CN108251655A - A kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality - Google Patents
A kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality Download PDFInfo
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- CN108251655A CN108251655A CN201810297543.2A CN201810297543A CN108251655A CN 108251655 A CN108251655 A CN 108251655A CN 201810297543 A CN201810297543 A CN 201810297543A CN 108251655 A CN108251655 A CN 108251655A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
Abstract
The invention discloses a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality, belong to electroslag remelting technique field.The present invention includes the pulse power, melting crystallizer, metal electrode and bottom water tank, and the bottom water tank is set to the bottom of melting crystallizer, is used to accommodate metal bath and electroslag layer in melting crystallizer；Inside the insertion melting crystallizer of the metal electrode, the consumable metal of metal electrode bottom is inserted into electroslag layer, and the anode of the pulse power is connected with metal electrode, and the cathode of the pulse power is connected with bottom water tank.The anode of the pulse power of the present invention is connected with metal electrode, the cathode of the pulse power is connected with bottom water tank, the pulse power applies into metal bath under pulse current effect, and faint disturbance is generated in metal bath, it can promote the uniform of metal bath temperature field, so as to fulfill the feature similar to directional solidification growth, ingot solidification quality is improved.
Description
Technical field
The invention belongs to electroslag remelting technique field, more specifically to a kind of improvement electroslag remelting steel ingot solidification matter
The smelting apparatus of amount.
Background technology
Electroslag remelting refines as a kind of extraordinary metallurgical method, collection and freezes solidly on one, the material after electroslag remelting
Have many advantages, such as that high purity, solidified structure are fine and close, thus this method is play an important role in terms of high quality material is produced.
However there is also some problems for electro-slag re-melting method：
(1) metal bath (shape) depth is difficult to control.Keep Metallic Bath in ESR Process in it is shallow it is flat-shaped be to obtain
Obtain the guarantee of well-crystallized quality.However as the progress of reflow process, if smelting parameter cannot be controlled well, metal melts
Pond can gradually deepen, and be generated so as to cause partially solidified defect；
(2) refinement of crystalline structure.Although the column crystal in ESR ingot is not to be regarded as the defects of being ESR ingot, however, such as
Fruit can refine column crystal in addition become column crystal into equiax crystal, then for improve ESR ingot (be particularly some high-alloy steel,
Such as high-speed tool steel) quality have very great help.
In order to realize more than target, metallargist has carried out a large amount of basic research and technology development work, and obtains
Some achievements.Regrettably, there are some shortcomings for these achievements.Therefore, in current electroslag remelting field, invention one kind
Method improves the solidified structure of electroslag ingot, has great importance for the development of electroslag technology.
Through retrieval, have relevant technology and disclose.Such as：A kind of electroslag remelting process (application number of GH901 alloys：
CN201410403472.1, the applying date：2014-08-18), electroslag remelting using it is preceding slag charge is heated in batch-type furnace to 500~
1000 DEG C are toasted, and after the completion of baking, Titanium is added by the 0.4~0.6% of used slag charge total weight；Electroslag remelting,
Coordination electrode ingot burn-off rate is 0.013Dkg/min, speed undulated control is melted within ± 0.5kg/min, in electroslag remelting striking
After phase, the pure titanium particle of metal is added in by the amount of (0.078D~0.195D) g/15min in smelting period；With electroslag remelting
It carries out every 15min, the addition of the pure titanium particle of metal is successively decreased 10~20g；Sampling detection, controls the alloy in electroslag remelting mistake
Scaling loss amount in journey further reduces the alloy ESR ingot arc end and receives the difference of arc end Ti contents, it is uniform to obtain Ti contents
GH901 alloy ESR ingots, but the technology smelt ESR ingot Solidification Quality it is relatively poor, need 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, the problem of electroslag remelting steel ingot Solidification Quality is relatively poor, carry
For a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality, bottom water tank is set to the bottom of melting crystallizer, metal electricity
Inside the insertion melting crystallizer of pole, the consumable metal of metal electrode bottom is inserted into electroslag layer, under high-frequency impulse effect, gold
Belong to molten bath and generate faint disturbance, the uniform of temperature field of molten pool can be promoted, and promote the growth of equiax crystal, steel can be improved
Ingot Solidification Quality.
