Методика спрощеного обчислення теплового стану металу при прокатці тонкого листа

Abstract

Use of the system of the speed-up cooling of stripe between draft and clean the groups of cages of flatting mill, and also the speed-up cooling of stripe after a clean group is used with the purpose of receipt of hot-rolled strip in to 0,7 мм thick. One of perspective ways of decision of tasks of improvement of new technological processes and equipment at the calculation of temperature-speed parameters at planning of the modes of wringing out and calculation of efforts of rolling is a method of mathematical design with the use of the analog and digital computing engineering. For modern rollers from hypereutectoid steel, in the system of coordinates, in that the axis of horizontal roller coincides in by an axis at, methodology of the simplified calculation of the thermal state of metal is worked out at rolling of thin sheet, in accordance with that for the receipt of results in a numeral kind in the created mathematical models of heat exchange of stripe at rolling, go across from differential equalizations in partials to corresponding equations differences. Equations differences get substitutionally by their differences derivatives. The common thermal state of metal can be built on the basis of the got dependences for unidimensional tasks.