CN102268576A - Smelting process for improving mechanical properties of aluminum wheel - Google Patents
Smelting process for improving mechanical properties of aluminum wheel Download PDFInfo
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- CN102268576A CN102268576A CN2011102227340A CN201110222734A CN102268576A CN 102268576 A CN102268576 A CN 102268576A CN 2011102227340 A CN2011102227340 A CN 2011102227340A CN 201110222734 A CN201110222734 A CN 201110222734A CN 102268576 A CN102268576 A CN 102268576A
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Abstract
The invention discloses a smelting process for improving mechanical properties of an aluminum wheel. A novel aluminum-titanium-carbon refining agent suitable for a low-pressure casting aluminum alloy wheel production process is adopted and comprises the following components in percentage by weight: 6-8 percent of titanium, 0.45-0.65 percent of carbon and the balance of aluminum. The smelting process adopting the grain refining agent comprises the following steps of: 1, adding the grain refining agent according to 4-5 thousandths of aluminum liquid weight into a casting ladle; and 2, starting an aluminum liquid refining system when the addition amount of the aluminum liquid of the casting ladle reaches over one third, simultaneously adding an aluminum-strontium intermediate alloy and a slag-cleaning agent, degassing for 5-8 minutes, skimming slag by using a dedicated tool after the degassing is finished, and standing the casting ladle for 10 minutes and then controlling the aluminum liquid temperature to be 700-710 DEG C and pouring the aluminum liquid into a heat-insulating furnace of a low-pressure casting machine. The smelting process provided by the invention has the advantages that the yield of the low-pressure casting aluminum alloy wheel is increased, the production cost is reduced, the mechanical properties of the wheel are improved, the safety of the wheel in the using process is enhanced and the low-pressure casting aluminum alloy production process can be stabilized.
Description
Technical field
The present invention relates to a kind of melting technology, particularly a kind of aluminum-alloy wheel melting technology.
Background technology
Developing rapidly and the part lightweight of automotive industry, more and more higher to the performance requriements of aluminum-alloy wheel, especially the unit elongation of aluminum-alloy wheel is had higher requirement, and grain refining is the effective ways that improve the metallic substance unit elongation.At present, Al-Ti-B intermediate alloy is a grain-refining agent the most frequently used in the aluminium alloy, has good grain refining effect.But still there are some problems in it: (1) this grain-refining agent metallurgical quality is poor, can influence the mechanical property of aluminium alloy to a certain extent.(2) TiB in the aluminium titanium boron
2Size of particles is bigger, and thinning effect is slightly more weaker than TiC, and the gathering sinking in aluminium liquid easily of these particles, causes the aluminium alloy crystal particle dimension difference bigger, makes the Mechanical Properties of Aluminum Alloys variation.(3) really play in this material heterogeneous nucleation effect less than 1%, forming core potential is not brought into play fully.Therefore, the aluminium industry member wishes to have a kind of substitute of acceptable Al-Ti-B intermediate alloy grain-refining agent always.
Melting technology also has very big influence to the aluminum vehicle wheel performance, and present known smelting technique can not satisfy the demand of high-end customer.
Summary of the invention
The object of the present invention is to provide a kind of low pressure casting aluminum alloy wheel melting technology.
The present invention proposes a kind of new A l-Ti-C grain-refining agent, its composition weight percent is: Ti 6-8%, and C 0.45-0.65%, all the other are Al.
The melting technology that adopts the present invention to produce aluminum-alloy wheel is: 1. the 4-5 ‰ that grain-refining agent of the present invention is pressed aluminium liquid weight adds in the casting ladle.2. reach 1/3 and start aluminium liquid rectification systems when above when watering the alclad liquid measure, add Al-Sr master alloy, slag-cleaning agent simultaneously, Al-Sr master alloy add-on is 0.020-0.040wt%, and the add-on of slag-cleaning agent is 1-2.5kg.The degasification time is 5-8min.Degasification finishes the back skims with special tool, and after casting ladle left standstill 10min, temperature of aluminum liquid was controlled between 700 ℃-710 ℃, pours in the air injection machine holding furnace, requires to be provided with low-pressure casting process according to difference wheel type and produces aluminum-alloy wheel.
