The main reason for setting the extrusion die temperature at 460-480℃ is to prevent the ingot from cooling down, avoid causing suffocation and damage to the tool, and ensure the uniformity and performance of the aluminum structure.
In the aluminum extrusion process, the use of 6063 and 6061 alloys is very common. In order to ensure the quality and performance of aluminum, all tools and molds that come into contact with the aluminum ingot need to be fully preheated. The heating and insulation temperature of the extrusion barrel is generally 400-460℃, and the mold heating temperature is set at 420-480℃.
Such a temperature setting helps the aluminum maintain stable physical and chemical properties during the extrusion process, thereby producing high-quality aluminum profiles.
In addition, in order to ensure that the mold is fully heated, the heating time of the flat mold should be greater than 1.5 hours, and the heating time of the hollow mold should be greater than 2.5 hours.
The heating time of all molds in the heating furnace should not exceed 24 hours to prevent the mold from being in the heating furnace for too long and causing annealing. This temperature and time control is one of the key factors to ensure the smooth extrusion process of aluminum and stable product quality.
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