CN105149556A - Solid-liquid composite cast rolling machine for dual-metal-layer composite pipe - Google Patents
Solid-liquid composite cast rolling machine for dual-metal-layer composite pipe Download PDFInfo
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- CN105149556A CN105149556A CN201510480916.6A CN201510480916A CN105149556A CN 105149556 A CN105149556 A CN 105149556A CN 201510480916 A CN201510480916 A CN 201510480916A CN 105149556 A CN105149556 A CN 105149556A
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Abstract
The invention provides a solid-liquid composite cast rolling machine for a dual-metal-layer composite pipe. The machine comprises a machine frame, a pouring unit used for aluminum liquid pouring, a pressing-down and balance adjusting device and a cast roller unit, and further comprises an annular flow distribution device and a guide support. The annular flow distribution device is covered with a heating device used for keeping metal liquid in a molten state. The cast roller unit comprises a first cast roller and a second cast roller which jointly form a circular hole, and a pipe base material to be composited enters the circular hole. The solid-liquid cast rolling forming technology is adopted for producing the dual-metal-layer composite pipe, and metallurgical bonding of dual metal interfaces can be achieved by combining the rapid solidification technology with the rolling technology. Compared with the prior art, cladding metal is poured in a liquid state, the problem that the requirements of traditional solid-solid composite technologies such as drawing composite, expanded connection composite and spinning composite for blank size and shape precision are high is solved, and the solid-liquid composite cast rolling machine has the beneficial effects of remarkably saving energy, being high in efficiency and short in process, and the like.
Description
Technical field
The present invention relates to bimetallic stratiform field of compound material, be specifically related to a kind of production equipment of bimetallic stratiform multiple tube.
Background technology
Composite bimetal pipe is made up of internal layer and outer two kinds of different metal pipe materials, has the 26S Proteasome Structure and Function material of rigidity, intensity and the combination property such as anti-corrosion, wear-resisting concurrently.Formed by various distortion and interconnection technique between tube layer and combine closely, during by External Force Acting, inside and outside tubing is out of shape simultaneously and interface is not separated.In recent years, along with the develop rapidly of national economy, the pipe transportation technology of China to petrochemical industry, ocean development, nuclear energy uses is had higher requirement, and traditional single metal pipe material is difficult to adapt to complicated and extreme environment service condition.The composite bimetal pipe that the coating of the basic unit and environment resistant dielectric corrosion or antiwear property at present with higher-strength and rigidity is formed substitutes traditional high-alloy seamless steel pipe in beginning, be widely used in the industries such as oil, chemical industry, electric power, ocean engineering, the demand of the strong corrosive environment such as oil gas field, ocean platform to composite bimetal pipe sharply rises, make the development and application of composite bimetal pipe receive extensive concern, its efficient forming technique researches and develops with equipment the forward position focus becoming industry.
For solving composite bimetal pipe shaping preparation problem, Chinese scholars and industry specialists successively propose drawing compound, roll extrusion compound, expanded joint compound, spinning compound, Explosion composite, built-up welding compound, centrifugal casting compound and method hot rolling etc., have made significant contribution to the development and progress promoting industry.Utilize solid-liquid combination process to produce composite bimetal pipe and adopt liquid pouring due to coating metal, solve the tradition such as drawing compound, expanded joint compound solid-solid phase combination process is to billet size and the problem such as form accuracy requirement is high, utilize high-temperature liquid-phase and draught pressure simultaneously, realize the compound of base material and coating, higher bond strength can be obtained.Current solid-liquid composite technology is only shown in the production being applied to ply-metal band, not yet on composite bimetal pipe production field, has breakthrough research, as urgently to be resolved hurrily in many technical problems such as flow distribution device, equipment scheme designs.
Summary of the invention
The invention provides a kind of production equipment of bimetallic stratiform multiple tube, solve the integration of equipments technical problems such as pass layout, flow distribution device, complicated pass side seal and the guiding mechanism utilizing solid-liquid composite technology to carry out existing in composite bimetal pipe production.
