A kind of manufacturing method of 6101bt7 aluminum alloy thick-walled pipe conductor for electric equipment

A 6101BT7, electric equipment technology, applied in the field of aluminum alloy materials for electric equipment, can solve the problems of increased quenching sensitivity, low strength, and decreased corrosion resistance, and achieve improved mechanical properties, enhanced electrical conductivity, and high specific strength Effect

Active Publication Date: 2016-08-31
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 main strengthening elements of 6101B aluminum alloy are few and the alloy is simple, the strength is not high, but in the process of high-temperature heating, the solid solubility of the main strengthening elements increases significantly with the increase of temperature, and the alloy has obvious quenching aging strengthening effect, and the quenching range Wider, suitable for online quenching, the amount of Cu in the alloy is very small, so a small amount of Zn is added to improve the strengthening effect of the alloy, so that the strength of the 6101B alloy increases greatly, but the sensitivity to quenching increases, especially when the diameter of the pipe is larger than 100mm, the wall thickness is greater than 10mm, when the online quenching time is long, the corrosion resistance will decrease, and the manufacturing method for the 6101B aluminum alloy thick-walled pipe conductor is not suitable for the current method. Therefore, there is an urgent need for a 6101BT7Ф146×11mm (suitable for 6101BT7 different specifications of pipe) aluminum alloy thick-walled pipe conductor 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 0.52% Si, 0.24% Fe, 0.042% Cu, 0.044% Mn, and 0.54% Mg , Zn ≤ 0.093%, Cr ≤ 0.018, single impurity ≤ 0.03%, total impurity ≤ 0.10%, and the rest is Al;

[0026] The specification is Φ320mm×4000mm, and the batching calculation is based on the center line of step a when smelting six-series aluminum alloy round ingots, so as to ensure that the ingot composition is controlled within the standard range; one slag removal after melting, and one time slag removal after refining in the melting furnace 1. Slag removal once after refining in the holding furnace; degassing once after refining in the smelting furnace, degassing once after refining in the holding furnace, and degassing with a degasser after refining in the holding furnace.

[0027] b. Cut the six-series aluminum alloy round ingot wagon with a specification of Φ320mm×4000mm, cut the...

Embodiment 2

[0032] The difference between this embodiment and Example 1 is that the size of the No. 6 aluminum alloy round ingot used in step a is Φ380mm×4000mm, and the use of an ingot with a larger diameter can increase the extrusion deformation, increase the strength, and the refining degree reaches the first level Oxide film requires no metal compound segregation, Mg:Si in the chemical composition is not in accordance with the conventional ratio of 1.73:1, but Si is excess, and other steps and parameters are the same as in Example 1.

Embodiment 3

[0034] The difference between this embodiment and Example 1 is that the wool material is homogeneous, the heating temperature is 560°C, and the temperature is kept for more than 9 hours. The cooling method is: air cooling to 200°C and water cooling to room temperature. The primary oxide film requirements, other steps and parameters are the same as in Example 1.

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Abstract

The invention belongs to the technical field of aluminum alloy materials for power equipment, and specifically relates to a method for manufacturing a high-strength and high-conductivity aluminum alloy thick-walled pipe conductor for high-voltage power equipment with an inner hole passing through a high-voltage wire, specifically 6101BT7 Ф146×11mm ( Suitable for 6101BT7 pipes of various specifications) the manufacturing method of aluminum alloy thick-walled pipe conductors. The mass percentage of elements in the aluminum alloy ingot used is 0.40% to 0.55% for Si, 0.15% to 0.25% for Fe, ≤0.05% for Cu, ≤0.05% for Mn, 0.40% to 0.55% for Mg, and ≤0.05% for Zn 0.10%, Cr≤0.02, single impurity≤0.03%, total impurity≤0.10%, and the rest is Al, which can effectively solve the problem of mass production and delivery. The mechanical properties and electrical conductivity obtained by this method are stable and have been reproduced many times The operation can meet the national standard.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials for power equipment, and specifically relates to a method for manufacturing a high-strength and high-conductivity aluminum alloy thick-walled pipe conductor for high-voltage power equipment with an inner hole passing through a high-voltage wire, specifically 6101BT7 Ф146×11mm ( Suitable for 6101BT7 pipes of various specifications) the manufacturing method of aluminum alloy thick-walled pipe conductors. Background technique [0002] With the rapid development of global manufacturing technology, new technologies, new materials, new processes, and new products for the protection of power equipment and facilities emerge in an endless stream. The protection of wires and cables for long-distance transmission of high-voltage power makes power equipment use high strength and high conductivity. The demand for aluminum alloy thick-walled pipe conductors is increasing. When high-strength and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22F1/05B21C37/06
Inventor 王明星耿志学苏本显孙健毕京友
Owner SHANDONG YUHANG SPECIAL ALLOY EQUIP
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