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Asynchronous Method in rolling mill applications on


Is to improve the accuracy of the whole formation of the best choices. 4. Formation of the force and energy consumption of the asynchronous for different rolling conditions, to make a concrete analysis. Use the equivalent of over 1 / 3 of the rolling force of a flat induction motor current is 35A, which does not exceed the maximum level over the last ordinary 3OA,[link widoczny dla zalogowanych], therefore, the use of asynchronous formation of high energy consumption than the general level of about l5,[link widoczny dla zalogowanych], but the elongation increased a times. That, under certain conditions,[link widoczny dla zalogowanych], the formation of the asynchronous rolling force and energy consumption compared with the general level of change is not obvious. It must here be described. Shear rolling, the upper and lower rollers on the respective roles of a positive, negative opposite torque, torque rolling consumption is shown in Figure 4 Figure 4 Induction of two rolling force and rolling moment of the algebraic root access shaft torque and 【. Obviously, the torque shaft connected to greatly exceed the total of the rolling moment. Many studies documented that the same conditions in the rolling force, the shear rolling rolling energy consumption is much greater than the average. Therefore, we use asynchronous formation, try to use smaller rolling force, so that the force and energy consumption of the asynchronous level increase was not obvious, but the increase in torque spindle can not be ignored, it can roll the junction with the shaft The key to verifying the deformation damage, and even also have a distorted spindle, so the use of asynchronous rolling, you must have a corresponding powerful drive system (motor - reducer - gear box - spindle). 5. After induction with l elongation flat steel, the mechanical properties shown in Table 3 meet the performance requirements of tin plate. Meanwhile, we in the test validated in [3] described an extension of the asynchronous constant rolling, the tensile strength of its products with the increase of rolling force, so you can adjust the pressure to achieve the product is expected to roll The mechanical properties, test, we 200mitt width strip of the original tin plating plate ratio of 16.9 Asynchronous roll rolling diameter difference Pina, a rolling process by the = mechanical properties of its products meet the Japanese standard flat strip before and after the asynchronous mechanical properties of tensile strength wrapped three day extension of rate l j cans Delta (MPl () l (ram )~~--:------------ after the formation of a flat front 3651369.D J375248 Shanghai Metal quasi 3IS/G33O3--1984 .9 to 8 in the DR specifications. Thus, the transformation of the mill after the production also has the possibility of depression secondary cold rolled sheets. 6. When making asynchronous formation , on the roll of the roll should be certain requirements, the use of l% ratio of about roller roller diameter difference, the products only require conditioning to a certain degree, to eliminate the yield platform, do not want to have too much to increase the tensile strength So roll crown lower value should be used to ensure the rolling force in a small plate to achieve a good case. And the second to produce cold rolled plate, roller diameter ratio requires a large difference, when the rolling force is small, On the one hand reach to a large increase in tensile strength requirements,[link widoczny dla zalogowanych], on the other hand easy to strip the two rollers can not be rolling in the slip, so the roll crown at this time the higher value should be used. Third, the conclusion transformation method using asynchronous rolling mill, especially for those on the device can no longer tap the potential transformation, and who can not meet the technical requirements in terms of the old unit, is a simple, effective way. asynchronous formation is the \sensitivity and performance of rolling is not sensitive to depression, to ensure that the entire strip in the formation of root elongation in the constant, the operation easy to master, can be more satisfied with the board type, dimensional tolerances and good surface quality flat steel . with the ordinary flat compared with the unparalleled advantage, is a good way to improve product quality. References [1] in the village of Ya Yong et al. different building block west rolling plate rolling pull-like 0-tung. plastic processing, 1982, ( 12), 23. [2 Yong-rolled Ni-S induction to the Beijing Qu Qi ir dinner roll in the third report (internal data). [3] Wang Ming were so. S Ting-Heng Shen asynchronous mechanical properties of rolled products. steel, education, 1g89, (9) produced stronger bond of a kind ceramic membrane technology made of stainless steel to withstand the surface temperature of the ceramic lO00 ~ C deep membrane technology by the Japanese National Institute of Metal Research developed. This technology is added in the steel about 0.05 ~ O.15 of the rare earth elements, rare earth elements added steel and steel in the curing units, while preventing the accumulation of sulfur at high temperature ceramic coating and steel in the interface adhesion of the ceramic membrane was down. Although the mechanism of this effect is not clear, however, t tests showed that high temperatures in the IO00 ~ G, plus rare earth ceramic coating on stainless steel, will not peel off, but those who do not increase rare earth ceramic coating on stainless steel,[link widoczny dla zalogowanych], but break into pieces. Zouzong Yue Quoted ESteelTimes ~, 1989, (10)

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