Particularly, a kind of bimetallic stratiform multiple tube solid-liquid composite casting milling train, it comprise frame, pressure adjusting device, for pouring into cast unit and the Casting Roller unit of molten metal, also comprise be arranged in annular current distribution device above Casting Roller unit, the heater that is coated on annular current distribution device outside, be arranged on annular current distribution device top for guiding and keeping one through the tubing guiding trestle of the pipe base material to be composite of annular current distribution device;
Described Casting Roller unit comprises and being arranged in juxtaposition in the horizontal direction and the first Casting Roller of adjoining each other of roll surface and the second Casting Roller, the roll surface of the first Casting Roller and the second Casting Roller offers circumferential cannelure, the cross section of described circumferential cannelure is semicircle, the described circumferential cannelure of described first Casting Roller and the second Casting Roller forms round pass at adjoining position, described round pass is passed wherein for described pipe base material to be composite, and the diameter of described round pass is set to the diameter being greater than pipe base material to be composite;
The exocoel that described annular current distribution device comprises fairlead, outer wall and is arranged between described fairlead and described outer wall, described fairlead passes for pipe base material to be composite, described exocoel and described cast unit fluid communication, pass through for molten metal liquid, pipe base material to be composite and molten metal liquid converge in the exit of described annular current distribution device and jointly enter the round pass of Casting Roller unit, and rolling casting bonding is shaped wherein.
Preferably, described cast unit comprises front case, cover plate, column, gripper shoe, profiling side seal mould and mold frame, described profiling side seal mould is inserted in described mold frame, described cover plate and described mold frame are by Stud connection, and described profiling side seal mould and mold frame outer arcuate section are that tangency location arranges and forms Casting Roller unit side seal district with the outer surface of the first Casting Roller and the second Casting Roller respectively.
Preferably, the material of described profiling side seal mould is alumina silica refractory.
Preferably, the variable cross-section hole that described profiling side seal mold center offers counter sink and the bellmouth that is connected with described counter sink and cylindrical hole are formed.
Preferably, the inside of described front case is provided with inclination drainage plate, and cloth head piece is offered in the bottom of described front case, and the external stability of described fairlead has choker bar to form the entrance of annular current distribution device.
Preferably, the outer wall of described annular current distribution device is made up of dissection type outer shroud, the lower end of described outer shroud is stairstepping, can be positioned in the counter sink of described profiling side seal mould, described fairlead coordinate with the bell of described profiling side seal mould form annular current distribution device go out head piece.
Preferably, the inside of described annular current distribution device adopts stagewise cloth stream mode, it comprises first order branching block, second level branching block and third level branching block, and described first order branching block, second level branching block and third level branching block set gradually vertically and be evenly fixed on the outside of described fairlead.
Preferably, described guiding trestle comprises flipper guide, riser, tubing locating rack and adjustable ring, and described flipper guide has chute, and described riser is provided with boss, and the upper surface of described boss and described flipper guide forms the horizontal guide rail of wedge jointly.
Preferably, described tubing locating rack has fixing hole and spring fixed bar connecting hole, described adjustable ring is placed in a sleeve, and can be adapted to the multiple tube base material of different-diameter specification by the size changing adjustable ring, the lower end of described tubing locating rack is provided with balancing spring.
Preferably, described frame is horizontal framework, upper rack is provided with the elevation and subsidence regulating device for regulating annular current distribution device height, described elevation and subsidence regulating device comprises adjustment handwheel, split bearing seat, screw mandrel, crossbeam and wedge, fit in the lifting inclined-plane of described wedge and mold frame, common formation lifting unit, the horizontal guide rail that on the flipper guide that wedge is arranged in guiding trestle, supporting plane and riser boss are formed, described adjustment handwheel relies on flat key to be connected with screw mandrel, screw mandrel end relies on screw thread to be connected with crossbeam, rotating adjustment handwheel drives screw mandrel to rotate, and then drive crossbeam and wedge to move along horizontal guide rail, promotion mold frame moves up and down, realize the lift adjustment of annular current distribution device height.
Advantage of the present invention is as described below:
1, solid-liquid casting forming technology is adopted to produce bimetallic stratiform multiple tube, flash set technology is combined with rolling technique, bimetallic metallurgical compound can be realized, compared to traditional processing technology, coating metal adopts liquid pouring, solve the tradition such as drawing compound, expanded joint compound, spinning compound solid-solid phase combination process to billet size and the problem such as form accuracy requirement is high, there is the advantages such as significantly energy-conservation, high efficiency, flow process are short.
2, in the roll casting zone second half section, solid phase coating metal is around being coated on substrate metal tube-surface, define typical bimetal tube method hot rolling process, the high temperature large deformation that closed type rolling is formed not only contributes to obtaining the good metallurgical binding effect in interface, is also conducive to the Microstructure Performance improving coating metal material.
