Welding; theory, practice, apparatus and tests, electric, thermit and hot-flame processes . the double-coatedpiece the brass was very distinct. It must, therefore, be apparentthat the joint we obtain is not simply a surface adhesion, but anactual anchoring of the filling material to the adjacent faces ofthe fracture.^ Tests Made by Riehle Bros. Specimens 6 x 6 x 24 long. Cast iron. Supports 20 apart. Load appliedat center of specimen. Marked Breaking strength in lbs. After brazed I234 5 155,280178,700194,440168,700163,220 131,000180,860187,750178,310162,450 Special information. 164 WELDINGTest
Welding; theory, practice, apparatus and tests, electric, thermit and hot-flame processes . the double-coatedpiece the brass was very distinct. It must, therefore, be apparentthat the joint we obtain is not simply a surface adhesion, but anactual anchoring of the filling material to the adjacent faces ofthe fracture.^ Tests Made by Riehle Bros. Specimens 6 x 6 x 24 long. Cast iron. Supports 20 apart. Load appliedat center of specimen. Marked Breaking strength in lbs. After brazed I234 5 155,280178,700194,440168,700163,220 131,000180,860187,750178,310162,450 Special information. 164 WELDINGTests Made by Riehle Bros. Marked Area in Ultimate inlbs. Remarks No. I. Brazed No. 2. No. 3. Solid .450•439•439 19,220 20,57022,730 Broke outside weldBroke outside weldBroke Two other tests by the same company showed increases ofI and 6 per cent, for mended bars. Of three tests by Lewis Foundry and Machine Co., the j&rstshowed an increase in strength of i, and the other two a decreaseof 14 and 29 per cent. Two bars tests by Cramps broke outside the Fig. 88.—Broken arm that was made stronger than originally by the ferrofixbrazing process. The process is now used for all-sized repairs, small or verylarge. By accident a spoke was broken from a fly-wheel, 19 feet indiameter, 48 inches width of rim, weighing 21 tons. A newwheel would have cost $2700 and would have involved two orthree months delay. The Pich process was applied; the broken BRAZING AND SOLDERING 165 spoke was brazed into place, and $250 charged and paid for thejob. The actual cost of doing this work was less than $50/ Figure 88 shows a break of an important appliance that canbe mended by this process. BRAZING AND SOLDERING Brazing and soldering are processes which are much likewelding and which often shade over into welding. The brazingof brass is welding, except that the metal is not pounded together,but melted. The definitions for soldering and welding are givenin the first chapt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1910
