Springback behaviors of high strength stainless steel tube after numerical control rotary draw bending

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Fang, Jun^1,2 ; Lu, Shiqiang^2 ; Wang, Kelu^2 ; Gu, Qiang^1 ; Shang, Shikang^1

School of Materials and Mechatronics, Jiangxi Science and Technology Normal University, Nanchang, 330038, China^1

National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang

330063, China^2

关键词: Elastic-plastic finite element;    Friction coefficients;    Numerical control;    Process parameters;    Rotary draw bending;    Springback behavior;    Stainless steel tube;    Threedimensional (3-d);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012184/pdf
DOI  :  10.1088/1757-899X/423/1/012184

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Taking the 21-6-9 (0Cr21Ni6Mn9N) high strength stainless steel tube (HSSST) of 15.88 mm × 0.84mm (diameter D × wall thickness t) as the objective, a three dimensional (3D) elastic plastic finite element (FE) model of the whole process of the 21-6-9 HSSST in numerical control (NC) rotary draw bending was established based on ABAQUS explicit/implicit code, and its reliability was validated. Then, the effects of process parameters on springback of the 21-6-9 HSSST in NC rotary draw bending were studied using the FE simulation based on orthogonal test. The results show that the effects of process parameters on springback angle and radius form high to low are the clearance between tube and wiper die C w, mandrel extension length e, clearance between tube and mandrel C m, friction coefficient between tube and wiper die f w, clearance between tube and pressure die C p, friction coefficient between tube and bending die f b, friction coefficient between tube and pressure die f p, friction coefficient between tube and mandrel f m, clearance between tube and bending die C b, bending speed ω, push assistant speed of pressure die V p and e, C w, C m, f b, f w, C b, f m, ω, C p, f p, V p, respectively. Springback angle and radius decrease with the increase of C w, e or decrease of C m, f b, f w, f m, C b, while the C p, f b, V p and ω have no obvious influence on springback.