Production method of aluminum alloy sheet plate for welding

A production method and aluminum alloy technology, which is applied in the production field of aluminum alloy plates, can solve problems such as poor welding performance and edge cracking of aluminum alloys, and achieve the effects of improving welding performance, refining grains, and solving desoldering

Active Publication Date: 2019-03-15
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems of poor welding performance and edge cracking during the rolling process of the existing al

Method used

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  • Production method of aluminum alloy sheet plate for welding
  • Production method of aluminum alloy sheet plate for welding
  • Production method of aluminum alloy sheet plate for welding

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specific Embodiment approach 1

[0030] Specific implementation mode one: the production method of the aluminum alloy sheet for welding in this embodiment is carried out according to the following steps:

[0031] 1. Si: 11.5-12% by weight, Mn: 0.05-0.1%, Zn: 0.1-0.15%, Ti: 0.01-0.03%, and the balance is Al to weigh aluminum-silicon master alloy, aluminum-manganese master alloy, Aluminum-zinc master alloy, aluminum-titanium master alloy and metal aluminum are used as smelting raw materials, and the smelting raw materials are prepared into aluminum alloy solution;

[0032] 2. Add a sodium salt modifier to the aluminum alloy solution obtained in step 1, and perform melting and casting to obtain an aluminum alloy ingot;

[0033] The sodium salt modificator consists of 74-76% NaC and the rest NaC by mass fraction 3 AlF 6 mixed;

[0034] 3. Milling the aluminum alloy ingot;

[0035] 4. Heating step 3: milling the aluminum alloy ingot after plane treatment, and then transferring it to a hot rolling mill for hot ...

specific Embodiment approach 2

[0044] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the melting temperature in the preparation process of the aluminum alloy solution in Step 1 is 680-720°C. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0045] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the aluminum alloy solution described in step 2 adopts a semi-continuous casting method, the casting temperature is 680-720°C, and the casting speed is 55-60mm / min, the casting cooling water pressure is 0.008~0.15MPa, and the cooling water temperature is 20~26°C. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a production method of an aluminum alloy sheet plate for welding, and relates to a production method of an aluminum alloy sheet. The method of the aluminum alloy sheet plate for welding aims to solve the problems that the welding performance of 0 state aluminum alloys for welding is poor and edge parts crack in the rolling process. The production method of the aluminum alloy sheet plate for welding comprises the following steps of 1, weighing smelting raw materials to prepare an aluminum alloy solution; 2, carrying out the fusion casting to obtain aluminum alloy cast ingots; 3, carrying out the plane milling treatment to the aluminum alloy cast ingots; 4, heating and then carrying out the hot rolling to obtain hot rolled semi-finished products; 5, carrying out the cold rolling to obtain semi-finished strips; 6, annealing the semi-finished strips; 7, carrying out the cold rolling to the semi-finished strips till the design thickness after annealing; and 8, annealing finished strips. According to the production method of the aluminum alloy sheet plate for welding, sodium salt modifiers are added during casting, the finished product annealing is carried out, and techniques of the casting, the hot rolling, the cold rolling, the intermediate annealing, the cold rolling and the annealing are sequentially carried out in the preparation process, so that the problem that the edge parts crack in the rolling process is solved, the problem that the uneven distribution of components leads to desoldering in the welding process, and the welding performance is improved. The method of the aluminum alloy sheet plate for welding is suitable for preparing the aluminum alloy sheet plate.

Description

technical field [0001] The invention relates to a production method of an aluminum alloy plate. Background technique [0002] The existing O-state aluminum alloys for welding have the characteristics of medium strength, good corrosion resistance, wear resistance, low melting point, good welding performance and easy processing and forming, and are typical alloys in Al-Si alloys. O-state aluminum alloy sheets are currently widely used in fields such as welding materials. At present, the production process of O-state thin plates for welding has the problems of edge cracking and poor welding performance in the rolling process. In the existing production process, when the plate is hot-rolled, the temperature of the edge is too low or the composition segregation leads to the generation of segregation nodules, which will cause the edge of the plate to crack during the rolling process, and the uneven distribution of the plate components will easily lead to desoldering during the we...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C1/02C22C21/02C22C1/06C22F1/043
CPCC22C1/026C22C1/03C22C1/06C22C21/02C22F1/043
Inventor 车德财韩冰冯超徐洋谭树栋刘玉龙邱大伟马月
Owner NORTHEAST LIGHT ALLOY CO LTD
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