论述了铝棒材在挤压筒中热挤压时的云纹量测技术和应变应力解析过程。获得了铝棒材子午面上沿轴向和垂直于轴向的云纹图象,根据云纹图象解析得到铝捧材热挤压时子午面上应变应力的分布及棒材与挤压筒壁间的应力分布,并与常温铅模拟试验作了对比,分析了铝棒材热挤压时的金属流动和摩擦情况。 This paper discusses the measurement technology of moire and the analysis of stress and strain during the hot extrusion of aluminum bar in the extrusion cylinder. Obtained moire images along the axial and perpendicular axial directions on the meridian surface of the aluminum rod, and according to the moire image analysis, the distribution of strain and stress on the meridional surface during hot extrusion of the aluminum sheet and the relationship between the bar and the extrusion cylinder The stress distribution between the walls was compared with that of the lead simulation test at room temperature. The metal flow and friction during hot extrusion of aluminum bar were analyzed.