CN106493340B - A kind of roll-casting of magnesium alloy turns liquid system and device - Google Patents
A kind of roll-casting of magnesium alloy turns liquid system and device Download PDFInfo
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- CN106493340B CN106493340B CN201611073074.3A CN201611073074A CN106493340B CN 106493340 B CN106493340 B CN 106493340B CN 201611073074 A CN201611073074 A CN 201611073074A CN 106493340 B CN106493340 B CN 106493340B
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- liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/02—Pressure casting making use of mechanical pressure devices, e.g. cast-forging
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- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
Abstract
Present invention relates particularly to a kind of novel magnesium alloy castings to turn liquid system and device, belongs to magnesium alloy board casting unit equipment technical field.For at present with roll-casting of magnesium alloy turning liquid system exist：Preceding case liquid level is unstable, system temperature and flow control are inaccurate, difficult in maintenance etc., easily cause Casting Rolled Sheet band solidify uneven, easy is formationed be segregated, severe edge fracture and the defects of spillage of material.The system and device has been invented, including：Servo with lower end tapered bore turns liquid pump, adaptive thermally expand turns case and multi-functional head cover, precise control of flew blocking device, liquid level and Cryocooler Temperature Closed Loop Control System etc. before liquid pipe, combined type.The present invention provides a kind of safety, it is economical, turn liquid system and device convenient for the roll-casting of magnesium alloy of maintenance, the system and standing furnace and tilting casting and rolling machine is convenient docks, and realize temperature and precise control of flew in system.It provides safeguard to improve the material quality of casting magnesium alloy board, lumber recovery and reducing cost, there is broad prospect of application.
Description
Technical field
The invention belongs to magnesium alloy board casting unit equipment technical fields, and in particular to a kind of roll-casting of magnesium alloy turns liquid system
Bulk cargo is set.
Background technology
Roll-casting of magnesium alloy is the organic unity by molten state alloy graining and rolling deformation, i.e., aluminium alloy is in crystallization and freezing
Pressure processing and plastic deformation are born simultaneously, all processes from liquid metal to solid-state strip is completed within a short period of time, is
A kind of near-net forming, short route magnesium alloy board production technology.Traditional hot-rolled process is eliminated, production technology is simplified, is shortened
Production cycle saves mass energy, reduces equipment investment, reduces production cost, while the strip that casting goes out can get preferably
Microstructure and good mechanical property have huge technology and the economic development potentialities.
The units such as Thyssen company, Australian CouncilforScientificandIndustrialResearch O take the lead in having developed magnesium alloy twin-roll thin strip casting equipment.In
Luoyang Copper Processing Group Co Ltd, the Shanxi silver brilliance magnesium company of state successively establish the magnesium that can produce breadth 600mm
Alloy casting board assembly line.However there is problem following prominent in these production lines in various degree：1. molten bath or preceding case liquid level are unstable
Determine and causes oxidation, burning, even explodes；2. temperature and pouring flow rate control are inaccurate, cause the solidification of Casting Rolled Sheet band it is uneven,
Easily form the mass defects such as segregation and severe edge fracture；3. casting complete or catastrophic failure in the case of, in casting system magnesium liquid without
Method recycles, and causes great security risk and waste of material；4. preceding case is overall structure, it is not easy to clear up, and it keeps the temperature
Heating device is not easy to repairing etc. when breaking down.
Therefore, the present invention develops a kind of novel magnesium alloy casting for the bottleneck problem that above-mentioned roll-casting of magnesium alloy process faces
It rolls and turns liquid system and device, being fed link for roll-casting of magnesium alloy strip provides technical guarantee.The device has broad application prospects
With great economy and social benefit.
