Aluminum profile for high-speed rail luggage rack

Light weight and high speed have become an important symbol of modern high-speed rail motor car transportation

For high-speed trains with a speed of more than 200 km / h, reducing the body weight is the best method for light weight and high speed. Compared with stainless steel, aluminum alloy material has more advantages, mainly because aluminum alloy car body can be made of large hollow aluminum profiles with the same length as the car body. There is no transverse stress weld in the middle, which is easy to realize automatic welding. The manufacturing process is relatively simple, and the sealing and weight reduction effect are significantly better than stainless steel car body.

Chalco aluminum has been developing and producing aluminum profile for high speed rail baggage rack since 2016. Due to lack of

There is no control standard for precision process technical parameters related to this series of products. The production process only depends on the traditional extrusion process technical parameters in the past. The yield of profile is less than 78% and the production cost is high.

In order to meet the needs of the modern market situation and realize the upgrading and development of low energy consumption and high quality,

Chalco aluminum decided to take the impact of aluminum profile for high speed rail baggage rack yield as the key research and development topic, and realize accurate control by improving various process parameters in the extrusion process, so as to improve the yield of extruded profiles and finally achieve the effect of reducing costs.

Aluminum profile for high-speed rail luggage rack, its yield increased by 3.5% and reached 81.5%.

(1) Rod temperature: when producing flat die, the outlet temperature of alloy rod is set at 480 ℃ ~ 500 ℃,

During the production of combined die, the outlet temperature of alloy rod is set at 480 ℃ ~ 520 ℃.

(2) Extrusion temperature: 480 ℃ ~ 510 ℃.

(3) Quenching: quenching speed: 28 ℃ / h, cooling to 160 ℃ ~ 200 ℃.

(4) Straightening: the tensile rate is 0.5% ~ 1%.

(5) Aging: 185 ~ 190 ℃, 2 ~ 2.5h.