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A coating laser pretreatment pulse welding method for titanium alloy and pure aluminum plate

A technology of laser pretreatment and titanium alloy plate, which is applied in the direction of welding medium, welding equipment, welding equipment, etc., can solve the problem of unsuitable connection and forming of large quantities of aluminum-titanium materials, inconsistent compound components and tissue sizes, large heat dissipation of titanium metal, etc. problems, to achieve the effect of homogenization of microstructure, reduction of welding heat-affected zone, and beautiful appearance of weld seam

Active Publication Date: 2015-12-23
泰州市智谷软件园有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of realizing the connection and forming of aluminum-titanium dissimilar metals, if the general simple arc brazing method is adopted, the welding process has the following disadvantages: the heat dissipation of titanium metal is large, the existing equipment is expensive, and the production cycle is long
However, this method has relatively high requirements on the welding process and parameters, and it is easy to cause inconsistency in the composition of the compound and the size of the tissue at the weld. Moreover, the welding method requires forming in a vacuum environment. From the perspective of economic productivity, the cost is relatively high, and it is not suitable for large-scale Batch aluminum titanium material connection forming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Select a Ti-6Al-4V titanium alloy plate and a 1060 pure aluminum plate with a thickness of 2.5mm, and open grooves of equal size on the sides of the two plates, and the angle of the V-shaped structure formed by the butt joint of the side grooves of the two plates 20 degrees, and then carry out surface treatment on the titanium alloy plate and the pure aluminum plate to be welded respectively. The treatment process is: use sandpaper to polish - metal cleaning liquid degreasing - water washing - dilute hydrofluoric acid corrosion - water washing - acetone Cleaning - drying to remove the oxide layer, impurities and oil stains on the surface of the plate;

[0022] 2) Prepare a solution with the following ratio: 93% industrial pure aluminum, 4% Fe and 3% Si, and then perform liquid immersion treatment on the part of the titanium alloy plate to be welded, the residence time is 22 minutes, and the heating temperature is 690 ° C to form The thickness of the aluminized layer ...

Embodiment 2

[0032] 1) Select a Ti-6Al-4V titanium alloy plate with a thickness of 3mm and a 1060 pure aluminum plate, open grooves of equal size on the sides of the two plates, and form a V-shaped structure formed by the butt joint of the side grooves of the two plates The angle is 15 degrees, and then the surface treatment is carried out on the titanium alloy plate and the pure aluminum plate to be welded respectively. The treatment process is: use sandpaper to polish——metal cleaning liquid degreasing—water washing—dilute hydrofluoric acid corrosion—water washing—— Acetone cleaning - drying to remove the oxide layer, impurities and oil stains on the surface of the board;

[0033] 2) Prepare a solution with the following ratio: 94% industrial pure aluminum, 4% Fe and 2% Si, and then perform liquid immersion treatment on the part of the titanium alloy plate to be welded, the residence time is 25 minutes, and the heating temperature is 700 ° C to form The thickness of the aluminized layer i...

Embodiment 3

[0043] 1) Select a Ti-6Al-4V titanium alloy plate and a 1060 pure aluminum plate with a thickness of 3.5mm, and open grooves of equal size on the sides of the two plates, and the side grooves of the two plates are connected to form a V shape The angle of the structure is 10 degrees, and then the surface treatment is carried out on the titanium alloy plate and the pure aluminum plate to be welded respectively. The treatment process is: use sandpaper to polish——metal cleaning liquid degreasing—water washing—dilute hydrofluoric acid corrosion—water washing ——Acetone cleaning——drying to remove the oxide layer, impurities and oil stains on the surface of the board;

[0044] 2) Prepare a solution with the following ratio: 94% industrial pure aluminum, 4% Fe and 2% Si, and then perform liquid immersion treatment on the part of the titanium alloy plate to be welded, the residence time is 28 minutes, and the heating temperature is 720 ° C to form The thickness of the aluminized layer i...

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Abstract

The invention provides a plating laser pretreatment impulse welding method of a titanium alloy plate and a pure aluminum plate. First, the titanium plate and the aluminum plate are rinsed, then a part to be welded of the titanium plate is treated in a liquid-immersed mode, and then the aluminized side edge surface to be welded of the titanium plate is pretreated, so that an interlayer stable and easier to combine is formed. Meanwhile, after the laser treatment, the surface to be welded of the titanium plate is self-cooled and quenched, finally, argon tungsten-arc welding is carried out on the titanium and the pure aluminum plate through solder wires of a specific ratio, and the titanium plate and the aluminum plate pass through the interlayer to be connected through welding. Plasticity and toughness of welding joints are improved. The operation is easy, cost is low, and the connection effect is good.

Description

technical field [0001] The invention belongs to the technical field of welding of dissimilar materials, in particular to a coating laser pretreatment pulse welding method of a titanium alloy and a pure aluminum plate. Background technique [0002] Titanium alloy has many excellent characteristics such as light weight, high strength, strong heat resistance and corrosion resistance. It is known as "the metal of the future" and is a new type of structural material with development prospects. The application of titanium alloy involves many fields, and the application in the aerospace field is the most prominent. Aluminum and its alloys are the main structural materials in aircraft manufacturing. Most of the key bearing parts (such as wings, shells, empennages, etc.) Important applications, and have begun to be widely used in many industrial sectors such as chemical industry, petroleum, light industry, metallurgy, and power generation. Aluminum has the advantages of high specif...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/167B23K9/235B23K9/23B23K9/095B23K35/28
Inventor 吴刚
Owner 泰州市智谷软件园有限公司