. Marine Engineer . Fig. 10. to heat the surrounding plate by means of the blow-pipeflame to counter tct, as fat tins thai might be set up by the intense local heat. Naturally it it werepossible it would be better to properly anneal the platedeall with. This process has .1!- ??<;??) very usefully em-I in the cutting out of defective and damaged plates,11 the blow-pipe melting and thus cutting agroove about three i6ths in. wide, in much the same. .SI, THE MARINE ENGINEER AND NAVAL ARCHITECT. October i, 1907- as would be done by a band saw, the separation being quiteas cleanly and accurately
. Marine Engineer . Fig. 10. to heat the surrounding plate by means of the blow-pipeflame to counter tct, as fat tins thai might be set up by the intense local heat. Naturally it it werepossible it would be better to properly anneal the platedeall with. This process has .1!- ??<;??) very usefully em-I in the cutting out of defective and damaged plates,11 the blow-pipe melting and thus cutting agroove about three i6ths in. wide, in much the same. .SI, THE MARINE ENGINEER AND NAVAL ARCHITECT. October i, 1907- as would be done by a band saw, the separation being quiteas cleanly and accurately done and in much less time thanby the ordinary methods of hand cutting. The followingare results of tests, made in June last, from samples takenfrom a plate welded by the Oxy-Acetylene process, and arethe same as those I gave in a paper read at the EngineeringConference of the Institution of Civil Engineers. OXY-ACETYI ENE WELDING. •5« V u m u < S3 0 0 U. U §.s Hg, Extension in 4 cent. in. in. in. Not annealed . 15 ?62 •93 22-85 24-5 3° -Solid Plate. Annealed i-5 ?62 •93 22-35 24-0 Extension in 8 ins. per cent. Not annealed . i5 •62 •93 22-9 24-6 28 | Broke away rfrom the29) weld. Annealed i-5 ?63 •945 22I 23-3 ^YWWtWVWWWvA Fig. 12 Cold annealed .... 1800Vnnealed 180° They show not onlj thi fncien, | t the weld, bu1 the ductility oi tl,. surrounding metal in way oi theweld has .in
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondon, bookyear190
