Steam boiler explosions, in theory and in pactice; . Fig. 17.—Defective Welding. tact in abutting surfaces between which particles ofscale and superficial oxidation may interpose. Thegrain of the iron, as illustrated in the accompanyingengraving, is broken at such junctions, and it is difficult tosecure a good weld, and next to impossible to determineuntil it actually breaks, whether it is seriously workmanship is often exhibited most strik-ingly by the distorted forms of rivets, revealed after ex-plosion has caused a fracture along the seams, or whenthe yielding of the weake
Steam boiler explosions, in theory and in pactice; . Fig. 17.—Defective Welding. tact in abutting surfaces between which particles ofscale and superficial oxidation may interpose. Thegrain of the iron, as illustrated in the accompanyingengraving, is broken at such junctions, and it is difficult tosecure a good weld, and next to impossible to determineuntil it actually breaks, whether it is seriously workmanship is often exhibited most strik-ingly by the distorted forms of rivets, revealed after ex-plosion has caused a fracture along the seams, or whenthe yielding of the weakened seam has resulted in an DEFECTIVE CONSTRUCTION. 107 explosion. The following illustrations of a variety ofcases of such distortion, all taken from a single boiler,*show how very serious this kind of defect may be. Itis not to be presumed that such carelessness, or worse,as is here exemplified, is to be attributed to the builderhimself, but rather to the fault of the workmen care-fully concealing their action from the eye of the foremanor insp
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectsteambo, bookyear1887