Invention content
Turn liquid system and device it is an object of the present invention to provide a kind of safety, economy, convenient for the roll-casting of magnesium alloy of maintenance, to improve
It the material quality of casting magnesium alloy board, lumber recovery and reduces cost and provides safeguard.The liquid system and device that turns can be with standing
Stove and tilting casting and rolling machine convenient docking and maintenance under the premise of ensuring safety, and realize turn standing furnace liquid level during liquid,
Temperature and precise control of flew in preceding case liquid level, system；When rolling line breaks down, preceding case and turn lossless time of magnesium liquid in liquid system
It flow to standing furnace；Preceding case liner is separable with shell, is convenient to clean, safeguards.
To achieve the above object, the present invention takes following design scheme：
A kind of roll-casting of magnesium alloy turns liquid system and device, as shown in Figure 1, including：Servo with lower end tapered bore turns liquid
Pump；Adaptive thermally expand turns liquid pipe；Case before liner and the independent heat preserving type combination of shell；With insulating layer, protection gas manhole appendix,
Level meter, temperature-detecting device；Pneumatic flowrate accurately controls blocking device；And liquid level and Cryocooler Temperature Closed Loop Control System
Deng.Specific invention process is as follows.
The servo with lower end tapered bore turns liquid pump, it is characterised in that：In order to after the completion of casting or unit occurs
When failure, magnesium liquid can be back to standing furnace in system, and avoid turning liquid pump lower end charging vestibule aneroid state alloy residual condensation collection
Knot, whole system device are connected in 15 ° of inclination angles with standing furnace and bast mouth, and will turn liquid pump charging chamber bottom and be designed as 160 ° of cones
Shape vestibule, as shown in Figure 2.The invention overcome turn liquid pump lower end charging vestibule be it is flat when, easily make residual liquid alloy condense
Assemble, it is difficult to clear up the defect that results in blockage and can not work.
The adaptive thermal expansion turns liquid pipe, it is characterised in that：During roll-casting of magnesium alloy turns liquid, entirely turn in liquid system
Temperature need to be maintained at 680~700 DEG C, and certain thermal expansion amount is necessarily will produce in system unit, and turn liquid system and smelting furnace
Be Hard link with casting and rolling machine, can not absorbing thermal expansion amount, thus system unit can be caused to deform, especially turn liquid pipe part appearance
Added with attemperator and insulating layer and yielding, there are potential magnesium liquids to reveal security risk in face.In this regard, the present invention designs
Adaptive thermal expansion turns liquid pipeline, that is, turning to install FlexbleJoint in the middle part of liquid pipe additional, absorbs whole system with this
Interior thermal expansion amount, as shown in Figure 3.
Case before the combined type, it is characterised in that：Preceding case is made of liner and shell two parts, liner and turns liquid pipe and confession
Expect mouth it is affixed to have SiC anti-oxidation and antisepsis coatings, shell for whole and inner surface be two halves formula, material is that high temperature resistant is stainless
Steel；Feed tip is circle with liner fixed connecting end, is rectangular with bast mouth connecting pin；Heating device and guarantor are furnished between liner and shell
Warm layer, as shown in Figure 4.Case designs before combined type, convenient for the clear of the dismounting of whole system, the repair and maintenance of heating device and liner
Reason.
The preceding case liquid level and system temperature accuracy-control system, it is characterised in that：Height between preceding case liquid level and bast mouth
Difference and aluminium alloy are delivered to temperature difference when bast mouth by standing furnace, are the key factors for determining Casting Rolled Sheet quality.The present invention adopts
Level meter linkage control before taking servo to turn liquid pump and the electronic caulked device being arranged in preceding case and be installed on case head cover
System, realizes accurately controlling for flow, the liquid surface height controlling precision ± 1mm before making in case；Meanwhile the present invention uses resistance heating
To turn liquid pipe and preceding case heating, and by standing furnace, turn liquid pipe, preceding case and heating component temperature linkage detection, closed-loop control, make magnesium
Liquid is delivered to preceding case by standing furnace, and magnesium liquid temperature change is no more than 10 DEG C.
By the invention process, a kind of safety of invention, economic roll-casting of magnesium alloy turn liquid system and device, it can be achieved that improving
Material quality, lumber recovery and the purpose for reducing cost of casting magnesium alloy board.
