CN108015245A - A kind of hot base corner crack Hand scarf device and method - Google Patents

A kind of hot base corner crack Hand scarf device and method Download PDF

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Publication number
CN108015245A
CN108015245A CN201711448777.4A CN201711448777A CN108015245A CN 108015245 A CN108015245 A CN 108015245A CN 201711448777 A CN201711448777 A CN 201711448777A CN 108015245 A CN108015245 A CN 108015245A
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arc
strand
cleaning
rifle
axis
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CN108015245B (en
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吴丙恒
唐复平
费鹏
周福鼎
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Angang Steel Co Ltd
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Angang Steel Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12Accessories for subsequent treating or working cast stock in situ

Abstract

The present invention relates to a kind of hot base corner crack Hand scarf device and method, and hot base corner crack Hand scarf device is added between the fan-shaped section and fire of conticaster cut machine;Prepare by preheating, preheating positioning, preheating, cleaning, flue gas trapping and Slag treatment process, cleaning can be carried out at the same time to the corner of strand corner, seamlessly transit it, effectively avoid that " corner weight is clear " region is excessive, the shortcomings that high is lost in iron and steel stock;Meet that the cleaning of different section size strand requires by automatic positioning, meet different cleaning depth requirements by adjusting burner, by adjusting the parameter adaptation pulling rate change that can be situated between;And it can realize that the operation of " key " formula starts automatic liquidation procedures, Hand scarf does not influence continuous casting rhythm.

Description

A kind of hot base corner crack Hand scarf device and method
Technical field
The present invention relates to continuous casting technical field, more particularly to one kind to split suitable for Hand scarf hot-cast base corner corner The hot base corner crack Hand scarf device and method of line.
Background technology
It is usual by the slab of the horizontal such as pipe line steel kind for being restricted, being produced through conticaster of current continuous casting process, corner Can there are crackle, product cannot meet hot sending require, offline can only clear up, then reach the standard grade it is cold give, not only restrict production efficiency, more damage Lose a large amount of thermal energy, increase carbon emission.
The Chinese patent of Application No. 201410816308.3 discloses " a kind of bad corner cleaning plant of plate and cleaning side Method ", the outlet of caster two cold room is arranged on and between fire cuts machine by cleaning plant, including nozzle, burner, medium box, traversing is set Standby, synchronizer, medium box are fixedly connected with burner, nozzle, and medium box, synchronizer are arranged on shifting equipment, are synchronously set Standby to drive medium box, nozzle and burner to be moved along strand moving direction, medium box provides combustion gas for burner;Medium box supplies for nozzle Water.The advantages of technical solution is:The crackle in the strand inner arc side Liang Ge corners such as the pipe line steel suitable for conticaster production is cleared up, Clearing apparatus is arranged on continuous casting machine production line, realizes Hand scarf crackle, does not influence online normal production;It is not take up production week Swivel link, hot sending rate greatly improve, and without manual cleaning, save a large amount of labor services.But it can not realize the clear of 4 corner cracks Reason.
The content of the invention
, can be same to the corner of strand corner the present invention provides a kind of hot base corner crack Hand scarf device and method Shi Jinhang is cleared up, and seamlessly transits it, effectively avoids the shortcomings that " corner is again clear " region is excessive, iron and steel stock loss is high;By certainly Dynamic positioning meets that the cleaning of different section size strand requires, and meets different cleaning depth requirements by adjusting burner, by adjusting The parameter adaptation pulling rate that can be situated between changes;And it can realize that the operation of " key " formula starts automatic liquidation procedures, Hand scarf does not influence Continuous casting rhythm.
