Heat-resistant aluminum alloy soldering composite material and preparation method thereof

A composite material and aluminum alloy technology, which is applied in the field of heat-resistant 3003 aluminum alloy brazing composite material and its preparation, can solve the problems affecting the yield and economic benefits, collapse and metal accumulation, and warping and deformation of workpieces, and improve the resistance to Collapse properties, strength increase, effects of mechanical properties optimization

Inactive Publication Date: 2016-08-24
JIANGSU CAIFA ALUMINUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is precisely because the brazing temperature is only slightly lower than the solidus temperature of the core material 3003 at 643°C, so when the composite aluminum foil of fins such as radiators and condensers is too thin (less than 0.08-0.1mm), the core material 3003 base The material is severely softened; and at high temperature, the Si in the skin material 4343 penetrates violently into the core material, diffuses along the grain boundary to form α(Al)+Si eutectic, further increases the solidus temperature and strength of the core material, and finally causes the workpiece to warp after welding Defects such as bending deformation, heat dissipation belt erosion, blowout, collapse and metal accumulation seriously affect the yield and economic benefits

Method used

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  • Heat-resistant aluminum alloy soldering composite material and preparation method thereof
  • Heat-resistant aluminum alloy soldering composite material and preparation method thereof
  • Heat-resistant aluminum alloy soldering composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Core:

[0034] 3003 aluminum alloy, including the following composition by weight percentage: 0.70% Si, 0.4% Fe, 0.2% Cu, 1.5% Mn, 0.02% Mg, 0.1% Zr, 0.02% Cr, 0.12% Zn, 0.02% Ti, the balance is Al and unavoidable impurities.

[0035] Leather:

[0036] 4343 aluminum alloy, comprising the following composition by weight percentage: 8.7% Si, 0.2% Fe, 0.03% Cu, 0.04% Mn, 0.02% Mg, 0.08% Zr, 0.02% Cr, 0.08% Zn, 0.025% Ti, the balance is Al and unavoidable impurities.

[0037] The specific preparation method is as follows:

[0038] 1) Mix 3003 aluminum ingots with a weight fraction of 30-35% and molten aluminum with a weight fraction of 65-70% and a concentration of 99.7% at 740°C, put them into a guide furnace, put in a high-efficiency refining agent, and carry out at 680°C After the ingot casting is completed, cut the head and tail to ensure that the ingot is straight and free of casting segregation, and the thickness difference between the head, middle and tail and th...

Embodiment 2

[0046] Core:

[0047] 3003 aluminum alloy, comprising the following composition by weight percentage: 0.75% Si, 0.45% Fe, 0.1% Cu, 1.5% Mn, 0.02% Mg, 0.1% Zr, 0.02% Cr, 0.12% Zn, 0.02% Ti, the balance is Al and unavoidable impurities.

[0048] Leather:

[0049] 4045 aluminum alloy, comprising the following composition by weight percentage: 10.2% Si, 0.3% Fe, 0.02% Cu, 0.04% Mn, 0.02% Mg, 0.08% Zr, 0.02% Cr, 0.08% Zn, 0.025% Ti, the balance is Al and unavoidable impurities.

[0050] The preparation method is the same as in Example 1.

Embodiment 3

[0052] Core material, skin material composition are with embodiment 1.

[0053] When preparing, as figure 2 As shown, each layer of core material 1 and skin material 2 is fastened and welded, and the remaining methods are the same as in embodiment 1.

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Abstract

The invention discloses a heat-resistant aluminum alloy soldering composite material. The heat-resistant aluminum alloy soldering composite material comprises a core and skin, wherein the core is covered with the skin. The core is 3003 aluminum alloy. The skin is 4343 or 4045 or 4104 or 4004 aluminum alloy. Meanwhile, the invention discloses a preparation method of the heat-resistant aluminum alloy soldering composite material. Compared with an ordinary aluminum alloy soldering composite material, the heat-resistant aluminum alloy soldering composite material prepared through the method is optimized and improved on the aspect of the mechanical property, the formability of ultra-thin composite materials is improved, and the collapse resistance is improved.

Description

technical field [0001] The invention relates to an aluminum alloy brazing composite material and a preparation method thereof, in particular to a heat-resistant 3003 aluminum alloy brazing composite material and a preparation method thereof. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. It has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. It is smelted by adding different metals on the basis of pure aluminum, so Different aluminum alloys have different physical properties. Nowadays, with the rapid development of industrial economy, the demand for welded structural parts of aluminum alloys is increasing, and the research on the weldability of aluminum alloys is also in-depth. [0003] Skin material: also known as the cladding layer, which exists on one or both sides of the core material. It accounts for a small proportion of the cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40
Inventor 毕祥玉
Owner JIANGSU CAIFA ALUMINUM
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