Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 31. Figure 32Dome flanges. at X for the location of the center of the hole along theneutral line of the sheet. The hole is laid off to this fie- 76 Flanging. ure, at the proper distance from the bottom, and a J^-inchor a 5/^-inch hole put in at this point. After the mainsheet has been flanged, the corner around this hole isheated and a drift is driven through which drags themetal with it, carrying it out as shown in this the metal in being drawn out becomes very-thin
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . Figure 31. Figure 32Dome flanges. at X for the location of the center of the hole along theneutral line of the sheet. The hole is laid off to this fie- 76 Flanging. ure, at the proper distance from the bottom, and a J^-inchor a 5/^-inch hole put in at this point. After the mainsheet has been flanged, the corner around this hole isheated and a drift is driven through which drags themetal with it, carrying it out as shown in this the metal in being drawn out becomes very-thin at t2 and in this case the metal is driven back andupset to some extent, so as to thicken it up to the properamount. L± and L2 will have the same length beforeand after flanging, D being the diameter of the holewhich is put into the sheet at the beginning of theoperation. A dome flange of the style known as being curveddown to the radius of the boiler, is shown in Fig. advantage sought for in this style of dome is to keepthe thickness of the metal at T as great as possible. Itmust be remembered that t
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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
