High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material

A technology of cladding material and aluminum alloy, which is applied in the field of high-strength aluminum alloy clad plate and cladding material for carrier gas brazing, can solve problems such as low production efficiency, achieve high production efficiency, improve strength and erosion resistance, avoid adverse effects

Inactive Publication Date: 2017-05-10
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although vacuum brazing can obtain high-quality devices, the production process must be brazed in a closed furnace (3.5×10-3Pa) in a near-vacuum state, and the production efficiency is extremely low.

Method used

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  • High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material
  • High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material
  • High-strength aluminum alloy composite plate for gas-carrying soldering and cladding material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The invention provides an aluminum alloy composite plate and cladding material for carrier gas brazing (CAB) containing Mg on the water-contacting side, which can improve the strength of the alloy under the premise of ensuring the corrosion performance of the material and not affecting the welding effect of carrier gas brazing . This embodiment is a three-layer aluminum alloy composite heat exchanger plate, its structure is as follows figure 1 As shown, the middle core material 2 is AA3003Mod alloy, the upper skin material 1 is AA4045, and the cladding material 3 on the water-contacting side is AA7072Mod. Among them, the AA4045 alloy contains 10.4% Si; the core material AA3003 contains 1.4% Mn, 0.6% Si, 0.7% Fe, 0.2% Cu, 0.1% Ti, and the rest is Al and unavoidable impurities; AA7072Mod alloy contains 1.2% Zn, 0.5% Mn, 0.45% Mg, 0.2% Si, 0.3% Fe, 0.02% Ti, and the rest are Al and unavoidable impurities.

[0065] The present embodiment carries out according to the follo...

Embodiment 2

[0078] This embodiment is a four-layer aluminum alloy composite heat exchanger plate, its structure is as follows figure 2 As shown, the upper skin material 1 is AA4045, the middle core material 2 is AA3003 alloy, the third layer of water-touching side cladding material 3 is AA7072Mod, and the lower skin material is also AA4045 as the upper skin material 1. Among them, the AA4045 alloy contains 10.4% Si; the core material AA3003 contains 1.5% Mn, 0.6% Si, 0.5% Fe, 0.2% Cu, 0.15% Ti, and the rest are Al and unavoidable impurities; AA7072Mod alloy contains 1.1% Zn, 0.3% Mn, 0.30% Mg, 0.5% Si, 0.6% Fe, 0.05% Ti, and the rest are Al and unavoidable impurities.

[0079] The present embodiment carries out according to the following steps:

[0080] 1) Alloy melting and casting: AA4045, AA7072 and AA3003 are cast by semi-continuous casting, and the ingot size is 450×1120×5100mm.

[0081] 2) Homogenization: AA3003 is homogenized at 600±10°C for 12-15 hours.

[0082] 3) Composite ho...

Embodiment 3

[0091] The invention provides an aluminum alloy composite plate and cladding material for carrier gas brazing (CAB) containing Mg on the water-contacting side, which can improve the strength of the alloy under the premise of ensuring the corrosion performance of the material and not affecting the welding effect of carrier gas brazing . This embodiment is a three-layer aluminum alloy composite heat exchanger plate, its structure is as follows figure 1 As shown, the middle core material 2 is AA3003 alloy, the upper skin material 1 is AA4045, and the cladding material 3 on the water-contacting side is AA7072Mod. Among them, the AA4045 alloy contains 10.4% Si; the core material AA3003 contains 1.4% Mn, 0.6% Si, 0.7% Fe, 0.2% Cu, 0.1% Ti, and the rest is Al and unavoidable impurities; AA7072Mod alloy contains 0.8% Zn, 0.6% Mn, 0.6% Mg, 0.6% Si, 0.7% Fe, 0.05% Cr, and the rest are Al and unavoidable impurities.

[0092] The present embodiment carries out according to the following...

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Abstract

The invention relates to a high-strength aluminum alloy composite plate for gas-carrying soldering and a cladding material. The cladding material is an aluminum alloy which contains the following components in percentage by mass: 0.8-1.2% of Zn, 0.3-0.6% of Mg, 0.1-0.6% of Mn and 0.1-0.7% of Fe. A core material of the composite plate made of the cladding material is AA3003, and the cladding material is composited on one side of the core material. According to the high-strength aluminum alloy composite plate for the gas-carrying soldering and the cladding material disclosed by the invention, on the premises that the requirements for the corrosion properties of the material are met, and the welding effect of the gas-carrying soldering is not influenced, the strength of the composite plate alloy is improved.

Description

technical field [0001] The invention mainly relates to an aluminum alloy plate, in particular to a high-strength aluminum alloy composite plate and cladding material for gas-carrying brazing. Background technique [0002] Aluminum alloy has excellent properties such as abundant reserves, high specific strength, high heat transfer coefficient and easy processing, and is widely used in the field of heat exchangers as heat transfer materials. In response to the country's "energy saving and emission reduction" strategy, the demand for lightweight heat exchangers is becoming increasingly strong, and the development of lighter and thinner heat exchangers has become a trend. How to achieve material thinning under the premise of ensuring strength is the current research the key of. [0003] Among them, the 3xxx series Al-Mn alloy is usually used as the core material of aluminum heat exchangers because of its good stamping performance, low yield ratio, large plasticity index, and lo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B15/20C22C21/10
CPCB32B15/016B32B15/20C22C21/10
Inventor 薛喜丽周德敬陈鑫李龙
Owner YINBANG CLAD MATERIAL
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