CN101181719B - Oscillatory type double roll strip casting mill - Google Patents
Oscillatory type double roll strip casting mill Download PDFInfo
- Publication number
- CN101181719B CN101181719B CN2007101853779A CN200710185377A CN101181719B CN 101181719 B CN101181719 B CN 101181719B CN 2007101853779 A CN2007101853779 A CN 2007101853779A CN 200710185377 A CN200710185377 A CN 200710185377A CN 101181719 B CN101181719 B CN 101181719B
- Authority
- CN
- China
- Prior art keywords
- vibration
- casting
- vibration side
- shaft holder
- side shaft
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a vibration double-roll thin strip casting and rolling machine. The machine is characterized in that: a screw down mechanism (1) is connected with a non-vibration side bearing seat (3) provided with a non-vibration side casting and rolling roller (4), and the non-vibration side bearing seat (3) is arranged on a slide way (7) of a framework (2); a bearing (10) of a vibration side casting and rolling roller (9) is arranged in a vibration side bearing seat (10), the non-vibration side bearing seat (3) and the vibration side bearing seat (10) are horizontally placed on the framework (2), and a vibration device is arranged at the lower part of the vibration side bearing seat (10). A left pad (12) and the vibration bearing seat (10) are fixedly connected with each other by a fixing board through a bolt (15) and a bolt (16), and a right pad (14) and the framework (2) are fixedly connected with each other by a fixing board (18) through a bolt, while a linear moving roller bearing (13) is arranged between the left pad (12) and the right pad (14). The invention can change solidification mechanism, and the position of the solidification end point is lifted to form a solidification end surface, thus accelerating the speed of continuous casting. Meanwhile, the invention has functions of component homogenizing, eliminating internal cracking and segregation, which can greatly improve the quality of products. The machine can be used for molding and processing strip or slab of ferrous metals, nonferrous metals and composite materials.
Description
Technical field
The present invention relates to a kind of technical field of metallurgical machinery, particularly relate to a kind of oscillatory type double roll strip casting mill, belong to metallurgical industry abbreviated system metal sheet band production equipment, it becomes the strip material by the direct casting of high temperature fluent metal, is applicable to a kind of novel casting mode of production of strip metal processing.
Background technology:
At present, it is the crystallization roller that common casting and rolling machine directly adopts the casting roller, in the time of casting and rolling machine work, the synchronous rolling motion of two casting rollers, the position of solidifying the point of ending is on the plane of symmetry of solidification zone thickness of slab center, and the final zone of solidifying is long and narrow " V " shape band, solidifies the point of ending at cusp place, " V " shape bottom, very easily deposit various impurity in this zone, and produce defectives such as segregation, crackle, layering.Therefore, control freezing point position and to solidify region shape most important to reducing the casting defective.
Summary of the invention
In order to overcome defectives such as segregation that common casting and rolling machine exists, crackle, layering, the invention provides a kind of oscillatory type double roll strip casting mill, this invention employing vibration rolling casting technology is rubbed with the hands repeatedly and is rolled, therefore can smash the dendrite crystal grain thinning, change Mushy Zone boundary line shape, make and solidifying the some position of ending and be not fixed on the thickness of slab plane of symmetry, but change along a curved surface.
The technical scheme that technical solution problem of the present invention is adopted is: the screw-down of oscillatory type double roll strip casting mill is connected with the bearing block of non-vibration side casting roller, and is contained on the slideway of frame; The bearing of vibration side casting roller is installed among the vibration side shaft holder, and fixed head connects firmly left backing plate with bolt is in the same place with vibration side cast roll bearing chock; Vibrating device is installed in the bottom of described vibration side cast roll bearing chock, and described vibrating device is mechanical type vibrating device, fluid pressure type vibrating device or electromagnetic type vibrating device.During casting and rolling machine work, molten metal enters in the molten bath of two casting roll gaps by running gate system, when two casting rollers are done synchronous rolling motion, wherein vibrate side casting roller and not only do rolling motion but also do vibration up and down reciprocatingly, thereby realizing back and forth rubbing with the hands rolls by frequency of setting and amplitude.
