CN202316976U - Device for straightening directional solidification liquid-solid interface - Google Patents
Device for straightening directional solidification liquid-solid interface Download PDFInfo
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- CN202316976U CN202316976U CN2011204149515U CN201120414951U CN202316976U CN 202316976 U CN202316976 U CN 202316976U CN 2011204149515 U CN2011204149515 U CN 2011204149515U CN 201120414951 U CN201120414951 U CN 201120414951U CN 202316976 U CN202316976 U CN 202316976U
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- directional solidification
- tie plate
- movable block
- fixed board
- pull bar
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Abstract
The utility model discloses a device for straightening directional solidification liquid-solid interface, which comprises at least four mutually-parallel and vertically-arranged guide rods. Two ends of each guide rod are respectively connected with an upper portion fixing plate and a bottom fixing plate. A moving block performs no-relative sliding along the axial direction of a pull rod, a screw rod parallel to the guide rods penetrates through the upper portion fixing plate and the bottom fixing plate and is connected with the moving block through a thread pair, and the tail portion of the bottom end of the screw rod is in rotating connection with the bottom fixing plate through a bearing. A head at the upper end of the screw rod is in fixed connection with a transmission spindle of a pull rod traction motor, mutually-parallel horizontal guide rails are respectively arranged under an upper fixing plate and a lower fixing plate, sliding wheels and corresponding horizontal guide rails form a sliding mechanism respectively, and the device is driven by a device horizontally-moving motor to perform horizontal translational motion. The device for straightening the directional solidification liquid-solid interface can enable the pull rod to achieve horizontal translational motion in the alloy directional solidification process while original downward pulling movement is performed, radial temperature gradient is eliminated, a curved liquid-solid interface is straightened, defects are decreased, and the efficiency is improved.
Description
Technical field
The utility model relates to a kind of pull device of directional solidification, is applicable to the regulation and control of crystal growth pattern, is used for directional solidification, belongs to technical field of metal material preparation.
Background technology
Directional solidification is in process of setting, to adopt compulsive means, in the frozen metal with do not set up the thermograde of specific direction in the solidified melt, thereby melt is solidified along the direction opposite with hot-fluid, to obtain to have the technology of specific orientation crystal.
The most outstanding contribution of directional solidification technique is to prepare the high temperature alloy foundry goods; Present nearly all advanced aero-engine is a characteristic to adopt single crystal blade all; Adopt directional solidification technique to produce and have good thermal shock resistance, long fatigue life, the thin-walled hollow turbo blade of creep resistance and middle temperature plasticity preferably; Thereby improve the thrust and the reliability of engine, and increase the service life.Directional solidification technique also is widely used at aspects such as preparation high-temperature superconductor material, functional material, composite and porous materials, and good development prospect is arranged.
But because design of alloy and control of process parameters problem; Number of drawbacks such as directional solidification castings possibly occur that freckle, low-angle boundary, subgrain, dendrite are dispersed, recrystal grain and shrinkage porosite; Reduce its yield rate, had a strong impact on its serviceability.Liquid-solid boundary crooked in the directional solidification process can be aggravated the formation of these defectives.When the freezing interface was protruding interface, foundry goods absorbed the side direction hot-fluid, and directed tissue is outwards dispersed, and the dried foundry goods geometric center degree that departs from of dendrite increases, and stray crystal forms probability and increases; When the interface is concavity, foundry goods will have the side direction hot-fluid to get rid of, and inwardly organize and shrink, and not only cause crystallographic axis to deflect, and cause that interdendritic free convection strengthens, and freckle forms probability and increases, the interdendritic shrinkage property enhancing at edge.Straight solid liquid interface can make the heat of alloy melt derive perpendicular to the interface from single direction, has reduced the formation of defective.
Thermograde and freezing rate are in dynamic variation in the directional solidification; Make liquid-solid boundary be difficult to keep flat shape, and the complex-shaped especially turbo blade of foundry goods, at the position of shape sudden change; More aggravated the formation at protruding or recessed interface, also become numerous defectives and produce part.For producing high-quality product satisfying the demand of modern industry, Recent study person has developed technology such as liquid metal cooling, area electron beam be molten and has improved thermograde and cooldown rate in the directional solidification, to eliminate these defectives.The device of existing control crystal growth pattern is complex structure mostly, and is wayward, and effect is also not ideal enough.
The utility model content
The purpose of the utility model is to overcome the not enough of prior art and a kind of device that makes directional solidification liquid-solid boundary straightened is provided; Under the situation that does not change original longitudinal temperature gradient and freezing rate; Guarantee that pull bar is in vertically drop-down; Also make the horizontal translation of whole pull device, straightened intensifying trend in freezing interface has reduced the formation of defective like this.
