CN102039387A - Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology - Google Patents
Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology Download PDFInfo
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- CN102039387A CN102039387A CN 201010193538 CN201010193538A CN102039387A CN 102039387 A CN102039387 A CN 102039387A CN 201010193538 CN201010193538 CN 201010193538 CN 201010193538 A CN201010193538 A CN 201010193538A CN 102039387 A CN102039387 A CN 102039387A
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- ingot casting
- aluminum bronze
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- continuous ingot
- coverture
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Abstract
The invention provides an aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology. During the production of aluminum bronze QA110-4-4 by a semi-continuous ingot casting method, a mixture prepared from cinders and cryolite according to a certain proportion is used as a covering agent for producing the aluminum bronze QA110-4-4 with the semi-continuous ingot casting method, and the covering agent is used in a thin covering way, that is to say, the covering agent is in a form of powder which is uniformly and continuously spread on the melt surface with the vibration of a crystallizer, and the thickness of the covering agent spread every time is not larger than 1mm. The product provided by the invention has the characteristics of high finished product ratio, dense texture, excellent metallographic structure, high product strength, favorable plasticity and toughness, strong abrasion and corrosion resistance and the like.
Description
Technical field: the present invention relates to the semicontinuous ingot casting technology of the thin covering of aluminium bronze QA110-4-4.
Background technology: ingot mould ingot casting method or horizontal continuous casting method, vertical semicontinuous ingot casting method are generally being adopted in the preparation of aluminium bronze QA110-4-4.No matter adopt which kind of method, because higher aluminium content in the alloy, the oxidation tendency of QA110-4-4 aluminium bronze is more serious, and aluminium bronze is air-breathing easily in fusion-casting process to generate Al with oxidation
2O
3The Al of complete densification
2O
3Film can stop the continuation oxidation of copper liquid, but the rolling to melt in the vibration of the stirring of melt, crystallizer and the crystallizer all might make fine and close Al in the fusion process
2O
3Film breaks becomes block Al
2O
3And lose protective effect to melt.For the casting of this alloy, adopted coverture often, coverture is the prescription that adopts " charcoal ash+ice crystal+borax " usually in the past, and carries out the thick-layer covering, and coverture thickness reaches 20-30mm.The block Al that is present in the melt top layer in the casting process
2O
3Along with melt rolls to the crystallizer inwall, because of hardening by cooling, very easily assemble slagging scorification, and then folded in the gap of ingot casting and crystallizer wall together with the coverture of limit portion, cause metal solidification process the partial discontinuous phenomenon to occur, thereby form slag inclusion, cold shut defective and reduce ingot quality, still can't remove the slag inclusion layer fully even railway carriage processing thickness reaches 5-10mm.These defectives have a strong impact on the lumber recovery and the mechanical property of ingot casting, cause when serious that whole ingot casting scraps.Therefore, the suitable coverture of necessary selection is protected melt, with preparation high-quality QA110-4-4 aluminium bronze ingot casting.
At the high characteristics of aluminium content in the QA110-4-4 aluminium bronze, in order to obtain high-quality aluminium bronze ingot casting, coverture will be brought into play the effect of two aspects simultaneously.On the one hand will stop melt contact with atmosphere and produce air-breathing oxidation, coverture also will react with minimizing with oxide and enter block Al in the crystallizer wall gap on the other hand
2O
3Quantity, thereby the Al in the minimizing ingot casting
2O
3Slag inclusion.Because the many sport technique segments in the processing and preparing are difficult to hold, the production cost of aluminium bronze QA110-4-4 is generally higher, yield rate is lower, so the enterprise of domestic this alloy of batch process seldom, especially high-quality aluminium bronze QA110-4-4 can't satisfy the demand of China's industrial development especially.
Summary of the invention: purpose of the present invention provides the thin covering of aluminium bronze QA110-4-4 semicontinuous ingot casting technology at above-mentioned present situation exactly.Characteristics such as this explained hereafter aluminium bronze has yield rate height, dense structure, metallographic structure is good, product strength is high, plasticity and good toughness and wear and corrosion behavior are strong.
Purpose of the present invention can realize by following scheme.
This experimental design is chosen the mixture of meticulous Powdered " charcoal ash+ice crystal " as the melt coverture in the crystallizer, and operate in a kind of " thin covering " mode, be that coverture is with powder type, along with the vibration of crystallizer evenly is sprinkling upon bath surface continuously, and the coverture thickness that at every turn is sprinkled into is less than 1mm.Ice crystal in the coverture makes the Al of bath surface
2O
3Film dissolves rapidly, significantly improves the flowability of bath surface, thereby avoids Al
2O
3Assemble slagging scorification and fold into the ingot casting top layer near the crystallizer inwall, formation is mingled with and the cold shut defective.The charcoal ash that adds simultaneously can reduce contacting of melt and air on the one hand, on the other hand with playing lubrication behind the bath surface metal inflow crystallizer inwall.