The present invention passes through the cooling of casting roller, crystallization, solidifies, and rubs with the hands and rolls distribution and the molten metal weld pool solidifies region shape that has changed temperature field, casting district, makes on the end of a period freezing point position and moves, and liquid phase region shortens.Melting pool shape becomes the smooth surface shape by original long and narrow " V " shape near solidifying the point of ending.Because solidify on the position and move, solid phase area is elongated, can cause that roll-force increases.For realizing best casting-rolling technology system, should make as far as possible ends solidifies the position near outlet, and this just needs to improve roll casting speed, thereby realizes the high speed casting, has also reduced roll-force simultaneously.
The invention has the beneficial effects as follows: formed vibration is rubbed with the hands to roll and can be changed common double roller thin-belt casting rolling freezing mechanism, makes to solidify on the some position of ending to move, and changes the shape in solidification liquid cave, uniform alloying component, reduce segregation, crystal grain thinning, and can reduce product defectses such as crackle, layering.This casting mode also is of value to the raising roll casting speed in addition, thereby has improved product quality and production efficiency.This machine can be used for the shaping processing of ferrous metal, non-ferrous metal and composite band or sheet material.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of oscillatory type double roll strip casting mill;
Fig. 2 is the A-A cutaway view of oscillatory type double roll strip casting mill;
Fig. 3 is the partial enlarged drawing at oscillatory type double roll strip casting mill I position;
Fig. 4 is the structural representation of Electromagnetically vibrating double roll strip casting mill;
Fig. 5 is the structural representation of hydraulic vibration formula double roll strip casting mill;
Casting of Fig. 6 oscillatory type and common casting and rolling solidified entity schematic diagram.
In above-mentioned accompanying drawing, 1. screw-down, 2. frame, 3. non-vibration side shaft holder, 4. non-side casting roller, 5. strip product, the 6. molten bath of shaking, 7. slideway, 8. running gate system, 9. vibration side casting roller, 10. vibration side shaft holder, 11. bearings, 12. left backing plates, 13. the rectilinear motion roller bearing, 14. right backing plates, 15. bolts, 16. bolt, 17. fixed heads, 18. fixed heads, 19. bolt, 20. vibrating shafts, 21. connecting rods, 22. outer eccentric bushing, 23. rotating shafts, 24. interior eccentric bushings, 25. bolt, 26. armature, 27. springs, 28. the armature axle, 29. solenoids, 30 current regulators, 31. vibration type piston, 32. springs, 33. axles, 34. hydraulic oil, 35. hydraulic cylinders, 36. Hydrauservo Systems.
The operation principle of oscillatory type double roll strip casting mill: during casting and rolling machine work, molten metal enters 6 li in molten bath in the two casting roll gaps by running gate system 8, non-vibration side casting roller 4 and 9 liang of rollers of vibration side casting roller play cooling, rolling double action, vibrating device drives the vibration side shaft holder 10 that is contained on the vibration side casting roller 9 and does vibration up and down reciprocatingly, and described vibrating device is mechanical type vibrating device, fluid pressure type vibrating device or electromagnetic type vibrating device etc.Vibration side casting roller 9 is also done vibration up and down reciprocatingly thereupon like this, the molten metal in molten bath 6 crystallization and freezing and roll into thin plate under the effect of vibration side casting roller 9.
The specific embodiment
Fig. 1 is a mechanical-vibration type double roll strip casting mill disclosed by the invention.One end of connecting rod 21 is sleeved on the vibrating shaft 20, and its other end is sleeved on the turning cylinder 23, and vibrating shaft 20 is installed in the bottom (see figure 2) of vibration side shaft holder 10.Suit crank device on the turning cylinder 23, described crank device is made up of outer eccentric bushing 22 that is nested together and interior eccentric bushing 24, and the both has offset, is fixed together by screw 25 after rotating an angle relatively, forms the different crank device of offset.
