CN101760634A - Four-stage composite purification technology of cast aluminum alloy wheel hub - Google Patents
Four-stage composite purification technology of cast aluminum alloy wheel hub Download PDFInfo
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- CN101760634A CN101760634A CN200810172150A CN200810172150A CN101760634A CN 101760634 A CN101760634 A CN 101760634A CN 200810172150 A CN200810172150 A CN 200810172150A CN 200810172150 A CN200810172150 A CN 200810172150A CN 101760634 A CN101760634 A CN 101760634A
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- aluminum alloy
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- nitrogen
- aluminium alloy
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Abstract
The invention relates to a four-stage composite purification technology of a cast aluminum alloy wheel hub, which is mainly suitable for a low-pressure casting process of aluminium alloy. The four-stage composite purification technology comprises the steps of: first-stage purification: removing gas and nonmetal impurities in a melt by blowing nitrogen into a smelting furnace and adding high-efficiency active fluxes to carry out composite refining; second-stage purification: installing a foamed ceramic filter screen at the liquid outlet of the smelting furnace to filter effluent aluminum alloy solution to remove slag; third-stage purification: blowing nitrogen into a pouring box to remove the gas of the aluminum alloy solution in the pouring box; and fourth-stage purification: introducing the nitrogen into a casting holding furnace to take away hydrogen in the aluminum alloy solution, and adding a refining agent and a slagging agent to the furnace to refine and remove the slag for the second time. The impurities and the slag and harmful gas in the aluminum alloy solution can be effectively removed by applying the four-stage composite purification technology, thereby improving the purity of the aluminum alloy solution and ensuring the production quality of aluminum alloy castings.
Description
Technical field:
The present invention relates to the four-stage composite purification technology of cast aluminum alloy wheel hub.
Background technology:
Aluminium alloy is to be subjected to nonmetal inclusion (AL
2O
3Deng) with one of the most serious metal of hydrogen contamination, so the molten aluminium alloy purifying treatment is to improve the important method of alloy property, also is the key that improves the molten aluminium alloy purity.Be accompanied, interact owing to be mingled with hydrogen in the aluminium liquid, these two processes of dehydrogenation and impurities removal are related and are also had any different, and various purifying methods all have a kind of main effect, but have another kind of effect concurrently.Therefore, only adopt a kind of technology in the production process, it is very difficult simultaneously effectively impurities removal and degasification.
Summary of the invention:
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of four-stage composite purification technology of cast aluminum alloy wheel hub is provided, can effectively get rid of and remove assorted slag and obnoxious flavour in the molten aluminium alloy by this The Application of Technology, improve the purity of molten aluminium alloy, guarantee the quality of production of aluminum alloy casting.
According to the four-stage composite purification technology of cast aluminum alloy wheel hub provided by the invention, comprise following purifying step:
First class purification:, remove gas and non-metallic inclusion in the melt by in smelting furnace, being blown into nitrogen and adding high-efficiency activated flux composite refining;
Secondary purification: at the smelting furnace liquid outlet foam ceramic filter net is set, to effusive molten aluminium alloy filter cleaner;
Three grades of purifications: in tundish, be blown into nitrogen, remove the gas of molten aluminium alloy in the tundish;
Level Four purifies:, the hydrogen in the molten aluminium alloy is taken out of, and added refining agent and slagging agent in stove by being blown into of nitrogen at the casting holding furnace, carry out refining and slagging-off again.
According to four-stage composite purification technology provided by the invention, have following advantage with respect to prior art:
The present invention gathers together multiple purifying method and forms the level Four composite purification, promptly in smelting furnace, undertaken purifying the first time by nitrogen and refining agent, undertaken purifying the second time by the foam ceramic filter net at the smelting furnace liquid outlet, in tundish, purify for the third time, in the casting holding furnace, undertaken the 4th time and purify by nitrogen, refining agent and slagging agent by nitrogen.Purify by these four times, the present invention can purify once or twice with respect to a kind of method of employing of the prior art, more effectively get rid of and remove assorted slag and obnoxious flavour in the molten aluminium alloy, improve the purity of molten aluminium alloy, guarantee the quality of production of aluminum alloy casting.
Embodiment:
Four-stage composite purification technology according to cast aluminum alloy wheel hub provided by the invention, mainly be applicable to the low-pressure casting process of aluminium alloy, it comprises: first class purification, by in smelting furnace, being blown into nitrogen and adding high-efficiency activated flux composite refining, remove gas and non-metallic inclusion in the melt; Secondary purification is provided with the foam ceramic filter net at the smelting furnace liquid outlet, to effusive molten aluminium alloy filter cleaner; Three grades of purifications are blown into nitrogen in tundish, remove the gas of molten aluminium alloy in the tundish; Level Four purifies, and, the hydrogen in the aluminium alloy solution is taken out of, and added refining agent and slagging agent in stove by being blown into of nitrogen at the casting holding furnace, carries out refining and slagging-off again.