2. technical solution
A kind of smelting apparatus of improvement electroslag remelting steel ingot Solidification Quality of the present invention, the pulse power, melting crystallizer, gold
Belong to electrode and bottom water tank, the bottom water tank is set to the bottom of melting crystallizer, is melted in melting crystallizer for accommodating metal
Pond and electroslag layer；Inside the insertion melting crystallizer of the metal electrode, the consumable metal of metal electrode bottom is inserted into electroslag layer
In, the anode of the pulse power is connected with metal electrode, and the cathode of the pulse power is connected with bottom water tank.
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 pulse power is DC current, and the frequency of the DC current is 10-30KHz.
Preferably, pulse power output current=* DKnotA, wherein DKnotFor crystallizer diameter/cm.
Preferably, pulse power output voltage=0.5*DKnot+ V, wherein DKnotFor crystallizer diameter/cm.
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 metal electrode is by being installed on horizontal stand.
A kind of smelting apparatus for being improved electroslag remelting steel ingot Solidification Quality using bipolar electrode of the present invention, the pulse power are melted
Crystallizer, metal electrode and bottom water tank are refined, the bottom water tank is set to the bottom of melting crystallizer, is used to hold in melting crystallizer
Receiving has metal bath and electroslag layer；Inside the insertion melting crystallizer of the metal electrode, the consumable metal of metal electrode bottom
Be inserted into electroslag layer, metal electrode includes first electrode and second electrode, first electrode and second electrode respectively with the pulse power
Positive and negative anodes are connected.
Preferably, the distance between first electrode and crystallizer axial line are d1, second electrode and crystallizer axial line it
Between distance be 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.
3. advantageous effect
Using technical solution provided by the invention, compared with existing known technology, there is following remarkable result：
(1) a kind of smelting apparatus of improvement electroslag remelting steel ingot Solidification Quality of the invention, bottom water tank are set to melting knot
The bottom of brilliant device, melting crystallizer is interior to be used to accommodate metal bath and electroslag layer；In the insertion melting crystallizer of metal electrode
Portion, the consumable metal of metal electrode bottom are inserted into electroslag layer, and the anode of the pulse power is connected with metal electrode, the pulse power
Cathode is connected with bottom water tank, and the pulse power applies into metal bath under pulse current effect, and faint in metal bath generation
Disturbance, the uniform of metal bath temperature field can be promoted, so as to fulfill the feature similar to directional solidification growth, improve steel ingot
Solidification Quality；
(2) smelting apparatus of a kind of improvement electroslag remelting steel ingot Solidification Quality of the invention, the pulse that the pulse power generates
The molten bath flowing generated under the function of current can crush the column crystal produced, more forming core cores be generated, so as to promote
The conversion of column crystal orientation equiax crystal improves the equiaxial crystal ratio of solidified structure.
Description of the drawings
Fig. 1 is a kind of structure diagram for the smelting apparatus for improving electroslag remelting steel ingot Solidification Quality of the present invention；
Fig. 2 is the structure diagram of embodiment 2；
Fig. 3 is the structure diagram of embodiment 3；
Fig. 4 is the structure diagram of embodiment 4；
Fig. 5 is being shaken based on external setting of the hollow roll as the composite roll smelting apparatus of outer layer metal for embodiment 4
Dynamic component；
Fig. 6 is the structure diagram of embodiment 5；
Fig. 7 is flow chart when being smelted using smelting apparatus.
