Aluminum alloy welding wire containing Ga and Pr and manufacturing method and application thereof

A technology of aluminum alloy welding wire and production method, which is applied in the direction of welding medium, manufacturing tools, welding equipment, etc., can solve the problems that the strength of the weld is lower than that of the base material, the pores of the weld, and the crack of the weld, etc., and achieve a high weld strength coefficient , The effect of fewer weld pores and less weld cracks

Active Publication Date: 2019-04-12
ZHEJIANG YUGUANG ALUMINUM MATERIALS
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, driven by the demand for "lightweight manufacturing" of high-speed rail and light rail trains, the application of high-strength aluminum alloys has become more and more widespread. However, the welding problems of high-strength aluminum alloys have not been well resolved, especially weld porosity. problems, weld cracks and weld strength lower than the base metal, seriously restricting the application of high-strength aluminum alloys
[0003] Typical Al-Mg aluminum welding wire (for example, the Mg content of 5356 aluminum welding wire is in the range of 4.5-5.5%) has a large solubility for hydrogen during smelting, and the hydrogen content is sensitive to the "drawing" of Al-Mg aluminum welding wire, which is very easy to Cause broken wire, thus affecting the drawing processing efficiency; when welding by MIG, TIG and other methods, the excessive hydrogen content in the Al-Mg welding wire will easily cause pores in the weld, thereby reducing the mechanical properties of the weld and even cracking the weld. problem

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An aluminum alloy welding wire containing Ga and Pr, its chemical composition is: 0.01% Ga, 0.01% Ga 2 o 3 , 0.01% Pr, 0.01% Pr 2 o 3 , 4.5% Mg, the balance is Al, the wire processing performance is excellent.

[0037] The preparation method of the aluminum alloy welding wire comprises the following steps:

[0038] S1. Add corresponding proportions of aluminum ingots, magnesium ingots, metal Ga, gallium trioxide, metal Pr, and dipraseodymium trioxide to the resistance furnace for smelting. During smelting, add covering agent, degasser smelting, and continuous casting to obtain rods (wire) material;

[0039] S2, annealing;

[0040] S3, peeling and drawing to obtain a wire.

[0041] After cleaning and loading, the welding wire that can be used for automatic welding can be obtained. It can also be straightened and cut to obtain straight wire. The resulting welding wire has excellent processing performance and can be used for MIG welding, TIG welding, laser welding an...

Embodiment 2

[0048] An aluminum alloy welding wire containing Ga and Pr, its chemical composition is: 0.5% Ga, 0.5% Ga 2 o 3 , 0.5% Pr, 0.5% Pr 2 o 3 , 6.2% Mg, the balance is Al, the wire processing performance is excellent, and the rest are the same as in Example 1. Use a welding wire with a diameter of 2mm to weld a 5A06 aluminum alloy test plate with a thickness of 1.5mm. The welding current is 280A, the welding arc voltage is 24V, the argon gas flow rate is 22L / min. (L / min), and TIG welding is used for butt welding , the weld has undergone X-ray flaw detection and meets the requirements of Class I welded joints specified in GB / T3323-2005 "Radiography of Metal Fusion Welded Joints". The tensile strength of the weld is 400MPa±20MPa.

Embodiment 3

[0050] An aluminum alloy welding wire containing Ga and Pr, its chemical composition is: 0.2% Ga, 0.2% Ga 2 o 3 , 0.2% Pr, 0.2% Pr 2 o 3 , 5.2% Mg, the balance is Al, the wire processing performance is excellent, and the rest are the same as in Example 1. Use a welding wire with a diameter of 2mm to weld a 5A06 aluminum alloy test plate with a thickness of 1.5mm. The welding current is 280A, the welding arc voltage is 24V, the argon gas flow rate is 22L / min. (L / min), and TIG welding is used for butt welding , the weld has undergone X-ray flaw detection and meets the requirements of Class I welded joints specified in GB / T3323-2005 "Radiography of Metal Fusion Welded Joints". The tensile strength of the weld is 400MPa±20MPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention provides an aluminum alloy welding wire containing Ga and Pr and a manufacturing method and application thereof, belongs to the technical field of material processing engineering, and solves the problem that the welding effect is poor when an existing aluminum alloy welding wire is welded with an aluminum alloy section bar. The aluminum alloy welding wire containing Ga and Pr comprises the components of, by mass percentage, 0.01-0.5% of Ga, 0.01-0.5% of Ga2O3, 0.01-0.05% of Pr, 0.01-0.5% of Pr2O3, 0.01-0.5% of Mg, and the balance Al. According to the aluminum alloy welding wire containing Ga and Pr and the manufacturing method and application thereof, trace of Ga and Pr are added, and the problem of hydrogen dissolution during smelting and welding of an Al-Mg aluminum weldingwire is solved, so that the hydrogen content in an aluminum alloy wire is greatly reduced; and when the welding wire is used in welding, the weld seam porosity is less, the weld seam crack is less, and the weld seam strength coefficient is high and close to the base metal strength.

Description

technical field [0001] The invention belongs to the technical field of material processing engineering and relates to a welding material, in particular to an aluminum alloy welding wire containing Ga and Pr, a production method and application thereof. Background technique [0002] At present, in the hardware industry, home appliance industry, refrigeration industry, and automobile industry, a large number of high-strength aluminum alloy structures are used. In recent years, driven by the demand for "lightweight manufacturing" of high-speed rail and light rail trains, the application of high-strength aluminum alloys has become more and more widespread. However, the welding problems of high-strength aluminum alloys have not been well resolved, especially weld porosity. problems, weld cracks, and weld strength lower than the base metal, seriously restricting the application of high-strength aluminum alloys. [0003] Typical Al-Mg aluminum welding wire (for example, the Mg con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/28B23K35/40
CPCB23K35/286B23K35/40
Inventor 韩翼龙费文潘林中强
Owner ZHEJIANG YUGUANG ALUMINUM MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap