Aluminum alloy profile extrusion die and extrusion production process

Views:5381 Author:Site Editor Publish Time:2021-03-17 17:29:47 Orgin:Site

share

Aluminum and aluminum alloy profiles are widely used in construction, transportation, electronics, aerospace and other departments. In recent years, due to the requirements of miniaturization and lightweight of automotive air conditioning equipment, the proportion of aluminum extruded products for heat exchanger tubes and hollow profiles is increasing rapidly.

According to the information, aluminum and aluminum alloy products account for more than 70% of the extruded products. Therefore, the development of extrusion technology of aluminum alloy profile also drives the development of modern extrusion technology.

Aluminum profile has good ductility and plasticity, which is widely used in various fields. 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?

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

"Mould"

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

Turning → marking → milling → drilling → grinding → quenching → tempering → grinding plane → finish milling diversion groove → WEDM → EDM → polishing → clamp repair → acceptance → mold 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 → finish turning → acceptance → warehousing

"Melting and casting"

* typical uses of each grade of alloy

① 6060, 6063, 6063a, 6463, 6463a are often used in the production of building profiles, of which 6463a alloy is specially used to produce polished profiles. 6063a alloy is often used in the production of building profiles with higher strength than 6063 alloy, such as curtain wall materials.

② 6061, 6082, 6106, 6005, 6005A, 6351 alloys are widely used in large structural parts which need good corrosion resistance, such as refrigerated container bottom plate, truck frame parts, ship superstructure, railway vehicle structure and other mechanical structure parts.

③ 6101 and 6101b alloys are used to produce conductive aluminum alloy profiles for Metro.

④ 6563 alloy is mainly used for cutting radiator profiles.

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

* casting process flow chart

Batching → charging → melting → stirring → alloy matching → converter → fine alloy matching → liquid aluminum refining → precision filtration → casting → homogenization → sawing

"Squeezing"

* extrusion process flow chart

* heat treatment status of profile

Heat treatment: through different quenching and aging system, the aluminum profile can get the proper mechanical properties.

* the difference between natural prescription and artificial prescription

Natural aging - it means that the profile is aged and strengthened at room temperature for more than one month.

Artificial aging means that the profile is aged and strengthened at a temperature higher than room temperature (such as 180 ℃).

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

"Concluding remarks"

To sum up, through the above aluminum profile extrusion die and extrusion production process detailed explanation, let us more thoroughly understand the die production process and ingot, extrusion, heat treatment and surface treatment, these processes can achieve the desired effect, to meet the needs of consumers and customers.