Label declaration in schematic diagram：
110th, transformer；111st, the pulse power；120th, supporting mechanism；121st, vertical rack；122nd, horizontal stand；130th, it is golden
Belong to electrode；131st, first electrode；132nd, second electrode；133rd, consumable metal；140th, electrode holder part；
210th, melting crystallizer；211st, hollow roll；
221st, steel ingot is solidified；222nd, metal bath；223rd, electroslag layer；230th, crystallizer axial line；
310th, bottom water tank；320th, turntable；330th, cooling-part；331st, cooling spray；340th, vibration 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 smelting apparatus of improvement electroslag remelting steel ingot Solidification Quality of the present embodiment, including pulse electricity
Source 111, melting crystallizer 210, metal electrode 130 and bottom water tank 310, the bottom water tank 310 are set to melting crystallizer 210
Bottom, it is common with melting crystallizer 210 that bottom water tank 310 plays the role of melting crystallizer 210 in support, cooling, and bottom water tank 310
The reaction molten bath of composite roll electroslag smelting is surrounded, the bottom in molten bath cools down under 310 cooling effect of bottom water tank, solidifies to be formed and coagulate
Gu steel ingot 221,221 top of solidification steel ingot is followed successively by metal bath 222 and electroslag layer 223.It is used to accommodate in melting crystallizer 210
There are metal bath 222 and electroslag layer 223；Inside the insertion melting crystallizer 210 of the metal electrode 130,130 bottom of metal electrode
The consumable metal 133 in portion is inserted into electroslag layer 223, and the anode of the pulse power 111 is connected with metal electrode 130, the pulse power 111
Cathode be connected with bottom water tank 310.Wherein melting crystallizer 210 carries out water-spraying control.The pulse power 111 and 110 phase of transformer
Even, the alternating current that transformer 110 exports is converted into pulse direct current by the pulse power 111.
The present embodiment further includes supporting mechanism 120, which includes vertical rack 121 and horizontal stand 122,
One end of horizontal stand 122 is slidably mounted on vertical rack 121, and horizontal stand 122 can be along the height side of vertical rack 121
To being slided, so as to adjust the height of horizontal stand 122.Metal electrode 130 is installed on horizontal stand 122 far from vertical rack
121 one end, detailed description are：Electrode holder part 140 is provided on horizontal stand 122, which slides
Horizontal stand 122 is installed on, metal electrode 130 is installed on by electrode holder part 140 on horizontal stand 122, sliding electrode
Hold assembly 140 can adjust position of the metal electrode 130 in melting crystallizer 210.
As shown in fig. 7, when the method for the present embodiment is smelted using smelting apparatus, metal electrode 130 is by the pulse power
111 pulse current is introduced into fusion process, and the energization of the pulse power 111 forms electrical circuit, the consumable metal of metal electrode 130
133 remeltings obtain steel ingot after solidifying again.It is described in detail and is：
Step 1: when being smelted using smelting apparatus, graphite electrode is used before 130 remelting of metal electrode first
Slag；
Step 1: the consumable metal 133 of metal electrode 130 is inserted into the liquid slag of melting crystallizer 210 after the completion of slugging
In, the anode of the pulse power 111 is connected with metal electrode 130, and the cathode of the pulse power 111 is connected with bottom water tank 310, pulse electricity
Source 111 is powered and forms electrical circuit, and 133 remelting of consumable metal of metal electrode 130 obtains steel ingot after solidifying again.Wherein pulse electricity
Source 111 is high-frequency direct-current electric current, and the frequency of the DC current is 10-30KHz.111 output current=180 of the pulse power~200*
DKnotA, wherein DKnotFor crystallizer diameter/cm.111 output voltages of the pulse power=0.5*DKnot+ 27~37V, wherein DKnotFor crystallizer
Diameter/cm.
It is an important technical barrier always, this is because common during pulse current is introduced metallurgical reaction
Steelmaking process in, be that pulse current is imported by molten steel using conductive, heat safe material.But molten steel temperature generally exists
1600 DEG C or more, it is difficult to which finding a kind of material can be inserted into molten steel for a long time.And refractory material is bound in molten steel
Secondary pollution is generated to molten steel.Therefore, the key core problem that can this problem just be applied into pulse current.Present invention wound
Proposing for the property made applies pulse current in esr process so that esr process is solidified in fusing, gold
Belonging to electrode 130 just completely can be as the bringing device of pulse current, and pulse current is introduced into the molten steel solidified.
