DISCUSSION ON "AN ELECTRIC FURNACE FOR SOFTENING POINT DETERMINATIONS"

1926 ◽  
Vol 9 (1) ◽  
pp. 47-48
Author(s):  
G. Ross
Keyword(s):  
Electric Furnace ◽  
Softening Point

scholarly journals Calcium as an absorbent of gases for the production of high vacua and spectroscopic research

1907 ◽  
Vol 78 (526) ◽  
pp. 429-458 ◽  
Keyword(s):  
Special Reference ◽  
Recent Work ◽  
Electric Furnace ◽  
Softening Point ◽  
Usual Practice ◽  
Soft Glass ◽  
Powerful Means ◽  
Glass Tubes ◽  
Working Together

This paper contains an account of researches carried out by the aid of an electric furnace designed to heat reagents in soft glass tubes up to temperatures far above the softening point of glass, and has special reference to the use of calcium under these conditions as a valuable absorbent of gases. Recent work on the generation of helium from the radio-elements has shown the necessity for more simple, certain, and powerful means of absorbing other gases and in particular nitrogen. The usual practice of Sir W. Ramsay and the writer when working together was to make provision for the removal of compounds of hydrogen, oxygen, and carbon, but to take the utmost precautions against the admission of air into the apparatus in the first place. If nitrogen was present in spite of the precautions taken, it was often possible, by gently running the spectrum-tube, to absorb it by the hot electrodes of aluminium, the lines of helium, if present, appearing as the nitrogen spectrum faded.

A New Electric Furnace

1893 ◽  
Vol 35 (896supp) ◽  
pp. 14322-14323
Author(s):  
Henri Moissan
Keyword(s):  
Electric Furnace

The Electric Furnace

1910 ◽  
Vol 69 (1788supp) ◽  
pp. 226-227
Author(s):  
P. M. N. Bennie
Keyword(s):  
Electric Furnace

Behaviour of copper during the high temperature oxidation of steels produced by the electric furnace route

2003 ◽  
Vol 100 (1) ◽  
pp. 73-82
Author(s):  
Y. Riquier ◽  
D. Lassance ◽  
I. Li ◽  
J. M. Detry ◽  
A. Hildenbrand
Keyword(s):  
High Temperature ◽  
Electric Furnace ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

ELASTUF 44

Alloy Digest ◽  
1958 ◽  
Vol 7 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Tensile Properties ◽  
Alloy Steel ◽  
Electric Furnace ◽  
Heat Treating ◽  
Molybdenum Alloy ◽  
Special Analysis ◽  
Heat Treated ◽  
Steel Heat

Abstract ELASTUF 44 is a special analysis, electric furnace chromium, nickel, molybdenum alloy steel heat treated to Rockwell C42-46, and machinable. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating and machining. Filing Code: SA-72. Producer or source: Brown-Wales Company.

BLACK DIAMOND STANDARD

Alloy Digest ◽  
1975 ◽  
Vol 24 (1) ◽  
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tool Steel ◽  
Electric Furnace ◽  
Heat Treating ◽  
Case Depth ◽  
Specialty Metals ◽  
Lower Carbon

Abstract BLACK DIAMOND STANDARD is an electric-furnace-melted, water-hardening carbon tool steel with an excellent reputation for use as the standard in general shop tools requiring extreme toughness and resistance to shock and impact. In the lower carbon ranges (0.50-0.70% carbon), it is used primarily for tools such as pins, punches, hammers and sledges. Black Diamond may be expected to give uniform and consistent results, although no definite limits of case depth or grain size are regularly guaranteed. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-281. Producer or source: Crucible Specialty Metals Division, Colt Industries.

scholarly journals Fluoride Leaching of Titanium from Ti-Bearing Electric Furnace Slag in [NH4+]-[F−] Solution

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1176
Author(s):  
Fuqiang Zheng ◽  
Yufeng Guo ◽  
Feng Chen ◽  
Shuai Wang ◽  
Jinlai Zhang ◽  
...  
Keyword(s):  
Activation Energy ◽  
Electric Furnace ◽  
Kinetic Equations ◽  
Surface Chemical ◽  
Leaching Rate ◽  
Surface Chemical Reaction ◽  
Mechanism And Kinetics ◽  
Semi Empirical ◽  
Kinetics Of ◽  
Furnace Slag

The effects of F− concentration, leaching temperature, and time on the Ti leaching from Ti-bearing electric furnace slag (TEFS) by [NH4+]-[F−] solution leaching process was investigated to reveal the leaching mechanism and kinetics of titanium. The results indicated that the Ti leaching rate obviously increased with the increase of leaching temperature and F− concentration. The kinetic equation of Ti leaching was obtained, and the activation energy was 52.30 kJ/mol. The fitting results of kinetic equations and calculated values of activation energy both indicated that the leaching rate of TEFS was controlled by surface chemical reaction. The semi-empirical kinetics equation was consistent with the real experimental results, with a correlation coefficient (R2) of 0.996. The Ti leaching rate reached 92.83% after leaching at 90 °C for 20 min with F− concentration of 14 mol/L and [NH4+]/[F−] ratio of 0.4. The leaching rates of Si, Fe, V, Mn, and Cr were 94.03%, 7.24%, 5.36%, 4.54%, and 1.73%, respectively. The Ca, Mg, and Al elements were converted to (NH4)3AlF6 and CaMg2Al2F12 in the residue, which can transform into stable oxides and fluorides after pyro-hydrolyzing and calcinating.

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