Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . diameterequal to the set of the flange and bent so as to give therequired size and angle to the sheet. A mark is placedon the die. Having located the die to suit this mark andlaterally to suit the lines laid out on the sheet, the dies ofthe machine E and F, Fig. 50, are brought together andthe sheet is flanged. In Plate 2 will be seen a crown bar T iron, which isbent to suit the curvature of the crown sheet and alsoone above it to suit the curvature of the sheet. Refer-ring to Fig. 52, D-l a
Locomotive boiler construction; a practical treatise for boilermakers, boiler users and inspectors .. . diameterequal to the set of the flange and bent so as to give therequired size and angle to the sheet. A mark is placedon the die. Having located the die to suit this mark andlaterally to suit the lines laid out on the sheet, the dies ofthe machine E and F, Fig. 50, are brought together andthe sheet is flanged. In Plate 2 will be seen a crown bar T iron, which isbent to suit the curvature of the crown sheet and alsoone above it to suit the curvature of the sheet. Refer-ring to Fig. 52, D-l and D2 are cast iron dies, R being therequired radius. The iron is heated, placed between the 94 Flanging. ?dies and forced together by the hydraulic pressure. Thesedies are rough castings except at F where they areplaned. In conclusion a few remarks on the size of the diesmay be of value in order to turn out the finished productto the correct dimensions. From a large number of ex-periments it has been found that the contraction of sheets,in cooling, from the usual red heat of flanging, is three-.
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Keywords: ., bookcentury1900, bookdecade1910, bookidlocomotivebo, bookyear1912
