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 Wysłany: Pią 10:56, 07 Sty 2011 Temat postu: ugg stivali Semi-continuous rolling mill for the c |
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Semi-continuous rolling mill for the compound plate thickness control system computer
Prediction value. The results show that the error of ≤ O. 1Trim. (2) the amount of elastic deformation of three-line automatic test baby began rolling in the system before the computer system automatically in certain units (1MN) the pressure of a number of incremental steps of pressure points, real-time base records the amount of elastic deformation of the roll surface and storage. The system no longer applied in the rolling stiffness coefficient of the same but the application to the actual measurement of the elastic curve width correction. The application results show that the calculated and measured the thickness of the thickness of the results of statistical forecast error distribution, the calculation error is less than the thickness of 0. O5mm. 'Department of loving the benefit assessment. An increased level of rolling a little bias because semi-continuous strip mill, two-lane production, plant one by one ~ a non-L ● lj E l 1 Zhu Weiyong mining and other t for compound semi-rolling plate mill thickness control computer System 61 one thousand one hundred and eleven '... ... one thousand one hundred and eleven eleven eleven =- ... one hundred and eleven - eleven by the board and the band width of the actinide in the fourth cross-roller rolling mill, rolling a large difference between the width of the actinide board, resulting in four-high rolling mill roll changes, shape difficult to control, difficult to control the negative deviation rolling in rolling than simply great. Since the application of this system, improve the shape, reducing the difference with the board, hit the target thickness of a better assurance that the rolling raise the level of negative deviation from the original one 0.22ram increased to an average of one 0.30nlm . By a = a 0.08mm, the average nominal P plate thickness 10mm, annual production of 100,000 t & P plate calculation, saving production of the metal material converted 800t / a, creating benefits 2.4 million yuan. 4.2 hours of rolling blocks to improve the system from the applications, the realization of the automatic operation, the rolling rhythm has accelerated noticeably. According to statistics,[link widoczny dla zalogowanych], rolling {5j in the board from an average of 23 per hour up to 3O block. 1O months per year, double the monthly production of 7 days (20 classes), the operating rate of 80, each plate 1.5t calculated to increase the production of l13440t / a. 2.68 million to create effective. 4.3 to prevent the accident from the application of roll-off this system, implemented in the process of rolling over voltage, over pressure,[link widoczny dla zalogowanych], roll gap and zero roll gap difference alarm system with pressure-overload protection, safety discharge load overload protection to avoid the occurrence of roll-off, saving processing time of roll wear and accidents. Improve the level of 4.4 since the application of integrated management of this system, in the production process in a continuous process of collecting all the parameters of rolling and have records, reports, and archiving and other functions, these processes improve the data for the pressure control quality, and prepare for the process analysis and technical personnel to provide a reliable basis. In October 1994 Lloyd's Register of Ship certification review and the Shanghai Committee of Chinese station on Quality Mark Quality Mark certification review of ship plate, the system play an important role in the certification review passed. In summary, the system is formally put into operation since the estimated annual economic benefits for our plant to create 500 million. And can improve the quality of our products, metal consumption is reduced, reducing production accidents, operating conditions improved and integrated management level. 5 Conclusion China is relatively backward in the field of rolling mill control, the domestic in the early 70s began research in this area, according to statistics, in addition to the introduction of the mill with automatic thickness control, the domestic manufacture of the mill to configure the AGC system in 1994, none, only more than 10 sets of rolling mills using APC ~] neither the use of direct computer control, and a plant for the last half of the actinide compound plate rolling mill for the development of the thickness of the computer control system, integrated use of advanced control technologies, such as dynamic and adaptive intelligent control synchronous control, random disturbance forecasting,[link widoczny dla zalogowanych], expert systems' real-time database and online correction procedures, theory of order and learning procedures and techniques of modern control, so cleverly with the transformation of old enterprises combined. Research {5j of the system level, to control computer and control theory, the closure of the 9O Diego's international standards. (Continued from page 3 5 Conclusion '1) for the IF with the motor, electrical products, O. 5n3. m silicon can not be used because too much wear and tear for a significant reduction in losses, first to reduce the thickness of silicon actinides, then raise and lower resistivity silicon carbon, sulfur and other impurities. (2) The second fold to produce a rolling 16-layered thin 0.25mm thick hot-rolled silicon steel sheet. However, to control the board when rolling temperature, roll rolling reduction rate of moderate cooperation. (3) The composition of the stock listed in Table 1, the production of 0.2.5mnl thin silicon film RTH250 actinides have a good time in decadent electromagnetic properties and punching performance, especially when used in more than 1000Hz,[link widoczny dla zalogowanych], is the performance of sulfur Best of the core material. (4) The product has been developed and quantities available to users, by users,[link widoczny dla zalogowanych], has become a hot-selling products, and achieved good economic results.
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