Actual Problems in Machine Building 2016 No. 3

Actual Problems in Machine Building. 2016. N 3 Innovative Technologies in Mechanical Engineering ____________________________________________________________________ 172 THE TECHNOLOGICAL CAPABILITIES OF HIGH PRECISION PLASMA CUTTING SCHEME HiFocus Plus IN PROCESSING OF STRUCTURAL STEELS Rakhimyanov Kh.M., D.Sc. (Engineering), Professor, e-mail: kharis51@mail.ru Gaar N.P., Ph. D. (Engineering), Associate Professor, e-mail: lianelas@mail.ru Loktionov A.A., Senior Lecturer, e-mail: pushkin-lok@mail.ru Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk, 630073, Russian Federation Abstract The research dedicated for evaluating the accuracy of the metal sheet materials cutting using the technology of high-precision plasma cutting scheme HiFocusplus. The results of experimental studies of cutting edges squareness width the cutting thickness range from 4 to 20 mm for structural steel St. 3 are presented. A significant cut squareness of deviation the left edge compared to the declared value of the equipment manufacturer. It is proposed to choose the direction of plasmatron moving along contour being processed so that the shaping of parts to realize by the right edge of the cut. It is experimentally shown that when cutting of low carbon structural steel with the thickness range of less than 14 mm and more than 20 mm precision cutting parameters and its cutting width are not achieved, according to the manufacturer. A possible set of activities to improve the accuracy of cutting in these ranges of thickness of the processed material proposed. Keywords High-precision plasma cutting, plasmatron active elements, kerf, cutting speed.