Annealing, quenching and heat treatment of aluminum
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Aging
Heat treatment modifies the structure of materials. Aging is subjected to alloys, which contain silicon, copper, magnesium, manganese and zinc. These elements have the ability to form, when heated, finely dispersed compounds that are placed inside the grains of the alloy structure. Since all these alloying elements are readily soluble in the basic aluminum matrix, such processes can proceed naturally, however, to speed up the process, the preforms are heated to temperatures of 180… 200 ° C. Supplier Avlob offers to buy aluminum at a bargain price. The price is the best in this segment of rental.
Types of hardening
- Thermomechanical treatment, when the deformation of the alloy (sediment, piercing, etc.) occurs in the zone of quenching temperatures, which, depending on the grade of the alloy, are in the range 450… 500 ° C. This kind of hardening is the most productive, but it is applicable only for soft and semi-hardened alloys;
- Hardening in a furnace with a protective atmosphere. It is produced as an independent operation mainly for hard aluminum alloys.
Heat Treatment Modes
To obtain optimal mechanical properties, the materials under consideration are heat treated according to the following parameters:
Alloys | Hardening, ° C | Note |
D31, AD33 | 520… 530 ° C | --- |
AMg | not less than 400 ° C | Hardening is carried out under pressure |
Duralumin | 530… 550 ° C | Slow cooling at 400… 280 ° C for several hours; |
AK | 490 ° C | Slow cooling with the oven |
AK | 170… 190 ° C | Aging |
Delivery, price
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