ugg italia Twin-roll strip casting method heat tra

Twin-roll strip casting method heat transfer computer simulation of air-cooling zone

Air Medical Casting Zone is the initial temperature of the roll gap exit temperature, Figure 3 the curve in Figure 5, this same meaning. Figure 2 casting call P¨¢n former times in the air war zone with the temperature distribution of 3, with cast changes in the temperature near the outlet (air) can be seen from Figure 2,[link widoczny dla zalogowanych], cast with it,[link widoczny dla zalogowanych], the surface temperature rise and then a period of cooling, the temperature of the center layer cut off the feet when you drop out faster and then slow down some. 1 / 4 thick layer with a center layer of casting temperature and the temperature close to, the temperature relative to the first l5 pulp paper presented in Figure 4 Glass with cast changes in the temperature near the exit (Jet V = 5m / s) (em) Figure 5 Cast Strip temperature changes near the exit (Jet V = 15m / s) difference small. After a pick-up segment, cast with the surface and center layer. The temperature is also smaller. Cast with the outer surface of the outlet temperature of l380 ¡æ, first, a pick-up in the cold to 100cm at the 1310 ¡æ, to 200cm at the 1240 '(2, cast out of 2m temperature is reduced with a 140 ~ C, continue to count down You can also clearly reflects the whole cast with the air cooling zone temperature distribution. this machine can determine the location of hot-rolled flat to provide design parameters. 4.2 second cast with a cold intensity on the temperature distribution in the roll casting zone joint changes of temperature near the outlet with a surface quality of casting, especially for surface transverse cracks have a greater impact in the roll gap with the temperature near the exit of casting high temperature strength is low. if cast with the intensity of the exit a 3 Wu Weiping: twin-roll strip casting method cooled computer simulation of heat transfer area below the casting belt 51 will have a horizontal crack traction. In order to improve the strength of casting with the exit to avoid the surface transverse cracks can be used surface blowing forced cooling method. This article studies the speed of the casting surface with a jet near the exit temperature distribution. For purposes of comparison, the Figure 2 25cm away from the exit of roll gap with the temperature field of casting section shown in Figure 3 Figure 3 shows more clearly the casting belt near the exit temperature changes, can be seen from Figure 3; outlet center and a cast with a surface temperature of 1412 ¡æ, respectively, and 1380 ~ C, after the cast came out with a core temperature lower faster, cast in the 4.5cm band at the surface temperature increased to 1391 ¡æ, then gradually decreased to 20cnl at reduced l378 ¡æ. Figure 4 is the use of jet speed of 5m / s air force jet to the casting with surface cooling After the cast changes with temperature. Figure 5 is the use of jet speed of 15m / s air force jet to the casting cooled with surface temperature change with a clean cast status. From Figure 4, Figure 5 shows that using compressed air forced cooling After the cast with the outer surface of the temperature rise slows down, then the temperature dropped faster. jet the faster the effect is more obvious. jet speed increases with the outer surface of the transverse cracks cast down significantly less, jet speed of 15m / s when surface cracks disappear. At this time, the surface temperature rise cast little band, 4an only to rise at l370 ~ C, in the cold to the 1346 ~ 20cm at the center layer of cold to l352 ¡æ 'cast than air-cooled state with lower consistency much more. through actual observation of transverse cracks and export of casting around casting the relationship with temperature, calculated using mathematical model of temperature field under different conditions, can prevent the generation of transverse cracks to provide a theoretical basis for .5. reference literature ¡¾Sri Lanka ],[with dozens of taboo SOLIDIFICATION heat problems. Chinese Society for Metals Information Society first group of members of Congress and Symposium Integrated held in November 1992 from 6 to 8, from intelligence units across the country metallurgical experts, representing nearly Baosteel hundred people gathered, ushered in the Information Society of Chinese Society for Metals Congress and the first corporate members of the convening of a comprehensive symposium. because it is the first national meeting of the Institute, so by the Ministry of Information and Baosteel leadership attention. opening ceremony Baosteel leaders welcomed the speech, Secretary-General of the Institute of Society activities, the National Information Society,[link widoczny dla zalogowanych], chairman of the meeting were to convey the spirit of the report. The meeting received a total of 55 papers, of which nine were in the big house exchange,[link widoczny dla zalogowanych], while the remainder Journal of Information Management Technology, respectively,[link widoczny dla zalogowanych], research and documentation of information were 4 lectures, group was also information on how to further strengthen the work and Metallurgical Society of activities in the discussion. named its outstanding papers during the meeting. the closing ceremony, exchange of discussions in each group, announced the Institute of advanced workers and activists learn the list. The meeting, the delegates interesting, visited the spirits pull billet continuous casting plant, hot-rolled and cold rolled sheet production, and sincerely Baosteel production management, plant green, etc. issued praise. Taiwan State Fan Feed

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[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

[link widoczny dla zalogowanych]

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