CN101259524A - Design method of dash device for hard aluminum alloy semi-continuous casting - Google Patents
Design method of dash device for hard aluminum alloy semi-continuous casting Download PDFInfo
- Publication number
- CN101259524A CN101259524A CNA2008100239411A CN200810023941A CN101259524A CN 101259524 A CN101259524 A CN 101259524A CN A2008100239411 A CNA2008100239411 A CN A2008100239411A CN 200810023941 A CN200810023941 A CN 200810023941A CN 101259524 A CN101259524 A CN 101259524A
- Authority
- CN
- China
- Prior art keywords
- water
- casting
- ingot casting
- cast ingot
- water fender
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Continuous Casting (AREA)
Abstract
The invention provides a design method of a water blocking device for semi-continuous casting of hard aluminum alloy, the water blocking device comprises a water baffle plate body and springs, a divided structure is adopted in the water baffle plate body, all the parts are connected by the springs, the whole water blocking device is suspended under a crystallizer by a hinge or is directly supported on a casting platform, the part of the water baffle plate body which is contacted with the surface of a cast ingot is provided with a polymer material, and the working surface of the water baffle plate body is perpendicular with the surface of the cast ingot or forms a certain angle with the surface of the cast ingot. When in application, the outer surface of the cast ingot is tightly clamped at the same time of not obstructing the casting process, the secondary cooling water of the semi-continuous casting is blocked and shunted at the position of the water baffle plate, the cast ingot only receives part of the water cooling between the crystallizer and the water baffle plate, the lower part of the water baffle plate is carried out the natural air cooling; the cast ingot is repeatedly heated by a high temperature melt of the core part of the cast ingot, thus realizing the self-tempering effect of the cast ingot, effectively reducing the casting internal stress, preventing the cracks of the cast ingot and being applicable to the application of large-scale industrial production.
Description
Technical field
The present invention relates to a kind of method for designing of dash device for hard aluminum alloy semi-continuous casting, belong to the aluminum alloy semi-continuous casting technical field.
Background technology
Ultra-high-strength aluminum alloy typically refers to tensile strength and surpasses the above aluminium alloy of 500MPa, mainly is the Al-Zn-Mg-Cu line aluminium alloy.Ultra-high-strength aluminum alloy is owing to have high specific strength and hardness, and advantage such as corrosion resisting property and high toughness and be widely used in space flight, aviation field is the agent structure material of spacecrafts such as carrier rocket, spaceship and space station preferably.
High-alloying is the main means that improve duralumin, hard alumin ium alloy intensity, and in the duralumin, hard alumin ium alloy that with Al-Zn-Mg-Cu is representative, improving alloying element contents such as Zn, Mg, Cu is the major measure that improves aluminum alloy materials intensity.Eighties of last century fifties, the U.S. has succeeded in developing 7075 alloys, and alloying element total contents such as its Zn, Mg, Cu are 10%, 7050 alloys of later development and 7055 alloys, and alloying element total contents such as Zn, Mg, Cu are especially up to 12% and 14%.In recent years, be accompanied by the development of aeronautical material, when improving alloy strength, developed new alloy again with high damage tolerance, as 7010,7475,7150 and 7085 etc., all be when improving alloy element content, to reduce Fe, Si impurity content, with combination properties such as the stress corrosion resistant that improves material and endurances.Yet the development of aviation alloyed aluminium has proposed a new difficult problem for the cast form of material.Along with the increase of alloying element content, the reduction of Fe, Si impurity element, the freezing range of alloy increases, and crystallization nuclei reduces, in the cast form process, the ingot casting internal stress that is caused by solidification shrinkage is very big.
At present, vertical direct water-cooling semi-continuous casting (DC casting) method is the main mode of the strong aluminium alloy cast ingot of industrial preparation superelevation, has process stabilizing, automaticity height, the excellent characteristics of ingot quality.Yet in the time of in the semi-continuous casting process, the solidification temperature range wide ranges of ultra-high-strength aluminum alloy, plasticity are poor, and it is big that ingot solidification shrinks the internal stress that produces, and ingot casting ftractures when internal stress surpasses the strength degree of material.According to document announcement, with 7050 and 7055 alloys be the duralumin, hard alumin ium alloy ingot casting of representative in semi-continuous casting and casting finish that the back takes place to ftracture even the phenomenon of explosion is very serious, casting success ratio is far below other alloy kinds.
