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Copper alloy pipe for air conditioner

A copper alloy and air conditioner technology, applied in the field of metal materials, can solve the problems of unsatisfactory application, unsatisfactory corrosion resistance, low strength of pure copper tubes, etc., to improve crystal structure composition, fine and uniform particle size, and improve ductility. Effect

Inactive Publication Date: 2013-03-20
NINGBO FUSHI AUTOMOBILE COMPONENTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air-conditioning tubes currently in use are basically dephosphorized pure copper tubes. Although the pure copper air-conditioning tubes have the advantages of high heat exchange efficiency and strong corrosion resistance, there are indeed problems such as cracks or leakage at the welds, and the corrosion resistance is also poor. It cannot meet the existing technical requirements. At the same time, the strength of pure copper pipes is low, which leads to a decrease in the service life of air-conditioning pipes
[0003] Especially with the development of thin-walled air-conditioning pipes, the requirements for product strength, plasticity and corrosion resistance have all increased, and air-conditioning pipes made of copper materials can no longer meet the applications in this field.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A copper alloy pipe for air conditioner, which is composed of 0.02% phosphorus, 0.01% titanium, 0.02% manganese, 0.002% rare earth metal containing yttrium and lanthanum and the balance copper in weight percentage.

Embodiment 2

[0016] A copper alloy tube for air conditioner, which is composed of 0.03% phosphorus, 0.03% titanium, 0.05% manganese, 0.0025% rare earth metal containing yttrium and lanthanum and the balance copper by weight percentage.

Embodiment 3

[0018] A copper alloy tube for air conditioner, which is composed of 0.025% phosphorus, 0.02% titanium, 0.03% manganese, 0.0022% rare earth metal containing yttrium and lanthanum and the balance copper by weight percentage.

[0019] Put pure copper in an electric furnace to heat and melt, and then add titanium-copper master alloy, manganese-copper master alloy, copper rare earth master alloy and phosphor-copper master alloy calculated according to the composition in sequence, and cast into round copper ingots after full melting.

[0020] The round copper ingot is processed to obtain a heat exchange tube for air conditioning.

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PUM

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Abstract

The invention relates to a copper alloy pipe for an air conditioner, comprising the following components by weight percent: 0.02-0.03% of phosphorus, 0.01-0.03% of titanium, 0.02-0.05% of manganese, 0.002-0.0025% of rare-earth metals containing yttrium and lanthanum and the balance of copper. Manganese, titanium and rare-earth metals are added to pure copper so that the internal crystal structure of the copper alloy can be improved and the grain diameter of the crystal grains is finer and evener; and as a result, the ductility is improved while the strength is improved.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to a copper alloy pipe material for air conditioners. Background technique [0002] Copper pipes for air conditioners are pipes specially used for heat exchange in air conditioners and refrigeration systems. The air-conditioning pipes currently in use are basically dephosphorized pure copper pipes. Although pure copper air-conditioning pipes have the advantages of high heat exchange efficiency and strong corrosion resistance, there are problems such as cracking or leakage at the welding point, and the corrosion resistance is not good. The existing technical requirements cannot be met, and at the same time, the strength of the pure copper pipe is low, thereby reducing the service life of the air-conditioning pipe. [0003] Especially with the thin-walled development of air-conditioning pipes, the requirements for product strength, plasticity and corrosion resistance have increased, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/00C22C9/05C22C1/03
Inventor 董阿能毛再娜白永洁
Owner NINGBO FUSHI AUTOMOBILE COMPONENTS