4-series aluminum alloy welding method

A welding method and aluminum alloy technology, which is applied in welding equipment, welding equipment, auxiliary welding equipment, etc., can solve the problems of incomplete cleaning of surface oil stains and welding pores, and achieve good welding effects, promote electrolysis, and increase penetration.

Inactive Publication Date: 2019-09-03
辽宁忠旺铝合金精深加工有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of welding defects such as welding pores and other welding defects due to incomplete cleaning of surface oil stains after using existing cleaning agents on the surface of 4-series aluminum alloys, the present invention provides a method for cleaning and welding the surface of 4-series aluminum alloys

Method used

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  • 4-series aluminum alloy welding method

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Embodiment 1

[0023] A kind of 4 series aluminum alloy welding method, comprises the following steps:

[0024] A. Put the aluminum profile to be welded on the belt conveyor and transport it at a transmission speed of 2m / min. During the transmission process, use an ionized water generator to spray the surface of the aluminum profile to be welded. The pH value of the ionized water is 9.35 , where C1-concentration in ionized water 4 2+ Concentration2+ The concentration is less than 0.1mg / L, the water temperature is 40°C, the nozzle is equipped with an injection pressure of 0.4MPa, and the injection time is 30s;

[0025] B. Blow cold air to the surface of the aluminum profile to remove water droplets on the surface of the aluminum profile, and blow hot air at 100°C to dry the surface of the aluminum profile;

[0026] C. Clamp and fix the dried two aluminum profiles with a specific welding tool;

[0027] D. The aluminum profile is welded by laser electron beam welding process, the electron bea...

Embodiment 2

[0029] The difference between embodiment 2 and embodiment 1 is that the pH value of the ionized water in step A is 9.45.

Embodiment 3

[0031] The difference between embodiment 3 and embodiment 1 is that the pH value of the ionized water in step A is 9.70.

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Abstract

The invention belongs to the technical field of metal welding, and relates to a 4-series aluminum alloy welding method. The 4-series aluminum alloy welding method comprises the steps that the surfacesof to-be-welded aluminum profiles are subjected to alkaline electrolysis ionized water cleaning, drying and clamping, and welded seams are formed through electron beam welding, wherein the PH value of the electrolysis ionized water is 9-10, the concentration of C1<-> in the electrolysis ionized water is smaller than 0.1mg / L, the concentration of SO4<2+> is smaller than 0.1mg / L, the concentrationof Ca<2+> is smaller than 0.1mg / L, the water temperature is 30-40 DEG C, the injection pressure of a nozzle is 0.4MPa, and injection lasts for 20-30s. The problems that after the surface of 4-series aluminum alloy is cleaned through an existing cleaning agent, the welding defects that greasy dirt on the surfaces of the aluminum profiles is not thoroughly removed, and the surfaces of the profiles after welding have bubbles are prone to occurring to the surface of the aluminum alloy are solved.

Description

technical field [0001] The invention belongs to the technical field of metal welding and relates to a welding method for 4 series aluminum alloys. Background technique [0002] Aluminum alloy is the most widely used metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. With the rapid development of science and technology and industrial economy in recent years, the demand for welded structural parts is increasing, and the research on the weldability of aluminum alloys is also in-depth. The wide application of aluminum alloy has promoted the development of aluminum alloy welding technology, and the development of welding technology has expanded the application field of aluminum alloy, so the welding technology of aluminum alloy is becoming one of the hot spots of research. [0003] Aluminum alloy has unique physical properties such as large linear expansion coefficient a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K15/00B23K37/04B23K103/10
CPCB23K15/0006B23K15/0053B23K37/0426B23K2103/10
Inventor 郝玉喜李岩吴彦霖张宏峰徐伍刚谷晗
Owner 辽宁忠旺铝合金精深加工有限公司
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