3, rely on rotation adjustment handwheel, utilize screw mandrel to rotarily drive crossbeam and move horizontally, and then the oscilaltion action of the wedge mechanism realized, control the height of cast unit, this regulative mode can realize on-line control, easy and simple to handle, labour intensity is low, saves a large amount of manpower and materials.
4, front case built-in skew guide plate can make molten metal liquid arrive current distribution device entrance fast, effectively reduces the thermal loss of molten metal; Annular current distribution device inside adopts three grades of even distribution type shunting modes, casting of molten metal can be made evenly to flow out ringwise around inner layer metal pipe, be coated in pipe substrate surface to be composite, greatly improve pouring metal melt efficiency, ensure that the stability of bath surface.Profiling side seal mould is installed in mold frame, and the closing in of its embedded with conical jointly forms metal liquid stream with annular current distribution device and exports, and outer arcuate section coordinates with Casting Roller is tangent, molten metal effectively can be prevented to both sides side leakage, play side seal effect, guarantee the security of work.
5, guide effect is played in the lifting of the chute on flipper guide to cast unit, ensure that cast unit vertical lift; Tubing locating rack can realize inner layer metal pipe quick centring, is convenient to feeding Casting Roller pass, may be limited in rolling casting bonding process that core pipe end that is that cause swings because being out of shape uneven simultaneously.By regulating the size of adjustment ring, the change of inner layer metal pipe diameter can be adapted to, produce different size multiple tube.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention;
Fig. 2 is overall sectional view of the present invention;
Fig. 3 is Casting Roller unit of the present invention;
Fig. 4 is elevation and subsidence regulating device in the present invention, cast unit and guiding trestle position relationship schematic diagram;
Fig. 5 is elevation and subsidence regulating device structural representation in the present invention;
Fig. 6 pours into a mould cellular construction schematic diagram in the present invention;
Fig. 7 is annular current distribution device structural representation in the present invention;
Fig. 8 is branching block structural representation in the present invention;
Fig. 9 is mold frame structural representation in the present invention;
Figure 10 is profiling side seal mould and pillar construction schematic diagram in the present invention;
Figure 11 is guiding support structure schematic diagram in the present invention;
Figure 12 is tubing locating rack structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and the specific embodiments, structure and working principle of the present invention is further explained:
As shown in Figures 1 and 2, the invention provides a kind of bimetallic stratiform multiple tube solid-liquid composite casting milling train, it comprises horizontal framework 1, elevation and subsidence regulating device 2, cast unit 3, metal pipe material to be composite 4, guiding trestle 5, the Casting Roller unit 6 being with pass and pressure adjusting device 7.
Pressure adjusting device 7 comprises rotation hand wheel 701, gear 702, briquetting 703 and last item 704, and rotation hand wheel 701, gear 702, briquetting 703 and last item 704, connect successively.
As shown in Figure 3, Casting Roller unit 6 comprises the first Casting Roller 61 and the second Casting Roller 62, first Casting Roller 61 and the second Casting Roller 62 and circumferentially goes up and all offer semicircle hole slot, in horizontal alignment arranged in form, common formation round pass 63, pipe base material to be composite is entered by round pass 63.
As shown in Figure 5, elevation and subsidence regulating device 2 comprises adjustment handwheel 201, Split bearing pedestal 202, screw mandrel 203, crossbeam 204 and wedge 205.Adjustment handwheel 201 relies on flat key to be connected with screw mandrel 203, and screw mandrel 203 relies on screw thread to be connected with crossbeam 204, and crossbeam two ends are parallel is provided with wedge 205.Split bearing pedestal 202 is fixed on above frame 1, thus elevation and subsidence regulating device 2 entirety is fixed on above horizontal framework 1.
As shown in Figure 6, cast unit 3 comprises front case 301, fairlead 302, annular current distribution device body 303, on-line heating device 304, cover plate 305, profiling side seal mould 306, mold frame 307, column 308 and gripper shoe 309, and gripper shoe 309 is fixed on column 308.Front case 301 base plate, fairlead 302 entrance flat board and gripper shoe 309 all have circular hole, and Figure 10 shows the circular hole 3091 that gripper shoe 309 is offered, and rely on bolt to realize connecting between three.Column 308 lower end is provided with straight pin 3081, is connected with the pin-and-hole 3071 in mold frame, and profiling side seal mould 306 is inserted in mold frame 307, and in relying on, hexagonal countersunk head stud realizes the connection of cover plate 305 and mold frame 307.
