CN108247020A - A kind of device using hollow roll production composite roll - Google Patents
A kind of device using hollow roll production composite roll Download PDFInfo
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- CN108247020A CN108247020A CN201810297544.7A CN201810297544A CN108247020A CN 108247020 A CN108247020 A CN 108247020A CN 201810297544 A CN201810297544 A CN 201810297544A CN 108247020 A CN108247020 A CN 108247020A
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- Prior art keywords
- roll
- electrode
- hollow roll
- hollow
- metal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
- B22D23/06—Melting-down metal, e.g. metal particles, in the mould
- B22D23/10—Electroslag casting
Abstract
The invention discloses a kind of devices using hollow roll production composite roll, belong to electroslag remelting technique field.A kind of device using hollow roll production composite roll of the present invention, including hollow roll, metal electrode and bottom water tank, the bottom water tank is set to the bottom of hollow roll, is used to accommodate metal bath and electroslag layer in hollow roll；Inside the insertion hollow roll of the metal electrode, the bottom of metal electrode is provided with consumable metal.Inside the insertion hollow roll of metal electrode, the bottom of metal electrode is provided with consumable metal, and using the hollow roll of composite roll cladding material as crystallizer, the metal electrode of inner layer material carries out remelting wherein, realizes the effective compound of ectonexine metal.
Description
Technical field
The invention belongs to electroslag remelting technique fields, are rolled more specifically to a kind of using hollow roll production is compound
The device of roller.
Background technology
Roll is the most important tool of Rolling production.Different rolling conditions and different rolled products, to the property of roll
Energy, material propose different requirements.In general, roll will intensity, toughness, wearability, thermal fatigue resistance, resistance to flaking with
And shaggy resistivity etc., there is higher comprehensive performance.Every roll is each to body surface and roller core, roll neck
The requirement at a position is different.It is relatively difficult that the roll of single material will meet multinomial requirement simultaneously.Therefore, roll manufactures
Technique is just gradually developed to from single material using composite roll, to solve this contradiction.Current composite roll manufacturing process
Including：
(1) the shortcomings that this methods of douche are maximum is exactly a large amount of outer layer molten iron of necessary melting, and casting recovery rate is low,
Energy consumption is big；
(2) the shortcomings that this methods of centrifugal casting are maximum be exactly under the influence of centrifugal force, some compounds in steel by
In the difference of density, it may occur that segregation phenomena；
(3) this method investment of production equipment of CPC technologies is big, mode of operation is complicated, the cost is relatively high for manufacture；
(4) liquid metal electroslag melting composite roll technology major defects include at 2 points：First, liquid molten steel does not obtain
Effective refining；Second is that equipment investment is big, mode of operation is complicated.
Therefore, composite roll manufacturing process also needs to overcome there are many problems, limits the wide of bimetallic composite roll
General application.Particularly in cold roll field, mainly or based on solid roll (electroslag remelting+forging), cost is huge.Exploitation
Go out a kind of bimetallic composite roll manufacturing method, have great importance for reducing steel rolling cost, improving steel product quality.
Through retrieval, have relevant technical solution and disclose.Such as：A kind of manufacturing method (application number of composite roll：
CN95117832.6, the applying date：1995-12-12), composite roll is manufactured using electroslag smelting casting method.With pre-manufactured roller
Core is the interior crystallizer of electroslag smelting casting, to need consutrode of the compound roll housing layer material as electroslag smelting casting.Outside the device
The diameter of internal diameter and disjunctor dual U-shaped crucible the molten metal outlet of crystallizer is equal to the outer diameter for needing compound composite roll；From power consumption
The Melting rate control of pole is in 100~1000kg/h.Although this method improves composite performance, but production cost needs into one
Step reduces, roll quality needs to be further improved.
In addition, a kind of device for compounding liquid-state electroslag rollers (application number：CN201120453174.5, the applying date：2011-11-
16), including：Water mold, the water mold has presets the comparable internal diameter of composite bed outer diameter with roll to be composite
Channel；The top of the crystallizer is additionally provided with for the water mold and be inserted into the channel to be composite roll
Advance molten metal liquid and the moderate soak stove of slag liquid are toppled in gap between roller.Although the technology can carry out roll
Complex repairation, but roll quality needs to be further improved.