For improving the problem that it is difficult that the duralumin, hard alumin ium alloy ingot casting is shaped, external a lot of advanced persons' the foundry engieering of having developed in succession, as water fender technology, electromagnetic casting, gas sliding (air curtain) casting, low liquid level casting etc., these foundry engieerings have improved ingot quality to a certain extent, have improved the relatively poor problem of ingot casting shaping.Yet these foundry engieerings require the degree height to the automation control of equipment.And the technology that adopts for the cast duralumin alloy cast ingot, as the water fender technology, because its key equipment is complicated, water fender applies mode and applies the position and lacks technical basis, and China enterprise uses less.
Summary of the invention
The present invention is directed in the duralumin, hard alumin ium alloy ingot casting casting process and back problem easy to crack is finished in casting, a kind of suitable dash device for hard aluminum alloy semi-continuous casting is provided, can better satisfy duralumin, hard alumin ium alloy and cast needs.
Purpose of the present invention is achieved through the following technical solutions:
The method for designing of dash device for hard aluminum alloy semi-continuous casting, characteristics are: this baffle device for water comprises water fender body and spring, the water fender body adopts split-type structural, connect by spring between the each several part, whole baffle device for water by hinge hang on crystallizer below or directly frame on the casting platform, be provided with polymeric material at the contacted position of water fender body and ingot casting surface, the working face of water fender body and ingot casting surface are certain angle; In addition, for the circle ingot casting, the water fender body is 0.5～1.3 apart from the ratio of the distance of crystallizer lower edge and circle ingot casting diameter, and for flat ingot casting, the water fender body is 0.6～1.5 apart from the ratio of the distance of crystallizer lower edge and flat ingot casting thickness.
Further, the method for designing of above-mentioned dash device for hard aluminum alloy semi-continuous casting, the material of described water fender body are on-deformable metal material, specifically are to adopt stainless steel.
Further, the method for designing of above-mentioned dash device for hard aluminum alloy semi-continuous casting, described polymeric material is super heated rubber or plastics or rubber.
Again further, the method for designing of above-mentioned dash device for hard aluminum alloy semi-continuous casting, the angular range on the working face of described water fender body and ingot casting surface are 45 °～90 °.
The present invention design be suitable for the baffle device for water that cast duralumin alloy billet and slab ingot are used, when not hindering casting process, clamp the ingot casting outer surface, make the secondary cooling water of semi-continuous casting be blocked and shunt in the water fender position, cast the down-hole and flow directly into, ingot casting is only accepted the part water-cooled between crystallizer and the water fender during casting, water fender below natural air cooling; The present invention has realized ingot casting " self tempering " effect, thereby effectively reduces the casting internal stress, suppresses the ingot casting crackle.This baffle device for water design is unique, simple for structure, easy for installation, working stability, and long service life, economic benefit and social effect are very remarkable, are suitable for large-scale industrial production and use.
Description of drawings
Below in conjunction with accompanying drawing technical solution of the present invention is described further:
Fig. 1: the design sketch that applies baffle device for water in the semi-continuous casting process;
Fig. 2: circle ingot casting baffle device for water schematic top plan view;
Fig. 3: flat ingot casting baffle device for water schematic top plan view.
The implication of each Reference numeral sees the following form among the figure:
| Reference numeral | Implication | Reference numeral | Implication | | Implication | |
| 1 | |
2 | |
3 | |
|
| 4 | Baffle device for |
5 | |
6 | The ingot |
|
| 7 | |
8 | The water fender |
9 | Spring |
The specific embodiment
The invention provides a kind of baffle device for water that cast duralumin alloy billet and slab ingot are used that is suitable for, main effect is to clamp the ingot casting outer surface when not hindering casting process, make the secondary cooling water of semi-continuous casting be blocked and shunt in the water fender position, and flow directly in the casting well, ingot casting is only accepted the part water-cooled between crystallizer and the water fender in the casting process, and natural air cooling is realized in the water fender bottom.Like this, the intensity of cooling of whole ingot casting weakens, and baffle device for water below ingot casting temperature section gos up, and has realized ingot casting " self tempering " effect, thereby can effectively reduce the casting internal stress, suppresses the ingot casting crackle.