The interior ring of bearing 11 is equipped with vibration side casting roller 9, and bearing 11 is installed in the vibration side shaft holder 10.Non-vibration side casting roller 4 is installed in the non-vibration side shaft holder 3, and non-vibration side shaft holder 3 is installed on the slideway 7 of frame 2, and screw-down 1 is connected with non-vibration side shaft holder 3, is used for regulating roll gap.
Fixed head 17 is fixed together left backing plate 12 and vibration side shaft holder 10 by bolt 15 and bolt 16, and fixed head 18 is fixed together right backing plate 14 and frame 2 by bolt 19, and fixed head 18 and right backing plate 14 weld together.The dovetail groove mechanism that left side backing plate 12 and right backing plate 14 are equipped with rectilinear motion roller bearing 13 (see figure 3)s between the two and retrain mutually.When left backing plate 14 during with vibration side shaft holder 10 up-down vibration, and right backing plate 14 maintains static, the roll-force of vibration side casting roller 9 is pressed on the rectilinear motion roller bearing 13 by left backing plate 12 like this, rectilinear motion roller bearing 13 also with left backing plate 12 scroll-up/down, has reduced friction so effectively.In the time of casting and rolling machine work, when vibrating device drives 10 vibrations of vibration side shaft holder, also will drive the vibration side casting roller 9 that is contained in 10 li of vibration side shaft holders simultaneously and do vibration up and down reciprocatingly together, the frequency of vibration and amplitude can be set by vibrating device.
(see figure 6) when common casting and rolling machine is worked, the liquid cave of solidifying is a V-arrangement, the position of end of a period freezing point is very low, the defective of such solidification mode is that the Temperature Distribution cloud atlas is by distributing from level to level, temperature progressively reduces from inside to outside, and the thin plate central temperature is the highest, and such Temperature Distribution causes layering easily, and then generation crackle, and the appearance defective relevant with Temperature Distribution." V " shape bottom, the freezing point that promptly ends is during the fluctuation that occurs sometimes offseting downward, the liquid metal that does not solidify is fully also contained at the center of thin plate, is just made roll gap by the casting rolling, and the phenomenon of the rolled plate heart of molten metal very easily takes place this situation, promptly " roll leakage " and take place, casting is interrupted.The molten matter of various impurity and infusibility accumulates in the center easily, can cause segregation phenomena, and among the figure, common casting and rolling machine end of a period freezing point is that solid phase area length is L1 to the position length of two roller center lines.
The oscillatory type casting and rolling machine is because the vibration that vibration side casting roller 9 does not stop up and down, liquid, solid two-phase section are vibrated side casting roller and ceaselessly rub with the hands, rub, liquid phase region and two-phase section stir mutually and lump together, and the tip portion of V-arrangement bottom disappears, and becomes a smoother as shown in Figure 6 curve.Roll through this stranding, changed the freezing mechanism in casting and rolling solidified entity zone, Temperature Distribution form is originally broken, and it is more even that Temperature Distribution becomes, and can effectively reduce the number of drawbacks that is caused by temperature distributing disproportionation, as layering, implosion etc.If vibration casting and rolling machine end of a period freezing point is that solid phase area length is L2 to the position length of two roller center lines, compare with the solid phase area length of common casting and rolling machine, can find, common casting and rolling machine and oscillatory type casting and rolling machine are with same roll casting speed work, L1 is greater than the length of L2, because the rising of vibration casting and rolling machine end of a period freezing point, the most advanced and sophisticated liquid part of V-arrangement, filled by coagulum or half coagulum from other position, molten bath, casting rolling system solid phase area and Mushy Zone increase, casting moment like this and roll-force will increase, this is to the work of casting and rolling machine, be not an optimum process operation, the mode with the speed that increases oscillatory type casting and rolling machine casting thin plate reduces casting moment and casting-rolling force, like this, can make the position of end of a period freezing point of vibration casting and rolling machine can be reduced to the position of the freezing point of common casting and rolling machine, on certain degree, the mode of production of the casting roller of vibration can effectively improve roll casting speed.