For reaching the foregoing invention purpose, the present invention adopts following technical proposals:
A kind of device that makes directional solidification liquid-solid boundary straightened; Comprise device support stand; Device support stand comprises the guide post that has four parallel to each other and vertical settings at least; The apical support of guide post also is fixedly connected a top tie plate, and the bottom of guide post is fixedly connected on a bottom fixed board, the setting parallel to each other of top tie plate and bottom fixed board.A movable block is installed on guide post, and movable block moves up and down along guide post, and the drop-down directional solidification pull bar that solidifies strand also laterally arranges with guide post; Top tie plate and movable block are passed in the bottom of directional solidification pull bar; The directional solidification pull bar is connected with movable block, and movable block slides along the axial nothing of directional solidification pull bar relatively, and promptly movable block moves down along guide post and promptly draws the drop-down ingot casting of directional solidification pull bar; A rhizoid bar parallel with guide post also passes top tie plate and movable block; Screw mandrel is connected through screw thread pair with movable block, and the bottom afterbody of screw mandrel is rotationally connected through spring bearing and bottom fixed board, and screw mandrel also is rotationally connected through another spring bearing and top tie plate; The upper end head of screw mandrel is fixedly connected with the transmission main shaft of pull bar traction electric machine, and the pull bar traction electric machine is fixed on the top tie plate.The below of top tie plate top and bottom fixed board is respectively equipped with horizontal guide rail parallel to each other; Top tie plate and bottom fixed board form slide mechanism with corresponding horizontal guide rail respectively through movable pulley, move horizontally motor-driven through device and make top tie plate and bottom fixed board carry out the level of synchronization translation with respect to horizontal guide rail.
Said apparatus moves horizontally motor and is fixed on the horizontal guide rail of below of bottom fixed board; The lower surface of bottom fixed board is provided with a tooth bar parallel with horizontal guide rail, and the transmission main shaft that device moves horizontally motor is fixedly connected a gear that is meshed with tooth bar.
Be fixedly linked through screw thread between the bottom of the pull bar of above-mentioned directional solidification and the movable block.
The said apparatus bracing frame preferably includes four guide posts.
Above-mentioned top tie plate and bottom fixed board preferred immobilization respectively are provided with four movable pulleies, and per two movable pulleies and same horizontal guide rail with matching form one group of slide mechanism unit.
Said apparatus moves horizontally motor and preferably adopts DC servo motor.
All above-mentioned spring bearings all preferably adopt no gap bearing.
Above-mentioned tooth bar preferably adopts the rectangle tooth bar.
Above-mentioned spring bearing preferably adopts cylinder roller bearing.
The utility model has following substantive distinguishing features and advantage compared with prior art:
1. the utility model makes the device of directional solidification liquid-solid boundary straightened device move horizontally motor to be fixed on the horizontal guide rail; On bottom fixed board, fix tooth bar; The gear of driven by motor and the mutual interlock of securing tooth bar; Just can realize the translation of bottom fixed board as long as regulated and control the rotation mode that device moves horizontally motor like this, thereby drive the horizontal translation of pull bar.
2. each fixes four movable pulleies to the utility model on top tie plate and bottom fixed board; These four movable pulley sizes and horizontal guide rail are complementary, and so not only movable pulley is along straight-line, in addition when realizing horizontal movement; Owing to all loaded onto movable pulley up and down; As long as under lubricating condition preferably, just can guarantee that the motion of lower clapboard is very steady, the uniformity of motion like this.
3. the utility model comprises two independent motor, opens the pull bar traction electric machine that is connected with screw mandrel, regulates its speed, just can drive the rotation of screw mandrel, and this moment, movable block will move down; Open and regulate the device that is fixed on the horizontal guide rail and move horizontally motor, whole pull device just can be realized horizontal translation, has realized independent operation between the two.
4. the utility model can independently be realized the horizontal translation of pull bar and vertically drop-down two actions, the flat boundaryization of liquid-solid boundary when making the directional solidification of alloy, and the minimizing defective makes sample under higher pulling rate, also can realize plane interface growth, has improved production efficiency.In addition, device is simple, and convenient disassembly is simple to operate.
Description of drawings
Fig. 1 is the apparatus structure sketch map that the utility model makes directional solidification liquid-solid boundary straightened.
Fig. 2 is the device lateral plan of Fig. 1.
