Manufacturing method for super-large-sized aluminium alloy flat ingot casting

A technology of super-large size and manufacturing method, which is applied in the field of manufacturing aluminum alloy flat ingots, can solve the problems that small-sized ingots cannot meet the use requirements, and achieve the effect of ensuring surface quality

Inactive Publication Date: 2013-02-06
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 aims to solve the problem that traditional small-sized ingots cannot meet the requirements of use, thereby providing a method for manufacturing super-large-sized aluminum alloy flat ingots

Method used

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Examples

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Effect test

specific Embodiment approach 1

[0013] Embodiment 1: The manufacturing method of a super-sized aluminum alloy flat ingot of the present embodiment is realized according to the following steps:

[0014] 1. Smelting: Weigh the smelting raw materials according to the mass fraction of Mn: 0.60%-0.90%, Mg: 4.40%-4.80%, Cr: 0.05%-0.10%, Be: 0.0004%-0.0008% and the balance of Al , melt all the smelting raw materials, and then stir and smelt for 5min-10min at 720℃~750℃ and the stirring speed is 1m / s~1.5m / s, to obtain the aluminum alloy melt;

[0015] 2. Forming: The aluminum alloy melt prepared in step 1 is introduced into a static furnace, refined and left to stand to obtain a casting melt, and then the semi-continuous casting method is used to make the casting melt into an ultra-large specification with a thickness of 600mm-660mm and a width of 600mm-660mm. 2000mm~2200mm aluminum alloy flat ingot; wherein, the refining is refining at a temperature of 720°C~740°C and under argon protection for 10~20min, and the sta...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that in step 1, the mass fraction of Mn is 0.650% to 0.85%, Mg is 4.50% to 4.60%, Cr is 0.07% to 0.09%, and Be is 0.650% to 0.85%. The ratio of 0.0005% to 0.0007% and the balance is Al to weigh the raw materials for smelting. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0023] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the melting method in step 1 is: adding the weighed smelting raw materials into an oil-fired furnace or a gas-fired furnace, and melting at 720°C to 750°C. Smelting raw materials. Other steps and parameters are the same as in the first or second embodiment.

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Abstract

The invention relates to a manufacturing method for a super-large-sized aluminium alloy flat ingot casting, and aims to solve the problem that the conventional small-sized ingot casting cannot meet the use requirement. The method comprises the following steps: I, smelting; and II, forming: adopting the semi-continuous casting process to manufacture a casting molten mass into the super-large-sized aluminium alloy flat ingot casting with the thickness of 600mm-660mm and the thickness of 2000mm-2200mm. The manufacturing method disclosed by the invention is applied to the manufacture field of the super-large-sized aluminium alloy flat ingot casting.

Description

technical field [0001] The invention relates to a manufacturing method of an aluminum alloy flat ingot. Background technique [0002] 5083 aluminum alloy has the characteristics of medium strength, good corrosion resistance, weldability and easy processing and forming, and is a typical alloy in Al-Mg alloys. 5083 aluminum alloy sheets in different heat treatment states are the main materials used in pressure vessels, armored vehicles, ships, and automobile manufacturing. With the advancement of technology and the continuous improvement of product performance requirements, the size requirements for 5083 alloy sheets are getting larger and larger, and the traditional small-sized ingots can no longer meet the requirements. Therefore, research on the manufacturing method of super-sized 5083 alloy flat ingots meets the urgent need of the market for 5083 alloy large-sized plates. SUMMARY OF THE INVENTION [0003] The invention aims to solve the problem that the traditional sma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/06C22C1/02B22D11/00
Inventor 黄同瑊吴欣凤王国军李海仙姜德俊马月刘超曹永亮
Owner NORTHEAST LIGHT ALLOY CO LTD
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