As Fig. 2, shown in Figure 3, baffle device for water becomes the geomery of needs according to the specifications design of circle ingot casting and flat ingot casting, baffle device for water 4 comprises water fender body 8 and spring 9, water fender body 8 adopts split-type structural, connect by spring 9 between the each several part, water fender body 8 materials are selected better, the on-deformable metal material of rigidity, as stainless steel etc.As Fig. 1, baffle device for water 4 by hinge 2 hang on crystallizer 1 lower end or directly frame on the casting platform, be provided with polymeric material 7 at water fender body 8 and contacted position, ingot casting surface, specifically can adopt super heated rubber, plastics, rubber etc.; The working face of water fender body 8 and ingot casting surface are certain angle, are beneficial to draining.The distance of baffle device for water and crystallizer is relevant with the specification of ingot casting, the specification of ingot casting is big more, baffle device for water is far away more apart from the position of crystallizer, for the circle ingot casting, baffle device for water is 0.5～1.3 apart from crystallizer lower edge distance with the ratio range of justifying the ingot casting diameter, for flat ingot casting, the water fender body is 0.6～1.5 apart from the ratio range of the distance of crystallizer lower edge and flat ingot casting thickness.The angular range on the working face of water fender body and ingot casting surface is controlled at 45 °～90 °.
During concrete the application, referring to Fig. 1, in the casting preparatory stage, move up into the inner chamber of crystallizer 1 on the dummy bar head, an end of hinge 2 is hung on the crystallizer lower edge, the other end is connected with water fender body 8, the connection spring 9 of tension baffle device for water clamps water fender body 8 and dummy bar head.Open fire door, aluminium alloy melt evenly flows in the crystallizer 1, and dummy bar head descends with setting speed when liquid level rises to certain altitude, and casting process begins.Ingot casting 5 is solidification forming under the once cooling of crystallizer and the secondary cooling effect of cooling water.When casting was initial, because the length of ingot casting less than the length of hinge 2, glides along the ingot casting surface after 3 pairs of ingot castings formation of the cooling water Quench, the intensity of cooling of whole ingot casting was higher.When ingot casting length surpasses hinge 2 length, the ingot casting side is clamped by baffle device for water 4, the secondary cooling water of ingot casting side is stopped by baffle device for water 4 and directly is discharged in the casting well, the ingot casting of baffle device for water 4 belows is in as air-cooled condition, ingot casting and extraneous heat-exchange capacity reduce, and internal temperature partly raises.Because duralumin, hard alumin ium alloy has as cast condition intensity height more, plasticity is poor, the internal stress of ingot casting is bigger in the casting process; And after applying baffle device for water 4, increased air cooling zone for ingot casting 5, and the temperature of whole ingot casting raises, and the casting internal stress is effectively discharged, thereby effectively reduces the tearing tendency of ingot casting.After carrying out repeatedly the 7150 duralumin, hard alumin ium alloy semi-continuous castings test that specification is 180 * 360mm, adopting the baffle device for water of the present invention's design, cracking phenomena does not all appear in ingot casting, and through practice examining, its result of use is very good.
It should be noted that the baffle device for water of the present invention's design can be fixed on the casting platform, adjust the position of baffle device for water by the height of support; Also baffle device for water can be hung on the crystallizer lower edge by hinge, adjust the position of baffle device for water by the length of hinge.This baffle device for water can be realized the effective dash in big specification duralumin, hard alumin ium alloy billet and the slab ingot casting process, can be in practical operation according to the appearance and size of the specifications design water fender body of ingot casting, and adjust the installation site of baffle device for water according to technological requirement, to guarantee reducing the ingot casting intensity of cooling in the casting process, discharge the purpose of ingot casting internal stress.The baffle device for water body adopts split-type structural, connect by spring each other, the elasticity of spring is suitable, both guaranteed that baffle device for water and ingot casting surface were adjacent to, stop secondary cooling water to move down, also avoid contacting that pressure is excessive hinders normally moving down of ingot casting simultaneously because of baffle device for water and ingot casting are surperficial along the ingot casting surface.
In addition, installation site for baffle device for water, it is the distance between baffle device for water working face and the crystallizer lower wall, can regulate according to arts demand, it is excessive that the intensity of cooling of ingot casting is reduced, and the solidified shell of ingot casting is thinner, casting flaws such as bleedout appear easily, if the distance is too far then causes between the ingot casting cooling zone longly, and ingot casting " self tempering " effect weakens, and reduces the dash effect.
In sum, modern design of the present invention, baffle device for water is simple for structure, and is easy for installation, and processing and fabricating is simple and easy.During application, effectively eliminated duralumin, hard alumin ium alloy ingot casting crackle, working stability, long service life can better satisfy duralumin, hard alumin ium alloy casting needs, is suitable for large-scale industrial production and uses, and has good application value.