In order to achieve the above object, the present invention is realized using following technical scheme:
A kind of hot base corner crack Hand scarf device, is arranged on the fan-shaped section of conticaster and between fire cuts machine, including interior Arc cleaning rifle, outer arc cleaning rifle, side Slag treatment hydraulic giant, inner arc water curtain, outer arc water curtain, clamp, trolley and cart;Cart across Transported in strand above roller-way, 2 trolleies are respectively arranged on cart both sides and can simultaneously be moved back and forth along perpendicular to the direction that strand conveys; 2 clamps, which are respectively arranged on the trolley of both sides, to be used to clamp strand, and clamp drives cart to be servo-actuated with strand after clamping strand;In 2 groups Arc cleaning rifle, 2 groups of outer arc cleaning rifles and 2 groups of side Slag treatment hydraulic giants are each on the trolley of both sides respectively to set 1 group, and wherein inner arc is clear Reason rifle is correspondingly arranged at the interior top of two side corner sections of strand inner arc;Outer arc cleaning rifle is correspondingly arranged at the outside upper of two side corner sections of strand outer arc Side;Side Slag treatment hydraulic giant is correspondingly arranged at the outer top of strand two sides;Inner arc water curtain is 2 groups, is respectively correspondingly arranged in strand fortune Send the both sides of roller-way;Outer arc water curtain is correspondingly arranged at the lower section of strand.
The inner arc cleaning rifle, outer arc cleaning rifle include gun body, nozzle and cooling-water duct, and gun body front end sets nozzle, The center of nozzle sets cleaning eye, and the periphery of cleaning eye sets preheating gate, and cleaning eye is connected with cleaning oxygen channel, preheating gate with it is flammable Gas and the connection of preheated oxygen pipeline;The periphery of gun body sets cooling-water duct, the exterior cooling water pipeline of cooling-water duct connection.
Cylindrical spout is set on the side Slag treatment hydraulic giant.
The inner arc water curtain and outer arc water curtain are made of multiple fan nozzles being arranged side by side.
A kind of hot base corner crack Hand scarf method based on described device, suitable for the angle of Hand scarf strand corner Portion's crackle;Specifically comprise the following steps:
1) hot base corner crack Hand scarf device positioning;
1.1 determine positioning datum;
1.1.1 three-dimensional coordinate:With the fixed plate plane of inner arc cleaning rifle and strand upper surface, respective side strand side on trolley The joint in face is origin O, and origin is positive for X-axis along strand upper surface and the inverse casting stream direction of side intersecting lens, and origin is along strand Upper surface is simultaneously perpendicularly oriented to strand center position as Y-axis forward direction, and origin is positive for Z axis perpendicular to strand upper surface upward direction, Establish coordinate system;
1.1.2 three axis:If the axis of inner arc cleaning rifle burner be a, the axis that outer arc clears up rifle burner is b, side The water nozzle axis of Slag treatment hydraulic giant is c;
1.1.3 three centers:If the burner end face center of inner arc cleaning rifle is O1, outer arc clears up the burner end face center of rifle For O3, the water nozzle end face center of side Slag treatment hydraulic giant is O5;
1.2 devices position:
1.2.1 inner arc cleaning rifle position is in XZ plane first quartiles, and axis a and X-axis forward direction angle are 25 °~45 °, with XY Face angle is 15 °~35 °;
1.2.2 outer arc cleaning rifle position is in XZ plane first quartiles, and axis b and X-axis forward direction angle are 25 °~45 °, with XZ Face angle is 15 °~35 °;
1.2.3 the axis c of side Slag treatment hydraulic giant is parallel to Y-axis, hydraulic pressure >=120bar;
1.2.4 2 groups of inner arc cleaning rifles, outer arc cleaning rifle and side Slag treatment hydraulic giant are determined by casting flow center line mirror image respectively Position;
1.2.5 inner arc water curtain is located at strand and transports on the outside of roller-way, is 20 °~40 ° with XZ faces angle, 2 groups of inner arc water curtains are pressed Cast the positioning of flow center line mirror image, hydraulic pressure >=120bar;
1.2.6 outer arc water curtain is located at cart lower section, the inner side of inner arc water curtain, parallel with XY faces, with strand following table interplanar distance Not less than 100mm, hydraulic pressure >=120bar;
2) preheating prepares:Inner arc water curtain and outer arc water curtain water flowing, inner arc cleaning rifle and outer arc cleaning rifle igniting;
3) preheating positioning:Trolley is moved to strand center, and clamp is automatically stopped after being respectively held against two sides of strand, inner arc Rifle, outer arc cleaning rifle and side Slag treatment hydraulic giant is cleared up to align by predeterminated position automatic and accurate;
4) preheat:Preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle, outer arc cleaning rifle start to preheat, cart and strand Synchronizing moving, ensures that hot spot is constant;By preheating, molten bath is formed in strand corner, warm terminates;
5) clear up:After molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp unclamps, and cart is no longer with strand Mobile, in strand moving process, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process;Because respectively cleaning rifle and X, Y, Z axis has an angle respectively, it corresponds to the part in molten bath and is able to retain along X-axis positive direction and keeps continuous, another portion Divide to enter along cleaning gun axis line direction disengaging strand and correspond to water curtain;
6) flue gas trapping and Slag treatment:The slag of inner arc cleaning rifle cleaning enters inner arc water curtain, enters slag runner with granulation water; The slag of outer arc cleaning rifle cleaning enters outer arc water curtain, enters slag runner with granulation water;The water column of side Slag treatment hydraulic giant is along strand Side sprays downwards, and the slag that strand side is remained in scale removal process is smashed and enters lower section slag runner.
