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Manufacturing method of 6063T6 aluminum alloy large-scale bar for power equipment

A technology of electric equipment and manufacturing method, which is applied to the manufacture of high-strength and high-conductivity aluminum alloy large-scale rods, high-strength and high-conductivity large-scale electrical components, and the field of 6063T6 aluminum alloy rods with a diameter greater than 150mm to 300mm, which can solve the problem of increased quenching sensitivity , Decreased corrosion resistance, difficulty in increasing strength, etc., to achieve the effect of unchanged corrosion resistance, improved production efficiency, and strong tendency to resist intergranular corrosion

Active Publication Date: 2014-10-29
SHANDONG YUHANG SPECIAL ALLOY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that the 6063T6 aluminum alloy has few main strengthening elements, the alloy is simple, and it is difficult to increase the strength, but in the process of high-temperature heating, the solid solubility of the main strengthening elements increases significantly with the increase of temperature. The alloy has obvious quenching aging strengthening effect, and the quenching range is wide. For online quenching, when a small amount of Cu is added to the alloy, the strength of the 6063 alloy is close to that of duralumin, and the strength increases greatly. When other impurity elements are controlled, the conductivity is improved, but the sensitivity to quenching is increased, especially if the diameter is larger than For 150mm bars, when the online quenching time is long, the corrosion resistance will decrease. The preparation method for large-size bars of 6063T6 aluminum alloy is not suitable for the current method. Therefore, there is an urgent need for a large-size bar of 6063T6 aluminum alloy for power equipment. material manufacturing method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. The cast aluminum alloy is a six-series aluminum alloy round ingot. The mass percentage of elements in the aluminum alloy ingot used is 0.42% Si, 0.095% Fe, 0.092% Cu, 0.090% Mn, and 0.58% Mg , Zn is 0.04%, Ti is 0.03%, Cr is 0.09%, single impurity ≤ 0.05%, total impurity ≤ 0.15%, and the rest is Al; the specification is Φ520mm×4000mm, and the ingredients are calculated by The center line of step a is used as the basis to ensure that the composition of the ingot is controlled within the standard range; slag removal once after melting, once after refining in the smelting furnace, once after refining in the holding furnace; degassing and heat preservation once after refining in the melting furnace One degassing after furnace refining, and one degassing machine degassing after holding furnace refining.

[0026] b. Cut the six-series aluminum alloy round ingot wagon with a specification of Φ520mm×4000mm, cut the head, cut the tail, take the lower magnification, chemical ...

Embodiment 2

[0031] The difference between this embodiment and Example 1 is that the size of the six-series aluminum alloy round ingot is Φ600mm×4000mm, and the size of the wool material is: Φ582mm×1800mm, and the degree of deformation can be increased by using the Φ582mm ingot.

[0032]The No. 6 aluminum alloy round ingot used in step a has a refining degree that meets the requirements of the primary oxide film, no metal compound segregation, and the ratio of Mg:Si in the chemical composition does not follow the principle of 1.73:1, resulting in excess Si, Fe, Zn , The smaller the composition of the Ti alloy, the better. In order to improve the purity of the 6063 alloy and increase the electrical conductivity; add Cu element and control it at the upper line of the standard to significantly improve the mechanical properties, and Cu can neutralize the adverse effects of Ti on the electrical conductivity; The Mn element is controlled on the upper line, which can eliminate the adverse effects ...

Embodiment 3

[0034] The difference between this embodiment and Example 1 is that the wool is homogeneous, the heating temperature is 560°C, and the heat preservation is 9 hours. The cooling method is: air cooling to 200°C and then spraying water to cool to room temperature. Check the oxide film at low magnification and check the compound segregation. Satisfy the requirements of the primary oxide film, other steps and parameters are the same as in Example 1.

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PUM

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Abstract

The invention belongs to the technical field of aluminum alloy materials for power equipment, and particularly relates to a manufacturing method of a high-strength high-conductivity aluminum alloy large-scale bar. A 6063 high-strength high-conductivity large-specification bar is used for processing a high-strength high-conductivity large electric element in power equipment, particularly a 6063T6 aluminum alloy bar with a diameter over 150-300mm. A sixth-system round aluminum alloy ingot is adopted and contains the following elements in percentage by mass: 0.40-0.44% of Si, less than or equal to 0.13% of Fe, less than or equal to 0.1% of Cu, less than or equal to 0.10% of Mn, 0.55-0.60% of Mg, less than or equal to 0.05% of Zn, less than or equal to 0.05% of Ti, less than or equal to 0.10% of Cr, less than or equal to 0.05% of single impurity, less than or equal to 0.15% of all impurities and the balance of Al. The problems in production and delivery can be effectively solved, the strength and conductivity of the large-specification aluminum alloy bar are improved, and the processing and application are facilitated; by adopting the method, the mechanical properties and conductivity are stable; and through repeated reproduction operations, the national standard for a diameter below 150mm can be met, the national standard for bars with diameters over 150-300mm can be supplemented or completed, and all performance indexes are introduced into the national standard.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials for electric power equipment, and in particular relates to a method for manufacturing a large-size high-strength high-conductivity aluminum alloy rod, which utilizes 6063 high-strength, high-conductivity large-size rods to process high-strength, high-conductivity large-scale electrical components in power equipment, Specifically, it is a 6063T6 aluminum alloy bar with a diameter greater than 150 mm to 300 mm. Background technique [0002] With the rapid development of the world's machinery manufacturing technology, new technologies, new materials, new processes, and new products emerge in an endless stream. High-strength, high-conductivity aluminum alloy large-size rods are used as billet materials for large-scale electrical components with high strength and high conductivity. The demand for high-strength and high-conductivity large-scale electrical components requires high-streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/047C22C21/08B21C37/04
Inventor 王呈刚宋微许辉张建忠蔡文宗苏本显
Owner SHANDONG YUHANG SPECIAL ALLOY EQUIP
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