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Aluminum alloy for transmission tower auxiliary frame structure and preparation method thereof

A technology for transmission towers and aluminum alloys, which is applied in the field of aluminum alloy casting and can solve problems such as inapplicability of aluminum alloys

Active Publication Date: 2020-10-20
福建祥鑫股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing aluminum alloys are not suitable for manufacturing auxiliary structures of power transmission towers, and provides an aluminum alloy for auxiliary frame structures of power transmission towers and its preparation method

Method used

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specific Embodiment approach 1

[0015] Specific Embodiment 1: In this embodiment, an aluminum alloy for a power transmission tower auxiliary frame structure is composed of 5-6.1% Zn, 1.2-1.9% Mg, 0.1-0.3% Mn, 0.05-0.25% Cu, 0.05-0.25% Zr, 0.02-0.1% Ti, Fe≤0.25%, Si≤0.15%, the balance is composed of Al and other unavoidable impurity elements; the total mass of other unavoidable impurity elements does not exceed 0.15% of the total mass of the alloy.

specific Embodiment approach 2

[0016] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the aluminum alloy used for the transmission tower auxiliary frame structure is composed of 5.8% Zn, 1.8% Mg, 0.15% Mn, 0.2% Cu, and 0.1% Zr by mass percentage , 0.08% Ti, 0.18% Fe, 0.1% Si, and the balance is composed of Al and other unavoidable impurity elements; the total mass of other unavoidable impurity elements does not exceed 0.15% of the total mass of the alloy. Others are the same as the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the sum of the contents of Mn, Zr and Ti in the aluminum alloy used for the auxiliary frame structure of transmission towers is greater than 0.25%. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses an aluminum alloy for an auxiliary frame structure of a transmission tower and a preparation method thereof and relates to the field of aluminum alloy casting, in particular to an aluminum alloy for an auxiliary frame structure of a transmission tower and a preparation method thereof. The invention aims to solve the problem that an existing aluminum alloy is not suitable for manufacturing the auxiliary frame structure of the transmission tower. The aluminum alloy is prepared from the following components in percent by mass: 5-6.1% of Zn, 1.2-1.9% of Mg, 0.1-0.3% of Mn, 0.05-0.25% of Cu, 0.05-0.25% of Zr, 0.02-0.1% of Ti, less than or equal to 0.25% of Fe, less than or equal to 0.15% of Si and the balance of Al and other inevitable impurity elements. The preparation method comprises the following steps: I, material preparation; II, smelting; III, two-stage refining; IV, coordinated deterioration; and V, casting. The preparation method provided by the invention is used for casting a high strength aluminum alloy for the auxiliary frame structure of the transmission tower.

Description

technical field [0001] The invention relates to the field of aluminum alloy casting, in particular to an aluminum alloy for an auxiliary frame structure of a power transmission tower and a preparation method thereof. Background technique [0002] At present, most of the transmission poles and towers in my country are made of steel, and the national transmission lines have long paths, wide coverage, complex terrain and environment along the way, and many high mountain areas. Therefore, the transportation of heavy tower components is almost all completed by manpower and animal power, which is difficult and has high construction costs. At the same time, transmission towers have been subjected to atmospheric conditions for a long time. Harsh environments such as rain and snow also have extremely high requirements on its own anti-corrosion performance. However, the current anti-corrosion treatment methods for the surface of towers also have environmental pollution problems. [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/03C22C1/06C22F1/053
CPCC22C1/026C22C1/03C22C1/06C22C21/10C22F1/053
Inventor 黄铁兴黄铁明冯永平刘金霞池海涛戴应鑫
Owner 福建祥鑫股份有限公司
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