Canadian foundryman (1917) . 111\ commercial use. The following table shows the physi-cal properties for different annealingtemperal ures:— Maximum Annealing temp. stress tons Elongation degs. Iaiir. per sq. In. in lin As ro 15 5 545 20 (1 HC6 l7.(i(i 58 ii 1256 13S2 ) ,;; ,i l 59 ii 1 1650 53 o UM> IT brass is held too long at a temper-ature abov* 1,300 deg. P., the metal willbe ureal ly weakened. The must import-ant factor is to anneal at the lowestpossible temperature necessary to getthe desired results. Th,.
Canadian foundryman (1917) . 111\ commercial use. The following table shows the physi-cal properties for different annealingtemperal ures:— Maximum Annealing temp. stress tons Elongation degs. Iaiir. per sq. In. in lin As ro 15 5 545 20 (1 HC6 l7.(i(i 58 ii 1256 13S2 ) ,;; ,i l 59 ii 1 1650 53 o UM> IT brass is held too long at a temper-ature abov* 1,300 deg. P., the metal willbe ureal ly weakened. The must import-ant factor is to anneal at the lowestpossible temperature necessary to getthe desired results. Th,. fuse materia] required is most in-teresting, as the manufacture and load-:- of this piece is diflicult and exact-ing- There are several grades of brass,ol which is to be used for speci-fied purposes. country possesses no advantage over theother two, which permit of an output ofapproximately 6,000 per day on one au-tomatic machine. The other two meth-ods are simply matters of cost as towhich is the cheaper. In all three me-. SE( in i.\ OF TV IIiA I. FUSE SHOWING PARTS REFERRED TO thods of manufacture the product is af-terwards sized with a broach; and thepercussion pellet which is also part of Yield Metal and Purpose. n,-. per Delta Metal Time and percussion, pellets and screw plugs 44 SOO Hard Rolled Brasis - Stirrup springs i:;.440 Class A Metal—Ferrule and set- _ tin Pin . I Mm Class B Metal Rings 26 8S0 Class C Metal—Rings (alternative) i:;jioClass <; Metal—Percussion pellets (alternative bodies) 17 920 Breaking Elongation(Load, lbs. in 2 inches per 67,200 26,880 67,20044,80026,880 44,800 . ... ( dia. •Jii 10JO 30 10 Zinc . Lead Pellets and Other DetailsThe stirrup springs are stampings andhold the time and percussion pelletsfrom arming on the time needle and fer-rule respectively. The time pellet shouldarm at from L25 to 165 lbs. and thepercussion from i i to 99 lb
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Keywords: ., boo, bookcentury1900, bookdecade1910, bookidcanfoundryman1917toro
