Welding method for movable hydraulic elevator made of aluminum alloy material

A welding method and technology of aluminum alloy, applied in welding medium, welding equipment, welding equipment, etc., can solve the problems that the weld performance and surface quality are difficult to meet the design requirements, welding cracks, inclusions, etc., and optimize the welding wire material and welding process. , The effect of good weld formability and high welding speed

Inactive Publication Date: 2021-01-01
安徽飞松机械科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Defects such as pores, inclusions, and welding cracks are prone to occur during the aluminum alloy welding process, and the performance and surface quality of the weld are often difficult to meet the design requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A welding method of a mobile hydraulic lift made of aluminum alloy, the welding method of the mobile hydraulic lift made of aluminum alloy comprises the following process steps:

[0024] The welding wire used in welding contains the following elements in terms of mass percentage: 2.3% Zn, 0.35% Si, 0.25% Fe, 3.8% Mg, 0.7% Cu, 0.6% Mn, 0.18% Ti, and 0.18% Cr. 0.15%, Zr accounts for 0.13%, RE element accounts for 0.010%, the rest is Al and unavoidable impurities; the welding process includes the following steps:

[0025] (1) Before welding, polish the surface of the aluminum alloy to be welded in the range of 34-40 mm with 600, 800, and 1200 mesh silicon carbide sandpaper in sequence, and then use acetone solution to wipe the welding surface to remove oil stains and use them after removing grease Rinse twice with deionized water and dry in an oven at 120°C;

[0026] (2) Put the aluminum alloy workpiece on the test bench and weld it with the prepared welding wire. The wel...

Embodiment 2

[0040] A welding method of a mobile hydraulic lift made of aluminum alloy, the welding method of the mobile hydraulic lift made of aluminum alloy comprises the following process steps:

[0041] The welding wire used in welding contains the following elements in terms of mass percentage: 2.4% Zn, 0.36% Si, 0.28% Fe, 3.9% Mg, 0.8% Cu, 0.7% Mn, 0.19% Ti, and 0.19% Cr. 0.16%, Zr accounts for 0.14%, RE element accounts for 0.012%, the rest is Al and unavoidable impurities; the welding process includes the following steps:

[0042] (1) Before welding, polish the surface of the aluminum alloy to be welded in the range of 34-40 mm with 600, 800, and 1200 mesh silicon carbide sandpaper in sequence, and then use acetone solution to wipe the welding surface to remove oil stains and use them after removing grease Rinse twice with deionized water and dry in an oven at 125°C;

[0043] (2) Put the aluminum alloy workpiece on the test bench and weld it with the prepared welding wire. The wel...

Embodiment 3

[0057] A welding method of a mobile hydraulic lift made of aluminum alloy, the welding method of the mobile hydraulic lift made of aluminum alloy comprises the following process steps:

[0058] The welding wire used in welding contains the following elements in terms of mass percentage: Zn accounts for 2.5%, Si accounts for 0.38%, Fe accounts for 0.30%, Mg accounts for 4.0%, Cu accounts for 1.0%, Mn accounts for 0.8%, Ti accounts for 0.20%, Cr accounts for 0.18%, Zr accounts for 0.15%, RE element accounts for 0.013%, the rest is Al and unavoidable impurities; the welding process includes the following steps:

[0059] (1) Before welding, polish the surface of the aluminum alloy to be welded in the range of 34-40 mm with 600, 800, and 1200 mesh silicon carbide sandpaper in sequence, and then use acetone solution to wipe the welding surface to remove oil stains and use them after removing grease Rinse 3 times with deionized water and dry in an oven at 130°C;

[0060] (2) Put the...

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Abstract

The invention relates to the technical field of mechanical welding research, and discloses a welding method of a movable hydraulic elevator made of an aluminum alloy material. A prepared welding wireprepared by the method is used for welding the movable hydraulic elevator, the welding speed of the welding wire is high, the weld joint formability is good, and the welding wire cannot be embedded into an aluminum alloy to cause welding defects; and the mechanical property of a welding joint is guaranteed, and the problem that in the prior art, the welding protectiveness for aluminum alloy activematerials is poor is solved. According to the welding method, a welding wire material and a welding process are optimized, it is guaranteed that weld metal and a welding heat affected zone have goodmechanical properties and comprehensive properties, it is guaranteed that a welding seam has certain compactness, no air holes or included slag exists under most operation conditions, a very small number of air holes or included slag occasionally exists, but the number, the size and the shape do not exceed allowable values, cold cracks and hot cracks can be prevented from being generated in the welding joint, the formed welding seam is attractive in appearance, and has good manufacturability.

Description

technical field [0001] The invention belongs to the technical field of mechanical welding research, and in particular relates to a welding method for a mobile hydraulic lift made of aluminum alloy. Background technique [0002] Aluminum alloy and its processing materials have a series of excellent characteristics, such as low density, high specific strength and specific stiffness, good elasticity, good impact resistance, corrosion resistance, wear resistance, high electrical conductivity, high thermal conductivity, easy surface treatment, good Processing formability and high recycling and regeneration. The reserves of aluminum in the earth are extremely abundant, ranking third only after oxygen and silicon. Therefore, in the field of engineering, aluminum has always been considered as an "opportunity metal" and "hope metal", and the aluminum industry has always been considered a "sunrise industry". [0003] The hydraulic lift made of aluminum alloy is popular among users b...

Claims

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Application Information

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IPC IPC(8): B23K9/235B23K9/02B23K9/16B23K35/28B23K35/40
CPCB23K9/235B23K9/02B23K9/16B23K35/288B23K35/40
Inventor 张飞张松
Owner 安徽飞松机械科技股份有限公司
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