. Railway mechanical engineer . t -5 ft ai r» ■K Welded WithOil Torch 17- Broke at Old Weld 7 Cut Out ofFrameBefore Welding TU \-T Cut Out of Fra meBefore Welding Bottom Rail Cut InOrderToSpring Frame For Welding Plan View of BlockWelded in Frame Fig. 1—Location of OM Weld on Frame of Passenger Locomotive The taps or reamers made of high-speed steel are hardenedin oil. D. M. Dulin, of the Norfolk & Western, also presented apaper, in part, as follows: We have been welding high-speed steel tips on carbon steel shanks by the electric buttwelding process. The tools to be welded have the surfacesgr
. Railway mechanical engineer . t -5 ft ai r» ■K Welded WithOil Torch 17- Broke at Old Weld 7 Cut Out ofFrameBefore Welding TU \-T Cut Out of Fra meBefore Welding Bottom Rail Cut InOrderToSpring Frame For Welding Plan View of BlockWelded in Frame Fig. 1—Location of OM Weld on Frame of Passenger Locomotive The taps or reamers made of high-speed steel are hardenedin oil. D. M. Dulin, of the Norfolk & Western, also presented apaper, in part, as follows: We have been welding high-speed steel tips on carbon steel shanks by the electric buttwelding process. The tools to be welded have the surfacesground bright and are clamped in the vise, and the currentapplied. A vise screw is operated to press the two metals to-gether as the temperature increases. The power required to New Thermit WeldOld \|«_f » New FractureOld Fracture TX7. Fig. 2—Cast Steel Frame Thermit Weld operate the machine is from y2 to 5 volts, and 8,000 to 16,000amperes. We weld tools from the smallest size up to 2 3 in., with good success. The tools are dressed after weld-ing and are hardened in an air blast or oil, as preferred. DISCUSSION George W. Grady, of the Chicago & North Western, statedthat at the Chicago shops of that road high-speed steel tipshave been welded on tire steel shanks by the oxy-acetylenemethod, tire steel being used for the metal to fill in between the high-speed steel tip and the shanks. It has been foundpossible to forge these tools to any desired shape, and to re-dress them until the high-speed steel has been entirely wornoff. The tire turning tools have met with very good success,one tool having turned 214 tires. Several members stated that while they had found it pos-sible to weld high-speed steel on tire steel shanks, it had beenfound impossible to forge the tools for the tips would in-variably come off
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
