Europe before coming here, therewas little room for changes in practice. About 30 differentcities are investigating the process in actual operation and about5,000 joints have been put in up to date. All roads recog- 220 The Iron and Steel Magazine nize in the Thermit process the best and simplest means of join-ing rails for electric traction, as long as
. The Iron and steel magazine. e lines of junction between Thermit steel and cast most important application of the Thermit process isfor making a continuous rail. The process having been broughtto a high state of perfection in Europe before coming here, therewas little room for changes in practice. About 30 differentcities are investigating the process in actual operation and about5,000 joints have been put in up to date. All roads recog- 220 The Iron and Steel Magazine nize in the Thermit process the best and simplest means of join-ing rails for electric traction, as long as care is taken to do smalland things right. Competitors in the field of rail weldingmay send out fanciful blue-prints about broken joints, to createunfavorable impressions, but such manoeuvers prove nothingbeyond the fact that they admit the success of the Thermit pro-cess in this field. Some tests may be of interest. A heavy double trolleycar was taken over a welded joint with supports 13 feet away,without breaking Welded Rudder Shoe, Tugboat Schenck To decide whether the head of the rail got softer, microm-eter caliper measurements were taken of depressions made underequal blows of a steam hammer, by a blunt tool hardened at thehead, J inch in diameter. One-half inch away from the joint the depression was Three feet away from the joint the depression was The electric conductivity of the Thermit joint is recognizedto be higher than that of the rail, due to increase of area, and ispermanent. 77/1- llicrmit Process in American Practice 221 That steel foundries should liave been the first to recognizethe possibilities of liquid steel that can be produced anywherein half a minute goes without saying. There are already severalof the largest with whom Thermit is as much a necessity as foun-dry sand. Some prefer — for no apparent reason — not todisclose the fact that they repair faults in castings by Thermit,but all can openly admit that th
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectiron, bookyear1898