The pulse power 111 applies into metal bath 222 under pulse current effect, and faint disturbance is generated in metal bath 222, can
Promote the uniform of 222 temperature field of metal bath, so as to fulfill the feature similar to directional solidification growth；In addition, the pulse power 111
The lower molten bath flowing generated of the pulse current effect of generation can crush the column crystal produced, generate more forming core cores
The heart so as to promote the conversion of column crystal orientation equiax crystal, improves the equiaxial crystal ratio of solidified structure, and then can improve steel ingot and coagulate
Stereoplasm amount.
The present embodiment remelting steel grade is 9Cr2Mo, a diameter of 400mm of crystallizer.Remelting starts preceding first by consumable metal 133
The bottom of metal electrode 130 is installed on, then the anode of high frequency pulse power supply 111 will be connected with metal electrode 130, by high frequency arteries and veins
The cathode for rushing power supply 111 is connected with bottom water tank 310.111 frequency of high frequency pulse power supply is set as 10KHz, is used after ready
After the completion of remelting slag melting, the consumable metal 133 of metal electrode 130 is dropped in metal bath 222 for graphite electrode slugging
Adjustment electric current is 8000A, effective voltage 55V.
Embodiment 2
The substance of the present embodiment is with embodiment 1, and the difference lies in as shown in Fig. 2, a kind of use of the present embodiment
Bipolar electrode improves the smelting apparatus of electroslag remelting steel ingot Solidification Quality, including the pulse power 111, melting crystallizer 210, metal electricity
Pole 130 and bottom water tank 310, bottom water tank 310 are set to the bottom of melting crystallizer 210, are used to accommodate in melting crystallizer 210
Metal bath 222 and electroslag layer 223, inside the insertion melting crystallizer 210 of metal electrode 130,130 bottom of metal electrode from
It consumes metal 133 to be inserted into electroslag layer 223, metal electrode 130 includes first electrode 131 and second electrode 132, first electrode 131
It is connected respectively with 111 positive and negative anodes of the pulse power with second electrode 132.First electrode 131 and second electrode 132 are arranged in parallel, and
First electrode 131, second electrode 132 are parallel with crystallizer axial line 230.
The remelting steel grade of the present embodiment is H13, a diameter of 500mm of crystallizer.Remelting first pacifies consumable metal 133 before starting
Bottom loaded on metal electrode 130, then the anode of high frequency pulse power supply 111 will be connected with metal electrode 130, by high-frequency impulse
The cathode of power supply 111 is connected with bottom water tank 310.111 frequency of high frequency pulse power supply is set as 20KHz, and stone is used after ready
Electrode ink slugging after the completion of remelting slag melting, the consumable metal 133 of metal electrode 130 is dropped in metal bath 222 and is adjusted
Whole electric current is 9000A, effective voltage 55V.
Embodiment 3
The substance of the present embodiment is with embodiment 2, and the difference lies in as shown in figure 3, first electrode 131 and crystallization
The distance between device axial line 230 is d1, the distance between second electrode 132 and crystallizer axial line 230 are d2, and d1≠d2。
And be that first electrode 131 and second electrode 132 are identical and for R, then d2>d1+ R, so that process of the bottom water tank 310 in rotation
In, first electrode 131 and the electroslag layer 223 of second electrode 132 and liquid carry out relative motion, and first electrode 131 and second
The movement locus of electrode 132 differs, does not also coincide, and electroslag layer is uniformly distributed in so as to promote the inner layer metal of fusing
In 223, the homogenization of inner layer metal distribution is not only increased, and the liquid metals of fusing is filled with electroslag layer 223
The reaction divided.The outside of melting crystallizer 210 is provided with vibration component 340, in the vibration component 340 and melting crystallizer 210
Metal bath 222 be correspondingly arranged, vibration component 340 vibrates melting crystallizer 210 so that metal bath 222 is cold
But during solidifying, crystal grain is refined, so that inner layer metal tissue is finer and close, while is made jointly with pulse current
With obtaining that steel ingot metal ingredient is more uniform, and then improves the quality of steel ingot.Vibration component 340 can be along melting crystallizer 210
Vertical direction moved so that vibration component 340 is corresponding with the metal bath 222 in melting crystallizer 210 always
Setting so that during cooled and solidified, crystal grain is refined metal bath 222, so that the interior tissue of steel ingot is more
Add densification.
