SIGNIFICANCE ANALYSIS OF WELD AND PROCESSING PARAMETERS ON WALL THINNING AND CROSS-SECTIONAL DEFORMATION OF WELDED TUBE IN NC BENDING PROCESS

摘要：

The mechanical behaviors of different kinds of microstructure in weld joint reduce the ductility of the welded tube.In this study,the influences of these inhomogeneities and processing parameters on the deformation behaviors of welded tube are determined by the combination of orthogonal experimental design and finite element analysis.Five factors viz.,weld position,push assistant level,mandrel shank diameter,number of balls and mandrel extension length are selected.The analysis of variance shows that push assistant level and mandrel shank diameter have significant influence on wall thinning Δt,and number of balls has highly significant influence on crosssectional deformation ΔD.The weld shows little effect on the deformation behaviors of the QSTE340 welded tube.

关键词： welded tube NC bending orthogonal experimental design

作者: N.Ren M.Zhan H.Yang Z.Y.Zhang H.M.Jiang K.S.Diao X.P.Chen

作者单位: State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xian,710072 Baosteel Group Corporation,Shanghai,200122,PR China

会议类型: 国际会议

会议名称: The Third International Conference on Heterogeneous Material Mechanics(第三届国际非均匀材料力学会议)

会议地点: 上海

会议语种:英文

页码: 457-460

在线出版日期: 2011-05-22（万方平台首次上网日期，不代表论文的发表时间）