INDEX. 613
Pig Iron—Continued. PAGE.
Evils of using ill-mixed casts of....................139-143
Best method of grading...........................144-145
Definition of "brand" and "grade" of..............144, 396
Difference between Foundry, Charcoal, Bessemer, Gray Forge, Basic, Ferro-Silicon, Ferro-Manganese, Mottled
and White ......................................145-147
Number of founders in 1901 grading by analyses....... 148
Deceptive appearance of the fracture of. .148,169,173,177, 178 Suggested systems for standardizing grading by analyses ..............................................148-153
Erratic and objectionable systems of grading by analyses practiced up to 1902............................. 149
Percentage of silicon required to change the grade of. 150, 155 Desirability of occasional analyses of all metalloids when
purchasing Ferro-Silicon ...................152, 154, 197
Conditions requiring analyses of all five metalloids..... 153
Suggestions to furnacemen for advertising............. 154
Impracticability of exacting certain percentages of
graphite or combined carbon in purchasing........... 154
Methods for utilizing different grades to make a mixture ................................................ 155
The value of standardized drillings in analyzing......
........................................... 156, 181, 192
Process of refining ................................... 162
Excuses to account for ill results through being guided
by the fracture of...........................164. 165, 170
Tests demonstrating the deceptive appearance of fractures in ...................i....................172, 1/4
Impracticability of hardness tests for judging the grade
of ..............................................175-176
Two ways of producing hardness in................... 175
The percentage of furnace casts that will be deceptive
in fractures of ..................................176-179
Necessity of utilizing analyses and physical tests and
what they define in making mixtures of. .194., 205, 258, 497 Evil practice of foundrymen relying upon furnacemen to tell them what they should use.................... 197.............142, 143244