This technology not only can reach effective covering effect, can reduce the dreg defect on ingot casting top layer, thereby improves the quality and the lumber recovery of ingot casting; Also can reduce the consumption of coverture, reduce production costs.
Claims (2)
1. the semicontinuous ingot casting technology of the thin covering of aluminium bronze QA110-4-4 is characterized in that adopting " charcoal ash+ice crystal " to form coverture, and the charcoal ash, the ice crystal that use in the coverture carry out proportioning in 33%: 67% ratio.
2. described by profit requirement 1, use coverture in the aluminium bronze QA110-4-4 ingot casting production technology, and be evenly to be sprinkling upon bath surface continuously by a kind of " thin covering ", the coverture thickness that at every turn is sprinkled into is less than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010193538 CN102039387B (en) | 2010-05-25 | 2010-05-25 | Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010193538 CN102039387B (en) | 2010-05-25 | 2010-05-25 | Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology |
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| Publication Number | Publication Date |
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| CN102039387A true CN102039387A (en) | 2011-05-04 |
| CN102039387B CN102039387B (en) | 2013-03-13 |
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| CN 201010193538 Active CN102039387B (en) | 2010-05-25 | 2010-05-25 | Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102605201A (en) * | 2012-03-21 | 2012-07-25 | 南昌大学 | Covering agent for copper and copper alloy smelting |
| CN103128242A (en) * | 2011-12-01 | 2013-06-05 | 胡遐秋 | Aluminum bronze semicontinuous ingot casting process |
| CN111979448A (en) * | 2020-08-21 | 2020-11-24 | 孙牛 | QAL10-5-4 aluminum bronze alloy bar production process |
| CN112030034A (en) * | 2020-09-04 | 2020-12-04 | 孙勇 | Production process of high-quality QAL10-5-4 aluminum bronze alloy |
Citations (5)
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| US3942580A (en) * | 1973-04-27 | 1976-03-09 | Foseco International Limited | Casting of ingots |
| US4036282A (en) * | 1974-09-04 | 1977-07-19 | Foseco International Limited | Process of ingot casting |
| CN1389435A (en) * | 2002-04-30 | 2003-01-08 | 上海交通大学 | Coating formula for filtering non-metallic inclusion in aluminium melt |
| CN1570162A (en) * | 2004-05-13 | 2005-01-26 | 上海交通大学 | Magnesium and magnesium alloy composite protection fire-proof covering flux and its production method |
| CN1614051A (en) * | 2003-11-04 | 2005-05-11 | 中南大学 | Solvent for high-temperature melting heat-resistant aluminium alloy |
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2010
- 2010-05-25 CN CN 201010193538 patent/CN102039387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3942580A (en) * | 1973-04-27 | 1976-03-09 | Foseco International Limited | Casting of ingots |
| US4036282A (en) * | 1974-09-04 | 1977-07-19 | Foseco International Limited | Process of ingot casting |
| CN1389435A (en) * | 2002-04-30 | 2003-01-08 | 上海交通大学 | Coating formula for filtering non-metallic inclusion in aluminium melt |
| CN1614051A (en) * | 2003-11-04 | 2005-05-11 | 中南大学 | Solvent for high-temperature melting heat-resistant aluminium alloy |
| CN1570162A (en) * | 2004-05-13 | 2005-01-26 | 上海交通大学 | Magnesium and magnesium alloy composite protection fire-proof covering flux and its production method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103128242A (en) * | 2011-12-01 | 2013-06-05 | 胡遐秋 | Aluminum bronze semicontinuous ingot casting process |
| CN102605201A (en) * | 2012-03-21 | 2012-07-25 | 南昌大学 | Covering agent for copper and copper alloy smelting |
| CN111979448A (en) * | 2020-08-21 | 2020-11-24 | 孙牛 | QAL10-5-4 aluminum bronze alloy bar production process |
| CN112030034A (en) * | 2020-09-04 | 2020-12-04 | 孙勇 | Production process of high-quality QAL10-5-4 aluminum bronze alloy |
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|---|---|
| CN102039387B (en) | 2013-03-13 |
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Application publication date: 20110504 Assignee: Guixi Junda special Copper Co. Ltd. Assignor: Hu Xiaqiu Contract record no.: 2013360000141 Denomination of invention: Aluminum bronze QA (Quality Assessment) 110-4-4 thin covering semi-continuous ingot casting technology Granted publication date: 20130313 License type: Exclusive License Record date: 20130930 |
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Assignee: Guixi Junda special Copper Co. Ltd. Assignor: Hu Xiaqiu Contract record no.: 2013360000141 Date of cancellation: 20160119 |
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Effective date of registration: 20160329 Address after: 330000, Jiangxi Province, Nanchang provincial government compound, East Fourth Road, dragon building, block C, room 409 Patentee after: Guixi Junda special Copper Co. Ltd. Address before: 335400 Jiangxi city of Yingtan province Guixi city Guixi Junda special Copper Co. Ltd. Patentee before: Hu Xiaqiu |