Effect of geometrical parameters on forming quality of high-strength TA18 titanium alloy tube in numerical control bending

作     者：方军 梁闯 鲁世强 王克鲁 Jun FANG;Chuang LIANG;Shi-qiang LU;Ke-lu WANG

作者机构：江西科技师范大学江西省材料表面工程重点实验室南昌330038 南昌航空大学轻合金加工科学与技术国防重点学科实验室南昌330063 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2018年第28卷第2期

页      面：309-318页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：Project(GJJ150810)supported by the Research Project of Science and Technology for Jiangxi Province Department of Education,China Project(gf201501001)supported by National Defense Key Discipline Laboratory of Light Alloy Processing Science and Technology,Nanchang Hangkong University,China Project(BSJJ2015015)supported by Doctor Start-up Fund of Jiangxi Science&Technology Normal University,China 

主　　题：high-strength TA18 tube geometrical parameters forming quality finite element simulation numerical control bending 

摘      要：The forming quality of high-strength TA18 titanium alloy tube during numerical control bending in changing bending angle β, relative bending radius R/D and tube sizes such as diameter D and wall thickness t was clarified by finite element simulation. The results show that the distribution of wall thickness change ratio Δt and cross section deformation ratio ΔD are very similar under different β; the Δt and ΔD decrease with the increase of R/D, and to obtain the qualified bent tube, the R/D must be greater than 2.0; the wall thinning ratio Δto slightly increases with larger D and t, while the wall thickening ratio Δti and ΔD increase with the larger D and smaller t; the Δto and ΔD firstly decrease and then increase, while the Δti increases, for the same D/t with the increase of D and t.