. Railway mechanical engineer . n surface as shown at A in Fig. 7. A , about 1 in. wider than the frame, is then fastened to thebottom. From this as a basis the electric welder builds up the fullwidth of the frame first on one side and then on the other asshown at H. After the V is filled on both sides, y%-. roundbars about 2 in. longer than the full width of the V are welded onthe outside as reinforcement, starting at the bottom and buildingup (see C, Fig. 7). The very fact that these bars are roundenables the operator to easily and successfully weld them in bybeing able to get in
. Railway mechanical engineer . n surface as shown at A in Fig. 7. A , about 1 in. wider than the frame, is then fastened to thebottom. From this as a basis the electric welder builds up the fullwidth of the frame first on one side and then on the other asshown at H. After the V is filled on both sides, y%-. roundbars about 2 in. longer than the full width of the V are welded onthe outside as reinforcement, starting at the bottom and buildingup (see C, Fig. 7). The very fact that these bars are roundenables the operator to easily and successfully weld them in bybeing able to get in around them. The completed weld is shownat D. A great nimibcr of shops use the electric-welding process verysuccessfully in fireboxes, welding cracks, applying patches, apply-ing new side sheets and J4door sheets, filling up corroded orworn places in all sheets, welding mud rings, welding in tubes inback-tube sheet, welding cracks in bridges and checks in flangesof sheets. In welding in tubes, the tulics should be applied the. Fig. 8—Broken Cylinder Repaired by Arc Welding one shop is approximately $30,000. All savings noted above arenet savings above cost of labor, material and electric current toperform the operations. Fig. 9—Cylinder Prepared for Welding same as if no welding was to be done, .\fter they are appliedthe sheets should be cleaned and roughed before welding. Careshould be taken that the voltage is not too high. A voltage of64 with 125 amperes gives good results. Welding tubes is mosteconomical in good water sections where two or three years maybe expected between renewals, but it pays to weld them if onlyone year is expected of them, as it saves engine-house engine came to the shops with left cylinder broken overthe three steam ports, a space about 36 in., with the cylinder bush-ing still intact, as shown in Fig. 8. The cylinder was drilled andtapped for ,2-in. studs, in order to provide, through the steel oriron studs, something suitable on which
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
