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Parallel flow tubes used for heat exchanger and manufacturing method thereof

A technology of parallel flow tubes and heat exchangers, applied in heat exchange equipment, tubular elements, lighting and heating equipment, etc., can solve problems such as poor welding, cracking of internal ribs, low blasting pressure, etc., and achieve good corrosion resistance, The effect of ensuring surface quality and inner quality

Inactive Publication Date: 2011-01-26
江苏格林威尔金属材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention also provides a manufacturing method of the above-mentioned material, which solves the problems of internal rib cracking, poor welding and low blasting pressure after thin-walled parallel flow tubes used in existing heat exchangers.

Method used

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  • Parallel flow tubes used for heat exchanger and manufacturing method thereof
  • Parallel flow tubes used for heat exchanger and manufacturing method thereof
  • Parallel flow tubes used for heat exchanger and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The chemical composition ratio of the material is:

[0022]

[0023] The method of making parallel flow tubes for heat exchangers is:

[0024] 1) Put the raw materials prepared according to the above weight ratio into the smelting furnace, and adopt the continuous casting and rolling method to produce a tightly wound round aluminum rod coil with a diameter of Φ9.5mm or Φ12.5mm;

[0025] 2) In order to reduce the strength of the round aluminum rod, meet the requirements of continuous extrusion, improve the thermoplasticity of the material, and make the alloy structure and composition more uniform. Put the round aluminum rod coil in the annealing furnace for homogeneous annealing. The annealing temperature is 520 ° C. The round aluminum rod is kept at temperature for 3 hours, then taken out, and cooled to room temperature;

[0026] 3) Straighten the round aluminum rod through the straightening device;

[0027] 4) In order to remove the oil stains, oxide scales and va...

Embodiment 2

[0032] The chemical composition ratio of the material is:

[0033]

[0034] The method of making parallel flow tubes for heat exchangers is:

[0035] 1) Put the raw materials prepared according to the above weight ratio into the smelting furnace, and adopt the continuous casting and rolling method to produce a tightly wound round aluminum rod coil with a diameter of Φ9.5mm or Φ12.5mm;

[0036] 2) In order to reduce the strength of the round aluminum rod, meet the requirements of continuous extrusion, improve the thermoplasticity of the material, and make the alloy structure and composition more uniform. Put the round aluminum rod coil in the annealing furnace for homogenization annealing, the annealing temperature is 490°C, take out the round aluminum rod after reaching the temperature for 6 hours, and cool to room temperature;

[0037] 3) Straighten the round aluminum rod through the straightening device;

[0038] 4) In order to remove the oil stains, oxide scales and va...

Embodiment 3

[0043] The chemical composition ratio of the material is:

[0044]

[0045] The method of making parallel flow tubes for heat exchangers is:

[0046] 1) Put the raw materials prepared according to the above weight ratio into the smelting furnace, and adopt the continuous casting and rolling method to produce a tightly wound round aluminum rod coil with a diameter of Φ9.5mm or Φ12.5mm;

[0047] 2) In order to reduce the strength of the round aluminum rod, meet the requirements of continuous extrusion, improve the thermoplasticity of the material, and make the alloy structure and composition more uniform. Put the round aluminum rod coil in the annealing furnace for homogeneous annealing. The annealing temperature is 480 ° C. The round aluminum rod is kept at temperature for 7 hours, then taken out, and cooled to room temperature;

[0048] 3) Straighten the round aluminum rod through the straightening device;

[0049]4) In order to remove the oil stains, oxide scales and var...

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Abstract

The invention discloses parallel flow tubes used for a heat exchanger and a manufacturing method thereof. A material of the parallel flow tubes comprises the following components in percentage by weight: 0.24 to 0.35 percent of ferrum, 0.05 to 0.12 percent of silicon, 0.005 to 0.05 percent of copper, 1.1 to 1.4 percent of manganese, 0.02 to 0.08 percent of chromium, 0.10 to 0.20 percent of magnesium, 0 to 0.10 percent of zinc, 0.010 to 0.035 percent of titanium and the balance of aluminum. The parallel flow tubes used for the heat exchanger have the characteristics of light weight, and high pressure resistance, durability and system safety. The method related to the invention solves the problems of crack inner rib, poor welding, low bursting pressure of thin wall and the like of the parallel flow tubes for the heat exchanger.

Description

technical field [0001] The invention relates to a parallel flow tube for a heat exchanger and a manufacturing method of the parallel flow tube for the heat exchanger. Background technique [0002] With the rapid development of the automobile industry, the evaporators and condensers used in automobile heat exchangers no longer use the tube-sheet structure made of copper tubes and aluminum foils, but use parallel flow porous tubes (hereinafter referred to as parallel flow tubes) and aluminum composite foils. Manufactured in advective structure, they have the advantages of small size, light weight and good heat exchange performance. [0003] Parallel flow tubes are the key material of all-aluminum microchannel heat exchangers. With the environmental protection and high efficiency of refrigerants in automotive air-conditioning systems, the pressure resistance requirements for parallel flow tubes will become higher and higher. The new generation of non-polluting CO 2 The use of ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/02F28F1/00F28F21/08
Inventor 朱俊明陆建国
Owner 江苏格林威尔金属材料科技有限公司
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