As shown in Figure 7 to 9, front case 301 inside is provided with inclination drainage plate 3011, cloth head piece 3012 is offered in bottom, choker bar 3033 and fairlead 302 form current distribution device entrance, cloth head piece 3012 is connected with the entrance of annular current distribution device 303, and annular current distribution device 303 outer wall is made up of dissection type outer shroud 3031 and 3032, and outer shroud lower end is stairstepping, can be positioned in the counter sink 3061 of profiling side seal mould 306, fairlead 302 coordinates with profiling side seal mould bell 3062 and forms out head piece; On-line heating device 304 is cylindrical, is arranged on the outside of annular current distribution device 303, arranges, realize the preheating to annular current distribution device 303 and online concurrent heating, to ensure that molten metal remains on molten state in integral coating shape.Annular current distribution device 303 inside adopts stagewise cloth stream mode, the outside of fairlead 302 is evenly arranged in by first order branching block 3034, second level branching block 3035 and third level branching block 3036, fairlead 302 axially has screwed hole 3021, branching block at different levels all has corresponding counter sink 3038, rely on sunk screw 3,037 three branching blocks evenly can be fixed on fairlead 302 respectively vertically; Outer arcuate section 3077 in the segmental arc 3063 of profiling side seal mould 306 and mold frame 307 and the first Casting Roller and the second Casting Roller is tangent coordinates, play side seal effect to roll casting zone.Profiling side seal mould 306 is provided with counter sink 3061,3062 and cylindrical hole 3064 are closed up in taper, and taper closing in 3062 realizes even cloth stream jointly with annular current distribution device 303, ensures that molten metal liquid is evenly coated on metal pipe material 4 to be composite.
Referring to Figure 11, described guiding trestle 5 comprises flipper guide 501, riser 502, tubing locating rack 503 and adjustable ring 504.Flipper guide 501 has chute 5012, riser 502 is provided with boss 5021, and riser 502 and flipper guide 501 rely on bolt to be fixed on horizontal framework 1.As shown in figure 12, tubing locating rack 503 has fixing hole 5031 and spring fixed bar connecting hole 5032, and tubing locating rack 503 relies on and is bolted on riser 502, and adjustable ring 504 is placed in sleeve 5033, and tubing locating rack 503 is connected with riser 502 by bolt.By changing the size of adjustable ring 504 to adapt to the multiple tube base material of different-diameter specification.Referring to Fig. 1 and Fig. 4, elevation and subsidence regulating device 2, cast unit 3 and guiding trestle 5 three integral installation are on horizontal framework 1, elevation and subsidence regulating device 2 relies on split bearing 202 to be arranged in frame 1, wedge 205 is arranged in the horizontal guide rail that on riser boss 5021 and flipper guide, plane 5011 is formed, fit in lifting inclined-plane 3075 simultaneously on lozenges and mold frame 307, common formation lifting unit, up and down balance system spring 8 relies on spring shaft 801 to be fixed on immediately below tubing locating rack 503, spring shaft 801 one end relies on nut 802 to fix, one end relies in the screwed hole 3076 being threaded and being fixed on mold frame 307 upper surface, the structure of mold frame 307 as shown in Figure 9.
The use of each device of summary bimetallic stratiform multiple tube solid-liquid casting and rolling machine and operation principle:
First rotating adjustment handwheel 201 drives screw mandrel 203 to rotate, and then drive crossbeam 204 to move horizontally, realize moving in wedge 205 horizontal guide rail that plane 5011 is formed on riser boss 5021 and flipper guide, the horizontal shifting driven mold framework 307 of wedge 205 moves up and down, and vertical movement path relies on the slide block 3072 on mold frame 307 to move up and down realization in flipper guide chute 5012, moving up and down of mold frame 307 drives the lifting of cast unit 3.
Unit is poured into a mould referring to shown in Fig. 6, before casting, rely on elevation and subsidence regulating device 2 that cast unit 3 is promoted to proper height, by molten metal as molten state aluminium liquid injects front case 301 along inclination drainage plate 3011, molten metal is through the shunting action of the built-in branching block of annular current distribution device, molten metal is evenly flowed out ringwise around inner layer metal pipe 4, the stability of metal bath surface can be ensured simultaneously.
Referring to Fig. 4, by elevation and subsidence regulating device 2, cast unit 3 and up and down balance system spring integrated installation on guiding trestle 5, before casting starts, after adjustment cast unit 3 to proper height, select suitable adjustment ring 504, after metal pipe material 4 to be composite being passed successively the fairlead 302 of adjustment ring 504, annular current distribution device 303, in the round pass 63 that feeding two Casting Rollers are formed smoothly.
