摘要：Determining and optimizing the properties Of a tube semi-finish in advance of subsequent processes such as bending and hydro forming require simulation of the entire process chain.Every single forming step must be considered in terms of it smfluence on material properties.In many cases.For example hydro forming one starts by simulating the forming operation with the ready tube.Although major properties such as work hardening have already been defined by the product Hon process in the tube welding plane For this reason we commence our simulation as early as the role forming phase。Considering the individual forming steps in the process chain。I.E.Roll forming。Preparation for welding and calibration.Investigations show that these steps have a substantiate effect on later tube properties, and that they can be influenced positively by adroit variation of the tube forming process.A computer program system is presented here by means of which the entire tube making process chain-roll forming.Welding, calibration and even verification of the tube properties by means of hydro forming-can be mapped.