Compared with prior art, the beneficial effects of the invention are as follows:
1) conventional " corner weight is clear " using scarfing is different from, corner is really cleared up, seamlessly transits, can be effective Avoid the shortcomings that " corner is again clear " region is excessive, iron and steel stock loss is high;
2) replace traditional " strand clamping and conveying device " using continuous casting machine fan-shaped segment and pulling-straightening equipment, utilize casting machine Slag treatment system System is used as " cleaning slag disposal system ", saves great deal of investment, is not take up land resource;
3) meet that the cleaning of different section size strand requires by automatic positioning, meet that different cleanings are deep by adjusting burner Degree requires, by adjusting the parameter coordination pulling rate change that can be situated between;
4) the preparatory function module in conticaster automatic control system, starts automatic cleaning journey using the operation of " key " formula Sequence, is not take up extra human resources;
5) can be achieved to be not take up the production time is transformed, is not shut down debugging, does not influence existing rhythm of production;
6) strand does not influence any process procedure, saves the costs such as mass energy without offline, direct hot sending.
Brief description of the drawings
Fig. 1 is the structure diagram of hot base corner crack Hand scarf device of the present invention.
Fig. 2 is the positioning relation schematic diagram of hot base corner crack Hand scarf device of the present invention.
In figure:1st, 2. inner arcs cleaning rifle 3,4. outer arcs cleaning rifle 5,6. side Slag treatment hydraulic giants 7,8. inner arc water curtains 9, 10. clamp 11,12. trolley, 13. outer arc water curtain, 14. cart, 15. strand
Embodiment
The embodiment of the present invention is described further below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of hot base corner crack Hand scarf device of the present invention, the fan-shaped section of conticaster is arranged on And between fire cuts machine, including inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4, side Slag treatment hydraulic giant 5,6, inner arc water curtain 7,8;Outside Arc water curtain 13;Clamp 9,10, trolley 11,12 and cart 14;Cart 14 is across strand and transports above roller-way, 2 trolleies 11,12 Being respectively arranged on 14 both sides of cart can simultaneously move back and forth along perpendicular to the direction that strand 15 conveys;2 clamps 9,10 are respectively arranged on two It is used to clamp strand 15 on side trolley 11,12, clamp 9,10 drives cart 14 servo-actuated with strand 15 after clamping strand 15;In 2 groups Arc clears up rifle 1,2, and 2 groups of outer arc cleaning 3,4 and 2 groups of side Slag treatment hydraulic giants 5,6 of rifle are respectively set on both sides trolley 11,12 respectively 1 group, wherein inner arc cleaning rifle 1,2 is correspondingly arranged at the interior top of 15 inner arc of strand, two side corner sections;Outer arc cleaning rifle 3,4 is correspondingly arranged at The outer top of 15 outer arc of strand, two side corner sections;Side Slag treatment hydraulic giant 5,6 is correspondingly arranged at the outer top of 15 two sides of strand;Inner arc Water curtain 7,8 is 2 groups, is respectively correspondingly arranged in the both sides that strand transports roller-way;Outer arc water curtain 13 is correspondingly arranged at the lower section of strand 15.