As mentioned above, the purified frequency is 2 hours/time in the described smelting furnace, adds 1～2 kilogram high-efficiency activated flux at every turn.Described first class purification, three grades purify and level Four purify in the flow of nitrogen be 1.5～3 cubic metres/hour, jetting pressure is 0.25～0.35mpa.
The foregoing description is only for the usefulness that the present invention is described; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; under the situation that does not break away from the spirit and scope of the present invention; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be limited by each claim.
Claims (3)
1. the four-stage composite purification technology of a cast aluminum alloy wheel hub is characterized in that comprising following purifying step:
First class purification:, remove gas and non-metallic inclusion in the molten aluminium alloy by in smelting furnace, being blown into nitrogen and adding high-efficiency activated flux composite refining;
Secondary purification: at the smelting furnace liquid outlet foam ceramic filter net is set, to effusive molten aluminium alloy filter cleaner;
Three grades of purifications: in tundish, be blown into nitrogen, remove the gas of molten aluminium alloy in the tundish;
Level Four purifies:, the hydrogen in the molten aluminium alloy is taken out of, and added refining agent and slagging agent in stove by being blown into of nitrogen at the casting holding furnace, carry out refining and slagging-off again.
2. four-stage composite purification technology as claimed in claim 1 is characterized in that: the purified frequency is 2 hours/time in the described smelting furnace, adds 1～2 kilogram high-efficiency activated flux at every turn.
3. melting as claimed in claim 1 or 2 and low-pressure casting process is characterized in that: described first class purification, three grades purify and level Four purify in the flow of nitrogen be 1.5～3 cubic metres/hour, jetting pressure is 0.25～0.35mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810172150 CN101760634B (en) | 2008-11-12 | 2008-11-12 | Four-stage composite purification technology of cast aluminum alloy wheel hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810172150 CN101760634B (en) | 2008-11-12 | 2008-11-12 | Four-stage composite purification technology of cast aluminum alloy wheel hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101760634A true CN101760634A (en) | 2010-06-30 |
| CN101760634B CN101760634B (en) | 2013-04-24 |
Family
ID=42492013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810172150 Expired - Fee Related CN101760634B (en) | 2008-11-12 | 2008-11-12 | Four-stage composite purification technology of cast aluminum alloy wheel hub |
Country Status (1)
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| CN (1) | CN101760634B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085626A (en) * | 2017-12-15 | 2018-05-29 | 重庆友拓汽车零部件有限公司 | A kind of preparation process of corrosion-resistant automotive hub |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300861A (en) * | 2000-12-19 | 2001-06-27 | 上海交通大学 | Combined method for purifying molten aluminium and Al-alloy |
| CN1831172A (en) * | 2005-12-31 | 2006-09-13 | 云南冶金集团总公司 | High impact tough alloy material contg. Al, Si, Mgi used for making automobile hub and its producing method |
-
2008
- 2008-11-12 CN CN 200810172150 patent/CN101760634B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1300861A (en) * | 2000-12-19 | 2001-06-27 | 上海交通大学 | Combined method for purifying molten aluminium and Al-alloy |
| CN1831172A (en) * | 2005-12-31 | 2006-09-13 | 云南冶金集团总公司 | High impact tough alloy material contg. Al, Si, Mgi used for making automobile hub and its producing method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108085626A (en) * | 2017-12-15 | 2018-05-29 | 重庆友拓汽车零部件有限公司 | A kind of preparation process of corrosion-resistant automotive hub |
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| Publication number | Publication date |
|---|---|
| CN101760634B (en) | 2013-04-24 |
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Owner name: ZHEJIANG ZENT AUTO WHEEL CO., LTD. Free format text: FORMER OWNER: ZHENG DONGHAI Effective date: 20130608 |
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Effective date of registration: 20130608 Address after: 27 No. 321300 Zhejiang city in Yongkang Province Economic Development Zone South Park Avenue Patentee after: Zhejiang Zent Auto Wheel Co., Ltd. Address before: 27 No. 321300 Zhejiang province Yongkang City Hardware Technology Industrial Park, Park Avenue South Patentee before: Zheng Donghai |
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Granted publication date: 20130424 Termination date: 20171112 |
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| CF01 | Termination of patent right due to non-payment of annual fee |