hollow aluminum extrusions

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 mold of solid aluminum profile, it is only necessary to process the forming hole on the mold, and then the extrusion can be carried out 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 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,

A shunt hole is also designed on the upper die, and 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 upper mold has a shunt hole.

Advantages of hollow aluminum profiles:

1. Compared with other metal materials, it has low density and light weight, stable chemical properties, non-magnetic, and can be recycled and reused. It is a benign and recyclable metal material.
2. It is treated by two processes of hot and cold, which has strong corrosion resistance and good casting performance.
3. The surface treatment performance is good, the elastic coefficient is small, the collision friction does not spark, and the performance is outstanding in the automobile technology.
4. No metal pollution, no toxicity, no volatile metals in the surface oxide layer, good ductility, and can be used to make light alloys with many metal elements; strong plasticity, good productivity, very conducive to production.

application:

1. Application of aluminum profiles in ships

The application of aluminum alloy profiles on ships and transport vehicles began in the 1790s and has a history of more than 100 years. Nowadays, the use of aluminum alloy profiles as materials in marine vehicles abounds, and the development of aluminum profile ships is also getting faster and faster.

1. Application and development of aluminum alloy profiles in aircraft

Aluminum alloy profiles have also developed greatly in the aerospace industry because of their light weight, strong plasticity, corrosion resistance, and easy assembly. Large-scale special aluminum alloy profiles have become one of the important topics of competition in various places. At present, many complex and integral large-scale special aluminum alloy extrusion profiles have become indispensable important structural materials in the aerospace industry.

1. Development prospects of aluminum profiles on railway vehicles

In recent years, our railway transportation vehicles are developing in the direction of light weight, large size, double deck, high speed, safety, energy saving, comfort, multi-function, low cost and long life. What follows is the gradual increase in the requirements for the car body made of aluminum profile materials. Therefore, aluminum profiles for railway vehicles are also developing in the direction of large-scale integration, hollow thin-walled lightweight, general standardization, high performance, multi-function, energy saving, safety, cost reduction, and improvement of material utilization and production efficiency.