Preparation method of 6-series aluminum alloy with high strength and low parking effect

The invention relates to a preparation method of a 6-series aluminum alloy with high strength and low parking effect, in the production process, during online cooling after extrusion, when the surface temperature of a profile is cooled to 210 +/-10 DEG C, manual rapid cooling is stopped, and then the profile is naturally and slowly cooled to the room temperature. According to the method, fine control is carried out in the quenching cooling process, cooling is stopped when the product is cooled to the aging temperature, then natural air cooling is carried out, the strength loss of the obtained product is smaller than 10 MPa after the product is extruded and placed for one month, and the good market application prospect is achieved. 本发明涉及一种高强低停放效应的6系铝合金的制备方法，生产过程中，在挤出后进行在线冷却时，当型材表面温度冷却至210±10℃即停止人工快速冷却，随后进行自然缓慢冷却至室温。本发明通过在淬火冷却过程中进行精细控制，当产品冷至时效温度时即停止冷却，随后进行自然空冷，得到的产品挤出后停放时间1个月后，其强度损失＜10MPa，具有良好的市场应用前景。