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基于DEFORM-3D软件,分析了7075高强铝合金轿车发动机油管接头热挤压成形过程,揭示了工艺参数对热挤压成形过程中材料最高温度的影响。结果表明,随着挤压速度的增大,最高温度增大;随着坯料加热温度的升高,最高温度下降;随着摩擦系数的增大,最高温度增大;随着模具预热温度的增加,最高温度增加。合理的挤压工艺参数为:挤压速度2～8 mm/s;坯料加热温度390～450℃;摩擦系数<0.3;模具预热温度400～440℃。
Based on DEFORM-3D software, hot extrusion forming process of 7075 high strength aluminum alloy engine oil pipe joint was analyzed, and the influence of process parameters on the maximum temperature of hot extrusion forming process was revealed. The results show that the maximum temperature increases with the increase of extrusion speed, the maximum temperature decreases with the increase of the heating temperature of the billet, and the maximum temperature increases with the increase of the friction coefficient. Increase, the maximum temperature increases. Reasonable extrusion process parameters: extrusion speed 2 ~ 8 mm / s; billet heating temperature 390 ~ 450 ℃; friction coefficient <0.3; mold preheating temperature 400 ~ 440 ℃.