The remelting steel grade of the present embodiment be 410 martensitic stain less steels, a diameter of 600mm of crystallizer.Remelting is first incited somebody to action before starting
Consumable metal 133 is installed on the bottom of metal electrode 130, then will be by the anode of high frequency pulse power supply 111 and 130 phase of metal electrode
Even, the cathode of high frequency pulse power supply 111 is connected with bottom water tank 310.111 frequency of high frequency pulse power supply is set as 30KHz, prepares
After using graphite electrode slugging, after the completion of remelting slag melting, the consumable metal 133 of metal electrode 130 is dropped into gold
It is 11500A, effective voltage 60V to belong to adjustment electric current in molten bath 222.
Embodiment 4
For the substance of the present embodiment with embodiment 1, the difference lies in produce composite roll, such as Fig. 4 using the device
Shown, melting crystallizer 210 is the hollow roll 211 for producing the outer layer metal of composite roll, is substituted with hollow roll 211
Crystallizer produces bimetallic composite roll.Composite roll smelting apparatus based on hollow roll as outer layer metal, including arteries and veins
Power supply 111, hollow roll 211, metal electrode 130 and bottom water tank 310 are rushed, the bottom water tank 310 is set to molten hollow roll 211
Bottom, for accommodating metal bath 222 and electroslag layer 223 in hollow roll 211；The insertion of metal electrode 130 is hollow to roll
Inside roller 211, the consumable metal 133 of 130 bottom of metal electrode is inserted into electroslag layer 223, the anode and metal of the pulse power 111
Electrode 130 is connected, and the cathode of the pulse power 111 is connected with bottom water tank 310.Using the hollow roll of composite roll cladding material
211 as melting crystallizer 210, and the metal electrode 130 of inner layer material carries out remelting wherein, realizes having for ectonexine metal
It imitates compound.
The outside of hollow roll 211 is provided with cooling-part 330, cooling-part 330 along hollow roll 211 length side
To setting.Cooling spray 331 is provided on cooling-part 330, cooling spray 331 is used to spray to 211 surface of hollow roll and cool down
Water.The lower part of the bottom water tank 310 of the present embodiment is provided with turntable 320, and turntable 320 is for driving bottom water tank 310 to rotate, bottom
Water tank 310 is connected by brush with the cathode of the pulse power 111.The homogenization of internal layer composition tissue is not only promoted, but also is promoted
Into the production of inner layer metal tissue column crystal.Cladding material is obtained to rotate with metal bath 222, and cladding material and metal
Also relative rotation occurs between molten bath 222, not only promotes the homogenization of internal layer composition tissue, but also promotes inner layer metal group
Knit the production of column crystal；In addition, the rotation of hollow roll 211 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, and then improve the quality of production of composite roll.Lead to during melting
Supercooling component 330 carries out water-spraying control to the outer surface of hollow roll 211.
The present embodiment is based on composite roll method of smelting of the hollow roll as outer layer metal, and smelting apparatus is with hollow roll
211 outer layer metal as composite roll forms electroslag layer 223, metal electrode liquid slag is poured into hollow roll 211
The consumable metal 133 of 130 bottoms is inserted into 223 layers of electroslag layer, then is powered and to be formed electrical circuit progress melting, during melting certainly
Consumption metal 133 melts, refine after enter metal bath 222, the internal layer that 222 cooled and solidified of metal bath forms composite roll is golden
Belong to.It is described in detail below：
Step 1: hollow hollow roll 211 is first installed on bottom water tank 310 by remelting before starting, cooling is then opened
The cooling water of component 330, cooling spray 331 carry out water-spraying control to the outer surface of hollow roll 210, and the flow of cooling water is
30m3/ t, while start slugging outside stove.
