ISSN:
1573-8973
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Conclusions 1. The investigation of 40KhN and 0SV steels showed that the addition of ferrocerium decreases the concentration of sulfur, decreases the temperatures of the critical points, and increases the strength. 2. The investigation of 18KhNVA, 30KhGSA, 12Kh2N4A, Kh17N2 and 1Kh18N12M2T steels confirmed the possibility of using rare earth elements to increase the quality of the steels. 3. The addition of ferrocerium decreases the susceptibility of the steels to cracking. 4. Adding ferrocerium to the metal in the furnace gives the best results, and this method leads not only to the increase of the quality of the steel but also makes the steel easier to roll. 5. The strength of molds mode of cerium cast iron is one and one-half times higher than that of molds made of gray cast iron. 6. The amount of cerium compound required to obtain 80–90% spheroidal graphite in cast iron depends on the concentration of sulfur. When the concentration of sulfur is 0.011% then spheroidal graphite is formed as the result of the addition of 0.2% of the cerium compound; when the concentration of sulfur is 0.046% then spheroidal graphite is formed only when 0.8% of the cerium compound is added. 7. The advantage of the cerium compound is that it can be added to ordinary casting ladles without the necessity of autoclaves or special chambers, since there is no violent reaction between cerium and cast iron.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00650773
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