File:Transactions (1871) (14598226740).jpg

Identifier: transactionsmining44amer (find matches)
Title: Transactions
Year: 1871 (1870s)
Authors: American Institute of Mining, Metallurgical, and Petroleum Engineers
Subjects: Mineral industries
Publisher: New York (etc.)
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
60,000 20 50,000 10 40,000 INCREASING SLOWNESS OFCOOLING.Note to Fig. 1.—The vertical scale from 40,000 to 60,000 lb. is tlieFig. 1.—Influence of the Eate of Cooling from !)(iO° C. on the 1.19 Per Cknt. The several curves represent the maximuiu, miniimiai, and average DIVORCING ANNEALING. 523
Text Appearing After Image:
E F G INCREASING SLOWNESS OF COOLING.- same as that of Figs. 2 and 3. From 60,000 to 250,000 lb. it is smaller.Mechanical Properties of Steel No. 22, 0.21 Per Cent, of Carbon,OF Manganese.of the several properties after the various treatments. 524 DIVORCING ANNEALING. ized layer, aucl the specimens were then reheated to 300° tocrystallize any metal made amorphous by the machining. Theexperiments are described in detail in the appendix. The hardness results given in Table II. were reached by meansof the Brinell drop-test, measuring the area of the impressioncaused by the impact of a ram falling from a fixed height. Table II.—Influence of Prolonging the Stay in the Divorcing Range on the Mechanical Properties of Steel No. IV., 0.21 Per Cent, of Carbon, 0.05 Per Cent, of Manganese. (See Figs. 2 and 3.) All Heated to 900. No.of 6 S5 Bar. s o O 61 1 64 1 n 3 76 3 62 1 63 1 69 2 70 2 71 2 72 2 66 1 1 68 I 74 a ! 65 i! 67 1 80 3 75 3 77 3 78 3 79 3 How Cooled. From 900°to 680=1= 5° In K

Note About Images