Below only be concrete exemplary applications of the present invention, protection scope of the present invention is not constituted any limitation.All employing equivalents or equivalence are replaced and the technical scheme of formation, all drop within the rights protection scope of the present invention.
Claims (4)
1. the method for designing of dash device for hard aluminum alloy semi-continuous casting, it is characterized in that: this baffle device for water comprises water fender body and spring, the water fender body adopts split-type structural, connect by spring between the each several part, whole baffle device for water by hinge hang on the crystallizer lower edge or directly frame on the casting platform, be provided with polymeric material at contacted position, water fender body and ingot casting surface, the working face of water fender body is surperficial perpendicular or be certain angle with ingot casting; In addition, for the circle ingot casting, the water fender body is 0.5～1.3 apart from the ratio of the distance of crystallizer lower edge and circle ingot casting diameter, and for flat ingot casting, the water fender body is 0.6～1.5 apart from the ratio of the distance of crystallizer lower edge and flat ingot casting thickness.
2. the method for designing of dash device for hard aluminum alloy semi-continuous casting according to claim 1, it is characterized in that: the material of described water fender body is on-deformable metal material, specifically is to adopt stainless steel.
3. the method for designing of dash device for hard aluminum alloy semi-continuous casting according to claim 1, it is characterized in that: described polymeric material is super heated rubber or plastics or rubber.
4. the method for designing of dash device for hard aluminum alloy semi-continuous casting according to claim 1, it is characterized in that: the angular range between the working face of described water fender body and the ingot casting surface is at 45 °～90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023941A CN100588482C (en) | 2008-04-22 | 2008-04-22 | The method for designing of dash device for hard aluminum alloy semi-continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810023941A CN100588482C (en) | 2008-04-22 | 2008-04-22 | The method for designing of dash device for hard aluminum alloy semi-continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101259524A true CN101259524A (en) | 2008-09-10 |
| CN100588482C CN100588482C (en) | 2010-02-10 |
Family
ID=39960335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810023941A Active CN100588482C (en) | 2008-04-22 | 2008-04-22 | The method for designing of dash device for hard aluminum alloy semi-continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100588482C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949600A (en) * | 2014-05-12 | 2014-07-30 | 东北轻合金有限责任公司 | Crystallizer for preparing superhard aluminum alloy flat cast ingot and use method of crystallizer |
| CN104128579A (en) * | 2014-07-10 | 2014-11-05 | 广西南南铝加工有限公司 | Water wiping device for casting hard aluminum alloy |
| CN104368771A (en) * | 2014-12-08 | 2015-02-25 | 西南铝业（集团）有限责任公司 | Wiping device for hard alloy casting |
| CN105414501A (en) * | 2015-12-19 | 2016-03-23 | 西南铝业（集团）有限责任公司 | Water wiper for crystallizer |
| CN105689666A (en) * | 2016-02-23 | 2016-06-22 | 东北大学 | Deep backheating semi-continuous casting device and method for nonferrous metal |
| CN106001524A (en) * | 2016-07-19 | 2016-10-12 | 中国瑞林工程技术有限公司 | Frame copper alloy material casting set cooling system and operation method thereof |
| CN106270430A (en) * | 2016-08-25 | 2017-01-04 | 上海交通大学 | The semi-continuous casting method of aluminum based composite material enhanced by granules in situ |
| CN108986629A (en) * | 2018-08-30 | 2018-12-11 | 中南大学 | A kind of Twin-Roll Strip Casting device simulator and its method |
| CN109036073A (en) * | 2018-08-30 | 2018-12-18 | 中南大学 | A kind of devices and methods therefor that simulation thin belt continuous casting crystal roller surface oxidation film generates |
| WO2021035604A1 (en) * | 2019-08-28 | 2021-03-04 | 东北大学 | Low-cold electromagnetic semi-continuous casting device and method |
-
2008
- 2008-04-22 CN CN200810023941A patent/CN100588482C/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949600A (en) * | 2014-05-12 | 2014-07-30 | 东北轻合金有限责任公司 | Crystallizer for preparing superhard aluminum alloy flat cast ingot and use method of crystallizer |
