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Smelting preparation method suitable for Mo 4000 series aluminum alloy cast ingot

A technology for casting aluminum alloy ingots and aluminum ingots, which is applied in the field of non-ferrous metal material preparation. It can solve problems such as low yield rate and Mo element segregation, and achieve the effects of increasing yield rate, solving difficult problems in melting and casting, and simple operation.

Pending Publication Date: 2022-04-12
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that Mo element segregation is prone to occur in the traditional casting process of Mo-containing aluminum alloys, which leads to the low yield rate, and to provide a method suitable for ingots of Mo-containing 4000 series aluminum alloys. Melting preparation method

Method used

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  • Smelting preparation method suitable for Mo 4000 series aluminum alloy cast ingot
  • Smelting preparation method suitable for Mo 4000 series aluminum alloy cast ingot
  • Smelting preparation method suitable for Mo 4000 series aluminum alloy cast ingot

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specific Embodiment approach 1

[0016] Specific Embodiment 1: In this embodiment, a method for smelting and preparing Mo-containing 4000 series aluminum alloy ingots is carried out according to the following steps:

[0017] 1. Weighing: Mo is 0.10-1.0%, Si is 9-10%, Mn<0.80%, Fe<0.20%, Cu<0.05%, Mg<0.05%, Sr<0.02%, single impurity< 0.05%, the total amount of impurities is less than 0.10%, and the balance is Al. Weigh aluminum ingots, Al-Si20 master alloys, Al-Mo5 master alloy particles and Al-Sr10 master alloys respectively; the content of Mo in Al-Mo5 master alloy particles is ≤5 %.

[0018] 2. Put the aluminum ingot and Al-Si20 master alloy in the melting furnace and heat until completely melted. When heating continues to 800-810°C, add Al-Mo5 master alloy particles into the melting furnace, and then heat it at a temperature of 800-810°C. Keep warm for 15-25 minutes under the same conditions. After the heat preservation is over, add the modification agent Al-Sr10 intermediate alloy to modify the aluminum ...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass fraction of Mo in step 1 is 0.10-0.20.

[0024] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the mass fraction of aluminum in the aluminum ingot is 99.70%.

[0026] Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a smelting preparation method suitable for a Mo 4000 series aluminum alloy cast ingot, and relates to the technical field of nonferrous metal material preparation. The invention aims at solving the problem that the casting yield is low due to the fact that the Mo element segregation condition is prone to occurring in the traditional casting process of the Mo-containing aluminum alloy. The method comprises the following steps: heating an aluminum ingot and an Al-Si20 intermediate alloy until the aluminum ingot and the Al-Si20 intermediate alloy are completely molten, adding Al-Mo5 intermediate alloy particles, keeping the temperature, adding an Al-Sr10 intermediate alloy, modifying an aluminum alloy melt, stirring, continuously heating, analyzing and adjusting alloy components, refining and degassing by using inert gas after the components are qualified, filtering, and casting, and a grain refiner is added during casting, and homogenization treatment is carried out after casting is completed, so that the Mo 4000 series aluminum alloy cast ingot is obtained. The smelting preparation method suitable for the Mo 4000 series aluminum alloy cast ingot can be obtained.

Description

technical field [0001] The invention relates to the technical field of preparation of nonferrous metal materials, in particular to a method for smelting and preparing Mo-containing 4000 series aluminum alloy ingots. Background technique [0002] Mo element is widely used in the field of iron and steel, and it is in the development stage in the application of deformed aluminum alloys. The 4000 series alloy welding wire containing Mo can improve the tensile strength and hardness of the welding part, and is beneficial to the high weldability and corrosion resistance of the welding part. , These newly developed 4000 series welding wires for welding can contain up to 1% Mo content. [0003] Since Mo is a dense element, precipitation and local segregation of Mo element are prone to occur during the smelting and casting process of aluminum alloy materials, and the segregation of Mo during the casting process will cause inhomogeneous chemical composition and structure. Since Mo is ...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C1/03C22C1/06C22F1/043
Inventor 刚建伟张立君陈雷贾宁袁丹丹曹永亮罗建华刘世雷
Owner NORTHEAST LIGHT ALLOY CO LTD
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