Invention content
1. technical problems to be solved by the inivention
It is an object of the invention to overcome in the prior art, composite roll manufacturing process cost is higher, second-rate asks
Topic, provides a kind of device using hollow roll production composite roll, and bottom water tank is set to the bottom of hollow roll, hollow roll
It is interior for accommodating metal bath and electroslag layer, inside the insertion hollow roll of metal electrode；Using composite roll cladding material
Hollow roll as crystallizer, the metal electrode of inner layer material carries out remelting, realizes the effective of ectonexine metal wherein
It is compound.
2. technical solution
In order to achieve the above objectives, technical solution provided by the invention is：
A kind of device using hollow roll production composite roll of the present invention, including hollow roll, metal electrode and bottom
Water tank, the bottom water tank are set to the bottom of hollow roll, are used to accommodate metal bath and electroslag layer in hollow roll；It is described
Inside the insertion hollow roll of metal electrode, the bottom of metal electrode is provided with consumable metal.
Preferably, the lower part of the bottom water tank is provided with turntable, and turntable is used to drive bottom water tank rotation.
Preferably, the outside of hollow roll is provided with cooling-part, and cooling-part is set along the length direction of hollow roll
It puts.
Preferably, metal electrode includes first electrode and second electrode, and first electrode and second electrode are distinguished by conducting wire
It is connected with the two poles of the earth of transformer.
Preferably, cooling spray is provided on cooling-part, cooling spray is used to spray cooling water to hollow roll surface.
Preferably, cooling-part is 30~45m to the water spray control on hollow roll surface3/ ton steel.
Preferably, the distance between first electrode and roll axial line are d1, between second electrode and roll axial line
Distance is d2, and d1≠d2。
Preferably, first electrode and second electrode are arranged in parallel, and first electrode, second electrode and roll axial line are put down
Row.
Preferably, supporting mechanism is further included, which includes vertical rack and horizontal stand, one end of horizontal stand
It is slidably mounted on vertical rack, metal electrode is installed on the one end of horizontal stand far from vertical rack.
Preferably, electrode holder part is slidably mounted on horizontal stand, and first electrode and second electrode are by being installed on water
On flat stent.
3. advantageous effect
Using technical solution provided by the invention, compared with existing known technology, there is following remarkable result：
(1) a kind of device using hollow roll production composite roll of the invention, bottom water tank are set to hollow roll
Bottom, hollow roll is interior to be used to accommodate metal bath and electroslag layer；Inside the insertion hollow roll of metal electrode, metal electrode
Bottom be provided with consumable metal, using the hollow roll of composite roll cladding material as crystallizer, the metal of inner layer material
Electrode carries out remelting wherein, realizes the effective compound of ectonexine metal；
(2) a kind of device using hollow roll production composite roll of the invention, the lower part of bottom water tank is provided with rotation
Platform, turntable is for driving bottom water tank rotation, and the outside of hollow roll is provided with cooling-part, and cooling-part is to hollow roll
Outer surface water-spraying control, while rotate cladding material in esr process, it is outer to ensure that cooling water uniformly sprays
The surface of layer material so that the thickness of cladding material is uniform after the completion of remelting.
Description of the drawings
Fig. 1 is a kind of device overall structure diagram that composite roll is produced using hollow roll of the present invention；
Fig. 2 is the hollow roll stepwise schematic views of the present invention；
Fig. 3 is the structure diagram of embodiment 2；
Fig. 4 is the structure diagram of embodiment 3.
Label declaration in schematic diagram：
110th, transformer；120th, supporting mechanism；121st, vertical rack；122nd, horizontal stand；130th, metal electrode；131st,
One electrode；132nd, second electrode；133rd, consumable metal；140th, electrode holder part；
210th, hollow roll；211st, section is solidified；212nd, molten bath section；213rd, electroslag section；214th, hollow section；221st, interior metal
Layer；222nd, metal bath；223rd, electroslag layer；230th, roll axial line；
310th, bottom water tank；320th, turntable；330th, cooling-part；331st, cooling spray；340th, vibration component；350th, it lifts
Component.