Step 2: after the completion of slag melting, liquid slag poured into, electroslag layer 223 is formed in hollow roll 211, then by metal
The consumable metal 133 of 130 bottom of electrode is inserted into 223 layers of electroslag layer, and the anode of the pulse power 111 is connected with metal electrode 130,
The cathode of the pulse power 111 is connected with bottom water tank 310, and the energization of the pulse power 111 forms electrical circuit, the consumable of metal electrode 130
133 remelting of metal obtains composite roll after solidifying again.Wherein the pulse power 111 be high-frequency direct-current electric current, the frequency of the DC current
Rate is 10-30KHz.111 output current=180 of the pulse power~200*DKnotA, wherein DKnotFor crystallizer diameter/cm.The pulse power
111 output voltages=0.5*DKnot+ 27~37V, wherein DKnotFor crystallizer diameter/cm.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.
The outside of hollow roll 211 is provided with vibration component 340, the vibration component 340 and the metal in hollow roll 211
Molten bath 222 is correspondingly arranged, and vibration component 340 vibrates hollow roll 211 so that metal bath 222 is in cooled and solidified
In the process, crystal grain is refined so that inner layer metal tissue is finer and close, while with pulse current collective effect, obtain in
Layer metal ingredient is more uniform, realizes the effective compound of ectonexine metal, and then improve the quality of composite roll.Vibration section
Part 340 can be moved along the vertical direction of hollow roll 211 so that vibration component 340 always with hollow roll 211
Interior metal bath 222 is correspondingly arranged so that during cooled and solidified, crystal grain is refined metal bath 222, so as to make
It is finer and close to obtain inner layer metal tissue.
Embodiment 5
For the substance of the present embodiment with embodiment 4, the difference lies in produce composite roll, such as Fig. 6 using the device
It is shown, a kind of composite roll smelting apparatus using bipolar electrode of the present embodiment, including the pulse power 111, hollow roll 211,
Metal electrode 130 and bottom water tank 310, bottom water tank 310 are set to the bottom of hollow roll 211, are used to accommodate in hollow roll 211
Have a metal bath 222 and electroslag layer 223, inside the insertion hollow roll 211 of metal electrode 130,130 bottom of metal electrode from
It consumes metal 133 to be inserted into electroslag layer 223, metal electrode 130 includes first electrode 131 and second electrode 132, first electrode 131
It is connected respectively with 111 positive and negative anodes of the pulse power with second electrode 132.First electrode 131 and second electrode 132 are arranged in parallel, and
First electrode 131, second electrode 132 are parallel with crystallizer axial line 230.
The distance between first electrode 131 and crystallizer axial line 230 are d1, second electrode 132 and crystallizer axial line
The distance between 230 be d2, and d1≠d2.And be that first electrode 131 and second electrode 132 are identical and for R, then d2>d1+ R, so as to
So that bottom water tank 310, during rotation, first electrode 131 and second electrode 132 and the electroslag layer 223 of liquid carry out relatively
Movement, and the movement locus of first electrode 131 and second electrode 132 differs, does not also coincide, so as to promote in fusing
Layer metal is uniformly distributed in electroslag layer 223, not only increases the homogenization of inner layer metal distribution, and cause the liquid of fusing
Body metal occurs adequately to react with electroslag layer 223.
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 smelting apparatus for improving electroslag remelting steel ingot Solidification Quality, it is characterised in that：The pulse power (111), melting knot
Brilliant device (210), metal electrode (130) and bottom water tank (310), the bottom water tank (310) are set to the bottom of melting crystallizer (210)
Portion, melting crystallizer (210) is interior to be used to accommodate metal bath (222) and electroslag layer (223)；The metal electrode (130)
Melting crystallizer (210) inside is inserted into, the consumable metal (133) of metal electrode (130) bottom is inserted into electroslag layer (223), arteries and veins
The anode for rushing power supply (111) is connected with metal electrode (130), and the cathode of the pulse power (111) is connected with bottom water tank (310).
2. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality according to claim 1, it is characterised in that：Institute
The lower part for stating bottom 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 for improving electroslag remelting steel ingot Solidification Quality according to claim 1, it is characterised in that：The arteries and veins
Power supply (111) is rushed as DC current, the frequency of the DC current is 10-30KHz.
4. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality according to claim 1, it is characterised in that：Arteries and veins
Rush power supply (111) output current=(180~200) * DKnotA, wherein DKnotFor crystallizer diameter/cm.
5. a kind of device for improving electroslag remelting steel ingot Solidification Quality according to claim 1, it is characterised in that：Pulse electricity
Source (111) output voltage=0.5*DKnot+ (27~37) V, wherein DKnotFor crystallizer diameter/cm.
It is 6. special according to a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality of claim 1-5 any one of them
Sign is：Supporting mechanism (120) is further included, which includes vertical rack (121) and horizontal stand (122), water
One end of flat stent (122) is slidably mounted on vertical rack (121), and it is remote that metal electrode (130) is installed on horizontal stand (122)
One end from vertical rack (121).
7. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality according to claim 6, it is characterised in that：Electricity
Pole hold assembly (140) is slidably mounted on horizontal stand (122), and metal electrode (130) is by being installed on horizontal stand (122)
On.
8. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality using bipolar electrode, it is characterised in that：The pulse power
(111), melting crystallizer (210), metal electrode (130) and bottom water tank (310), the bottom water tank (310) are set to melting knot
The bottom of brilliant device (210), melting crystallizer (210) is interior to be used to accommodate metal bath (222) and electroslag layer (223)；The gold
The insertion melting crystallizer (210) for belonging to electrode (130) is internal, and the consumable metal (133) of metal electrode (130) bottom is inserted into electroslag
In layer (223), metal electrode (130) includes first electrode (131) and second electrode (132), first electrode (131) and the second electricity
Pole (132) is connected respectively with the pulse power (111) positive and negative anodes.
9. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality using bipolar electrode according to claim 8,
It is characterized in that：The distance between first electrode (131) and crystallizer axial line (230) are d1, second electrode (132) and crystallizer
The distance between axial line (230) is d2, and d1≠d2。
10. a kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality using bipolar electrode according to claim 8,
It is characterized in that：First electrode (131) and second electrode (132) are arranged in parallel, and first electrode (131), second electrode (132) and
Roll axial line (230) is parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297543.2A CN108251655A (en) | 2018-04-04 | 2018-04-04 | A kind of smelting apparatus for improving electroslag remelting steel ingot Solidification Quality |
Applications Claiming Priority (1)
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Cited By (4)
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| CN111286624A (en) * | 2020-03-31 | 2020-06-16 | 路蓉 | Electric furnace decomposition device for electroslag smelting |
| CN113667831A (en) * | 2021-08-24 | 2021-11-19 | 安徽工业大学 | Electroslag remelting device and method for refining electroslag ingot solidification structure through dual power supply coupling |
| CN117862439A (en) * | 2024-03-12 | 2024-04-12 | 内蒙古科技大学 | Device and method for inhibiting growth of inclusion in continuous casting crystallizer by pulse current |
| CN117862439B (en) * | 2024-03-12 | 2024-05-17 | 内蒙古科技大学 | Device and method for inhibiting growth of inclusion in continuous casting crystallizer by pulse current |
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| CN113667831A (en) * | 2021-08-24 | 2021-11-19 | 安徽工业大学 | Electroslag remelting device and method for refining electroslag ingot solidification structure through dual power supply coupling |
| CN117862439A (en) * | 2024-03-12 | 2024-04-12 | 内蒙古科技大学 | Device and method for inhibiting growth of inclusion in continuous casting crystallizer by pulse current |
| CN117862439B (en) * | 2024-03-12 | 2024-05-17 | 内蒙古科技大学 | Device and method for inhibiting growth of inclusion in continuous casting crystallizer by pulse current |
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