. Railway mechanical engineer . care should be taken to avoid all strain in cooling, as theframe is liable to break in someother location. In our shop weuse the oil furnace and the electricprocesses of welding. Fig. 1 showsan oil weld made on a passengerengine. The upper and lower railswere welded at the same of the fracture was cutaway to leave both ends block was finished all aroundon the inside to make a good fitbetween the rails of the the frame had been jackedapart three-quarters of an inch theblock was inserted and caulkedwith an air hammer all around tok
. Railway mechanical engineer . care should be taken to avoid all strain in cooling, as theframe is liable to break in someother location. In our shop weuse the oil furnace and the electricprocesses of welding. Fig. 1 showsan oil weld made on a passengerengine. The upper and lower railswere welded at the same of the fracture was cutaway to leave both ends block was finished all aroundon the inside to make a good fitbetween the rails of the the frame had been jackedapart three-quarters of an inch theblock was inserted and caulkedwith an air hammer all around tokeep out any dirt or scale thatmight accumulate at this point. Abrick furnace was built around theframe with a two-inch burners were located on eitherside of the frame and the framebrought to a welding heat. Afew of the bricks were then re-moved and the frames rammed onboth sides, after which the brickswere replaced and the frame al-lowed to cool off. This frame wasthe latter part of December, 1914, and is still in. weldedservice. Fig. 2 shows the method of welding a locomotive frameby the electric process. The fracture was cut away to anangle of 45 deg., and the opening filled in to the full sizeof the frame. It was then reinforced, as shown in the illus-tration, with strips of ?s-in. round cold-rolled steel on thebottom and sides, this steel being welded into place directlyover the crack. The top and inside of the frame could notbe treated in this manner on account of a heavy cross bracethat was located at this point. The following is from a paper on this subject by I\ of the Norfolk & Western: In making or repairinglocomotive frames the first essential is having the necessaryfacilities to handle the heavy frames which are constantlyincreasing in weight. The blacksmith should have at alltimes sufficient experienced help so that the job can be prop-erlv and quicklv done. Welding frames with Thermit, oilor by the electric process, has proved satisfactory
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
