The Works Of Messrs. Schneider And Co.

SIEMENS-MARTIN STEEL DEPARTMENT: ANALYSIS OF COMPRESSED STEEL INGOTS. 41 pressed steel are almost too well known to require énuméra- tion; among them are included total elimination of gases and conséquent absence of blow holes ; the possibility of manufacturing round ingots, which cannot be obtained sound, if cast in the ordinary way in ingot moulds ; this is a great advantage for forging gun tubes and shafts. There is a greater homogeneity of the varions parts of the accompanying Table, which contains the Chemical analyses made of it ; tlie results show clearly the great homogeneity of the steel. The French Navy, after varions comparative trials made with pieces taken from ordinary ingots and from com- pressée! ingots, have autborised tlie use of the latter for the manufacture of guns and marine forgings. Since TABLE OF ANALYSES OF THE FIRST FLUID COMPRESSED STEEL INGOT CAST BY MESSRS. SCHNEIDER AND CO. The Proportions are given in One Hundred Thouscmdths. Index No. Carbon. Silicon. Sulphur. | Phosphorus. Manganèse. Index No. 1 Carbon. Silicon. Sulphur. Phosphorus. Manganèse. 1 250 i 82 27 24 620 57 250 82 30 24 630 2 270 116 35 23 640 58 250 82 28 25 (>30 3 280 152 33 22 620 59 260 82 32 29 620 4 550 222 50 28 540 60 290 116 35 33 630 5 280 128 32 25 <>20 (il 320 116 46 33 (540 6 250 93 35 23 610 62 300 116 34 33 (530 7 250 82 35 23 620 (53 250 82 34 28 650 8 260 82 27 24 620 64 250 82 30 25 630 9 260 105 35 21 640 65 240 82 26 23 660 10 310 128 28 20 630 66 270 82 29 26 C)40 11 350 210 28 28 600 67 320 93 43 33 650 12 420 .303 46 33 540 68 330 105 50 37 630 13 380 210 35 32 540 69 310 93 40 3S (>40 14 270 93 35 23 620 70 270 82 35 32 630 15 260 82 30 25 630 71 240 82 28 25 640 16 260 82 35 25 620 73 350 93 48 42 650 17 250 116 26 20 630 76 340 116 4(5 41 Ö50 18 370 128 66 39 560 78 270 82 35 32 630 19 350 233 46 33 G00 79 240 82 28 26 630 20 3(50 128 55 33 600 81 290 93 38 33 620 21 260 105 30 24 630 82 270 82 34 31 630 22 260 82 ! 32 24 640 83 240 82 26 28 630 23 260 82 28 23 630 84 300 105 45 33 G40 24 270 93 26 23 (>30 85 270 82 28 32 620 25 310 93 42 26 630 630 86 240 82 27 32 630 26 320 163 46 33 87 270 93 40 33 620 27 310 93 36 26 (>40 88 260 82 34 32 620 28 260 105 35 25 630 89 240 82 30 32 640 29 250 82 32 18 630 90 260 82 34 37 630 30 270 82 26 23 (>40 91 270 82 30 32 640 31 270 116 28 20 640 92 240 82 28 32 640 32 280 116 27 30 640 93 250 82 35 39 610 33 280 163 46 26 640 94 270 82 30 32 620 34 290 105 35 2(5 650 95 240 82 33 30 620 35 260 105 30 20 640 96 260 82 35 28 630 36 260 82 .30 20 650 97 240 70 30 32 630 37 260 82 3-1 21 (>40 !>8 240 82 35 32 640 38 260 116 26 25 640 99 240 82 28 25 630 39 280 105 33 26 620 100 240 82 28 28 650 40 280 128 46 26 640 LOI 270 82 35 26 640 41 280 116 35 26 650 102 250 82 34 29 650 42 250 105 32 25 640 103 240 105 32 23 620 43 250 82 30 25 620 104 230 116 20 23 640 44 250 82 34 20 640 105 230 93 26 25 650 45 250 82 26 24 640 106 250 82 30 28 (>40 46 280 93 35 26 650 107 250 93 25 23 640 47 300 105 46 26 650 108 220 93 24 20 650 48 280 93 2$) 26 640 109 230 105 22 25 630 49 250 82 2« 25 640 110 230 105 22 25 630 50 250 87 29 25 630 111 250 93 21 25 640 SI 260 82 35 25 640 112 2S0 93 19 25 630 52 260 82 30 26 630 113 240 93 22 25 640 53 300 93 35 32 620 114 240 93 23 25 640 54 280 93 4G 29 630 115 240 93 23 25 640 55 56 280 260 93 82 30 30 31 31 640 630 116 250 93 25 25 630 the ingot, and less liquidation in the head, owing to the quicker and more uniform solidification of the whole mass. Fig. 95 shows the first compressée! steel ingot manu- factured by Messrs. Schneider and Co. at Creusot, for testing the plant. The size of the central pipe at the head of ingot is very much reduced in actual manufacture by inereasing the pressure. Fig. 96 is a set of diagrams referring to this ingot, particulars of which are given in May 13th, 1896, when the press was first set to work, there have been cast 144 ingots for the manufacture of guns, shafts, and various forgings, weighing in all 4,742 tons. Messrs. Schneider and Co. have supplied a great many compressée! ingots to various manufacturera who do not cast their own steel. We may add here that the Creusot Works are the only ohes in France where this process bas been applied to the treatment of steel ; tliough