Research on Deformation Inhomogeneity along Wall Thickness Direction of Cold Radial Forged Barrel

doi:10.3969/j.issn.1000-1093.2020.01.002

Abstract

Abstract: In order to analyze the deformation inhomogeneity along wall thickness direction of cold radial forging barrel, the deformation field, mechanical properties and texture components in the wall thickness direction are studied by means of finite element software, mechanical tensile test and texture analysis. The results show that large shear stresses exist in the outer and middle layers of barrel during the forming process. The flow velocity of each layer in the wall thickness direction is inconsistent due to shear stress, thus causing the uneven deformation of barrel. The shear texture ({112} 111，{110} 001) is formed in the middle and outer layers of barrel due to uneven deformation, which results in obvious difference in axial strength performance of barrel wall thickness direction after forging. The strengths of outer and middle layers are lower, and the strength of inner surface layer is higher. In order to control the inhomogeneity along the wall thickness direction of barrel after forging, the influences of forging ratio, tail pressure, axial feed speed, hammer head forging frequency and hammer angle on the shear stress distribution in the middle layer of barrel are analyzed by using the control variable method. The analysis results show that a higher axial feed speed and a smaller hammer inlet angle can be selected to reduce the deformation inhomogeneity along wall thickness direction of formed barrel. Key

Key words: barrelweapon, coldradialforging, barrelforming, deformationinhomogeneity, mechanicalproperty

CLC Number:

TJ203⁺.1

XU Baochi， SHI Bikun， FAN Lixia， YANG Chen， FU Yunfeng, DONG Xuehua. Research on Deformation Inhomogeneity along Wall Thickness Direction of Cold Radial Forged Barrel[J]. Acta Armamentarii, 2020, 41(1): 13-20.

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第41卷第1期
2020 年1月兵工学报ACTA
ARMAMENTARIIVol.41No.1Jan.2020

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