Features of Nonmetallic Inclusion Formation and Evolution During Ladle Treatment and Continuous Casting of Special Alloy Steels

Metallurgist ◽  
2016 ◽  
Vol 60 (7-8) ◽  
pp. 845-855 ◽  
Author(s):  
A. B. Stepanov ◽  
A. I. Zaitsev ◽  
T. I. Strizhakova
Keyword(s):  
Continuous Casting ◽  
Nonmetallic Inclusion ◽  
Ladle Treatment ◽  
Inclusion Formation ◽  
Special Alloy Steels ◽  
Special Alloy ◽  
Alloy Steels ◽  
Formation And Evolution

High-Pressure Plant for Experimental Hydrogenation Processes

1934 ◽  
Vol 128 (1) ◽  
pp. 5-75 ◽  
Author(s):  
A. T. Barber ◽  
A. H. Taylor
Keyword(s):  
High Pressure ◽  
Experimental Plant ◽  
Hydrogen Attack ◽  
Special Alloy Steels ◽  
Special Alloy ◽  
Continuous Plant ◽  
Complete Disintegration ◽  
Alloy Steels ◽  
Higher Temperature ◽  
Pressure Plant

The paper gives an account of some of the mechanical difficulties experienced in the development and operation of experimental plant for the hydrogenation of coal and tar for the production of motor spirit. Particulars of the various stages of progress are given, from small autoclaves up to a continuous plant capable of producing up to 300 gallons of spirit per day. The pressure plant is operated at 3,000 to 6,000 lb. per sq. in., and at temperatures up to 950 deg. F. Hydrogen produces complete disintegration of the structure of mild steel under the higher temperature conditions. The use of special alloy steels reduces the liability to hydrogen attack, giving longer working life and allowing higher working pressures, but satisfactory service can best be obtained by insulating the pressure-resisting walls from the heating medium so as to avoid heating the metal beyond 200 deg. F. Various methods of making suitable joints for high-pressure pipes and cylinders are described, and the results of microscopic examination of sections of cylinders are given in Appendixes.

Determination of Vanadium in Special Alloy Steels

1932 ◽  
Vol 4 (2) ◽  
pp. 187-190 ◽  
Author(s):  
Hobart H. Willard ◽  
Philena Young
Keyword(s):  
Special Alloy Steels ◽  
Special Alloy ◽  
Alloy Steels

PYROLYSIS OF THE LOWER PARAFFINS: III. PRODUCTION OF OLEFINES IN BAFFLED METAL TUBES

1933 ◽  
Vol 9 (6) ◽  
pp. 583-590 ◽  
Author(s):  
Adrien Cambron ◽  
Colin H. Bayley
Keyword(s):  
Thermal Treatment ◽  
Alloy Steel ◽  
Steel Tubes ◽  
Heat Resistant ◽  
Special Alloy Steels ◽  
Special Alloy ◽  
Alloy Steels ◽  
Elementary Carbon

Results have been obtained which indicate that the conversion of the lower paraffins to olefines by thermal treatment can be satisfactorily carried out in special alloy steel tubes at 800–820 °C. By using baffled tubes it has been found possible to obtain high rates of conversion at temperatures considerably lower than when using open tubes. Actually the temperature has been brought within the range of usefulness of special alloy steels. Heat-resistant alloys of the 18–8 type have been found unsuitable for this purpose, because nickel appears to catalyze the formation of elementary carbon, but nickel-free alloys containing over 20% of chromium have been found satisfactory.

Special alloy steels as applied to chemical engineering

1932 ◽  
Vol 51 (24) ◽  
pp. 502-520
Author(s):  
T. G. Elliot ◽  
R. J. Sarjant ◽  
W. Cullen
Keyword(s):  
Chemical Engineering ◽  
Special Alloy Steels ◽  
Special Alloy ◽  
Alloy Steels

Special alloy steels as applied to chemical engineering

1932 ◽  
Vol 51 (25) ◽  
pp. 527-531
Author(s):  
T. G. Elliot ◽  
R. J. Sarjant ◽  
W. Cullen
Keyword(s):  
Chemical Engineering ◽  
Special Alloy Steels ◽  
Special Alloy ◽  
Alloy Steels

Modular Horizontal Continuous Casting Machine: Meeting the Challenge of Flexible Manufacturing of the Future

2009 ◽  
Vol 419-420 ◽  
pp. 349-352
Author(s):  
Pongsak Chaengkham ◽  
Panya Srichandr
Keyword(s):  
Continuous Casting ◽  
Modular Design ◽  
Continuous Casting Machine ◽  
Casting Machine ◽  
Carbon Steels ◽  
Low Alloy Steels ◽  
Cross Sectional ◽  
Horizontal Continuous Casting ◽  
The Future ◽  
Alloy Steels

Manufacturing of the future has to be more flexible and versatile in order to meet the ever changing needs of the customer. Most continuous casting machines today are rather inflexible in that they are designed to cast specific types of alloys and with limited size ranges, thus suitable for the mass production paradigm. This paper reports the design and development of a modular horizontal continuous casting machine (HCCM). The aim is to have a machine that can continuously cast a variety of ferrous alloys from carbon steels, low alloy steels, stainless steels to cast irons, and with ranges of cross-sectional areas. The modular design approach and quick changing techniques are employed as the key design concept. The construction of the first prototype of the machine is completed and several field trials have been conducted. The results are promising. For carbon and low alloy steel billets, the overall structures and surface quality are good although the amount of porosities is rather large. The overall quality of stainless steel billets is better than that of carbon and low alloy steels. Adapting and setting up the machine for casting different alloys and/or different billet sizes require a little time, no more than 20 minutes.

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