Manganese additive for casting aluminum magnesium alloy and preparation method of manganese additive

A technology of manganese additives and aluminum-magnesium alloys, which is applied in the field of additives for melting and casting of aluminum-magnesium alloys and its preparation, can solve problems such as slow melting speed, long melting time, and large energy consumption, and achieve fast melting speed, reduce microcracks, The effect of reducing dendrite segregation

Inactive Publication Date: 2015-03-25
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 problems of slow or non-melting conventional manganese additives in the existing high-magnesium environment, low yield, high melting temperature, long melting time and large energy consumption, and provides a method for melting and casting aluminum-magnesium alloys. Manganese additive and preparation method thereof

Method used

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  • Manganese additive for casting aluminum magnesium alloy and preparation method of manganese additive
  • Manganese additive for casting aluminum magnesium alloy and preparation method of manganese additive
  • Manganese additive for casting aluminum magnesium alloy and preparation method of manganese additive

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specific Embodiment approach 1

[0017] Embodiment 1: A manganese additive for aluminum-magnesium alloy casting according to this embodiment is composed of 70-80 parts by mass of manganese powder and 20-30 parts of flux.

[0018] The flux described in this embodiment is a conventional manganese additive flux.

[0019] The magnesium-aluminum-aluminum-manganese additive in this embodiment can not only replace the aluminum-manganese intermediate alloy for melting 5-series magnesium-aluminum alloys, but also has a relatively simple manufacturing method, can be used at a lower melting temperature, reduces melting time, and improves yield. High efficiency, energy saving, convenient transportation and storage, etc.

[0020] Compared with existing products, the magnesium-aluminum-aluminum-manganese additive in this embodiment has the following advantages:

[0021] (1) The melting temperature is low, and it can be completely melted at 740°C, which can reduce burning loss, reduce bubble rate, reduce dendrite segregati...

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass percentage of manganese in the manganese powder is not less than 99%. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the mass fraction of manganese in the manganese powder is 99.2%. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a manganese additive for casting aluminum magnesium alloy and a preparation method of the manganese additive, relates to an additive for casting aluminum magnesium alloy and a preparation method of the additive, and aims at solving the problems that a conventional manganese additive is low in melting rate or infusible, low in casting yield, high in smelting temperature, long in smelting time and high in energy consumption under the existing environment with high content of magnesium. The manganese additive disclosed by the invention is prepared from manganese powder and a fluxing agent. The method disclosed by the invention comprises the following steps: mixing the manganese powder with the fluxing agent, and pressing into a cake at the pressure intensity of 7-8MPa, so as to obtain the manganese additive. The manganese additive is low in melting temperature, high in melting rate and high in casting yield, and can be completely molten at 740 DEG C; the melting rate is over 50% greater than that of the conventional manganese additive; the additive which is fed to molten aluminum magnesium alloy over 740 DEG C can be rapidly molten and can be absorbed by molten aluminum within 8-10 minutes; and the casting yield of a manganese element within 20 minutes can be up to over 90%.

Description

technical field [0001] The invention relates to an additive for aluminum-magnesium alloy melting and casting and a preparation method thereof. Background technique [0002] The 5-series aluminum alloy is an aluminum alloy with magnesium as the main alloying element, and a small amount of manganese, chromium, titanium and other elements are added, and it can also be called aluminum-magnesium alloy. This series of alloys has low density, high tensile strength and high elongation, so it is commonly used in aviation and ships, and is also widely used in conventional industries. Due to the high content of magnesium in this series of alloys, the fluidity of the alloy during casting is poor. It is difficult for other metal elements to melt into the molten aluminum, which makes it difficult to control the composition of the alloy. Therefore, it is generally the last addition of magnesium to melt this alloy. [0003] However, in order to reduce smelting costs, many domestic aluminum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C21/06
Inventor 张忠凯王春阳张忠华张春宇李波张建国王法娟王春鹤王晓东李洲
Owner 哈尔滨东盛金材科技(集团)股份有限公司
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