INVESTIGATION FOR SHEET WIDTH AND （对钢板宽度和调查）.pdfVIP

Original Scientific Paper Mangat, H.S., Kohli, G.S. INVESTIGATION FOR SHEET WIDTH AND THICKNESS DURING PIPE MANUFACTURING BY ROLL FORMING IN A ROLLING MILL Received: 26 October 2014 / Accepted: 17 November 2014 Abstract: The paper experimentally investigate the anisotropic elastic properties of sheet metal and to find the satisfactory correlation between the strip widths, thickness to the diameter of steel pipe. The work has been focused to investigate the variation in strip thickness, while forming the strip in a rolling mill for constant roller loads and constant line velocity. It was found that there is negligible change in the thickness of the strip while forming. In other words, the strain in the thickness direction is negligible while the stretch in the width direction of the strip is almost increasing linearly with the increase in the thickness. In other words, the strain in the circumferential direction is considerable. Key words: steel pipe, anisotropic elastic properties, rolling mill, strip thickness width, steel pipe diameter, strain Istraživanje širine i debljine ploča u procesu proizvodnje cevi profilnim savijanjem valjcima. U ovom radu su ispitivane anizotropne elastične osobine lima i tražena je zavisnost između širine i debljine trake lima u odnosu na pre čnik cevi. Istraživanje je fokusirano na variranje debljine lima tokom oblikovanja lima u cev pri konstantnoj sili valjaka i brzini proizvodne linije. Primećena je neznatna promena debljine trake lima pri oblikovanju. Drugim rečima napon u pravcu debljine lima je zanemarljiv dok je rastezanje u pravcu širine trake približno linearno sa pove ćanjem debljine. Što