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Preparation method of aluminum alloy wheel hub

A technology of aluminum alloy wheel hub and aluminum ingot, applied in the field of metal materials, can solve the problems of increasing production cost, low qualification rate of aluminum alloy wheel hub, affecting the quality of aluminum alloy wheel hub, etc., so as to prolong the service life, improve fluidity and solidification shrinkage. properties, the effect of reducing the hydrogen content and the content of inclusions

Active Publication Date: 2019-01-11
LIUZHOU HAOXIANGTE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the hydrogen content and the content of inclusions in the existing aluminum liquid are generally high, which directly affects the quality of the aluminum alloy wheel, resulting in a low pass rate of the aluminum alloy wheel, which in turn increases the production cost.

Method used

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  • Preparation method of aluminum alloy wheel hub

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preparation example Construction

[0018] The invention provides a method for preparing an aluminum alloy wheel hub, comprising:

[0019] Step 1. The aluminum ingot is smelted once to form an aluminum liquid. The temperature of the first smelting is 800-850° C., and the time of the first smelting is 20-30 minutes. The aluminum ingot includes the following components in parts by mass: Si 8-9 0.2-0.4 parts of Mg, 0.02-0.04 parts of Ti, 0.03-0.05 parts of Fe, 0.01-0.02 parts of Cu, 0.01-0.02 parts of Zn, and the rest are Al;

[0020] Step 2, adding a slag remover to the primary aluminum liquid, the slag remover includes sodium chloride, potassium chloride and sodium carbonate, wherein the mass ratio of sodium chloride, potassium chloride and sodium carbonate is 1:0.2- 0.4:0.2-0.4, the mass ratio of the slag-removing agent to the aluminum ingot is 0.3-0.5:1000 parts, followed by secondary smelting, the secondary smelting temperature is 600-650°C, and the secondary smelting time is 3- 5h, then let stand to discharg...

Embodiment 1

[0030] Step 1. Melt 1000 kg of aluminum ingot once to form molten aluminum. The temperature of the first smelting is 800° C. and the time of the first smelting is 20 minutes. The aluminum ingot includes the following components in parts by mass: Si 8-9 parts, Mg 0.2-0.4 parts, Ti 0.02-0.04 parts, Fe 0.03-0.05 parts, Cu 0.01-0.02 parts, Zn 0.01-0.02 parts, the rest is Al;

[0031] Step 2, adding a slag remover to the primary aluminum liquid, the slag remover includes sodium chloride, potassium chloride and sodium carbonate, wherein the mass ratio of sodium chloride, potassium chloride and sodium carbonate is 1:0.2: 0.2, the mass ratio of the slag-removing agent to the aluminum ingot is 0.3:1000 parts, followed by secondary smelting, the secondary smelting temperature is 600°C, the secondary smelting time is 3h, and then the slag is discharged by standing still;

[0032] Step 3, adding a refining agent to the secondary aluminum liquid after deslagging for refining, the refining ...

Embodiment 2

[0035] Step 1. Melt 1000 kg of aluminum ingot once to form molten aluminum. The temperature of the first smelting is 850° C. and the time of the first smelting is 30 minutes. The aluminum ingot includes the following components in parts by mass: Si 8-9 parts, Mg 0.2-0.4 parts, Ti 0.02-0.04 parts, Fe 0.03-0.05 parts, Cu 0.01-0.02 parts, Zn 0.01-0.02 parts, the rest is Al;

[0036] Step 2, adding slag-removing agent to primary aluminum liquid, described slag-removing agent comprises sodium chloride, potassium chloride and sodium carbonate, wherein, the mass ratio of sodium chloride, potassium chloride and sodium carbonate is 1:0.4: 0.4, the mass ratio of the slag-removing agent to the aluminum ingot is 0.5:1000 parts, followed by secondary smelting, the secondary smelting temperature is 650°C, the secondary smelting time is 5h, and then the slagging is left standing;

[0037] Step 3: adding a refining agent to the slagging secondary aluminum liquid for refining, the refining age...

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Abstract

The invention discloses a preparation method of an aluminum alloy hub. The preparation method comprises the following steps: (1) an aluminum ingot is primarily smelted to form primary molten aluminum; the primary smelting temperature is 800-850 DEG C; and the primary smelting time is 20-30 min; (2) a slag removing agent is added into the primary molten aluminum; the mass ratio of the slag removing agent to the aluminum ingot is 0.3-0.5: 1000 parts; then, the secondary smelting is performed; the secondary smelting temperature is 600-650 DEG C; the secondary smelting time is 3-5 h; and then, standing and slag removal are performed; (3) a refining agent is added in the slag-removed secondary molten aluminum for refining; the refining temperature is 700-730 DEG C; and the refining time is 20-40 min; and (4) the molten aluminum prepared in the step (3) is used for casting to prepare the aluminum alloy hub. The preparation method reduces the contents of hydrogen and inclusions in the molten aluminum to improve the fluidity and the solidification shrinkage of an aluminum alloy so as to prevent formation of pin holes and slag holes in the prepared aluminum alloy hub.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a method for preparing an aluminum alloy wheel hub. Background technique [0002] Existing processing methods for aluminum alloy wheels include: melting and refining of aluminum ingots, casting and machining. The quality of molten aluminum after melting and refining directly determines the quality of aluminum alloy wheels. The quality of molten aluminum is mainly determined by the hydrogen content in the molten aluminum and the content of inclusions in the molten aluminum. The hydrogen content in the aluminum liquid and the content of inclusions in the aluminum liquid determine the pinholes on the surface of the aluminum alloy hub, the fluidity of the aluminum liquid, and the shrinkage during solidification. [0003] However, the hydrogen content and the content of inclusions in the existing aluminum liquid are generally high, which directly affects the quality of the aluminum all...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/06C22C1/02
CPCC22C1/026C22C1/06C22C21/02
Inventor 易鉴荣唐臻林荔珊
Owner LIUZHOU HAOXIANGTE SCI & TECH
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