Advantage of the present invention and good effect.
1. case liquid level and system temperature before the present invention accurately controls effectively control Casting Rolled Sheet band and solidify uneven, easy shape
At mass defects such as segregation and severe edge fractures, lumber recovery and plate property are improved, to which production cost be greatly reduced, improve production
Benefit.
2. apparatus of the present invention, even if other devices break down, it can be achieved that magnesium liquid is lossless in system in casting line
Consumption is back to standing furnace, it is ensured that safety, it is lossless.
It is among a kind of advanced roll-casting of magnesium alloy unit 3. apparatus of the present invention are safe to use, easy to maintain, economic and reliable
Turn liquid device.
Description of the drawings
Fig. 1 is that roll-casting of magnesium alloy of the present invention turns liquid system apparatus arrangements schematic diagram.
Fig. 2 is that the servo with lower end tapered bore turns liquid pump structural schematic diagram in present system device.
Fig. 3 is adaptively to thermally expand to turn liquid pipe structural schematic diagram in present system device.
Fig. 4 is case before combined type in present system device.
Specific implementation mode
As shown in fig.1, first, opening the protection gas input channel 8 before being installed at case head cover 6 and switching, open simultaneously
The switch for turning 5 heating device 4 and 11 of liquid pipe 2 and preceding case, the conveyance conduit for being passed through protective gas and preceding case are preheated to 680~
700 DEG C, bast mouth and Casting Roller are preheated to set objective temperature.After preceding case system warm-up, the outlet pricker plug before keeping in case
Device 10 is in air-tight state, under a shielding gas, turns liquid pump 1 by the servo with lower end tapered bore, by refined, ventilation
Case 5 before the liquid magnesium alloy after slag, standing is transported to by turning liquid pipe road 2 is blown, described temperature connection during foregoing invention is passed through
Preceding the temperature inside the box detector 7 in dynamic control reads real time temperature and is kept after display liquid magnesium alloy temperature is setting cast temperature
Constant temperature；After Level meter 9 shows that liquid magnesium alloy reaches scheduled liquid level in current box, pricker plug device 10 is opened, magnesium
Aluminium alloy is realized via the launder channel 12 directly affixed with preceding case liner, bast mouth, casting and rolling machine stablizes casting.Stablizing casting
Cheng Zhong, turning the coordinated signals of liquid pump 1 and caulked device 10 by servo makes preceding case liquid level keep constant height, it is ensured that with uniform flow
Speed enters casting and rolling machine.It is all made of mixed gas (SF6+N2) in entire melting and conveying and liquid magnesium alloy strip casting process and carries out work
The gas shield of skill environment, flow system flow control must be with casting unit speeds match.
Claims (2)
1. a kind of roll-casting of magnesium alloy turns liquid system and device, including：The servo of lower end tapered bore turns liquid pump, adaptive thermally expand turns
Case and multi-functional head cover, preceding case liquid level and system temperature accuracy-control system before liquid pipe, combined type；The servo turns liquid pump charging
Chamber bottom is designed as 160 ° of tapered bores；Case is made of liner and shell two parts before the combined type, liner and turns liquid pipe
With feed tip it is affixed to have SiC anti-oxidation and antisepsis coatings, shell for whole and inner surface be two halves formula, material is high temperature resistant
Stainless steel；Feed tip and liner fixed connecting end are circle, be with bast mouth connecting pin it is rectangular, whole system device in 15 ° of inclination angles with it is quiet
Stove is set with bast mouth to be connected；Heating device and insulating layer are furnished between liner and shell；The multi-functional head cover is stainless by high temperature resistant
Steel and insulating layer composition, are equipped with protection gas intake valve, Level meter, temperature-detecting device, electronic caulked device；Before described
Case liquid level and system temperature accuracy-control system, the electronic caulked device in case and installation before taking servo to turn liquid pump and be arranged in
Level meter coordinated signals on preceding case head cover, realize accurately controlling for flow, the liquid surface height controlling essence before making in case
Degree ± 1mm；Meanwhile by standing furnace, turn liquid pipe, preceding case and heating component temperature linkage detection, closed-loop control, make magnesium liquid by standing
Stove is delivered to preceding case, and magnesium liquid temperature change is no more than 10 DEG C.