Composite bimetal pipe solid-liquid casting production process is:
1, utilize the rotation hand wheel 701 of pressure adjusting device 7, the first Casting Roller 61 and the second Casting Roller 62 centering are pressed against and form round pass 63; Utilize elevation and subsidence regulating device 2 that cast unit 3 is adjusted to proper height, open casting and rolling machine and make it enter idling conditions;
2, after metal pipe material to be composite being carried out outer surface rust cleaning, cleaning, drying and processing, successively through after adjustment ring 504 and current distribution device fairlead 302, smoothly in feeding casting roller aperture 63;
3, case before coating molten metal liquid being injected along inclination drainage plate, molten metal injects by profiling side seal mould 306 and the annular crystallizer that jointly forms with the Casting Roller unit 6 of pass, metal pipe material to be composite 4 after annular current distribution device 303 is shunted, under rapid solidification and draught pressure effect, realize the metallurgical compound of coating metal and metal pipe material to be composite.
Below in conjunction with specific embodiment, present device occupation mode is illustrated:
Embodiment 1:
For steel/Al bimetal lamellar composite pipe, adopt present device processing steel/aluminium lamination shape multiple tube, select external diameter to be
wall thickness be the Q235 seamless steel pipe of 4mm as metal pipe material 4 to be composite, commercial-purity aluminium, as clad material, produces steel/aluminium composite pipe that coating metal thickness is 2.5mm.
1, first Q235 metal tube 4 outer surface to be composite is carried out the process such as removal iron scale and degreasing, make its clean surface;
2, by aluminum ingot melting, be heated to 700 DEG C and be incubated;
3, utilize elevation and subsidence regulating device 2 that cast unit 3 is adjusted to proper height, open heater 304, annular current distribution device 303 is preheated to 250 DEG C, and setting roll casting speed is 1.2m/min, opens casting and rolling machine and enters idle running holding state;
4, by metal pipe material 4 to be composite through internal diameter be successively
adjustment ring 504, after current distribution device fairlead 302, smoothly in feeding Casting Roller round pass, circular hole diameter is
5, case 301 before 700 DEG C of molten state aluminium liquid are injected, enter in annular current distribution device 303 by drainage plate drainage, after annular current distribution device 303 internal shunt block shunting, realize annular in exit evenly go out stream, continuous uniform ground injects by profiling side seal mould 306, with in the annular crystallizer that Casting Roller unit 6 and the metal pipe material to be composite 4 of pass are formed jointly, under the rapid solidification and draught pressure effect of the first Casting Roller 61 and the second Casting Roller 62, make to form reliable metallurgical binding between coating metal and inner layer steel pipe surface, thus realize utilizing solid-liquid rolling casting technology production specification to be external diameter
coating aluminium thickness is the steel/aluminium composite pipe of 2.5mm.
Embodiment 2:
For copper/Al bimetal lamellar composite pipe, adopt present device processing copper/aluminium lamination shape multiple tube, select external diameter
wall thickness 2mm industry copper tube is as metal pipe material 4 to be composite, and commercial-purity aluminium, as clad material, produces copper/aluminium composite pipe that coating metal thickness is 2mm.
1, first copper pipe 4 outer surface to be composite is carried out the process such as removal iron scale and degreasing, make its clean surface;
2, by aluminum ingot melting, be heated to 700 DEG C and be incubated;
3, utilize elevation and subsidence regulating device 2 that cast unit 3 is adjusted to proper height, open heater 304, annular current distribution device 303 is preheated to 250 DEG C, and setting roll casting speed is 1.2m/min, opens casting and rolling machine and enters idle running holding state;
4, by metal pipe material 4 to be composite through internal diameter be successively
adjustment ring 504, after current distribution device fairlead 302, smoothly in feeding Casting Roller round pass, circular hole diameter is
5, case 301 before 700 DEG C of molten state aluminium liquid being injected, enter in annular current distribution device 303 by drainage plate drainage, after the shunting of current distribution device internal shunt block, to realize annular in exit evenly go out stream, continuous uniform ground injects by profiling side seal mould 306, the annular crystallizer that forms with Casting Roller unit 6 and metal pipe material to be composite 4 outer surface of pass.Under the rapid solidification and draught pressure effect of the Casting Roller of the first Casting Roller 61 and the second Casting Roller 62, make coating metal and internal layer plumbers shed form reliable metallurgical binding, thus realize utilizing solid-liquid rolling casting technology production specification to be external diameter
coating aluminium thickness is the copper/aluminium composite pipe of 2mm.
