– Operates from single phase 220 volts for greater convenience and efficiency – Classic Ercolina design reduces floor space requirement and easily stores to save shop floor space – Accepts Ercolina’s A40-P two axis positioning table for multiple and sequential bends – Swing away counterbending die vise for easy material handling – Quick-change tooling system with multiple radii available – Initiate bend cycle from the control panel or included foot pedal – Bend any angle to 180° with independent material springback compensation for each bend – Separate display of material spring back for greater accuracy on a variety of materials – Large easy to read color coded control displays all current information in real time – Easy one touch control allows any operator to program and automatically store bend angle The results indicated that the normal mechanical bonding bimetallic tube with an interlaminar friction coefficient below 0.3 can reduce spring-back.Ercolina’s Super Bender Plus is ideal for producing consistent quality bends in pipe, tube, squares, solids and other profiles. The change of spring-back angle with the interlaminar friction coefficient was investigated. The theoretical results are closer to the experimental results than the finite element (FE) results and the theoretical results neglecting neutral layer shifting. Simulations and full-scale bending experiments were carried out to verify the reliability of this prediction model. To investigate D, the neutral layer shifting extraction method was proposed to get the shifting value from finite element simulations. This model calculated the spring-back angle by importing two new parameters-the composite elastic modulus (Ec) and the composite strain neutral layer (D).

This work proposed a theoretical prediction model of bimetallic tubes' spring-back under computer numerically controlled (CNC) bending.

The layered coupling causes complex section internal force and new boundary conditions.

The spring-back prediction theory for precise forming of such tube configuration is lacking. Abstract : Bi-layered metallic bending tubes are widely used in extreme environments.

Tube bending spring back chart