Extrusion production process of ultrahigh-strength pedestrian protection beam profile for automobile

The invention relates to an extrusion production process of an ultrahigh-strength pedestrian protection beam profile for an automobile, which belongs to the technical field of aluminum alloy processes and comprises the following steps of: reasonably designing 7-series components, controlling cast ingot casting and homogenizing temperatures, adjusting and repairing an extrusion die and extrusion equipment, and strictly regulating and controlling extrusion process parameters. A high-quality aging system is explored through a large number of tests to meet the ultrahigh-strength standard requirement of the profile, the yield strength of the manufactured ultrahigh-strength pedestrian protection beam profile for the automobile can reach 310-330 MPa, the tensile strength is larger than 370 MPa, and the elongation is larger than 15%. 一种汽车用超高强度行人保护梁型材挤压生产工艺，属于铝合金工艺技术领域，通过合理设计7系成分，控制铸锭熔铸及均质温度，调修挤压模具及挤压设备，严格调控挤压工艺参数，经过大量试验探索出优质时效制度以满足型材超高强度标准要求，制得的汽车用超高强度行人保护梁型材屈服强度可达310-330MPa，抗拉强度大于370MPa，伸长率大于15％的单腔体薄壁汽车用超高强度行人保护梁型材产