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Method for manufacturing welding wires matched with 5A01 alloy thick plates

A manufacturing method and technology for thick plates, applied in manufacturing tools, welding media, welding equipment, etc., can solve the problems of low strength and low corrosion resistance of welded joints, and achieve good surface quality, comprehensive mechanical properties, and good welding performance. Effect

Active Publication Date: 2013-12-25
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problems of low weld joint strength and low corrosion resistance of 5A01 alloy thick plate matching welding wire used in existing ships, and provides a manufacturing method of 5A01 alloy thick plate matching welding wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0017] Specific implementation mode one: this implementation mode is a kind of manufacturing method of 5A01 alloy thick plate matching welding wire, specifically is finished according to the following steps:

[0018] 1. Preparation of aluminum alloy solution: first, according to the mass fraction of 5.4%~6.1%Mg, 0.12%~0.18%Cr, 0.01%~0.1%Cu, 0.3%~0.6%Mn, 0.0001%~0.15%Ti, 0.11%~0.19 %Zr, 0.01%~0.25%Zn, 0.01%~0.15%Si, 0.01%~0.2%Fe and the balance is aluminum Weighing aluminum ingot, aluminum-manganese alloy, aluminum-zirconium alloy, aluminum-titanium alloy, aluminum-chromium alloy, copper Ingots and magnesium ingots, and then smelted in a melting furnace at a temperature of 720°C to 760°C for 3h to 4h to obtain an alloy melt;

[0019] 2. Preparation of cast rods: under the conditions of casting temperature of 725°C-745°C, casting speed of 80mm / min-85mm / min, cooling water temperature of 10°C-20°C and cooling water strength of 0.01MPa-0.03MPa The aluminum alloy solution obtained ...

specific Embodiment approach 2

[0030]Specific embodiment two: the differences between this embodiment and specific embodiment one are: the mass fraction in step one is 5.8%Mg, 0.14%Cr, 0.01%~0.05%Cu, 0.5%Mn, 0.0054%Ti, 0.14%Zr, 0.01 %~0.25%Zn, 0.09%Si, 0.18%Fe and the balance is aluminum. Weigh aluminum ingots, aluminum-manganese alloys, aluminum-zirconium alloys, aluminum-titanium alloys, aluminum-chromium alloys, copper ingots and magnesium ingots, and then heat them at a temperature of 740 ℃ in a melting furnace for 3.5 hours to obtain an alloy melt; other steps are the same as in Embodiment 1.

specific Embodiment approach 3

[0031] Specific embodiment 3: The difference between this embodiment and one of specific embodiments 1 to 2 is that in step 2, the casting temperature is 730°C, the casting speed is 82mm / min, the cooling water temperature is 15°C and the cooling water strength is 0.02MPa Cast the aluminum alloy solution obtained in step 1 into a cast rod with a diameter of 162 mm under certain conditions. Other steps are the same as those in Embodiments 1 to 2.

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Abstract

The invention discloses a method for manufacturing welding wires matched with 5A01 alloy thick plates, and relates to a method for manufacturing aluminum alloy welding wires. The method aims to solve problems of low strength and corrosion resistance of welded joints of existing welding wires matched with 5A01 alloy thick plates for ships. The method includes steps of firstly, preparing aluminum alloy molten liquid; secondly, manufacturing cast bars; thirdly, manufacturing aluminum alloy ingots; fourthly, performing annealing; fifthly, heating the aluminum alloy ingots; sixthly, manufacturing aluminum alloy extruded wires; seventhly, performing intermediate annealing; eighthly, performing stretching; ninthly, performing brightening processing. The method has the advantages that the tensile strength of welded joints reaches 255N / mm<2>, the disproportional extension strength of the welded joints is 115N / mm<2>, and post-breakage elongation percentage of the welded joint is 6%; the exfoliation corrosion resistance of the welded joints is higher than an E class, stress applied to welded joint test samples for stress corrosion resistance tests is 95%R<p0.2> of stress applied to existing welded joints, and anodic corrosion lives of the welded joint samples are longer than 300min. The method is mainly used for manufacturing the welding wires matched with the 5A01 alloy thick plates.

Description

technical field [0001] The invention relates to a method for manufacturing aluminum alloy welding wire. Background technique [0002] At present, 5A01 alloy thick plates are mainly used as structural components on ships, aircraft carriers or spacecraft that require high strength and good weldability. A matching welding wire is required, and the tensile strength of the welded joint of this matching welding wire is required to reach 235N / mm 2 , non-proportional extension strength 115N / mm 2 , The elongation after fracture is 6%, the spalling corrosion resistance of the welded joint is greater than E grade, and the stress corrosion resistance of the welded joint sample is 95% R of the welded joint p0.2 , its anodic corrosion life ≥ 300min, but the welding wire produced by the existing process cannot meet the application requirements of 5A01 alloy thick plate. Contents of the invention [0003] The invention aims to solve the problems of low weld joint strength and low corro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/40
Inventor 韩颖吕新宇刘显东张克伟从福官王志超吕丹王海彬罗潇
Owner NORTHEAST LIGHT ALLOY CO LTD