(navigation image)
Home American Libraries | Canadian Libraries | Universal Library | Community Texts | Project Gutenberg | Children's Library | Biodiversity Heritage Library | Additional Collections
Search: Advanced Search
Anonymous User (login or join us)
Upload
See other formats

Full text of "Metallurgy Of Cast Iron"

553
METALLURGY   OF   CAST   IRON.
comparison. Further summary of results, especially those illustrated by Tables 115 to 126, are given by the author on pages 571 and 574.
TABLE  A-II5-—TESTS  OF  BESSEMER   IRON   CAST   AT THE THOS.  D.  WEST FOUNDRY   CO.,  SHARPSVILLE,  PA.
Transverse tests of unfinished green sand bars.				Transverse tests of finished green sand bars.*				Tensile tests of unfinished and finished green sand bars.		
'o jj 1*	dS 3W	Break'g load. '	o   . OJ    r-, &	to ^J _• t/j gx	Diameter.	bJ3 ~«i to «"""	II Q^	*o ,j &	§ jj 3"	Break'g load.
i	•59	445	•173	9	-56	150	•305	16	-57	40,440
2	1.20	2,440	.130	10	1.13 1.69	1,880	•234	17	I-I3	13,630 28,860
3	I.7S	6,425	.126"	ii		5,430	.160	18	1.71	
4	2-30	13,965	.no	12	2.15	10,025	.114	19	2.27	44,830
5	2.92	24,320	.roi	13	2.82	19,150	.086	*Fit	ished	Dars.
6	3-44	36,875	.100	14	3.38	29,340	.072	20	.56	3,44o
7	4.02	5^,435	.090	15	3-95	51,985	.079	21	1-13	i3,49o
8	4-65	77,335	.082					22	1.69	27,520
*A11 the finished bars shown in tests Nos. 9 to 15, as well as in all the finished bars in Tables 116 to 126, designated by stars, were made of rough bars cast in green sand that had a trifle over l/± -inch of stock turned off their surfaces. As an illustration, the tensile bars 20, 21, and 22 of the above Table 1.15 were of the diameter seen in transverse tests Nos. 10, n, and 12 before they were turned
Compression tests from bars cast in dry sand of Table 115 showed a j^-inch cube cut from a rough ^-inch bar to stand 29,570 pounds, and a ^-inch cube taken from the center of a i-inch square bar 20,010 pounds; from the center of a 2-inch square bar, 13,180 pounds; 3-inch square, 9,830; and 4-inch square, 9,100 pounds.
The iron used for Table 115 or cast A was an all-coke pig iron mixture having about 5 per cent, scrap melted in a cupola, and is a class of iron used for castings that583.