Aluminum profile for relieved tooth radiator and extrusion production method of aluminum profile

The invention provides an aluminum profile for a relieved tooth radiator and an extrusion production method of the aluminum profile. The aluminum profile is prepared from, by mass, 0.1%-0.25% of Si, 0.1%-0.35% of Mg, 0.01%-0.02% of Ti, 0.1%-0.3% of Fe and the balance Al and inevitable impurity elements. The extrusion production method sequentially comprises the steps of burdening, melting of aluminum alloy liquid, blowing refining in a furnace, online grain refinement treatment, online degassing filtering, semi-continuous casting, aluminum bar heating, extrusion and stretch straightening. A coarse grain layer on the surface layer of the aluminum profile is eliminated, the distribution uniformity of the internal structure and hardness of the aluminum profile is improved, the aluminum profile is used for the relieved tooth radiator, tooth pieces of the radiator are straight, the tooth space is uniform, the tooth height is consistent, and the excellent radiating effect is achieved. 本发明提供了一种铲齿散热器用铝型材及其挤压生产方法，铝型材由