The inner arc clears up rifle 1,2, and outer arc cleaning rifle 3,4 includes gun body, nozzle and cooling-water duct, and gun body front end is set Nozzle, the center of nozzle set cleaning eye, and the periphery of cleaning eye sets preheating gate, and cleaning eye is connected with cleaning oxygen channel, preheating gate It is connected with fuel gas and preheated oxygen pipeline;The periphery of gun body sets cooling-water duct, the exterior cooling water of cooling-water duct connection Pipeline.
Cylindrical spout is set on the side Slag treatment hydraulic giant 5,6.
The inner arc water curtain 7,8 and outer arc water curtain 13 are made of multiple fan nozzles being arranged side by side.
A kind of hot base corner crack Hand scarf method based on device of the present invention, suitable for Hand scarf strand four The corner crack at angle;Specifically comprise the following steps:
1) hot base corner crack Hand scarf device positioning;
1.1 determine positioning datum (as shown in Figure 2);
1.1.1 three-dimensional coordinate:With fixed on trolley 11,12 inner arc cleaning rifle 15 upper surface of fixed plate plane and strand, The joint of 15 side of respective side strand is origin O, and origin is X-axis along 15 upper surface of strand and the inverse casting stream direction of side intersecting lens Forward direction, origin is along 15 upper surface of strand and is perpendicularly oriented to 15 center position of strand as Y-axis forward direction, and origin is perpendicular to 15 upper table of strand Direction is positive for Z axis upwardly, establishes coordinate system;
1.1.2 three axis:If inner arc cleaning rifle 1, the axis of 2 burners are a, outer arc cleaning rifle 3, the axis of 4 burners are B, the water nozzle axis of side Slag treatment hydraulic giant 5,6 is c;
1.1.3 three centers:If the burner end face center of inner arc cleaning rifle 1,2 is O1, the burner end of outer arc cleaning rifle 3,4 Face center is O3, the water nozzle end face center of side Slag treatment hydraulic giant 5,6 is O5
1.2 devices position:
1.2.1 inner arc cleaning rifle 1,2 is located in XZ plane first quartiles, and axis a and X-axis forward direction angle are 25 °~45 °, It it is 15 °~35 ° with XY faces angle;
1.2.2 outer arc cleaning rifle 3,4 is located in XZ plane first quartiles, and axis b and X-axis forward direction angle are 25 °~45 °, It it is 15 °~35 ° with XZ faces angle;
1.2.3 the axis c of side Slag treatment hydraulic giant 5,6 is parallel to Y-axis, hydraulic pressure >=120bar;
1.2.4 2 groups of inner arc cleaning rifles 1,2, outer arc cleaning rifle 3,4 and side Slag treatment hydraulic giant 5,6 are respectively by casting flow center Line mirror image positions;
1.2.5 inner arc water curtain 7,8 is located at strand and transports on the outside of roller-way, is 20 °~40 ° with XZ faces angle, 2 groups of inner arc water curtains 7th, 8 by the mirror image positioning of casting flow center line, hydraulic pressure >=120bar;
1.2.6 outer arc water curtain 13 is located at the lower section of cart 14, the inner side of inner arc water curtain 7,8, parallel with XY faces, and under strand 15 Surface spacing is not less than 100mm, hydraulic pressure >=120bar;
2) preheating prepares:13 water flowing of inner arc water curtain 7,8 and outer arc water curtain, inner arc cleaning rifle 1,2 and outer arc 3,4 points of rifle of cleaning Fire;
3) preheating positioning:Trolley 11,12 is moved to 15 center of strand, after clamp 9,10 is respectively held against 15 two sides of strand It is automatically stopped, inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4 and side Slag treatment hydraulic giant 5,6 press predeterminated position automatic and accurate pair Position;
4) preheat:Preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4 starts to preheat, cart 14 is constant with 15 synchronizing moving of strand, guarantee hot spot;By preheating, molten bath is formed in 15 corner of strand, warm terminates;
5) clear up:After molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp 9,10 unclamps, and cart 14 is no longer Moved with strand 15, in 15 moving process of strand, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process;It is because each Cleaning rifle 1-4 has an angle respectively with X, Y, Z axis, it corresponds to the part in molten bath and is able to retain and protects along X-axis positive direction Hold continuously, another part enters along cleaning rifle 1-4 axis direction disengaging strands 15 corresponds to water curtain;
6) flue gas trapping and Slag treatment:Inner arc cleaning rifle 1,2 clear up slag enter inner arc water curtain 7,8, be granulated water into Enter slag runner;The slag that outer arc cleaning rifle 3,4 is cleared up enters outer arc water curtain 13, enters slag runner with granulation water;Side Slag treatment hydraulic giant 5th, 6 water column sprays downwards along 15 side of strand, under the slag that 15 side of strand is remained in scale removal process is smashed and entered Square slag runner.
