Smelting method for Al-Mg-Mn-Cu-Ti aluminum alloy

An al-mg-mn-cu-ti, aluminum alloy technology, applied in the smelting field of Al-Mg-Mn-Cu-Ti aluminum alloy, can solve the problem of poor mechanical properties of products and can not well control the introduction of impurity elements problems such as low yield and low yield, to achieve the effects of low product impurity content, high yield and less casting defects

Inactive Publication Date: 2013-04-24
威瑞泰科技发展(宁波)有限公司
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Problems solved by technology

However, the existing Al-Mg-Mn-Cu-Ti aluminum alloy smelting process often cannot well control the amount of impurity elements brought into the smelting process, the yield of the smelting process is not high, and the mechanical properties of the produced products are poor.

Method used

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Embodiment Construction

[0014] Below in conjunction with embodiment the present invention is described in further detail.

[0015] The chemical composition and proportioning of the selected embodiment Al-Mg-Mn-Cu-Ti aluminum alloy are: Mg 4.3wt%, Mn 0.5wt%, Cu 0.3wt%, Ti 0.14wt%, the rest is aluminum and unavoidable Impurities, the smelting method thereof comprises the following steps:

[0016] 1) Preparation before the start of smelting: remove slag and rust on cast iron crucibles and smelting tools;

[0017] 2) Batching: According to the required chemical composition and ratio, the ingredients of various raw materials are added. The forms of adding various raw materials are pure Al ingot, pure Mg ingot, Al-Cu master alloy, Al-Ti master alloy, shot peened The processed Al-Mg-Mn-Cu-Ti aluminum alloy is returned to the furnace and pure Mn ingot, and then the various raw materials are preheated to 300 ° C for 1 hour;

[0018] 3) Melting: Preheat the cast iron crucible furnace to 600°C, then add a cov...

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PUM

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Abstract

The invention discloses a smelting method for an Al-Mg-Mn-Cu-Ti aluminum alloy. The smelting method comprises the following steps of (1) preparing before smelting; (2) batching; (3) smelting, namely preheating a cast iron crucible furnace, and adding a covering agent; adding partial raw materials into a cast iron crucible after the covering agent is completely dissolved, and increasing the temperature and adding pure Mn ingots after the raw materials are completely smelted; continuously stirring and gradually increasing the temperature after the pure Mn ingots are smelted, slagging off, transferring melt to a graphite crucible heat preserving furnace, sampling and performing stokehole chemical component analysis; (4) preserving the heat and refining; namely adjusting the components of the melt, controlling the temperature of the furnace, pressing a refining agent into an aluminum alloy melt, degassing and refining; and (5) casting, namely covering a coating agent without magnesium on the surface of the aluminum alloy melt, slagging off after standing, and finally casting. The Al-Mg-Mn-Cu-Ti aluminum alloy produced by the smelting method has the advantages of less casting defects, high yield, low content of impurities of produced products, and good mechanical performance.

Description

technical field [0001] The invention belongs to the field of aluminum alloy material manufacturing, and in particular relates to a method for melting an Al-Mg-Mn-Cu-Ti aluminum alloy. Background technique [0002] Aluminum alloy materials are widely used in industries such as aviation, aerospace, ships, building materials, home appliances, telecommunications, and power cables because of their low density, high specific strength, good electrical conductivity, and large reserves, and play an important role. . Al-Mg-Mn-Cu-Ti aluminum alloy is a kind of corrosion-resistant aluminum alloy widely used in the shipbuilding industry, and its corrosion resistance is good. Since the Al-Mg-Mn-Cu-Ti aluminum alloy belongs to the Al-Mg series aluminum alloy, its casting performance is easily affected by impurity elements; The tendency is large, and elements such as Al and Mg are easily oxidized to form inclusions, so the casting performance of Al-Mg aluminum alloys is poor; affect the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C1/06C22C21/06
Inventor 熊瑞斌张超明
Owner 威瑞泰科技发展(宁波)有限公司
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