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What extrusion molds are used for hollow aluminum profiles and solid aluminum profiles?

Hollow aluminum profiles and solid aluminum profiles are both extruded after heating aluminum rods. The difference between the two lies in the use of different extrusion dies. So what specific extrusion dies are used for the two profiles?

1. Hollow aluminum profiles

When processing hollow aluminum profiles, a plane split combination extrusion die is generally used, which is composed of an upper die and a lower die. The components of the upper mold include shunt holes, mold cores, working belts and empty knives, etc. The components of the lower mold include welding chambers, die holes, working belts and empty knives, etc. The main working principle is that the material enters the mold cavity through the shunt holes. Inside, the aluminum alloy is distributed reasonably using the shunt hole. The size of the shunt hole is determined according to the cross-sectional size of the aluminum profile. During extrusion, the shunt hole should be slightly tilted outward to reduce the pressure in the mold cavity. The internal shape of the profile is mainly fixed by the mold core. The height of the lower mold welding chamber must be above 10mm to keep the mold core stable. The aluminum alloy material of the shunt hole is gathered in the welding chamber, and then under the action of high temperature and high pressure, it is Mold flow out.

2. Solid aluminum profiles

When processing solid aluminum profiles, there is no need for upper and lower dies. It only needs to be processed on one mold and then extruded. The extrusion mold is relatively simple, although solid aluminum profiles are heavier than hollow aluminum profiles, have stronger extrusion capabilities, and are more durable. Strong, but in actual production, hollow aluminum profiles are more widely used than solid aluminum profiles.