With the development of society, aluminum is widely used in our life, which also promotes the development of aluminum profile processing industry. The annual output of aluminum profiles in China is increasing, the quality of products is also very reliable, and its production and processing technology is becoming more and more mature, which can be said to be equivalent to that of foreign countries. 

What are the characteristics of aluminum profiles?

1. Corrosion resistance

The density of aluminum profile is only 2.7g/cm3, which is about 1/3 of that of steel, copper or brass (7.83g/ cm3 and 8.93g/ cm3 respectively). In most environmental conditions, including air, water (or salt water), petrochemical and many chemical systems, aluminum can show excellent corrosion resistance.

2. Electrical conductivity

Aluminum profiles are often selected because of their excellent electrical conductivity. On the basis of equal weight, the conductivity of aluminum is nearly twice that of copper.

3. Thermal conductivity

The thermal conductivity of aluminum alloy is about 50-60% of that of copper, which is beneficial to the manufacture of heat exchangers, evaporators, heating appliances, cooking utensils, cylinder heads and radiators of automobiles.

4. Non-ferromagnetic

Aluminum profiles are non-ferromagnetic, which is an important characteristic for electrical and electronic industries. Aluminum profiles cannot spontaneously ignite, which is important for applications involving handling or contact with flammable and explosive materials.

Production and processing of aluminum profiles

5. Machinability

Machinability of aluminum profiles is excellent. In all kinds of wrought aluminum alloys and cast aluminum alloys, and in all kinds of states after these alloys are produced, the machining characteristics change greatly, which requires special machine tools or technologies.

6. Formability

Specific tensile strength, yield strength, ductility and corresponding work hardening rate dominate the variation of allowable deformation.

7. recyclability

Aluminum is highly recyclable, and the characteristics of recycled aluminum are almost the same as those of primary aluminum.

A brief talk on the production technology of industrial aluminum profiles!

Aluminum can be said to be a widely used metal substance at present, and the raw material of industrial aluminum profiles is also metal aluminum bars. Do you know the manufacturing process of aluminum profiles?

Production process of industrial aluminum profile extrusion;

1. Selection of raw materials:

Industrial aluminum profile is a kind of industrial frame profile which is obtained by heating aluminum bars and extrusion molding with dies, while aluminum bars are formed by melting and casting aluminum ingots, which is called industrial aluminum profile raw materials; The raw materials will directly affect the performance of industrial aluminum profiles.

The production of aluminum bars requires high technical requirements and industry standards to ensure the product performance of industrial aluminum profiles; Attention should be paid to the following points in aluminum rod casting production:

①: the content of active impurities;

②: alloy composition;

③: melt superheat temperature;

④: Diversion mode;

⑤: The melt moves relative to the crystal plane;

⑥: cooling speed;

⑦: casting speed of 6063 aluminum bar;

2. Aluminum bar heating:

The heating treatment of aluminum bar should ensure the temperature control. If the temperature is too high or too low, it will directly affect the hardness of the final product, so the temperature must be strictly controlled during heating and cooling.

3. Mold design:

Industrial aluminum profile is the final product of aluminum rod extruded by die after heating, and the die is an instrument with high precision specifications designed according to the demand, which is used to extrude the profile products with required specifications and sections; Mold design and maintenance should pay attention to the following points:

①: The structure involved in the mold should first meet the production requirements, but also meet the common sense of physical mechanics, so as to ensure that the products produced can reach the used performance.

②: The material selection and hardness of the die should be appropriate, so as to avoid deformation, scratches and other serious injuries in the extrusion process, which will affect the final product quality.

③: Always clean and inspect the mould, and repair it in time if there is any problem, so as to avoid scratches, burrs and other hard injuries in the extrusion production process of profiles, which will seriously affect the quality of industrial aluminum profiles.

4. Profile extrusion:

At present, the standard of extruder used for 6063-T5 industrial aluminum profile is 1300-1600 tons, and the above standard can meet the normal production of 6063-T5 series industrial aluminum profile.

Points for attention in extrusion process of industrial aluminum profiles;

① Temperature control: For extrusion production, extrusion temperature is the most basic and key technological factor. Extrusion temperature has great influence on product quality, production efficiency, die life and energy consumption.

② Extrusion speed: The extrusion speed must be carefully controlled during extrusion. Extrusion speed has an important influence on deformation thermal effect, deformation uniformity, recrystallization and solid solution process, mechanical properties and surface quality of products. ③ On-machine quenching: 6063-T5 quenching is to preserve Mg2Si which is solid-dissolved in the base metal at high temperature after it exits the die hole and is quickly cooled to room temperature. The cooling rate is often proportional to the content of strengthening phase. The minimum cooling rate that 6063 alloy can strengthen is 38℃/ min, so it is suitable for air cooling quenching. The cooling intensity can be changed by changing the fan and the number of revolutions of the fan, so that the temperature of the product before tension straightening can be reduced to below 60℃.

5: Profile straightening correction:

There will be some deviation after extrusion molding of industrial aluminum profiles. After molding, straightening should be carried out by straightening machine to correct the newly extruded industrial aluminum profiles within the required tolerance range. Straightening correction must be completed by straightening machine to ensure its accuracy.

There are many main points in the production process of industrial aluminum profiles, and temperature is one of the most important factors. In the process of operation, we must strictly abide by the relevant regulations so as to avoid the occurrence of defective products and ensure the quality of products.

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