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Copper additive for high magnesium aluminum alloy casting and preparation method thereof

A high-magnesium aluminum alloy and additive technology, which is applied in the field of high-magnesium aluminum alloy melting and casting additives and its preparation, can solve the problems of low yield, long time, slow melting speed, etc., achieve convenient transportation and storage, and simple manufacturing method , the effect of short melting time

Inactive Publication Date: 2015-09-30
哈尔滨东盛金材科技(集团)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of slow or non-melting conventional copper additives, low yield, high smelting temperature, long time and large energy consumption during smelting of high-magnesium aluminum alloys, thereby providing a method for high-magnesium aluminum alloys. Copper additive for melting and casting and method for preparing same

Method used

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  • Copper additive for high magnesium aluminum alloy casting and preparation method thereof
  • Copper additive for high magnesium aluminum alloy casting and preparation method thereof
  • Copper additive for high magnesium aluminum alloy casting and preparation method thereof

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specific Embodiment approach 1

[0016] Embodiment 1: A copper additive for high-magnesium aluminum alloy melting and casting according to this embodiment is made of 70-80 parts by mass of electrolytic copper powder and 20-30 parts of flux.

[0017] Compared with existing products, the high-magnesium aluminum alloy casting copper additive in this embodiment has the following advantages:

[0018] (1) The melting temperature is low, and it can be completely melted at 720°C, which can reduce the burning loss of the alloy liquid, reduce the porosity of the ingot, dendrite segregation and microcracks, etc.;

[0019] (2) The melting speed is fast, more than 30% faster than the conventional manganese additives currently used;

[0020] (3) The actual yield rate of the product is high. When the additive is put into the magnesium-aluminum alloy liquid above 720°C, the additive can be rapidly melted and absorbed by the aluminum liquid within 3 to 5 minutes, and the actual yield rate of copper element can reach more than...

specific Embodiment approach 2

[0022] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the mass percentage of copper element in the electrolytic copper powder is not less than 99%. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0023] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: the mass fraction of copper element in the electrolytic copper powder is 99.5%. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a copper additive for high magnesium aluminum alloy casting and a preparation method thereof, and relates to an additive for high magnesium aluminum alloy casting and a preparation method thereof. The copper additive aims to solve the technical problems that in a high magnesium aluminum alloy casting process, an existing copper additive is low in melting speed or not molten and low in casting yield, the melting temperature is high, time is long, and energy consumption is large. The copper additive is prepared by electrolytic copper powder and a fluxing agent. The method includes the steps that 1, the electrolytic copper powder and the fluxing agent are weighed; 2, the electrolytic copper powder and the fluxing agent which are weighed in the step 1 are evenly mixed and then are pressed to be in a circular cake shape under the condition that the hydraulic pressure ranges from 6 MPa to 7.5 MPa, and the copper additive for high magnesium aluminum alloy casting is obtained. The preparation method of the copper additive for high magnesium aluminum alloy casting is simple, and the copper additive has the advantages that the copper additive can be used at a lower smelting temperature, the melting time is short, the casting yield is high, energy is saved, and transport and storage are convenient to conduct. The method is applied to the field of preparing the copper additive for high magnesium aluminum alloy casting.

Description

technical field [0001] The invention relates to a high-magnesium aluminum alloy casting additive and a preparation method thereof. Background technique [0002] Pure aluminum has excellent ductility and is a good conductor of heat and electricity. However, the mechanical properties of pure aluminum are not high, so it is not suitable for direct production of structural parts that bear large loads. During smelting, adding an appropriate amount of alloying elements to molten aluminum can improve the mechanical properties of aluminum. Among them, magnesium element has obvious strengthening effect on aluminum, and the strength of the alloy increases with the increase of magnesium content to a certain extent; magnesium element can also significantly improve the welding performance of the alloy. However, when smelting aluminum alloys containing a certain amount of magnesium, the addition of magnesium leads to poor fluidity of the alloy, and it is difficult for other metal elemen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C21/00
Inventor 张忠凯王春阳张春宇张忠华张建国张忠坤王麒宇张晓曼玉张偲玉李昀昊王佳璇孙佳琪张荆硕李洲陈睿唐芳
Owner 哈尔滨东盛金材科技(集团)股份有限公司
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