Specific embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
Structure, ratio, size depicted in this specification attached drawing etc., only to coordinate the revealed content of specification,
So that those skilled in the art understands and reads, the enforceable qualifications of the present invention are not limited to, therefore do not have technology
On essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
The effect of and the purpose that can reach under, should all still fall in the range of disclosed technology contents are obtained and can be covered.Together
When, cited such as " on ", " under ", "left", "right", " centre " term, are merely convenient to the clear of narration in this specification,
Rather than to limit enforceable range, relativeness is altered or modified, in the case where changing technology contents without essence, when also regarding
For the enforceable scope of the present invention.
Embodiment 1
As shown in Figure 1, a kind of device using hollow roll production composite roll of the present embodiment, including supporting mechanism
120th, hollow roll 210, metal electrode 130 and bottom water tank 310, wherein supporting mechanism 120 include vertical rack 121 and horizontal branch
Frame 122, one end of horizontal stand 122 are slidably mounted on vertical rack 121, and horizontal stand 122 can be along vertical rack 121
Short transverse slided, so as to adjust the height of horizontal stand 122.It is separate that metal electrode 130 is installed on horizontal stand 122
One end of vertical rack 121, detailed description are：Electrode holder part 140 is provided on horizontal stand 122, the electrode clamping part
Part 140 is slidably mounted on horizontal stand 122, and first electrode 131 and second electrode 132 are installed on by electrode holder part 140
On horizontal stand 122, sliding electrode hold assembly 140 can adjust first electrode 131 and second electrode 132 in hollow roll
Position in 210.
The bottom water tank 310 of the present embodiment is set to the bottom of hollow roll 210, and bottom water tank 310 has hollow roll 210
What support, the effect of cooling, and bottom water tank 310 and hollow roll 210 surrounded composite roll electroslag smelting jointly reacts molten bath, molten
The bottom in pond cools down under 310 cooling effect of bottom water tank, solidifies and forms composite roll inner metal layer 221,221 top of inner metal layer
Metal bath 222 and electroslag layer 223 are followed successively by, is used to accommodate metal bath 222 and electroslag layer 223 in the hollow roll 210.
The bottom of metal electrode 130 is provided with consumable metal 133, which is the inside gold of composite roll
Belong to material, the consumable metal 133 of 130 bottom of metal electrode is inserted into inside hollow roll 210, and consumable metal 133 and electroslag layer
223 are in direct contact.What deserves to be explained is metal electrode 130 includes first electrode 131 and second electrode 132, first electrode 131
It is arranged in parallel with second electrode 132, and first electrode 131, second electrode 132 are parallel with roll axial line 230.First electrode
131 and second electrode 132 be connected by the two poles of the earth of conducting wire respectively with transformer 110, first electrode 131 and second electrode 132 are logical
Electric forming electrical circuit carries out melting, during melting consumable metal 133 melt, refine after into metal bath 222, metal melts
222 cooled and solidified of pond forms the inner layer metal of composite roll.
The lower part of the bottom water tank 310 of the present embodiment is provided with turntable 320, and turntable 320 is used to that bottom water tank 310 to be driven to revolve
Turn.What deserves to be explained is the outside of hollow roll 210 is provided with cooling-part 330, cooling-part 330 is along hollow roll 210
Length direction setting.Cooling spray 331 is provided on cooling-part 330, cooling spray 331 is used for 210 table of hollow roll
Spray cooling water in face.Cooling-part 330 is 30~45m to the water spray control on 210 surface of hollow roll3/ ton steel.
