The processing technology and extrusion method of hollow aluminum
profile and solid aluminum profile are basically the same, and the difference lies in the mold used. So, what is the difference between a solid aluminum profile and a hollow aluminum profile? The mold of a hollow aluminum profile 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 hollow part shape mold. Then, the upper mold core is fixed in the cavity of the lower mold, and a welding chamber is also designed between the upper mold and the lower mold. It is to get aluminum into the mold cavity. There is also a shunt hole on the upper die. The aluminum flows to the welding chamber through the shunt hole. 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 male upper mold has a split hole. The mold of solid aluminum profile can be extruded by an extruder only by processing the forming hole in the mold.
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