Compare with other Al-Ti-C grain-refining agent, new A l-Ti-C grain-refining agent advantage provided by the invention is: improve the yield rate of low pressure casting aluminum alloy wheel, reduce production costs; Improve the mechanical property of wheel, promote the security in the wheel use; Can stabilizing low voltage cast aluminium alloy production technique.
Description of drawings
Fig. 1 is for using common Al-Ti-C grain-refining agent, the microstructure at spoke position.
Fig. 2 is the microstructure at the spoke position of embodiment 1 acquisition.
Fig. 3 is the microstructure at the spoke position of embodiment 2 acquisitions.
Fig. 4 is the microstructure at the spoke position of embodiment 3 acquisitions.
Embodiment
Embodiment 1:1. with Ti6%, C 0.45%, all the other are that the grain-refining agent of Al is pressed 4 ‰ of aluminium liquid weight and added in the casting ladles.
2. reach 1/3 and start aluminium liquid rectification systems when above when watering the alclad liquid measure, add Al-Sr master alloy and slag-cleaning agent simultaneously, Al-Sr master alloy add-on is 0.020wt%, and the add-on of slag-cleaning agent is 1kg.The degasification time is 5min.Degasification finishes the back skims with special tool, and after casting ladle left standstill 10min, temperature of aluminum liquid was controlled at 700 ℃, pours in the air injection machine holding furnace, requires to be provided with low-pressure casting process according to difference wheel type and produces aluminum-alloy wheel.
Embodiment 2:1. with Ti7%, C 0.5%, all the other are that the grain-refining agent of Al is pressed 4.5 ‰ of aluminium liquid weight and added in the casting ladles.
2. reach 1/3 and start aluminium liquid rectification systems when above when watering the alclad liquid measure, add Al-Sr master alloy and slag-cleaning agent simultaneously, Al-Sr master alloy add-on is 0.030wt%, and the add-on of slag-cleaning agent is 2kg.The degasification time is 6min.Degasification finishes the back skims with special tool, and after casting ladle left standstill 10min, temperature of aluminum liquid was controlled at 704 ℃, pours in the air injection machine holding furnace, requires to be provided with low-pressure casting process according to difference wheel type and produces aluminum-alloy wheel.
Embodiment 3:1. with Ti8%, C 0.6%, all the other are that the grain-refining agent of Al is pressed 5 ‰ of aluminium liquid weight and added in the casting ladles.
2. reach 1/3 and start aluminium liquid rectification systems when above when watering the alclad liquid measure, add Al-Sr master alloy and slag-cleaning agent simultaneously, Al-Sr master alloy add-on is 0.040wt%, and the add-on of slag-cleaning agent is 2.5kg.The degasification time is 7min.Degasification finishes the back skims with special tool, and after casting ladle left standstill 10min, temperature of aluminum liquid was controlled at 708 ℃, pours in the air injection machine holding furnace, requires to be provided with low-pressure casting process according to difference wheel type and produces aluminum-alloy wheel.
Claims (4)
1. melting technology that improves the aluminum vehicle wheel mechanical property is characterized in that: adopt a kind of new A l-Ti-C grain-refining agent, and its composition weight percentage: Ti:6-8%, C:0.45-0.65%, all the other are Al.
2. melting technology that improves the aluminum vehicle wheel mechanical property, it is characterized in that: the 4-5 ‰ that grain-refining agent is pressed aluminium liquid weight adds in the casting ladle, reach 1/3 and start aluminium liquid rectification systems when above when watering the alclad liquid measure, add the Al-Sr master alloy simultaneously, slag-cleaning agent, the degasification time is 5-8min, degasification finishes the back and skims with special tool, and after casting ladle left standstill 10min, temperature of aluminum liquid was controlled between 700 ℃-710 ℃, pours in the air injection machine holding furnace.
