The utility model relates to a small radius bending forming technology for a metal composite pipe.

According to the bonding strength, material properties and relative bending radius requirements of the tube layer, the small radius bending forming of the metal composite pipe can be realized by using different core mold filling processes. The relative bending radius of the metal composite bending pipe obtained by this forming technology can be controlled within 2, which has smooth surface, no wrinkling, no interface collapse and delamination, and relatively evenly-distributed wall. The overall forming quality of metal composite bending pipe is excellent.

At present, it has been realized: (1) stable forming Angle is less than 150°; (2) relative bending radius (tube billet outer diameter/bending radius) is more than 1.76, at this time, the maximum cross section distortion rate of composite pipe is less than 5%, the maximum wall thickness thinning rate is < 15%, no wrinkle and delamination.

Most of the results are published in SCI journals in the form of academic papers. Such as the Size effect mechanism of cross-section deformation and section hollow coefficient-bending degree of the thin-walled composite bending tube, Three-dimensional finite element modeling of rotary-draw bending of copper-titanium composite tube, etc.

Scope of application: Using this optimization technology can realize small radius bending of metal composite pipe of different materials, and can be popularized to metal plastic composite bending pipe forming field.

Market prospect: The metal composite bend obtained by this technology has the advantages of compact structure, excellent performance, good surface quality and high dimensional precision, which can meet the application standards in the field of aerospace and aviation. Metal composite bending pipe can integrate the performance advantages of multi-materials and save cost, obtaining broad application prospects in field of machinery, household appliances, refrigeration, petrochemical, military, etc.

Type of enterprises that want to cooperate: Enterprises that are willing to engage in technical cooperation and joint research and development.

The product is shown below.