Treatment technique of aluminum alloy profiles for photovoltaic assembly supports

An aluminum alloy profile, photovoltaic module technology, applied in metal material coating process, hot dip plating process, coating and other directions, can solve the problems of low service life, high installation conditions, high load bearing of steel bracket materials, and achieve tensile strength and yield strength improvement, grain refinement, and recrystallization temperature

Active Publication Date: 2018-06-19
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Concrete brackets have the advantages of large weight and good stability, but their installation conditions are relatively high; steel bracket materials have high load capacity and low price, but are not resistant to corrosion and have a short life; aluminum alloy has the characteristics of light weight, beautiful appearance and durability, and 6061 is often used Type aluminum alloy material, but this aluminum alloy material is not suitable for acid, alkali, salt environment and areas with strong corrosion in desert saline-alkali land
At present, the power generation design requirement of photovoltaic solar panels is 25 years, and the service life of existing aluminum alloy photovoltaic supports is much lower than 25 years. Frequent maintenance or replacement seriously affects the efficiency of photovoltaic power generation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Taking 20kg as an example, according to the ratio of Al-2Mn-0.1Ca-1Cr-0.25Ta-0.25Si-0.5Mg as an example, calculate the quality of the master alloy and prepare the material.

[0025] 1) Prepare materials according to the alloy composition ratio, Mn element is added in the form of Al-Mn master alloy, Ca element is added in the form of Mg-Ca master alloy, Cr element is added in the form of Al-Cr master alloy, Ta element is added in the form of tantalum powder , Si element is added in the form of Si powder, and Mg element is added in the form of Al-Mg master alloy.

[0026] 2) After the surface of the aluminum ingot is cleaned, it is heated and smelted, and the temperature of the molten aluminum is controlled at 695°C;

[0027] 3) Add the dried Al-Mn master alloy, Mg-Ca master alloy, Al-Cr master alloy, and Al-Mg master alloy to the molten aluminum. After the molten aluminum is heated to 820°C, add Ta powder and Si powder Add it into molten aluminum and keep it warm for 15...

Embodiment 2

[0034] Taking 20kg as an example, according to the ratio of Al-1Mn-0.05Ca-0.5Cr-0.1Ta-0.1Si-0.1Mg as an example, calculate the quality of the master alloy and prepare the material.

[0035] 1) Prepare materials according to the alloy composition ratio, Mn element is added in the form of Al-Mn master alloy, Ca element is added in the form of Mg-Ca master alloy, Cr element is added in the form of Al-Cr master alloy, Ta element is added in the form of tantalum powder , Si element is added in the form of Si powder, and Mg element is added in the form of Al-Mg master alloy.

[0036] 2) After the surface of the aluminum ingot is cleaned, it is heated and smelted, and the temperature of the molten aluminum is controlled at 695°C;

[0037] 3) Add the dried Al-Mn master alloy, Mg-Ca master alloy, Al-Cr master alloy, and Al-Mg master alloy to the molten aluminum. After the molten aluminum is heated to 820°C, add Ta powder and Si powder Add it into molten aluminum and keep it warm for 1...

Embodiment 3

[0044] Taking 20kg as an example, according to the ratio of Al-3Mn-0.08Ca-1.5Cr-0.5Ta-0.5Si-1Mg as an example, calculate the quality of the master alloy and prepare the material.

[0045]1) Prepare materials according to the alloy composition ratio, Mn element is added in the form of Al-Mn master alloy, Ca element is added in the form of Mg-Ca master alloy, Cr element is added in the form of Al-Cr master alloy, Ta element is added in the form of tantalum powder , Si element is added in the form of Si powder, and Mg element is added in the form of Al-Mg master alloy.

[0046] 2) After the surface of the aluminum ingot is cleaned, it is heated and smelted, and the temperature of the molten aluminum is controlled at 695°C;

[0047] 3) Add the dried Al-Mn master alloy, Mg-Ca master alloy, Al-Cr master alloy, and Al-Mg master alloy to the molten aluminum. After the molten aluminum is heated to 820°C, add Ta powder and Si powder Add it into molten aluminum and keep it warm for 15 m...

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Abstract

The invention belongs to the field of chemical engineering materials and particularly discloses a treatment technique of aluminum alloy profiles for photovoltaic assembly supports. The technique comprises the steps of preparation of alloy raw materials, fused mixing of the alloy raw materials, refining and deslagging of molten aluminum, pouring of the molten aluminum, acid pickling of castings, plating assisting of the castings, and passivating treatment of the surfaces of the castings. According to the treatment technique, aiming at existing aluminum alloy materials, by adding metal elementssuch as Mn, Cu, Si, Mg and Ta and through reasonable formula design, the alloy strength is effectively improved, the grain refinement extent is greatly increased, and the effects on improvement of comprehensive properties such as the tensile strength, the elongation and the anti-corrosion property of aluminum alloys and the firm forming quality of oxidation films are remarkable.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to a process for processing aluminum alloy profiles for photovoltaic module brackets. Background technique [0002] Photovoltaic support is an important component for fixing solar panels. At present, the photovoltaic support system commonly used in my country is divided into three types according to the structural materials, mainly concrete support, steel support and aluminum alloy support. Concrete brackets have the advantages of large weight and good stability, but their installation conditions are relatively high; steel bracket materials have high load capacity and low price, but are not resistant to corrosion and have a short life; aluminum alloy has the characteristics of light weight, beautiful appearance and durability, and 6061 is often used Type aluminum alloy material, but this aluminum alloy material is not suitable for acid, alkali, salt environment and are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00C22F1/04C22F1/02C23C2/06C23C2/02C23C2/26
CPCC22C1/026C22C1/03C22C21/00C22F1/02C22F1/04C23C2/02C23C2/06C23C2/26
Inventor 赵磊张宇宋德锋
Owner NANJING UNIV OF SCI & TECH
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