| CN104128579A (en) * | 2014-07-10 | 2014-11-05 | 广西南南铝加工有限公司 | Water wiping device for casting hard aluminum alloy |
| CN104368771A (en) * | 2014-12-08 | 2015-02-25 | 西南铝业（集团）有限责任公司 | Wiping device for hard alloy casting |
| CN105414501A (en) * | 2015-12-19 | 2016-03-23 | 西南铝业（集团）有限责任公司 | Water wiper for crystallizer |
| CN105689666A (en) * | 2016-02-23 | 2016-06-22 | 东北大学 | Deep backheating semi-continuous casting device and method for nonferrous metal |
| CN105689666B (en) * | 2016-02-23 | 2018-08-03 | 东北大学 | A kind of non-ferrous metal depth backheat semi-continuous casting device and its method |
| CN106001524A (en) * | 2016-07-19 | 2016-10-12 | 中国瑞林工程技术有限公司 | Frame copper alloy material casting set cooling system and operation method thereof |
| CN106270430A (en) * | 2016-08-25 | 2017-01-04 | 上海交通大学 | The semi-continuous casting method of aluminum based composite material enhanced by granules in situ |
| CN108986629A (en) * | 2018-08-30 | 2018-12-11 | 中南大学 | A kind of Twin-Roll Strip Casting device simulator and its method |
| CN109036073A (en) * | 2018-08-30 | 2018-12-18 | 中南大学 | A kind of devices and methods therefor that simulation thin belt continuous casting crystal roller surface oxidation film generates |
| WO2021035604A1 (en) * | 2019-08-28 | 2021-03-04 | 东北大学 | Low-cold electromagnetic semi-continuous casting device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100588482C (en) | 2010-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100588482C (en) | The method for designing of dash device for hard aluminum alloy semi-continuous casting | |
| CN108893661B (en) | Wide thin-wall 6-series aluminum alloy section for high-speed motor train unit and preparation method thereof | |
| CN108866363B (en) | 6082 aluminum alloy thick-wall pipe production process | |
| CN102240781B (en) | Equipment and method for casting plurality of aluminum alloy ingots with small diameters by using vertical direct chilling casting (DC) | |
| CN101450372B (en) | Ingot-casting area water cooling technique during aluminum alloy semi-continuous casting | |
| CN103451583B (en) | The method producing aircraft wing stringer section bar | |
| EP3012044B1 (en) | Continuous casting method for casting for extra thick steel sheet | |
| CN104128579A (en) | Water wiping device for casting hard aluminum alloy | |
| CN203972803U (en) | A kind of duralumin, hard alumin ium alloy casting wiper | |
| CN101386061A (en) | Starter head for semi-continuous casting the hard aluminum alloy billet | |
| Gjestland et al. | Advancements in high pressure die casting of magnesium | |
| CN208712810U (en) | A kind of alloy smelting casting slab ingot device | |
| CN103934267B (en) | A kind of two cooling zones double-roller rolling device | |
| JP3765535B2 (en) | Continuous casting method of aluminum ingot | |
| CN108607973A (en) | A kind of method for casting aluminium alloy generating elongate column crystal solidification tissue | |
| CN114632920B (en) | New energy automobile power battery shell and mould based on preparation of AlSi10MnMg alloy | |
| US11344947B2 (en) | Method for forming battery bracket by semi-solid die casting | |
| Westengen et al. | Twin roll casting of aluminium: the occurrence of structure inhomogeneities and defects in as cast strip | |
| CN104338921B (en) | Exhaust structure in the die casting of a kind of Ultra-Low Speed die casting front bearing cover of cam shaft | |
| CN106493339B (en) | A method of aluminium alloy spring base is produced with Horizontal type extrusion casting machine | |
| CN101306463B (en) | Non-equal-height water blocking device for casting super zisium slab and application process thereof | |
| KR102666365B1 (en) | Reduces cracking susceptibility to 7xxx series direct cooled (DC) cast ingots | |
| JP3619377B2 (en) | Billet continuous casting method and apparatus | |
| CN104174817A (en) | Casting and heat-treating processes of climbing machine connecting seat of ocean platform | |
| CN114472839A (en) | Forming method of high-strength and high-toughness rare earth magnesium alloy cylindrical casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171121 Address after: 102209 Changping District City, Beiqijia, the future of science and technology in the south area of the town of Beijing Patentee after: China Aluminum Material Applied Research Institute Co Ltd Address before: Suzhou City, Jiangsu province 215021 Industrial Park No. 200 Shen Hu Road Patentee before: Suzhou Non-ferrous Metal academy Co., Ltd. |
|
| TR01 | Transfer of patent right |