In addition, 9 vibrations constantly of vibration side casting roller, can stir molten metal and two-phase section, each composition of alloy is evenly distributed, can reduce gross segregation and microsegregation effectively, various impurity no longer collect in the bottom of V-arrangement, but uniform at the smoothed curve face, and this has positive effect to the performance that improves plate.Simultaneously because the effect of rolling is rubbed in vibration with the hands, smashed secondary dendrite, the dendrite of smashing can form a new nucleus again, thick column equiax crystal is transformed to tiny equiax crystal, make crystal grain obtain refinement, can replace grain refiner, prevent secondary pollution, vibration constantly change nucleus in the growth course position to, crystalline orientation is disperseed, obtain grain density than higher made-up belt tissue.
The oscillatory type casting and rolling machine is produced the casting-rolling technology flow process of stainless steel strip:
1. smelting
Raw material and various alloy material that needs are smelted drop in the smelting furnace according to pre-designed ratio, start the power supply melting, after furnace charge reaches whole fusings and after meeting the requirements of temperature, carry out slag making, and the feeding argon gas is protected preparation tapping then.The stainless molten steel tapping temperature is generally 1620-1660 ℃, and the beginning pouring temperature is controlled at 1470 ℃.
2. the preparation of tundish and preheating
Have liner in the tundish, and coat fireproof coating, guarantee tundish the inside cleaning,, influence steel quality in case there is impurity to enter molten steel.To make the mouth of a river centering during casting, also will toast simultaneously, make its temperature reach 800-1000 ℃ tundish.
3. the preheating of sprue gate and installation
Sprue gate is put into heating furnace and is heated, and be preheating to about 1100-1200 ℃, when reaching desired temperature, takes out and is installed in the corresponding position of casting and rolling machine, prepares to carry out casting.
4. cooling water control
Casting roller hull-skin temperature is cooled off by portion's cooling water in the roller core, and the cooling water leaving water temperature is 35 ℃, and cooling water pressure is 0.2Mpa, is 0.5Mpa to the maximum.
5. roll gap is regulated
Before casting begins, by spring the roll gap width is pressed onto zero earlier, roll gap is strutted, when solidified shell is increased to adequate thickness,, guarantee the consistency of thickness of Cast Strip longitudinally by the maximum opening degree of housing screw restriction roll gap by solidified shell.
After casting begins, open the power supply and the recirculated cooling water of oscillatory type casting and rolling machine, wouldn't open vibrating device.Molten steel enters 6 li in molten bath between the two rotation casting roller gaps through the mouth of a river, and on casting roller surface, form one deck solidified shell, the thickness of solidified shell increases gradually, when solidified shell is increased to adequate thickness, just be involved between the roll gap by two rotating casting rollers, thickness with solidified shell increases gradually, and roll gap is solidified shell and squeezes greatly, until maximum opening degree.
When strip 5 that oscillatory type casting function stably produces, open vibrating device, vibration frequency can be made as 10～30 hertz earlier, the 9 just vibrations up and down reciprocatingly under the drive of vibrating device of vibration side casting roller, and and non-vibration side casting roller 4 together, do rolling motion, roll thereby form to rub with the hands.If want to change vibration amplitude, the oscillatory type casting and rolling machine can be stopped, unclamp the outer eccentric bushing 22 and the interior eccentric bushing 24 that are fixed together, rotate corresponding angle relatively, be fixed together again.If want to change vibration frequency, the casting and rolling machine that needn't stop, directly regulating motor (vibrating device is by this motor-driven) provides the frequency converter of power supply to get final product.
