. Forging of iron and steel, a text book for the use of students in colleges, secondary schools and the shop . on having a small bowl. It is best firstto add the borax; and whenit starts to fuse and run,to add the spelter; later alittle more flux when thespelter gets hot. A wireshould be used to poke thespelter into the proper work should heatslowly and evenly. As soonas the spelter has run, thepieces should be taken fromthe fire and allowed to the pieces are of such anature that the unused spel-ter can be rubbed off beforethe pieces are cool, thisshould be clone, as it is mu
. Forging of iron and steel, a text book for the use of students in colleges, secondary schools and the shop . on having a small bowl. It is best firstto add the borax; and whenit starts to fuse and run,to add the spelter; later alittle more flux when thespelter gets hot. A wireshould be used to poke thespelter into the proper work should heatslowly and evenly. As soonas the spelter has run, thepieces should be taken fromthe fire and allowed to the pieces are of such anature that the unused spel-ter can be rubbed off beforethe pieces are cool, thisshould be clone, as it is much easier to remove thehot spelter than it is to file off the cold. Brazing furnaces fired by gas can be obtained on themarket, or a very serviceable one can be made out offire-brick or tile. Fig. 159 shows one made from smallcircular tile. The gas torch is made up of regular stockfittings. The gas flame heats the tiles intensely hot, theheat being reflected on the work, to heat it and melt thespelter and flux. The flux and spelter are added in asimilar way to that followed when a forge fire is Fig. 159 124 FORGING OF IRON AND STEEL
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