The specific embodiment
The preferred embodiment accompanying drawings of the utility model is following:
Embodiment one:
Referring to Fig. 1 and Fig. 2; A kind of device that makes directional solidification liquid-solid boundary straightened; Comprise device support stand, device support stand comprises the guide post 5 that has four parallel to each other and vertical settings at least, and the apical support of guide post 5 also is fixedly connected a top tie plate 3; The bottom of guide post 5 is fixedly connected on a bottom fixed board 6, top tie plate 3 and bottom fixed board 6 settings parallel to each other.A movable block 4 is installed on guide post 5; Movable block 4 moves up and down along guide post 5; The directional solidification pull bar 1 of drop-down metal freezing strand also laterally arranges with guide post 5, and top tie plate 3 and movable block 4 are passed in the bottom of directional solidification pull bar 1, and directional solidification pull bar 1 is connected with movable block 4; Movable block 4 slides along the axial nothing of directional solidification pull bar 1 relatively; Be that movable block 4 moves down along guide post 5 and promptly draws directional solidification pull bar 1 drop-down ingot casting, also pass top tie plate 3 and movable block 4 with guide post 5 parallel rhizoid bars 11, screw mandrel 11 and movable block 4 are connected through screw thread pair; The bottom afterbody of screw mandrel 11 is through spring bearing 13 and bottom fixed board 6) be rotationally connected; Screw mandrel 11 also is rotationally connected with top tie plate 3 through another spring bearing 13, and the upper end head of screw mandrel 11 is fixedly connected with the transmission main shaft of pull bar traction electric machine 8, and pull bar traction electric machine 8 is fixed on the top tie plate 3.The below of top tie plate 3 tops and bottom fixed board 6 is respectively equipped with horizontal guide rail parallel to each other 9; Top tie plate 3 forms slide mechanism with corresponding horizontal guide rail 9 with bottom fixed board 6 respectively through movable pulley 2, moves horizontally motor 12 driving top tie plates 3 through device and carries out the level of synchronization translation with bottom fixed board 6 with respect to horizontal guide rail 9.In the present embodiment; Being installed in pull bar traction electric machine 8 on the top tie plate 3 will rotatablely move and be passed to leading screw 11; Directional solidification pull bar 1 is connected through screw thread 10 with movable block 4, and when descending with movable block 4, directional solidification pull bar 1 also can be with whole pull device horizontal movement.In order to obtain highly reliably, to move stably, adopted pull with pull bar traction electric machine 8 and leading screw 11 associated modes.This device can make in the directional solidification process original drop-down in the horizontal translation of realization; Horizontal translation drive strand through small scale vibrates along horizontal direction, makes the liquid phase and the solid phase at place, freezing interface be subjected to displacement friction, eliminates thermograde radially; Formation is along the single thermograde of casting flow path direction; Make and crooked liquid-solid boundary straightened reduce the formation of defective, raise the efficiency.
In the present embodiment; Said apparatus moves horizontally motor 12 and is fixed on the horizontal guide rail 9 of below of bottom fixed board 6; The lower surface of bottom fixed board 6 is provided with a tooth bar 7 parallel with horizontal guide rail 9, and the transmission main shaft that device moves horizontally motor 12 is fixedly connected a gear that is meshed with tooth bar 7.When carrying out directional solidification; The pull device of assembling directional solidification; Make whole pull device put horizontal guide rail 9,9 pairs of movable pulleies 2 of horizontal guide rail play guide effect, guarantee movable pulley 2 and the groove coupling of horizontal guide rail about in the of 9 above the dividing plate; A device in addition moves horizontally motor 12 and is fixed on the horizontal guide rail 9, and through gear be fixed on the tooth bar 7 mutual interlocks on the bottom fixed board 6.The pull bar 1 of directional solidification not only can be realized vertically drop-downly like this, and whole pull device can also horizontal translation.
In the present embodiment, be fixedly linked through screw thread 10 between the bottom of the pull bar 1 of above-mentioned directional solidification and the movable block 4.The screw threads for fastening connected mode is simple in structure, and is safe and reliable, is convenient to safeguard, makes things convenient for the replacing and the maintenance of directional solidification pull bar 1.
In the present embodiment, the said apparatus bracing frame comprises four guide posts 5.Adopt four guide posts 3 to form rectangular frame, simple in structure, easier for installation.
During assembling, at first with the device support stand horizontal fixed, directional solidification pull bar 1 is fastenedly connected through screw thread 10 with movable block 4, opens pull bar traction electric machine 8, regulates the speed of rotation and drives screw mandrel 11 rotations, and movable block 4 integral body move up and down.Horizontal positioned horizontal guide rail 9 is placed on whole device support stand on the horizontal guide rail 9, and guarantee to go up movable pulley on the bottom plate just in time on horizontal guide rail 9, and is as shown in Figure 2.Opening device moves horizontally motor 12; Regulate the mode of rotating; Through gear be fixed on tooth bar 7 interlocks on the bottom fixed board 6, thereby drive the translation to and fro of bottom fixed board 6 levels, so just can realize the vertical drop-down action in horizontal translation limit, directional solidification pull bar 1 limit.Thereby make radial temperature and the concentration homogenising that is coupled again, liquid-solid boundary levels off to planar interface, makes sample under higher pulling rate, also can realize plane interface growth, has improved production efficiency.
