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Do you understand the technical requirements of aluminum radiator profiles extrusion?

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Update time : 2023-02-27 14:34:21
Aluminum alloy is widely used in heat dissipation equipment because of its light and beautiful weight, good thermal conductivity and easy processing into complex shapes. There are three main types of aluminum radiator profiles: flat and wide, comb or fishbone; Circular or oval outside radiator radiate, branch shape. The aluminum radiator profiles have a part of small size and symmetrical shape products are easier to produce. Most of the industrial radiator aluminum profiles are flat and broad, with larger dimensions. Some are asymmetrical, and the slot depth to width ratio between the radiator fins is very large, making it difficult to produce. It is necessary to cooperate with ingot, mold and extrusion process in order to successfully produce aluminum radiator profiles. At present, 6063 alloy is generally used more, because it has good extrusion, thermal conductivity, and mechanical properties.
1. Quality requirements for ingot casting
The surface of the ingot should be smooth and no sand and mud should be allowed to stick. The end face of the ingot should be flat, not cut into the shape of a step or the tangent slope is too large (the tangent slope should be within 3㎜).
2. Requirements for molds
Because the mold of aluminum radiator profiles is a lot of thin teeth, to withstand a lot of extrusion pressure, each tooth must have high strength and toughness. If the performance of each other is very different, it is easy to make those teeth with poor strength or toughness fracture.
3. Reduce crush pressure
Extrusion pressure should be reduced as far as possible in order to prevent mold tooth breakage, and extrusion pressure is related to the length of the ingot, the size of the alloy deformation resistance, the state of the ingot, the size of the deformation degree and other factors. Therefore, the casting rod of extrusion cooling aluminum profile processing should not be too long, about the length of the normal casting rod (0.6 ~ 0.85 times).
4. Extrusion process
A key step in the production of aluminum radiator profiles is to test the extrusion die. The test die is very important. The operator should make the main plunger move forward slowly at a low pressure of less than 8MPa when pressing up. In order to gradually increase the pressure and accelerate the extrusion.
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