Simultaneously in esr process, turntable 320 drives bottom water tank 310 and hollow roll 210 to rotate so that outer layer material
Material rotates, and relative rotation also occurs between cladding material and metal bath 222 with metal bath 222, not only promotes
The homogenization of internal layer composition tissue, and promote the production of inner layer metal tissue column crystal；In addition, the rotation of hollow roll 210
Turning to ensure that cooling water uniformly sprays the surface of cladding material so that the thickness of cladding material is uniform after the completion of remelting, into
And improve the quality of production of composite roll.During melting by cooling-part 330 to the outer surface of hollow roll 210 into
Row water-spraying control.200 DEG C higher than the fusing point of liquid slag of fusing point of consumable metal 133 or more.The specific resistance of liquid slag is not more than
0.5Ω-1.cm-1.Wherein, liquid slag includes Al2O3And CaF2。
The material of the hollow roll 210 of the present embodiment is M2 steel, and roller core material is 9Cr2Mo, i.e. 133 material of consumable metal
For 9Cr2Mo.The method of smelting of the present invention, outer layer metal of the smelting apparatus using hollow roll 210 as composite roll, by liquid
State slag pours into and electroslag layer 223 is formed in hollow roll 210, and the consumable metal 133 of 130 bottom of metal electrode is inserted into electroslag layer 223
In layer, then be powered and to form electrical circuit and carry out melting, during melting consumable metal 133 melt, refine after into metal bath
222,222 cooled and solidified of metal bath forms the inner layer metal of composite roll.Turntable 320 drives bottom water during melting
Case 310 and hollow roll 210 are rotated, and the speed of rotation of turntable 320 is 5-28r/min.
Hollow hollow roll 210 is first installed on bottom water tank 310 by remelting before starting, and then opens cooling-part 330
Cooling water, cooling spray 331 carries out the outer surface of hollow roll 210 water-spraying control, and the flow of cooling water is 30m3/ t, together
Start slugging outside Shi Lu.The clinker 20%CaO+20%Al of the present embodiment2O3+60CaF2, 1250 DEG C of fusing point, specific resistance 0.5
Ω-1.cm-1；After the completion of slag melting, liquid slag poured into, electroslag layer 223 is formed in hollow roll 210, then by metal electrode
The consumable metal 133 of 130 bottoms is inserted into 223 layers of electroslag layer, is started to electric remelting.After remelting stabilization, start turntable
320, turntable 320 drives hollow roll 210 to be rotated together with bottom water tank 310, and the present embodiment rotating speed is 5r/min.
A kind of device using hollow roll production composite roll of the present embodiment, first electrode 131 and second electrode 132
Composite roll is produced using the method for bipolar series electroslag remelting, reflow process is not used copper crystallizer, rolled using compound
The hollow roll 210 of roller cladding material is used as crystallizer, and the metal electrode 130 of inner layer material carries out remelting wherein, hollow to roll
The external of roller 210 carries out water-spraying control, realizes the effective compound of ectonexine metal；Make outer layer in esr process simultaneously
Material hollow roll 210 rotates, and ensures that cooling water uniformly sprays the surface of hollow roll 210 so that remelting is completed
The thickness of cladding material is uniform afterwards, so as to improve the quality of composite roll.
Embodiment 2
The substance of the present embodiment with embodiment 1, the difference lies in：As shown in Fig. 2, hollow roll 210 by down toward
On be in turn divided into solidification section 211, molten bath section 212, electroslag section 213 and hollow section 214；Wherein solidify section 211 and hollow roll
The position of 210 internal layer frozen metals is corresponding, and molten bath section 212 is opposite with the position of the metal bath 222 in hollow roll 210
It should；Electroslag section 213 is corresponding with the position of the electroslag layer 223 in hollow roll 210；The inside of hollow section 214 is hollow parts,
The stage not yet reacted.During the external progress water-spraying control of hollow roll 210, the nozzle of cooling-part 330
To carrying out spraying water outside hollow roll 210, cold intensity is respectively Q1, Q2, Q3 and Q4, wherein Q2>Q3>Q1>Q4.So as to promote
The metal relatively quick refinement for being cooled into solid metal, promoting inner layer metal tissue of molten bath section 212, and Q3's is cold
But intensity is relatively small, can both ensure the temperature of electroslag section 213, and consumable metal 133 is promoted to be fusing into electroslag layer
223, and can ensure that electroslag layer 223 and the intersection temperature of metal bath 222 will not be reduced rapidly, so as to ensure that internal layer gold
Belong to the uniformity of tissue.
