Metallurgy Of Cast Iron

EFFECTS OF ADDING PHOSPHORUS TO MOLTEN IRON.
23I
TABLE 33.—COMPARATIVE TRANSVERSE PHOSPHORUS IRON TESTS AND
ANALYSES.
Test No. Defl. Str'gt Phos. Sil. Sul. Man. G. C. C. C. T. C. T. I.
ist cast, P. T. i .125 4482 .161 1.48 •03 •65 2.10 1.85 3-95 6.271
ist cast, R. I. 2 .08 2,463 .088 i-53 •03 .68 2.90 1.20 4. 10 6.428
2d cast, P. T. 3 •15 3,329 .136 1.46 .03 •5S i. So 2.44 4.24 6.446
2d cast, R. I. 4 .12 2,064 •095 1.48 • 03 .60 2.48 1.84 4-32 6.525
3cl cast, P. T. 5 •US 3,087 • 173 1.32 .03 •63 1.84 2.19 4-03 6.183
3d cast, R. I. 6 .IO 2,170 •093 i-37 .03 •65 2.66 1.50 4.16 6.303
4th cast, P. B. 7 •135 2,322 .144 1.20 .065 •63 3-30 44 3-74 5-779
4th cast, P. T. 8 .125 2,00 r .121 1.16 .068 .64 3-37 43 3.8o 5-7S9
4th cast, R. I. 9 .090 1,740 .090 1.40 .070 .65 345 40 385 6.060
5th cast, P. B. 10 .070 1,386 .280 443 .090 .36 2. 2O .82 3.02 8.180
5th cast, R. I. ii .070 1,366 .213 445 .110 41 3.06 .03 3-09 8.273
TABLE 34-—COMPARATIVE FUSION TESTS OF BARS RECORDED NOS. I TO 6, TABLE 33.
ist Cast. and Cast. 3rd Cast.
Diameter of
Rolls.
iyz ins. 2% ins. il/z ins. 2% ins. \% ins. 2^i ins.
Time of dipp'nj. 2:00 3:00 2:00 3:00 2:00 3:00
Time of total )
fusion lower V 2:0314 3:o43£ 2:03 3:04^ 2:03^ 3:o5
phosph'us bars J
Time of total )
fusion higher > 2:02^ 3:o3}4 2:02-)i 3:osK 2:02 3:o3j^
phosph'us bars ) Differ'ce in time ) of melting ........ j i min. i% min. X min. i% min. i min. i1/* min.
The plan followed in testing the fusibility of the iron and phosphorus alloys in Table 34 and shown by Fig. 51, next page, displays two sizes of fusing test specimens. At H and K, on the left, are bars i ^ inches in diameter by 12 inches long, connected by a rod M. H and K, on the right of Fig. 49, are test specimens 2^ inches in diameter by 6 inches long. In casting these test specimens one was poured with a regular cupola metal, and the other with the metal after the phos-y, M. Hoskins, Harvard College, Havemeyer University, Henry Hiels Chemical Co., Isabella Furnace, Iron Gate Furnace, Iroquois Iron Co., Illinois Steel Co., Jefferson Iron Co., Kittan-ning Iron & Steel Co., C. A. Kelly Plow Co., Lebanon Furnace, Longdale Iron Co., Lackawanna Iron & Steel Co., Logan Iron........................ 16,720 " t-