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Production method of small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe for heat pump

A high-frequency welding, aluminum alloy tube technology, used in high-frequency current welding equipment, welding equipment, metal processing equipment, etc. The pressure resistance does not meet the requirements and other problems, to achieve the effect of improving the production efficiency, reducing the material cost, and excellent pressure resistance

Inactive Publication Date: 2014-09-24
FOSHAN SPL PRECISION TUBING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main reason why the replacement of copper with aluminum in the heat pump industry is hindered is that the thermal conductivity and anti-corrosion performance of ordinary aluminum tubes are not good, and the pressure resistance performance cannot meet the requirements.
In order to improve thermal conductivity, reducing the wall thickness of the aluminum tube will cause the strength of the aluminum tube and the pressure resistance will not meet the requirements

Method used

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  • Production method of small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe for heat pump

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Such as figure 1 As shown, the production method flow process of the small-diameter welded pipe of the present embodiment is as follows:

[0027] (1) The aluminum alloy strip is made of a four-layer double-sided anti-corrosion structural aluminum alloy material with a thickness of 0.35mm produced by Shandong Weifang Sanyuan Aluminum Industry Co., Ltd. The four-layer double-sided anti-corrosion structural aluminum alloy material includes the first layer, the second Layer, third layer and fourth layer, the first layer is the brazing layer, choose 4045 aluminum alloy; the second layer is the anti-corrosion layer, choose 7072 aluminum alloy; the third layer is the core layer, choose 3003 aluminum alloy ; The fourth layer is the anti-corrosion layer, which is made of 7072 aluminum alloy.

[0028] (2) Double-sided decoiling step: the coiled aluminum alloy strip is uncoiled by applying force from both sides through the uncoiler.

[0029] (3) Buffer step: used to control the ...

Embodiment 2

[0040] The production method flow process of the small-caliber welded pipe of the present embodiment is as follows:

[0041] (1) The aluminum alloy strip is made of a four-layer double-sided anti-corrosion structural aluminum alloy material with a thickness of 0.8mm produced by Shandong Weifang Sanyuan Aluminum Industry Co., Ltd. The four-layer double-sided anti-corrosion structural aluminum alloy material includes the first layer, the second Layer, third layer and fourth layer, the first layer is the brazing layer, choose 4045 aluminum alloy; the second layer is the anti-corrosion layer, choose 7072 aluminum alloy; the third layer is the core layer, choose 3003 aluminum alloy ; The fourth layer is the anti-corrosion layer, which is made of 7072 aluminum alloy.

[0042] (2) Double-sided decoiling step: the coiled aluminum alloy strip is uncoiled by applying force from both sides through the uncoiler.

[0043] (3) Intermediate molding step: Send the aluminum alloy strip into t...

Embodiment 3

[0049] The production method flow process of the small-caliber welded pipe of the present embodiment is as follows:

[0050] (1) The aluminum alloy strip is made of a four-layer double-sided anti-corrosion structural aluminum alloy material with a thickness of 0.35mm produced by Shandong Weifang Sanyuan Aluminum Industry Co., Ltd. The four-layer double-sided anti-corrosion structural aluminum alloy material includes the first layer, the second Layer, third layer and fourth layer, the first layer is the brazing layer, choose 4045 aluminum alloy; the second layer is the anti-corrosion layer, choose 7072 aluminum alloy; the third layer is the core layer, choose 3003 aluminum alloy ; The fourth layer is the anti-corrosion layer, which is made of 7072 aluminum alloy.

[0051] (2) Double-sided decoiling step: the coiled aluminum alloy strip is uncoiled by applying force from both sides through the uncoiler.

[0052] (3) Intermediate molding step: Send the aluminum alloy strip into ...

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Abstract

The invention relates to a production method of a small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe for a heat pump. The production method is characterized in that an aluminum alloy strip is selected as a raw material and is sequentially treated through the following several steps of: bilateral uncoiling, molding, high-frequency welding, shaping, shearing and packing, wherein the welding current is 230-235A. The small-aperture ultrathin-walled high-frequency welded aluminum alloy pipe prepared by the production method has excellent pressure resistance, corrosion resistance, cold tolerance and heat resistance, aims at the heat-pump water heater industry which is quickly being developed in China for the first time, can be applied to a heat pump condenser (evaporator) and can replace a copper pipe to meet the high performance requirements of a heat-pump water heater.

Description

technical field [0001] The invention relates to a production method of a heat exchanger tube, in particular to a production method of an ultra-thin-wall high-frequency welded aluminum alloy tube for a small-caliber heat exchanger used in a heat pump. Background technique [0002] With the continuous increase of residents' demand for domestic hot water, the corresponding energy consumption for producing domestic hot water is also increasing. After traditional electric water heaters, gas water heaters, and solar water heaters, heat pump water heaters have quickly become a dazzling star in the water heater market and have attracted people's attention because of their safety, energy saving, convenient use, and all-weather operation. The function of the heat pump is to absorb heat from the surrounding environment, and transfer the heat to the heated object through the working medium. Like the air conditioner, it uses the reverse Carnot principle. [0003] The heat absorbed by th...

Claims

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Application Information

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IPC IPC(8): B23P15/26B23K13/00
CPCB23P15/26B23P2700/09
Inventor 王成立
Owner FOSHAN SPL PRECISION TUBING TECH CO LTD
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