3. according to the described a kind of melting technology that improves the aluminum vehicle wheel mechanical property of claim 2, it is characterized in that: Al-Sr master alloy add-on is 0.020-0.040wt%.
4. according to the described a kind of melting technology that improves the aluminum vehicle wheel mechanical property of claim 2, it is characterized in that: the add-on of slag-cleaning agent is 1-2.5kg.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102227340A CN102268576A (en) | 2011-08-05 | 2011-08-05 | Smelting process for improving mechanical properties of aluminum wheel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102227340A CN102268576A (en) | 2011-08-05 | 2011-08-05 | Smelting process for improving mechanical properties of aluminum wheel |
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| CN102268576A true CN102268576A (en) | 2011-12-07 |
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| CN2011102227340A Pending CN102268576A (en) | 2011-08-05 | 2011-08-05 | Smelting process for improving mechanical properties of aluminum wheel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074508A (en) * | 2013-02-01 | 2013-05-01 | 天津立中合金集团有限公司 | Molten aluminum alloy smelting method for adding aluminum-strontium intermediate alloy in aluminum carrier |
| CN108290210A (en) * | 2015-11-02 | 2018-07-17 | 慕贝尔性能车轮有限公司 | Method for manufacturing light metal casting component and light metal casting component |
| CN110541094A (en) * | 2019-09-30 | 2019-12-06 | 中信戴卡股份有限公司 | Die-casting aluminum alloy and automobile part |
| CN117127041A (en) * | 2023-07-24 | 2023-11-28 | 中信戴卡股份有限公司 | Environment-friendly regenerated casting aluminum alloy melt processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418973A (en) * | 2002-12-18 | 2003-05-21 | 涿州市精英铝合金材料有限责任公司 | Refining agent for crystalline grain of aluminium titanium carbon intermediate alloy |
| CN1603435A (en) * | 2004-09-13 | 2005-04-06 | 中国铝业股份有限公司 | Method for preparing aluminum-titanium-carbon intermediate alloy |
| CN1912160A (en) * | 2006-09-05 | 2007-02-14 | 中国铝业股份有限公司 | Preparation method of Al-TiC master alloy |
| CN102108462A (en) * | 2011-03-18 | 2011-06-29 | 常州鸿泽澜线缆有限公司 | Aluminium alloy material and preparation method and application thereof |
-
2011
- 2011-08-05 CN CN2011102227340A patent/CN102268576A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1418973A (en) * | 2002-12-18 | 2003-05-21 | 涿州市精英铝合金材料有限责任公司 | Refining agent for crystalline grain of aluminium titanium carbon intermediate alloy |
| CN1603435A (en) * | 2004-09-13 | 2005-04-06 | 中国铝业股份有限公司 | Method for preparing aluminum-titanium-carbon intermediate alloy |
| CN1912160A (en) * | 2006-09-05 | 2007-02-14 | 中国铝业股份有限公司 | Preparation method of Al-TiC master alloy |
| CN102108462A (en) * | 2011-03-18 | 2011-06-29 | 常州鸿泽澜线缆有限公司 | Aluminium alloy material and preparation method and application thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103074508A (en) * | 2013-02-01 | 2013-05-01 | 天津立中合金集团有限公司 | Molten aluminum alloy smelting method for adding aluminum-strontium intermediate alloy in aluminum carrier |
| CN108290210A (en) * | 2015-11-02 | 2018-07-17 | 慕贝尔性能车轮有限公司 | Method for manufacturing light metal casting component and light metal casting component |
| CN110541094A (en) * | 2019-09-30 | 2019-12-06 | 中信戴卡股份有限公司 | Die-casting aluminum alloy and automobile part |
| CN117127041A (en) * | 2023-07-24 | 2023-11-28 | 中信戴卡股份有限公司 | Environment-friendly regenerated casting aluminum alloy melt processing method |
| CN117127041B (en) * | 2023-07-24 | 2024-05-10 | 中信戴卡股份有限公司 | Environment-friendly regenerated casting aluminum alloy melt processing method |
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Application publication date: 20111207 |