Silicon additive for melting and casting aluminum alloy and preparation method of silicon additive

A silicon additive and aluminum alloy technology, which is applied in the field of aluminum alloy casting additives and its preparation, can solve the problems of inaccurate composition adjustment, easy oxidation of silicon elements, and large energy consumption, and achieve convenient transportation and storage, fast melting speed, The effect of increasing the yield rate

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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Problems solved by technology

[0003] The present invention aims to solve the problems of low yield rate, inaccurate composition adjustment, and large energy consumption caused by the easy oxidati

Method used

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  • Silicon additive for melting and casting aluminum alloy and preparation method of silicon additive
  • Silicon additive for melting and casting aluminum alloy and preparation method of silicon additive
  • Silicon additive for melting and casting aluminum alloy and preparation method of silicon additive

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specific Embodiment approach 1

[0016] Embodiment 1: In this embodiment, a silicon additive for aluminum alloy casting consists of 70-80 parts of silicon powder, 15-18 parts of pure aluminum tube and 2-5 parts of pure aluminum foil in parts by mass.

[0017] A silicon additive for aluminum alloy melting and casting according to this embodiment solves the problems of low yield rate, inaccurate composition adjustment, and large energy consumption caused by the oxidation of silicon element during aluminum alloy smelting. The aluminum alloy silicon additive not only It can replace the aluminum-based master alloy as a new type of raw material for preparing aluminum alloys, and has the advantages of relatively simple preparation methods, can be used at lower melting temperatures, reduces melting time, improves yield, saves energy, and is convenient for transportation and storage. .

[0018] Compared with existing products, the silicon additive for aluminum alloy melting and casting involved in this embodiment has ...

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that a silicon additive for aluminum alloy casting consists of 75-80 parts of silicon powder, 16-17 parts of pure aluminum tube and 3-4 parts by mass. Made of pure aluminum foil. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that a silicon additive for aluminum alloy casting consists of 80 parts by mass of silicon powder, 16.5 parts of pure aluminum tube and 3.5 parts of pure aluminum foil . Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a silicon additive for melting and casting an aluminum alloy and a preparation method of the silicon additive, and aims at solving the problems that the practical yield is low, components cannot be adjusted precisely and a great deal of energy is consumed as the ordinary silicon element is easy to oxidize when the aluminum alloy is molten and smelted. The silicon additive consists of silicon powder, a pure aluminum tube and a pure aluminum foil. The preparation method comprises the following steps: sealing one end of the pure aluminum tube by using the pure aluminum foil, filling the pure aluminum tube with the silicon powder from the other end of the pure aluminum tube, and further sealing by using the pure aluminum foil, thereby obtaining the silicon additive. The silicon additive disclosed by the invention is low in melting temperature, that is, the silicon additive can be completely molten at 730 DEG C; the melting speed is high, that is, the melting speed is 25-30% higher than that of a metal silicon block which is used at present; the practical yield of the silicon additive is high, that is, the practical yield of the prepared silicon additive is greater than 90%; an aluminum alloy which is uniform and precise in components is easy to prepare, and the silicon additive is environment-friendly and pollution-free when being used as no element such as potassium, sodium or fluorine is added.

Description

technical field [0001] The invention relates to an additive for aluminum alloy melting and casting and a preparation method thereof. Background technique [0002] In the process of aluminum alloy smelting, there are many traditional silicon addition methods, and most of them currently use two methods: master alloy and metal additive. The addition method of master alloy has the advantages of high accuracy, precise composition control, and the liquid is not overheated, but there are problems such as secondary smelting and high cost. Another traditional addition method is to use instant silicon particles to add silicon element. Although this method is simple and effective, it also has the fatal disadvantage of easily oxidizing the surface of silicon powder to form slag inclusions. At present, the silicon additives used in domestic aluminum alloy production only meet the actual needs to a certain extent, and cannot completely meet the requirements for the production of high-qua...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/00
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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