The distinction between solid aluminum profiles and hollow aluminum profiles

The processing technology and extrusion method of hollow aluminum profiles and solid aluminum profiles are basically the same, and the difference lies in the molds used.

For the die of solid aluminum profile, it is only necessary to process the forming hole on the die, and then it can be extruded by the extruder. For hollow aluminum profiles, the mold is composed of an upper mold and a lower mold. The lower mold is processed into the shape of the aluminum profile, and the upper mold is processed into a mold core in the shape of the hollow part, and then the upper mold core is fixed in the lower mold In the cavity of the mold, a welding room is also designed between the upper mold and the lower mold. To get aluminum into the mold cavity,

The upper die is also designed with a shunt hole, through which the aluminum flows to the welding chamber, the aluminum is re-welded under high temperature and high pressure, and the die hole is extruded to become the hollow aluminum profile we need. Since the mold used for the hollow aluminum profile is composed of two parts, we call the hollow aluminum profile mold a combined mold, and some are called a split mold because the upper mold has a shunt hole.