As shown in Figure 4, the Electromagnetically vibrating vibrating device is mainly by armature 26, spring 27, armature axle 28, and solenoid 29, current regulator 30 is formed.Armature axle 28 restricted springs 27 also are fixed together armature 26 and vibration side shaft holder 10, the size and Orientation of current regulator 30 control electric currents and frequency etc., when aliving in the coil, electromagnet produces electromagnetic force, attract vibration side shaft holder 10 and subsidiary parts thereof to move downward, when current vanishes, electromagnetic force also disappears, vibration side shaft holder 10 moves up to original position under the effect of spring 27, so just finished the process of a vibration.The amplitude of armature 26 and frequency are by current regulator 30 controls.
Hydraulic vibration device mainly is made up of vibration type piston 31, spring 32, axle 33, hydraulic oil 34, hydraulic cylinder 35, Hydrauservo System 36.Axle 33 will vibrate side shaft holder 10 and vibration type piston 31 is fixed together, and hydraulic cylinder 35 is fixed on the frame 2, and hydraulic oil 34 is by Hydrauservo System 36 controls, and the vibration frequency of vibration type piston 28 and amplitude are controlled by Hydrauservo System 32.
During this system works, servo-drive system 36 makes hydraulic oil 34 flow to hydraulic cylinder 35, hydraulic oil 34 is in high pressure conditions, vibration type piston 31 is under the pressure of hydraulic oil 34, driving vibration side shaft holder 10 moves upward, when vibration type piston is transported to certain position, servo-drive system 36 makes hydraulic oil 34 flow out hydraulic cylinder 35, hydraulic oil 34 is under the low-pressure state, vibration side shaft holder 10 is under the spring force effect of self gravitation and spring 29, move downward, and get back to original position, hydraulic vibration device has just been finished a vibration processes like this.
Claims (5)
1. oscillatory type double roll strip casting mill, comprise screw-down (1), frame (2), non-vibration side shaft holder (3), non-vibration side casting roller (4), molten bath (6), slideway (7) and casting system (8), non-vibration side casting roller (4) and vibration side casting roller (9) inside are connected with cooling circulating water, it is characterized in that: screw-down (1) is connected with the non-vibration side shaft holder (3) that non-vibration side casting roller (4) is housed, the bearing (11) of vibration side casting roller (9) is installed among the vibration side shaft holder (10), and vibrating device is installed in the bottom of vibration side shaft holder (10); Non-vibration side shaft holder (3) and vibration side shaft holder (10) are horizontal positioned on frame (2), non-vibration side shaft holder (3) is contained on the slideway (7) of frame (2); Fixed head (17) is by two bolts (15,16) left backing plate (12) and vibration side shaft holder (10) are connected firmly, another fixed head (18) connects firmly right backing plate (14) and frame (2) with a bolt (19), and rectilinear motion roller bearing (13) is installed between left backing plate (12) and the right backing plate (14).
2. oscillatory type double roll strip casting mill according to claim 1 is characterized in that: described vibrating device is mechanical type vibrating device, fluid pressure type vibrating device or electromagnetic type vibrating device; The amplitude of vibrating device is 0.1～10mm, 1～200 hertz of frequency.
3. oscillatory type double roll strip casting mill according to claim 2, it is characterized in that: described mechanical type vibrating device is the crank block device, the outer eccentric bushing (22) of crank block device and interior eccentric bushing (24) are sleeved on the rotating shaft (23), and outer eccentric bushing (22) and interior eccentric bushing (24) all have offset; One side of connecting rod (21) is enclosed within on the crank block device, and opposite side is connected with vibrating shaft (20), and described vibrating shaft (20) is installed in the bottom of vibration side shaft holder (10).
4. oscillatory type double roll strip casting mill according to claim 2, it is characterized in that: described electromagnetic type vibrating device is made up of armature (26), spring (27), armature axle (28) and solenoid (29) and current regulator (30), armature (26) connects firmly with vibration side shaft holder (10), and the electric current of solenoid (29) is regulated by current regulator (30).
