Yurev O. Substantiation of the parametres of broad edge and roll form profiling under the thick plate rolling

An object is a process of forming rolls with unrectangular the contour of cross-sectional and the form of the plan at the production of thick-leaved rental; a purpose is a ground of rational parameters of wide verges's profiling and form of rolls in a plan at rolling of thick sheet; methods are a physical design, mathematical design, method of coordinate scale, methods of cross-correlation and regressive analyses; an apparatus is a line, vernier calliper, micrometre, photocamera, PECM; results - the new metal-preserving methods of rolling of thick sheets, mathematical model and algorithm of calculation of forming's parameters, are developed on the method of rolling with profiling of wide verges's rolls by the variable preload of thickness on their length; novelty - first four stages exposed in the dynamics of forming rolls in a plan, having an initial concavity and tighten of front end on a width, as far as filling the metal of hearth of deformation; new dependences are got for determination of valuesof tighten of width on the front and back end of rolls in a plan. Dependences are specified for determination of values of arrows of concavity of ends of rolls in a plan due to the account of factors of B/H (attitude of width toward the thickness of purveyance) and D/H (attitude of diameter of workings rollers toward the thickness of purveyance); dependences of parameters of forming rolls are first got in a plan from the corner of task and preload at their task in fellings on a corner and profiling of wide verges of slabs by the permanent and variable preload of angular areas; practical recommendations, directed on the increase of technical - economical indexes, are used in "Donix LTD" at development of the computer program of calculation of the modes of rolling in the cage of thick-leveled rental and passed as technical suggestions of closed corporation "NKMZ", the expected annual economic effect is 2625 thousands of Uah.; an area of the usage are plates of metallurgical and machine-building enterprises.