Last it is noted that above-described each embodiment is only for illustration of technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or to wherein partly or entirely technical characteristic carry out equivalent replacement; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a bimetallic stratiform multiple tube solid-liquid composite casting milling train, it comprising frame, pressure adjusting device, for pouring into cast unit and the Casting Roller unit of molten metal, to it is characterized in that: also comprise be arranged in annular current distribution device above Casting Roller unit, the heater that is coated on annular current distribution device outside, be arranged on annular current distribution device top for guiding and keeping one through the tubing guiding trestle of the pipe base material to be composite of annular current distribution device;
Described Casting Roller unit comprises and being arranged in juxtaposition in the horizontal direction and the first Casting Roller of adjoining each other of roll surface and the second Casting Roller, the roll surface of the first Casting Roller and the second Casting Roller offers circumferential cannelure, the cross section of described circumferential cannelure is semicircle, the described circumferential cannelure of described first Casting Roller and the second Casting Roller forms round pass at adjoining position, described round pass is passed wherein for described pipe base material to be composite, and the diameter of described round pass is set to the diameter being greater than pipe base material to be composite;
The exocoel that described annular current distribution device comprises fairlead, outer wall and is arranged between described fairlead and described outer wall, described fairlead passes for pipe base material to be composite, described exocoel and described cast unit fluid communication, pass through for molten metal liquid, pipe base material to be composite and molten metal liquid converge in the exit of described annular current distribution device and jointly enter the round pass of Casting Roller unit, and rolling casting bonding is shaped wherein.
2. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 1, it is characterized in that: described cast unit comprises front case, cover plate, column, gripper shoe, profiling side seal mould and mold frame, described profiling side seal mould is inserted in described mold frame, described cover plate and described mold frame are by Stud connection, and described profiling side seal mould and mold frame outer arcuate section are that tangency location arranges and forms Casting Roller unit side seal district with the outer surface of the first Casting Roller and the second Casting Roller respectively.
3. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 2, is characterized in that: the material of described profiling side seal mould is alumina silica refractory.
4. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 3, is characterized in that: the variable cross-section hole that described profiling side seal mold center offers counter sink and the bellmouth that is connected with described counter sink and cylindrical hole are formed.
5. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 2, it is characterized in that: the inside of described front case is provided with inclination drainage plate, cloth head piece is offered in the bottom of described front case, and the external stability of described fairlead has choker bar to form the entrance of annular current distribution device.
6. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 1, it is characterized in that: the outer wall of described annular current distribution device is made up of dissection type outer shroud, the lower end of described outer shroud is stairstepping, can be positioned in the counter sink of described profiling side seal mould, described fairlead coordinate with the bell of described profiling side seal mould form annular current distribution device go out head piece.
7. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 4, it is characterized in that: the inside of described annular current distribution device adopts stagewise cloth stream mode, it comprises first order branching block, second level branching block and third level branching block, and described first order branching block, second level branching block and third level branching block set gradually vertically and be evenly fixed on the outside of described fairlead.
8. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 1, it is characterized in that: described guiding trestle comprises flipper guide, riser, tubing locating rack and adjustable ring, described flipper guide has chute, described riser is provided with boss, and the upper surface of described boss and described flipper guide forms the horizontal guide rail of wedge jointly.
9. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 8, it is characterized in that: described tubing locating rack has fixing hole and spring fixed bar connecting hole, described adjustable ring is placed in a sleeve, can be adapted to the multiple tube base material of different-diameter specification by the size changing adjustable ring, the lower end of described tubing locating rack is provided with balancing spring.
10. bimetallic stratiform multiple tube solid-liquid composite casting milling train according to claim 1, it is characterized in that: described frame is horizontal framework, upper rack is provided with the elevation and subsidence regulating device for regulating annular current distribution device height, described elevation and subsidence regulating device comprises adjustment handwheel, split bearing seat, screw mandrel, crossbeam and wedge, fitting in the lifting inclined-plane of described wedge and described mold frame, jointly forms lifting unit; The horizontal guide rail that on the flipper guide that described wedge is arranged in guiding trestle, supporting plane and riser boss are formed, described adjustment handwheel relies on flat key to be connected with screw mandrel, and screw mandrel end dependence screw thread is connected with crossbeam.
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