Transactions of Materials and Heat Treatment

Title：Numerical simulation and experimental research on internal expansion push bending of thinwalled tube

Authors： LIU Jin-song ZHANG Xing-hua LIU Hai ZHANG Shi-hong

Unit： Shenyang Ligong University Chinese Academy of Sciences

KeyWords： thin-walled tube internal expansion push bending bending numerical simulation

ClassificationCode：TG376

year,vol(issue):pagenumber：2012,37(2):63-67

Abstract：

In view of the forming defects of inner wall wrinkling and outer wall tensile cracks during bending process of thin walled tubes, internal expansion push bending forming technology was proposed. The forming specification was 1Cr18Ni9Ti thinwalled tube of Φ30mm×0.3mm. The thin wall tubes' bending forming properties and wall thickness distribution under different internal expansion pressures were researched by finite element simulation. The results of experiments show that the new technology could resolve the forming defects of inner wall wrinkling and outer wall tensile cracks well . It has a great significance to production practice.

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Reference：

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