Embodiment 3
The substance of the present embodiment with embodiment 1, the difference lies in：As shown in figure 3, first electrode 131 and roll
The distance between axial line 230 is d1, the distance between second electrode 132 and roll axial line 230 are d2, and d1≠d2.And it is
First electrode 131 and second electrode 132 are identical and for R, then d2>d1+ R, so that bottom water tank 310 is during rotation,
One electrode 131 and the electroslag layer 223 of second electrode 132 and liquid carry out relative motion, and first electrode 131 and second electrode
132 movement locus differs, does not also coincide, and electroslag layer 223 is uniformly distributed in so as to promote the inner layer metal of fusing
In, the homogenization of inner layer metal distribution is not only increased, and the liquid metals of fusing and electroslag layer 223 are occurred adequately
Reaction.
The material of the hollow roll 210 of the present embodiment is 9Cr2Mo steel, and roller core material is No. 45 steel, i.e. consumable metal 133
Material is No. 45 steel.Hollow hollow roll 210 is first installed on bottom water tank 310 by remelting before starting, and then opens cooling end
The cooling water of part 330, cooling spray 331 carry out water-spraying control to the outer surface of hollow roll 210, and the flow of cooling water is
40m3/ t, while start slugging outside stove.The clinker 30%Al of the present embodiment2O3+70CaF2, 1320 DEG C of fusing point, specific resistance 0.3
Ω-1.cm-1；After the completion of slag melting, liquid slag poured into, electroslag layer 223 is formed in hollow roll 210, then by metal electrode
The consumable metal 133 of 130 bottoms is inserted into 223 layers of electroslag layer, is started to electric remelting.After remelting stabilization, start turntable
320, turntable 320 drives hollow roll 210 to be rotated together with bottom water tank 310, and the present embodiment rotating speed is 8r/min.
Embodiment 4
The substance of the present embodiment with embodiment 1, the difference lies in：As shown in figure 4, the bottom of turntable 320 is also
Lifting part 350 is provided with, the lifting part 350 is for being lifted or reducing bottom water tank 310, so that bottom water tank 310 connects
It is lifted or is reduced in the vertical direction with hollow roll 210, when consumable metal 133 consumes, you can with level
Stent 122 moves downward, and the metal material of consumable metal 133 is fed into hollow roll 210, can also be by being lifted bottom water
Case 310 so that consumable metal 133 is fed into hollow roll 210.Furthermore it is noted that the outside of hollow roll 210
Vibration component 340 is provided with, which is correspondingly arranged with the metal bath 222 in hollow roll 210, vibration component
340 pairs of hollow rolls 210 vibrate so that and during cooled and solidified, crystal grain is refined metal bath 222, so as to
So that inner layer metal tissue is finer and close, while but also inner layer metal composition is more uniform, having for ectonexine metal is realized
Imitate quality that is compound, and then improving composite roll.Vibration component 340 can be moved along the length direction of hollow roll 210
It is dynamic, so that vibration component 340 is correspondingly arranged always with the metal bath 222 in hollow roll 210 so that metal bath
222 during cooled and solidified, and crystal grain is refined, so that inner layer metal tissue is finer and close.
The material of the hollow roll 210 of the present embodiment is W6Mo5Cr4V2 steel, and roller core material is 35CrMo steel, i.e. consumable gold
Belong to 133 materials for 35CrMo steel.Hollow hollow roll 210 is first installed on bottom water tank 310 by remelting before starting, and is then opened
The cooling water of cooling-part 330, cooling spray 331 carry out water-spraying control, the flow of cooling water to the outer surface of hollow roll 210
For 45m3/ t, while start slugging outside stove.The clinker 30%Al of the present embodiment2O3+70CaF2, 1320 DEG C of fusing point, specific resistance
0.3Ω-1.cm-1；After the completion of slag melting, liquid slag poured into, electroslag layer 223 is formed in hollow roll 210, then metal is electric
The consumable metal 133 of 130 bottom of pole is inserted into 223 layers of electroslag layer, is started to electric remelting.After remelting stabilization, start turntable
320, turntable 320 drives hollow roll 210 to be rotated together with bottom water tank 310, and the present embodiment rotating speed is 12r/min.