Embodiment two:
The technical scheme of present embodiment and embodiment one is basic identical, and difference is:
In the present embodiment, fixedly install four movable pulleies 2 respectively on top tie plate 3 and the bottom fixed board 6, per two movable pulleies 2 form one group of slide mechanism unit with same horizontal guide rail 9 with matching.The slide mechanism cellular construction is simple, can guarantee the requirement of whole device easy motion, and is convenient for installation and maintenance.
Embodiment three:
The technical scheme of present embodiment and embodiment one and embodiment two is basic identical, and difference is:
In the present embodiment, device moves horizontally the motor 12 preferred DC servo motors that adopt.The DC servo motor low cruise is more steady, under utmost point low speed, also can guarantee rotating speed and constant-torque output stably, and rotating speed control is accurate, and the direction of ability periodically-varied rotation.Make directional solidification pull bar 1 realization limit to the action that drop-down limit steadily moves horizontally, make the freezing interface straightened, make the control of crystal growth pattern gentlely more, reduce defective.Under carrying than weight body situation, the DC servo motor rotating speed also can suitably be regulated within the specific limits.
Embodiment four:
The technical scheme of present embodiment and previous embodiment is basic identical, and difference is:
In the present embodiment, the tooth bar 7 preferred rectangle tooth bars that adopt.The rectangle tooth bar also is fixed on the bottom fixed board, and is easy for installation, is convenient to safeguard.
Embodiment five:
The technical scheme of present embodiment and previous embodiment is basic identical, and difference is:
In the present embodiment, all spring bearings 13 are no gap bearing.What all rotary parts all adopted is no gap bearing, vibrations and error in the time of can reducing device work.
Embodiment six:
The technical scheme of present embodiment and previous embodiment is basic identical, and difference is:
In the present embodiment, spring bearing 13 all preferably adopts cylinder roller bearing.The bearing part that adopts when screw mandrel 11 is rotated is more easy to use and safeguard reduction equipment part cost.In the present embodiment, directional solidification pull bar 1 passes top tie plate 3 and moves downward with movable block 4; Screw mandrel 11 is through top tie plate 3 and pass movable block 4, is connected through screw thread 10 with movable block 4, and afterbody is fixed on bottom fixed board 6 through cylindrical roller spring bearing 13); Pull bar traction electric machine 8 is fixed on top tie plate 3 upper tops, drives screw mandrel 11 and rotates; Tooth bar 7 is fixed on the bottom fixed board 6, and moves horizontally the mutual interlock of gear that motor 12 is driven with the device that is fixed on horizontal guide rail 9 lower middle position.
Combine accompanying drawing that the utility model embodiment is illustrated above; But the utility model is not limited to the foregoing description; Can also make multiple variation according to the purpose that the utility model of the utility model is created; Change, the modification of making under all spirit and principles according to the utility model technical scheme, substitute, combination, simplify; All should be the substitute mode of equivalence,, all belong to the protection domain of the utility model as long as meet the structure and the aufbauprinciple of the device that makes directional solidification liquid-solid boundary straightened.
Claims (9)
1. device that makes directional solidification liquid-solid boundary straightened; Comprise device support stand; Said device support stand comprises the guide post (5) that has four parallel to each other and vertical settings at least; The apical support of said guide post (5) also is fixedly connected a top tie plate (3); The bottom of said guide post (5) is fixedly connected on a bottom fixed board (6); Said top tie plate (3) and bottom fixed board (6) setting parallel to each other; It is characterized in that: go up at said guide post (5) movable block (4) is installed; Said movable block (4) moves up and down along said guide post (5); The directional solidification pull bar (1) of drop-down metal freezing strand also laterally arranges with said guide post (5); Said top tie plate (3) and said movable block (4) are passed in the bottom of said directional solidification pull bar (1), and said directional solidification pull bar (1) is connected with said movable block (4), and said movable block (4) slides along the axial nothing of said directional solidification pull bar (1) relatively; To be said movable block (4) along said guide post (5) move down promptly draws the drop-down ingot casting of said directional solidification pull bar (1); A rhizoid bar (11) parallel with said guide post (5) also passes said top tie plate (3) and said movable block (4), and said screw mandrel (11) is connected through screw thread pair with said movable block (4), and the bottom afterbody of said screw mandrel (11) is rotationally connected through spring bearing (13) and said bottom fixed board (6); Said screw mandrel (11) also is rotationally connected through another spring bearing (13) and said top tie plate (3); The upper end head of said screw mandrel (11) is fixedly connected with the transmission main shaft of pull bar traction electric machine (8), and said pull bar traction electric machine (8) is fixed on the top tie plate (3), and the below of said top tie plate (3) top and bottom fixed board (6) is respectively equipped with horizontal guide rail parallel to each other (9); Said top tie plate (3) and bottom fixed board (6) form slide mechanism with corresponding said horizontal guide rail (9) respectively through movable pulley (2), move horizontally through device that motor (12) drives said top tie plate (3) and said bottom fixed board (6) carries out the level of synchronization translation with respect to horizontal guide rail (9).
