Aluminum and aluminum alloy profiles are widely used in construction, transportation, electronics, aerospace and other departments. In recent years, due to the demand for miniaturization and lightweight of automobile air conditioning equipment, the proportion of aluminum extrusion products for heat exchangers and hollow profiles has increased rapidly.

According to the data, aluminum and aluminum alloy products in extrusion products account for more than 70%. The development of aluminum alloy profile extrusion technology has also led to the development of modern extrusion technology.

Aluminum profiles have good ductility and plasticity and are widely used in various fields. So what are the technological processes of aluminum profile processing? Generally speaking, the common processes of aluminum profile processing are ingot casting, extrusion, heat treatment and surface treatment.

 So what are the characteristics of these processing methods?

Extrusion of aluminum profile is a processing method of putting aluminum alloy into an extrusion cylinder and applying a certain pressure to make it flow out of a specific die hole, so as to obtain the required cross-sectional shape and size. This extrusion processing method has the advantages of low cost, high efficiency and simple operation, and occupies a considerable proportion in the modern industrial production system, making aluminum profile an important basic material in the national economy. The extrusion of aluminum profile should be carried out according to the following technological process:

"Die Articles"

* die processing process flow chart, flat die (structural profile without closed cavity)

Turning → scribing → milling → drilling → grinding → quenching → tempering → grinding plane → fine milling guide groove → wire cutting → EDM → polishing → clamp repair → acceptance → die test → nitriding → warehousing.

* combined die (structural profile with closed cavity)

* die pad

Turning → marking → milling → drilling → grinding → quenching → tempering → grinding plane → acceptance → warehousing.

* Mould sleeve

Turning → marking → milling → drilling → grinding → quenching → tempering → grinding plane → fine turning → acceptance → warehousing.

"melting and casting articles"

* Typical uses of various brands of alloys

① 6060, 6063, 6063A, 6463 and 6463A are commonly used to produce building profiles, among which 6463A alloy is specially used to produce polished profiles. 6063A alloy is often used to produce building profiles with slightly higher strength than 6063 alloy, such as curtain wall type materials.

② Alloys 6061, 6082, 6106, 6005, 6005A and 6351 are widely used in large-scale structural parts that need good corrosion resistance, such as the bottom plate of refrigerated containers, truck frame parts, ship superstructure parts, railway vehicle structural parts and other mechanical structural parts.

③ 6101 and 6101B alloys are used to produce aluminum alloy profiles for subway conduction.

④ 6563 alloy is mainly used to produce cutting radiator profiles.

⑤ 2024, 5A02, 7005, 7020 and 7075 are high-strength alloys, which are mostly used in spacecraft and mechanical equipment.

* Melting and casting process flow chart

Batching → furnace charging → melting → stirring → gold blending → converter → fine gold blending → aluminum liquid refining → precise filtration → casting → homogenization → sawing.

"Squeeze articles"

* extrusion process flow chart

* profile heat treatment status

Heat treatment: through different quenching and aging systems, the aluminum profile can get its due mechanical properties.

* The difference between natural aging and artificial aging.

Natural aging-it is the aging strengthening of profiles at room temperature, and the aging time is more than one month.

Artificial aging-it is the aging strengthening of profiles at a temperature higher than room temperature (such as 180℃).

Surface treatment: surface treatment can enhance the aesthetic appearance of aluminum profiles and prolong the service life of aluminum profiles. Surface treatment of aluminum profiles can also be colored, which can be obtained by natural oxidation coloring, electrolytic coloring and immersion coloring.

"conclusion"

To sum up, through the detailed explanation of the above aluminum alloy profile extrusion die and extrusion production process, we can better understand the die production process and ingot casting, extrusion, heat treatment and surface treatment, which can achieve the expected results and meet the needs of consumers and customers.

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