CN105521995A - Aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions - Google Patents
Aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions Download PDFInfo
- Publication number
- CN105521995A CN105521995A CN201510894651.4A CN201510894651A CN105521995A CN 105521995 A CN105521995 A CN 105521995A CN 201510894651 A CN201510894651 A CN 201510894651A CN 105521995 A CN105521995 A CN 105521995A
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- China
- Prior art keywords
- casting
- aluminum alloy
- arc
- roller
- roll
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/08—Lubricating, cooling or heating rolls internally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/08—Lubricating, cooling or heating rolls internally
- B21B2027/083—Lubricating, cooling or heating rolls internally cooling internally
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The embodiment of the invention discloses an aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions. The aluminum alloy sheet cast-rolling mechanism comprising a casting roller, a pouring nozzle and a front box, wherein the pouring nozzle comprises a pouring basin, a cover plate and a pouring gate are arranged on the pouring basin, and the front end of the pouring basin is provided with an arc-shaped open section and an end head; and the front box is arranged on the pouring gate, and the bottom of the front box is communicated with the pouring gate. According to the aluminum alloy sheet cast-rolling mechanism, the casting roller is matched with the arc-shaped open section to form a first contact arc region, and the casting roller in a circular arc runner of the first contact arc region has an effect on rapidly cooling an aluminum alloy melt, so that the temperature of the aluminum alloy melt approaches to or is within a two-phase region when the aluminum alloy melt enters a second contact arc region (a cast-rolling region), the amount of crystal nucleuses is remarkably increased, fine microscopic structures are formed, and meanwhile serious cast-rolling center segregation is avoided.
Description
Technical field
The present invention relates to aluminum alloy plate materials production field, particularly relate to the two roll casting zone casting mechanism of a kind of aluminum alloy plate materials.
Background technology
7075 aluminium alloys belong to ultra-high-strength aluminum alloy, are the indispensable structural materials of aviation field.The method of traditional mode of production 7075 sheet alloy is Hot rolling, and operation is various, cost is high.Casting and roll process, due to the particularity of its technique, has the advantages such as operation is simple, flow process is short, cost of investment is low, energy-conserving and environment-protective.If can replace traditional Hot rolling with casting and roll process to produce 7075 aluminum alloy plate materials, will and greatly reduce costs, energy-saving and emission-reduction, have fairly obvious economic worth.But because 7075 alloy total alloying element content are high, in strip casting process, easily produce serious center segregation, the not molten eutectic phase of strand is many, easily forms thick crystalline phase in as-cast structure, follow-up hot rolling and cold rolling in be easy to produce lamination, be difficult to produce 7075 qualified sheet materials; So far, common casting and roll process does not also use in 7075 aluminum alloy plate materials are produced.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provide a kind of aluminum alloy plate materials two roll casting zone casting mechanism, the mode by casting produces 7075 aluminium alloys, prevent strip casting process aluminium alloy plate from producing metallic crystal defect, structure is simple, and production efficiency is high, energy-conserving and environment-protective.
In order to solve the problems of the technologies described above, embodiments provide the two roll casting zone casting mechanism of a kind of aluminum alloy plate materials, comprising Casting Roller, casting mouthpiece and front case; Described stopper noz(zle) attached bag draws together casting groove, and described casting groove is provided with cover plate and casting gate, and front end is provided with arc opening section and termination; Described front case is located on described casting gate, is communicated with bottom it with described casting gate; Described Casting Roller comprises Casting Roller and lower Casting Roller, and upper Casting Roller coordinates formation first contact arc district with arc opening section, and lower Casting Roller is located at immediately below Casting Roller, forms the second contact arc district between upper Casting Roller and lower Casting Roller.
As the improvement of such scheme, aluminium alloy melt carries out first time and contacts with direct casting roll contact in the first contact arc district, carries out second time contact in the second contact arc district.
As the improvement of such scheme, the width of described arc opening section becomes large gradually towards direction, termination.
As the improvement of such scheme, described termination is provided with the arc transition tangent with arc opening section.
As the improvement of such scheme, in described upper Casting Roller, be connected with cooling fluid.
As the improvement of such scheme, described arc transition length 70-100mm, distance casting groove bottom land degree of depth 2-4mm.
