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Method for producing silicon-containing aluminum alloy ingot

一种制造方法、铝合金的技术，应用在铝合金铸块的制造领域，能够解决不能除去磷、过滤器堵塞等问题，达到除去操作容易、防止堵塞、提高生产率的效果

Inactive Publication Date: 2016-08-24
RESONAC HOLDINGS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, in the technique of Patent Document 1, fine aluminum phosphide particles are also mixed, so there is a problem that the fine particles pass through the filter and phosphorus cannot be removed; the fine particles clog the filter.

Method used

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  • Method for producing silicon-containing aluminum alloy ingot
  • Method for producing silicon-containing aluminum alloy ingot
  • Method for producing silicon-containing aluminum alloy ingot

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] Specific examples of the present invention will be described below, but the present invention is not particularly limited to these examples.

[0063]

[0064] A silicon ingot (with a phosphorus content of 230 ppm) obtained by reducing silica was heated and melted, and the resulting melt was poured into a mold 10 and allowed to cool naturally to obtain a rectangular parallelepiped silicon ingot 11 . Through this natural cooling, the solidification of the molten silicon proceeds from the vicinity of the outer peripheral frame portion of the mold and completes the solidification at the upper exposed surface. like figure 1 As shown, the upper surface of the ingot 11 (finally solidified part) was sprayed with water 13 at 20° C. for 30 minutes in a state where the silicon ingot 11 was left in the mold 10 .

[0065] Next, a rectangular parallelepiped silicon ingot 11 is taken out from the mold 10, and after drying to remove attached water, the silicon ingot is disintegrated...

Embodiment 2

[0068] A silicon ingot (with the same phosphorus content as that of the silicon ingot used in Example 1) obtained by reduction treatment of silica was heated and melted, and the resulting melt was poured into the mold 10, allowed to cool naturally, A rectangular parallelepiped silicon ingot 11 was obtained. Through this natural cooling, the solidification of the molten silicon proceeds from the vicinity of the outer peripheral frame portion of the mold and completes the solidification at the upper exposed surface.

[0069] Then, as image 3 As shown, a rectangular parallelepiped silicon ingot 11 is taken out from a casting mold 10 , and the silicon ingot is disintegrated to obtain a plurality of disintegrated products 12 . Then, a water washing process of immersing the plurality of crushed products 12 in water 13 at 90° C. for 10 minutes was performed. Next, after removing the adhered water from the disintegrated products 12 taken out by drying, these disintegrated products ...

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PUM

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Abstract

Provided is a method for producing a silicon-containing aluminum alloy ingot capable of preventing clogging of a filter, which requires stopping casting, suppressing aluminum loss, and reducing the amount of carbon dioxide in the obtained silicon-containing aluminum alloy ingot. The content of impurity phosphorus. The production method of the present invention is characterized by comprising: a water washing step of subjecting a silicon ingot containing phosphorus as an impurity to a water washing treatment; and feeding an alloy raw material including at least the silicon ingot obtained through the water washing step and an aluminum raw material into a melting furnace Among them, a molten metal forming step in which a molten metal is obtained by melting it; and a casting process in which a silicon-containing aluminum alloy ingot is obtained by casting the obtained molten metal.

Description

technical field [0001] The present invention relates to a method for producing a silicon-containing aluminum alloy ingot having a low content of impurity phosphorus. Background technique [0002] Ingots of silicon used as raw materials for continuous casting of silicon-containing aluminum alloys, etc., contain phosphorus. The impurity phosphorus in such a silicon block is considered to be brought in from raw material silica and carbon used for reduction in the process of manufacturing the silicon block. [0003] When such a phosphorus-containing silicon block is used as a part of the raw material, an aluminum alloy melt is prepared, an ingot is cast, and the ingot is processed by rolling or the like, hole defects, etc. are generated due to phosphorus contained in the ingot. , Therefore, the desired strength cannot be obtained, for example, in the case of chemical treatment, uniform etching cannot be performed, resulting in a decrease in the quality of the product. [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/20B22D7/00B22D21/04C22C1/02C22C21/02
CPCC22C21/02B22D7/005B22D21/04C22C1/02C22C1/026B22D1/00
Inventor 福田政志
Owner RESONAC HOLDINGS CORPORATION
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