The present invention is described in detail above in conjunction with specific exemplary embodiment.It is understood, however, that it can not take off
It is carry out various modifications in the case of from the scope of the present invention being defined by the following claims and modification.Detailed description and drawings
Should be to be considered only as it is illustrative and not restrictive, if there is any such modifications and variations, then they all will
It falls into the scope of the present invention described here.In addition, background technology is intended to Development Status and meaning in order to illustrate this technology,
It is not intended to limit the application field of the present invention or the application and the present invention.
Claims (10)
1. a kind of device using hollow roll production composite roll, it is characterised in that：Including hollow roll (210), metal electricity
Pole (130) and bottom water tank (310), the bottom water tank (310) are set to the bottom of hollow roll (210), and hollow roll (210) is interior
For accommodating metal bath (222) and electroslag layer (223)；The insertion hollow roll (210) of the metal electrode (130) is internal,
The bottom of metal electrode (130) is provided with consumable metal (133).
2. a kind of device using hollow roll production composite roll according to claim 1, it is characterised in that：The bottom
The lower part of water tank (310) is provided with turntable (320), and turntable (320) is for driving bottom water tank (310) to rotate.
3. a kind of device using hollow roll production composite roll according to claim 1, it is characterised in that：It is hollow to roll
The outside of roller (210) is provided with cooling-part (330), and cooling-part (330) is set along the length direction of hollow roll (210)
It puts.
4. a kind of device using hollow roll production composite roll according to claim 1, it is characterised in that：Metal electricity
Pole (130) includes first electrode (131) and second electrode (132), and first electrode (131) and second electrode (132) pass through conducting wire
The two poles of the earth with transformer (110) are connected respectively.
5. a kind of device using hollow roll production composite roll according to claim 3, it is characterised in that：Cooling end
It is provided with cooling spray (331) on part (330), cooling spray (331) to hollow roll (210) surface for spraying cooling water.
6. a kind of device using hollow roll production composite roll according to claim 3, it is characterised in that：Cooling end
Part (330) is 30~45m to the water spray control on hollow roll (210) surface3/ ton steel.
7. a kind of device using hollow roll production composite roll according to claim 4, it is characterised in that：First electricity
The distance between pole (131) and roll axial line (230) are d1, between second electrode (132) and roll axial line (230) away from
From for d2, and d1≠d2。
8. a kind of device using hollow roll production composite roll according to claim 4, it is characterised in that：First electricity
Pole (131) and second electrode (132) are arranged in parallel, and first electrode (131), second electrode (132) and roll axial line (230)
It is parallel.
9. according to a kind of device using hollow roll production composite roll of claim 1-8 any one of them, feature exists
In：Supporting mechanism (120) is further included, which includes vertical rack (121) and horizontal stand (122), level branch
One end of frame (122) is slidably mounted on vertical rack (121), and metal electrode (130) is installed on horizontal stand (122) far from perpendicular
One end of straight bracket (121).
10. a kind of device using hollow roll production composite roll according to claim 5, it is characterised in that：Electrode
Hold assembly (140) is slidably mounted on horizontal stand (122), and first electrode (131) and second electrode (132) are clamped by electrode
Component (140) is installed on horizontal stand (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297544.7A CN108247020B (en) | 2018-04-04 | 2018-04-04 | Device for producing composite roller by adopting hollow roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297544.7A CN108247020B (en) | 2018-04-04 | 2018-04-04 | Device for producing composite roller by adopting hollow roller |
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| CN108247020A true CN108247020A (en) | 2018-07-06 |
| CN108247020B CN108247020B (en) | 2020-10-02 |
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| CN114700481A (en) * | 2022-04-06 | 2022-07-05 | 苏州大学 | Device and method for refining ingot casting structure and improving ingot casting surface quality |
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| CN114700481A (en) * | 2022-04-06 | 2022-07-05 | 苏州大学 | Device and method for refining ingot casting structure and improving ingot casting surface quality |
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