Implement the embodiment of the present invention, there is following beneficial effect:
In the present invention, Casting Roller coordinates formation first contact arc district with arc opening section, because the Casting Roller in the circular arc runner of the first contact zone is to the quick cooling effect of aluminium alloy melt, the temperature of aluminium alloy melt when entering second contact arc district (roll casting zone) close to or enter two-phase section, nucleus quantity significantly increases, form tiny microscopic structure, avoid the generation of serious casting center segregation simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the two roll casting zone casting mechanism of a kind of aluminum alloy plate materials of the present invention;
Fig. 2 is the stopper noz(zle) minor structure schematic diagram of the two roll casting zone casting mechanism of a kind of aluminum alloy plate materials of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
As depicted in figs. 1 and 2, embodiments provide the two roll casting zone casting mechanism of a kind of aluminum alloy plate materials, comprise Casting Roller, casting mouthpiece 2 and front case 3; Described casting mouthpiece 2 comprises casting groove 21, and described casting groove 21 is provided with cover plate 22 and casting gate 23, and front end is provided with arc opening section 24 and termination 25; Described front case 3 is located on described casting gate 23, is communicated with bottom it with described casting gate 23; Described Casting Roller comprises Casting Roller 1a and lower Casting Roller 1b, and upper Casting Roller 1a coordinates formation first contact arc district with arc opening section 24, and lower Casting Roller 1b is located at immediately below Casting Roller 1a, forms the second contact arc district between upper Casting Roller 1a and lower Casting Roller 1b.
In the present invention, Casting Roller 1a coordinates formation first contact arc district with arc opening section 24, because the Casting Roller in the circular arc runner of the first contact zone is to the quick cooling effect of aluminium alloy melt, the temperature of aluminium alloy melt when entering second contact arc district (roll casting zone) close to or enter two-phase section, nucleus quantity significantly increases, form tiny microscopic structure, avoid the generation of serious casting center segregation simultaneously.
Preferably, aluminium alloy melt contacts with upper Casting Roller 1a in the first contact arc district and carries out first time and contact, and carries out second time contact in the second contact arc district.The present invention relies on the cooling effect in the first contact arc district to make high temperature aluminium alloys melt fast cooling near liquidus, even arrive two-phase section temperature, then rely on the induced effect of gravity and Casting Roller to flow into the second contact arc district smoothly to carry out solidifying and being out of shape, realize two cooling zones rolling casting technology.
Preferably, the width of described arc opening section 24 becomes large gradually towards direction, termination 25.In existing casting-rolling technology, when melt flows out lip, its temperature must ensure on liquidus temperature, unimpeded to ensure its flowing, prevent melt from solidifying at lip, hinder the flowing of melt, and in two roll casting zone casting, be an end face of lip with the mouthpiece part of melt contacts, and its width becomes greatly slightly gradually towards direction, termination 25, only otherwise be solidified to the flowing that would not affect melt in the first contact arc district.
Preferably, described termination 25 is provided with the arc transition 26 tangent with arc opening section 24, and arc radius is not less than 10mm.
Preferably, cooling fluid is connected with in described upper Casting Roller 1a.Aluminium alloy melt temperature under the cooling effect of upper Casting Roller 1a can drop to two-phase section temperature from pouring temperature fast, so just ensures that aluminium alloy melt enters semi-solid state after the cooling through arc opening section 24.
Preferably, described arc transition 26 length 70-100mm, distance casting groove 21 bottom land degree of depth 2-4mm.
Below three kinds of specific embodiments of the present invention:
Embodiment 1:
Casting Roller diameter is 920mm, first contact zone arc length length is 100mm, the degree of depth is 3.0mm, mouthpiece lower plate and lower Casting Roller 1b contact point place mouthpiece 2 opening degree of namely casting is 20mm, roll is 67mm, roll gap is 10mm, and 7075 aluminium alloy pouring temperatures are 680 DEG C, and roll casting speed is 1.5m/min.
Embodiment 2:
Casting Roller diameter is 680mm, and the first contact zone arc length length is 60mm, and the degree of depth is 2mm, mouthpiece lower plate and lower Casting Roller 1b contact point place mouthpiece 2 opening degree of namely casting is 20mm, and roll is 58mm, and roll gap is 10mm, 7075 aluminium alloy pouring temperatures are 685 DEG C, and roll casting speed is 0.8m/min.
