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Novel 4Al3 aluminum alloy used for vacuum soldering

An aluminum alloy and vacuum technology, applied in welding medium, welding equipment, metal processing equipment, etc., can solve problems such as high brazing temperature and unsatisfactory brazing quality, improve quality, simplify vacuum brazing process, and enhance flow sexual effect

Active Publication Date: 2015-02-25
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a novel 4A13 aluminum alloy for vacuum brazing, which can solve the problems of high brazing temperature and unsatisfactory brazing quality of the existing 4A13 aluminum alloy used for vacuum brazing, and can solve the problem of When 4A13 aluminum alloy is vacuum brazed, it is necessary to use Mg-containing flux to remove the oxide film on the surface of the workpiece, which can simplify the vacuum brazing process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: A new type of 4A13 aluminum alloy for vacuum brazing, which contains the following materials with a total weight of 100 parts: 9 parts of silicon (Si), 0.1 part of copper (Cu), 0.2 part of manganese (Mn), magnesium (Mg) 0.08 parts, zinc (Zn) 0.1 parts, other impurities and trace elements 0.075 parts, and the rest aluminum (Al).

Embodiment 2

[0007] Embodiment 2: A new type of 4A13 aluminum alloy for vacuum brazing, which contains the following materials with a total weight of 100 parts: 8.21 parts of silicon (Si), 0.3 parts of iron (Fe), 0.1 parts of manganese (Mn), magnesium (Mg) 0.2 parts, titanium (Ti) 0.15 parts, and the rest aluminum (Al).

Embodiment 3

[0008] Embodiment 3: A new type of 4A13 aluminum alloy for vacuum brazing, which contains the following materials with a total weight of 100 parts: 8.6 parts of silicon (Si), 0.6 parts of iron (Fe), 0.2 parts of copper (Cu), magnesium (Mg) 0.14 parts, zinc (Zn) 0.2 parts, titanium (Ti) 0.075 parts, other impurities and trace elements 0.15 parts, and the rest aluminum (Al).

[0009] The processing process of a new type of aluminum alloy 4A13 for vacuum brazing of the present invention comprises the following steps: first melting, putting the aluminum ingot into the melting furnace and fully stirring after the aluminum ingot is completely melted; when the temperature of the molten aluminum reaches 760°C to After 780°C, add Si, Fe, Cu, Mn, Zn, Ti into the melting furnace sequentially according to the requirements of parts by weight for melting, then add Mg into the melting furnace for further melting, after testing the components to pass the converter refining, and finally casting...

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Abstract

The invention provides a novel 4Al3 aluminum alloy used for vacuum soldering, which can solve the problems of high soldering temperature and undesirable soldering quality of the traditional 4Al3 aluminum alloy used for vacuum soldering, and can solve the problem that a surface oxide film of a workpiece can be removed only by Mg-contained soldering flux by the 4Al3 aluminum alloy to carry out vacuum soldering, and the vacuum soldering technology can be simplified. The novel 4Al3 aluminum alloy is characterized by comprising the following raw materials according to 100 parts by weight: more than 8.2-9 parts of Si, 0-6 parts of Fe, 0-0.2 part of Cu, 0-0.2 part of Mn, 0.08-0.2 part of Mg, 0-0.2 part of Zn, 0-0.15 part of Ti, 0-0.15 part of other impurity trace elements and the balance of Al.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a novel 4A13 aluminum alloy for vacuum brazing. Background technique [0002] The components of the existing 4A13 aluminum alloys for vacuum brazing include: Si: 6.8-8.2 parts; Fe: 0-0.5 parts; Cu: 0-0.15 parts; Mn: 0-0.5 parts parts; Mg: 0 to 0.05 parts; Ti: 0 to 0.15 parts, the sum of other trace elements is less than 0.15 parts, and the rest is aluminum. The disadvantage is that due to its low silicon content, a higher brazing temperature, and its fluidity under vacuum brazing conditions is poor, the weld seam filling is not full, and the vacuum brazing quality is not ideal; in addition, because Mg is easy to volatilize and form Mg vapor after exceeding 430°C under vacuum conditions, The Mg element is more active than the Al element, so Mg vapor can agitate and break the oxide film of aluminum to achieve the effect of removing the oxide film on the surface of the work...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/28
Inventor 吕金明周德敬
Owner YINBANG CLAD MATERIAL
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