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 Posted: Wed 2:04, 19 Jan 2011 Post subject: moncler günstig The relationship between sulfur a |
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The relationship between sulfur and iron bred
Oxides of elements, otherwise its effectiveness is very low or even invalid. Table l-rich sulfide jl} when the temperature into the free energy of curing Parkinson AF (kJ / mold) CeS a 533.8CItS-5l3.7SrS-496.2LaS-481.9BaS-464.8MgS-389.0AIS (1l00. C melting)-275.1TiS-254.2MnS-248.3tm) strider Barry basal plane of graphite and sulfide Figure 4, the false positioning system to the total as eucalyptus according to the classical theory of crystalline phase in the basement and the character match is between nucleation of a very important parameter. In a test with the pure iron, we found that the size mismatch of character (Latticedisregistry) less than 6%, this would be a Higher basal nuclei, and in 6 to 12 when the smart medium effective. Conceived by a number of elements such as cerium and efficient, calcium,[link widoczny dla zalogowanych], silicon, barium and rare earth sulfides have formed by salt (NaCI) crystal structure, the close-packed sulfide (111) and graphite exists between the extension of the base surface relations, shown in Figure 4. Starting from this epitaxial relationship. Table 2 graphite and sulfide (with NaCI) structure of cyberspace dl1l lattice mismatch mismatch at room temperature (cracking) sulfide flail (10. M) at room temperature 1148'CMgS3 .68-13.7-12.5 MnS3.69- 13.4-12.1CaS4.03-5.5-4.1CeS4.08-4.2-2.9LaS4.14-2.9-1.5SiS4.260 +1.3 BaS4.52 +6.0 + 1993 7.5 Modern Cast Iron sulfide and the first phase of the graphite crystal size does not match the relationship between the calculated, are shown in Table 2, expressed as a percentage of misfit can be used to calculate the following equation: mismatch: - Cut the button falling raw coke = 4.26 for the Fort ~ where graphite basal plane in the distance between the corresponding carbon atoms (10. m) Figure 4, the value is not temperature, because thermal expansion is small, so 1148. c and room temperature the same. Mismatch of some changes at high temperatures, this is due to sulfur from room temperature to 1148'C. The cracking of linear thermal expansion of about 1.4. Sulfide can be seen in the table most of mismatch is less than or equal to 6 cracking, indicating that they may serve as an effective base of graphite. Calcium or magnesium strontium calcium magnesium treatment of cast iron, there will be multiple sets of sulfide (Mg, Ca, Sr) S, the character parameter determines the elements in the sulfide in the relative proportion of each of these sulfide can be dissolved, because they all have] qaCI crystal structure, lattice parameters are similar. Therefore, (Mg, Ca) S character constant a. Should be between 5.52 ~ 5.70 �� 10. m, while the lattice mismatch between 4. i ~ 12. i cracking between. Fifth, the discussion whether it is a lot of experimental evidence or theoretical considerations support the graphite core theory of sulfides. Although the inoculant is not sulfur, but in the breeding process produces a large number of sulfur million things are indisputable. Whether the decline of birth satisfactory to explain the phenomenon. This is the theory of a variety of important test of birth, birth sulfide theory interpretation of recession, the new formation of sulfide in the molten iron can not long exist independently over time. Hot metal will be further oxygen to worry about the sulfide shell is surrounded by a layer of oxide, lost the ability as a graphite-yung, resulting in recession. This interpretation is based on theoretical analysis from the,[link widoczny dla zalogowanych], yet to test the map card. References 1WaIIaceJFeta1. Howinoculationworks. Proceedingsofconference (continued on page 54) for a 45 - Fourth, the casting out of the box and the aging body in order to obtain cable-based Organisation ball off and the less light body cast ductile iron, castings after pouring out of the box must extend the time for the body in the cast Type the slow cooling, to complete the eutectoid fully ferrite, and to prevent rapid cooling produces castings ignored the large amount of cementite and pearlite. Within the body in the mold to cool to l60. C below, roughly ll0h. To reduce condensation casting blocked the contraction stress generated,[link widoczny dla zalogowanych], casting box after hanging open seat package, 2h after all the mold release fastening bolts, pry open the mouth to take overflow from the iron. V. 280 aging body is extremely complex,[link widoczny dla zalogowanych], low-temperature aging, eliminate casting stress. The initial trial in the body. Zengyin aging treatment center of the body thick disk spindle Road runs through the cracks at the transverse 2 sets of body scrapped, after the aging process and improve the casting process, effectively eliminating the casting residual stress, solve the cracks. Aging installed furnace, the body should be side, so that
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