5. oscillatory type double roll strip casting mill according to claim 2, it is characterized in that: described fluid pressure type vibrating device is made up of vibration type piston (31), hydraulic cylinder (35) and Hydrauservo System (36), axle (33) will vibrate side shaft holder (10) and vibration type piston (31) is fixed together, hydraulic cylinder (35) is fixed on the frame (2), and the vibration frequency of vibration type piston (31) and amplitude are controlled by Hydrauservo System (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101853779A CN101181719B (en) | 2007-12-07 | 2007-12-07 | Oscillatory type double roll strip casting mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101853779A CN101181719B (en) | 2007-12-07 | 2007-12-07 | Oscillatory type double roll strip casting mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101181719A CN101181719A (en) | 2008-05-21 |
| CN101181719B true CN101181719B (en) | 2010-08-11 |
Family
ID=39447222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101853779A Expired - Fee Related CN101181719B (en) | 2007-12-07 | 2007-12-07 | Oscillatory type double roll strip casting mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101181719B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002688A (en) * | 2015-07-29 | 2015-10-28 | 安徽丹凤电子材料股份有限公司 | Gas stove adjusting device |
| CN107138529B (en) * | 2017-06-30 | 2020-01-07 | 燕山大学 | Solid-liquid vibration casting-rolling equipment and method for bimetal composite plate strip |
| CN108144966B (en) * | 2018-02-10 | 2019-09-06 | 太原理工大学 | A kind of electric and magnetic oscillation roll of rolled metal composite plate |
| CN113426967A (en) * | 2021-06-11 | 2021-09-24 | 一重集团大连工程技术有限公司 | Device and method for controlling solidification by adopting vibration |
| CN115625207B (en) * | 2022-10-31 | 2024-03-19 | 华中科技大学 | Isothermal vibration auxiliary rolling device for preparing TiAl alloy plate and rolling method thereof |
-
2007
- 2007-12-07 CN CN2007101853779A patent/CN101181719B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101181719A (en) | 2008-05-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101239358B (en) | Double-roller casting rolling-hot continuous rolling method and equipment | |
| US5634510A (en) | Integrated manufacturing system | |
| Ge et al. | Progress in strip casting technologies for steel; technical developments | |
| CN101181719B (en) | Oscillatory type double roll strip casting mill | |
| CN105026073A (en) | Casting equipment and casting method using same | |
| CN108838207A (en) | Metal casting method for tandem rolling and equipment | |
| CN101811179A (en) | Magnesium alloy wide plate casting-rolling method | |
| Ji et al. | A review of the twin-roll casting process for complex section products | |
| CN111036870A (en) | Slab casting and rolling device with corner heating capacity and method | |
| JPH0241742A (en) | Twin roll type strip continuous casting method | |
| CN113426970B (en) | Vertical semi-continuous production device and production process of large round billets with phi of 1000 mm-2000 mm | |
| CN101362150B (en) | Double-roller casting rolling mill capable of arbitrarily adjusting roll gap | |
| CN110000344A (en) | A kind of device and method for continuously preparing semi solid slurry inhibiting ZCuSn10P1 alloy tin element segregation | |
| CN102397876A (en) | Continuous hot rolling mill for magnesium alloy sheet | |
| JPH09508070A (en) | Thin slab manufacturing method and continuous casting apparatus | |
| CN110722120A (en) | Continuous casting vibration supporting roller with eccentric rotating piece and equipment thereof | |
| CN203044831U (en) | Novel high-strength water-cooling crystallizer | |
| CN201586733U (en) | Large cross-section blank casting machine | |
| JPS61186150A (en) | Casting method by suspension in electromagnetic field | |
| CN210908017U (en) | Electromagnetic multi-cyclone stirring casting device | |
| JPH09509615A (en) | Method for manufacturing rectangular thin slab and continuous casting apparatus | |
| US20030015309A1 (en) | Apparatus and method for metal strip casting | |
| CN110681836A (en) | Electromagnetic multi-cyclone stirring casting device | |
| CN107008884B (en) | Cooling mold and method for cooling steel ingot | |
| CN211614251U (en) | Slab casting and rolling device with corner heating capacity |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20181207 |