Embodiment 3:
Casting Roller diameter is 860mm, first contact zone arc length length is 80mm, the degree of depth is 2.5mm, mouthpiece lower plate and lower Casting Roller 1b contact point place mouthpiece 2 opening degree of namely casting is 20mm, roll is 71mm, roll gap is 8mm, and 7075 aluminium alloy pouring temperatures are 675 DEG C, and roll casting speed is 1.6m/min.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (6)
1. the two roll casting zone casting mechanism of aluminum alloy plate materials, is characterized in that, comprises Casting Roller, casting mouthpiece and front case; Described stopper noz(zle) attached bag draws together casting groove, and described casting groove is provided with cover plate and casting gate, and front end is provided with arc opening section and termination; Described front case is located on described casting gate, is communicated with bottom it with described casting gate; Described Casting Roller comprises Casting Roller and lower Casting Roller, and upper Casting Roller coordinates formation first contact arc district with arc opening section, and lower Casting Roller is located at immediately below Casting Roller, forms the second contact arc district between upper Casting Roller and lower Casting Roller.
2. the two roll casting zone casting mechanism of aluminum alloy plate materials as claimed in claim 1, is characterized in that, aluminium alloy melt carries out first time and contacts with direct casting roll contact in the first contact arc district, carry out second time contact in the second contact arc district.
3. the two roll casting zone casting mechanism of aluminum alloy plate materials as claimed in claim 1, it is characterized in that, the width of described arc opening section becomes large gradually towards direction, termination.
4. the two roll casting zone casting mechanism of aluminum alloy plate materials as claimed in claim 1, it is characterized in that, described termination is provided with the arc transition tangent with arc opening section.
5. the two roll casting zone casting mechanism of aluminum alloy plate materials as claimed in claim 1, is characterized in that, be connected with cooling fluid in described upper Casting Roller.
6. the two roll casting zone casting mechanism of aluminum alloy plate materials as claimed in claim 4, is characterized in that, described arc transition length 70-100mm, distance casting groove bottom land degree of depth 2-4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894651.4A CN105521995A (en) | 2015-12-08 | 2015-12-08 | Aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510894651.4A CN105521995A (en) | 2015-12-08 | 2015-12-08 | Aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions |
Publications (1)
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| CN105521995A true CN105521995A (en) | 2016-04-27 |
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| CN201510894651.4A Pending CN105521995A (en) | 2015-12-08 | 2015-12-08 | Aluminum alloy sheet cast-rolling mechanism with double cast-rolling regions |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100084053A1 (en) * | 2008-10-07 | 2010-04-08 | David Tomes | Feedstock for metal foil product and method of making thereof |
| CN102851551A (en) * | 2012-09-04 | 2013-01-02 | 江阴新仁科技有限公司 | Aluminum alloy evaporator inner wall thin plate and continuous casting rolling production process thereof |
| CN103215480A (en) * | 2013-04-15 | 2013-07-24 | 东北大学 | Cast rolling production method of 4343 aluminum alloy plate |
| CN103934267A (en) * | 2014-03-07 | 2014-07-23 | 东北大学 | Double-cooling-area and double-roller cast rolling device |
| CN204396813U (en) * | 2014-11-25 | 2015-06-17 | 四川金岳新型材料有限公司 | Aluminium alloy narrow boards band continuous casting and rolling device |
-
2015
- 2015-12-08 CN CN201510894651.4A patent/CN105521995A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100084053A1 (en) * | 2008-10-07 | 2010-04-08 | David Tomes | Feedstock for metal foil product and method of making thereof |
| CN102851551A (en) * | 2012-09-04 | 2013-01-02 | 江阴新仁科技有限公司 | Aluminum alloy evaporator inner wall thin plate and continuous casting rolling production process thereof |
| CN103215480A (en) * | 2013-04-15 | 2013-07-24 | 东北大学 | Cast rolling production method of 4343 aluminum alloy plate |
| CN103934267A (en) * | 2014-03-07 | 2014-07-23 | 东北大学 | Double-cooling-area and double-roller cast rolling device |
| CN204396813U (en) * | 2014-11-25 | 2015-06-17 | 四川金岳新型材料有限公司 | Aluminium alloy narrow boards band continuous casting and rolling device |
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Application publication date: 20160427 |
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