2. roll-casting of magnesium alloy according to claim 1 turns liquid system and device, it is characterised in that：Adaptive thermally expand turns
It installs a FlexbleJoint in the middle part of liquid pipe additional, eliminates the thermal expansion amount in whole system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073074.3A CN106493340B (en) | 2016-11-29 | 2016-11-29 | A kind of roll-casting of magnesium alloy turns liquid system and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073074.3A CN106493340B (en) | 2016-11-29 | 2016-11-29 | A kind of roll-casting of magnesium alloy turns liquid system and device |
Publications (2)
| Publication Number | Publication Date |
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| CN106493340A CN106493340A (en) | 2017-03-15 |
| CN106493340B true CN106493340B (en) | 2018-10-26 |
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| CN201611073074.3A Active CN106493340B (en) | 2016-11-29 | 2016-11-29 | A kind of roll-casting of magnesium alloy turns liquid system and device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106984781A (en) * | 2017-05-03 | 2017-07-28 | 太原科技大学 | A kind of new roll-casting of magnesium alloy machine |
| CN107116189B (en) * | 2017-06-26 | 2023-03-21 | 太原科技大学 | Magnesium alloy casting-rolling liquid supply system and alloy liquid level control method thereof |
| CN110394441B (en) * | 2019-06-26 | 2021-04-13 | 太原科技大学 | Gate type magnesium alloy casting and rolling machine front box flow control device |
Citations (6)
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|---|---|---|---|---|
| CN1456404A (en) * | 2003-01-29 | 2003-11-19 | 李华伦 | Magnesium alloy twin-roll continuous casting system for manufacturing magnesium alloy plate |
| CN1457943A (en) * | 2003-03-15 | 2003-11-26 | 边仁杰 | Molten steel negative pressure transport casting blank method and device |
| CN101612651A (en) * | 2009-07-10 | 2009-12-30 | 苏州有色金属研究院有限公司 | Front box device for roll-casting of magnesium alloy |
| CN101693933A (en) * | 2009-10-22 | 2010-04-14 | 中冶赛迪工程技术股份有限公司 | Ironmaking technical furnace top charging technology |
| CN103162055A (en) * | 2013-03-26 | 2013-06-19 | 江苏亚星波纹管有限公司 | Novel multifunctional ripple compensator |
| CN105855521A (en) * | 2014-05-09 | 2016-08-17 | 重庆硕龙科技有限公司 | Method and device for gravity casting of light alloy |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002951075A0 (en) * | 2002-08-29 | 2002-09-12 | Commonwealth Scientific And Industrial Research Organisation | Twin roll casting of magnesium and magnesium alloys |
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2016
- 2016-11-29 CN CN201611073074.3A patent/CN106493340B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1456404A (en) * | 2003-01-29 | 2003-11-19 | 李华伦 | Magnesium alloy twin-roll continuous casting system for manufacturing magnesium alloy plate |
| CN1457943A (en) * | 2003-03-15 | 2003-11-26 | 边仁杰 | Molten steel negative pressure transport casting blank method and device |
| CN101612651A (en) * | 2009-07-10 | 2009-12-30 | 苏州有色金属研究院有限公司 | Front box device for roll-casting of magnesium alloy |
| CN101693933A (en) * | 2009-10-22 | 2010-04-14 | 中冶赛迪工程技术股份有限公司 | Ironmaking technical furnace top charging technology |
| CN103162055A (en) * | 2013-03-26 | 2013-06-19 | 江苏亚星波纹管有限公司 | Novel multifunctional ripple compensator |
| CN105855521A (en) * | 2014-05-09 | 2016-08-17 | 重庆硕龙科技有限公司 | Method and device for gravity casting of light alloy |
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| CN106493340A (en) | 2017-03-15 |
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