Anti-corrosion aluminum alloy for complex heat conduction system and production method thereof
A production method and aluminum alloy technology, which is applied in the field of aluminum alloy production, can solve the problems of affecting the surface quality of products, the decline of heat dissipation effect, and corrosion, and achieve the effects of low cost, stable thermal conductivity, and good corrosion resistance
Inactive Publication Date: 2014-01-15
HENAN POLYTECHNIC UNIV
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Problems solved by technology
During production, it was found that many black spots appeared on the surface of many aluminum profiles after coating treatment, and then (2 months) the coating on the spots began to peel off, and a large area of corrosion defects appeared on the surface of the profiles, which seriously affected the surface quality of the product. leading to a decrease in its cooling effect
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[0013] The present invention will be described in detail below in conjunction with specific embodiments.
[0014] 1. Melting and casting process (ingot production)
[0015] Melt pure aluminum and aluminum-silicon intermediate alloy at 760°C and keep it warm for 30 minutes, carry out the first refining slagging, then add pure magnesium, Al-5Ti-B refiner and mixed rare earth, stir evenly, and carry out the second refining Refining, raising the temperature to 750°C for 15 minutes to keep it still for 15 minutes, and finally casting it into a round ingot.
[0016] The silicon content in the ingot is 0.383% (mass percentage, the same below), the magnesium content is 0.596%, the amount of Al-5Ti-B added per ton of alloy material is 3 kg, and the mixed rare earth is added in the form of an aluminum master alloy, and the content is controlled At about 0.25%, the refining agent and covering agent are added at 3 kg per ton of alloy material; the refining agent is added during the first...
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The invention discloses a production method of an anti-corrosion aluminum alloy for a complex heat conduction system. The method comprises the steps of A1, smelting and casting; A2, homogenizing cast ingots; loading the cast ingots to a heat treatment furnace; maintaining the temperature for 6-8h at 560 DEG C; discharging from the furnace, and quickly cooling the cast ingots to room temperature; A3, extruding: during flat-die extrusion, controlling temperature of the cast ingots to be 480 DEG C, heating temperature of an extrusion barrel to be 440 DEG C, die temperature to be 490 DEG C and sectional material outlet temperature during the extrusion to be about 510 DEG C; cooling the sectional material by a fan in a top and bottom forced cooling mode to be less than 200 DEG C to prevent strengthening phase from being separated out; A4, performing ageing process: loading the sectional material in an ageing furnace, performing ageing for 6h at 180 DEG C, cooling to room temperature with the furnace and then discharging the product from the furnace. The production method of the alloy is free from pollution and is low in cost; the produced aluminum sectional material has the advantages of stable heat conduction performance, high surface quality and good corrosion resistance, is suitable for commercial production and can replace prior normal heat-conducting aluminum alloy material.
Description
technical field [0001] The invention relates to an aluminum alloy production technology, in particular to a corrosion-resistant aluminum alloy used in a complex heat conduction system and a production method thereof. Background technique [0002] Al-Mg-Si aluminum alloy has good thermoplasticity, ideal comprehensive mechanical properties, and easy surface treatment, so it is widely used in the production of industrial profiles, construction industry profiles and electronic cooling equipment. According to different application environments, the performance requirements of materials are very different. For example, high-end products used in the cooling system of electronic base stations often have to undergo complicated nickel-plating and tin-plating treatments, which require high surface performance of materials. During production, it was found that many black spots appeared on the surface of many aluminum profiles after coating treatment, and then (2 months) the coating on t...
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IPC IPC(8): C22F1/04C22C1/03C22C1/06C22C21/00
Inventor 张建新高爱华朱伶俐王东斌陈昊张洪良邱莎莎任晓利
Owner HENAN POLYTECHNIC UNIV