2. the device that makes directional solidification liquid-solid boundary straightened according to claim 1; It is characterized in that: said device moves horizontally motor (12) and is fixed on the horizontal guide rail (9) of below of said bottom fixed board (6); The lower surface of said bottom fixed board (6) is provided with a tooth bar (7) parallel with said horizontal guide rail (9), and the transmission main shaft that said device moves horizontally motor (12) is fixedly connected a gear that is meshed with said tooth bar (7).
3. the device that makes directional solidification liquid-solid boundary straightened according to claim 2 is characterized in that: be fastenedly connected through screw thread (10) between the bottom of the pull bar of said directional solidification (1) and the said movable block (4).
4. according to any described device that makes directional solidification liquid-solid boundary straightened in the claim 1～3, it is characterized in that: said device support stand comprises four guide posts (5).
5. the device that makes directional solidification liquid-solid boundary straightened according to claim 4; It is characterized in that: fixedly install four said movable pulleies (2) respectively on said top tie plate (3) and the said bottom fixed board (6), per two said movable pulleies (2) and same horizontal guide rail with matching (9) form one group of slide mechanism unit.
6. the device that makes directional solidification liquid-solid boundary straightened according to claim 4 is characterized in that: it is DC servo motor that said device moves horizontally motor (12).
7. the device that makes directional solidification liquid-solid boundary straightened according to claim 2 is characterized in that: said tooth bar (7) is the rectangle tooth bar.
8. the device that makes directional solidification liquid-solid boundary straightened according to claim 4 is characterized in that: all said spring bearings (13) are no gap bearing.
9. the device that makes directional solidification liquid-solid boundary straightened according to claim 8 is characterized in that: said spring bearing (13) is a cylinder roller bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204149515U CN202316976U (en) | 2011-10-27 | 2011-10-27 | Device for straightening directional solidification liquid-solid interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204149515U CN202316976U (en) | 2011-10-27 | 2011-10-27 | Device for straightening directional solidification liquid-solid interface |
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| Publication Number | Publication Date |
|---|---|
| CN202316976U true CN202316976U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204149515U Expired - Fee Related CN202316976U (en) | 2011-10-27 | 2011-10-27 | Device for straightening directional solidification liquid-solid interface |
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| CN (1) | CN202316976U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882509A (en) * | 2012-12-19 | 2014-06-25 | 北京有色金属研究总院 | Electron beam zone melting furnace and method for carrying out float zone purification on material |
| CN108613574A (en) * | 2016-06-01 | 2018-10-02 | 罗金山 | A kind of industrial production heat sink |
| CN112355281A (en) * | 2020-11-12 | 2021-02-12 | 李守忠 | Rotary pull-down device for directional solidification of high-temperature alloy |
| CN113551131A (en) * | 2021-06-28 | 2021-10-26 | 黄春华 | Horizontal placing base |
-
2011
- 2011-10-27 CN CN2011204149515U patent/CN202316976U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103882509A (en) * | 2012-12-19 | 2014-06-25 | 北京有色金属研究总院 | Electron beam zone melting furnace and method for carrying out float zone purification on material |
| CN103882509B (en) * | 2012-12-19 | 2016-12-28 | 北京有色金属研究总院 | A kind of area electron beam smelting furnace that material is carried out suspension zone-refine and method |
| CN108613574A (en) * | 2016-06-01 | 2018-10-02 | 罗金山 | A kind of industrial production heat sink |
| CN112355281A (en) * | 2020-11-12 | 2021-02-12 | 李守忠 | Rotary pull-down device for directional solidification of high-temperature alloy |
| CN113551131A (en) * | 2021-06-28 | 2021-10-26 | 黄春华 | Horizontal placing base |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121027 |