On the basis of clamp 9,10 clamping faces, realize that inner arc clears up rifle 1,2, outer arc cleaning rifle 3,4 using three-dimensional template And side 5,6 fast positioning in three dimensions of Slag treatment hydraulic giant, i.e., " three-dimensional setting ";Clamp 9,10 clamps 15 side of strand Determine strand edge position afterwards, inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4, side Slag treatment hydraulic giant 5,6 and strand 15 Relative position is automatically performed by " three-dimensional setting ".
Embedded preparation, startup, preheating, cleaning, clear/accident, heat are changed and adjusted and is wide 7 big in conticaster automatic operation system Module, under " casting " pattern of conticaster, a key operation starts " starting module ";When 15 head of strand reaches pre- thermal potential, " warm-up block " is automatically gone to, by automatic positioning and warm, forms molten bath;Then automatically go to " cleaning modul ", it is right Strand 15 is implemented continuously to clear up;When conticaster enters " tail mold formula " or manual intervention state, " clear/accident " module opens It is dynamic, it is transferred to automatically " preparation module ", waits a key operation enabled instruction.
The present invention utilizes the basic principle of " scafing ", and developing one kind online while can clear up four corners of strand The method of crackle, the Hand scarf method can overcome the disadvantages that the deficiency of continuous casting process, realize high-quality slab hot delivery and hot charging, fill up continuous casting Hot delivery and hot charging technological gap;Strand there are corner defect greatly improves production efficiency, avoids big calorimetric without offline cleaning The loss of energy, reduce carbon emission.
The technological principle that the present invention applies is as follows:
1) preheat:Under the calcination of fuel gas (referred to as " preheating "), metal can be melted gradually in strand corner, form one Divide molten metal (referred to as " molten bath ").
Reaction principle:C3H4+5O2→3CO2+4H2O;
2) clear up:The heat produced using oxidation reaction clears up metal material (strand), and molten bath is in purge oxygen Promotion under move forwards so that strand corner crack is cleaned out.
Reaction principle:Fe+1/2O2→FeO+64kcal;
2Fe+3/2O2→Fe2O3+195kcal;
3Fe+2O2→Fe3O4+267kcal;
Conventional cleaning method:Online slab scafing equipment is typically disposed on the runout table after fire cuts machine, comprising Centralising device, clamping device, driving device and cleaning equipment etc..
Hot base corner crack Hand scarf device of the present invention is arranged on fan-shaped section and between fire cuts machine, does not influence casting machine Any function." fan-shaped section " clears up " clamping device " of system, " pulling-straightening equipment " equivalent to conventional plate blank equivalent to conventional plate blank " driving device " of cleaning system, cleaning plant automatic centering, sets centralising device without extra, saves a large amount of equipment investments.
The function of each component is as follows in hot base corner crack Hand scarf device of the present invention:
1) inner arc cleaning rifle 1,2:Respectively set one group in 15 both sides of strand along 15 width of strand, and be fixed on trolley 11, On 12, during prune job, respectively positioned at the interior top of 15 inner arc of strand, two side corner sections.Fuel gas is pressed with preheating oxygen in gun body Ratio mixes, and sprays, lights through the preheating gate of burner periphery and realize pre- hot function, forms predetermined molten bath;Oxygen is cleared up through gun body Intermediate conduit is sprayed by cleaning eye among burner, and oxidation reaction occurs with molten bath, realizes clearing function;Inner arc cleaning rifle 1,2 has There is Forced water cooling function.
2) outer arc cleaning rifle 3,4:One group is respectively set in 15 both sides of strand along 15 width of strand, is fixed on trolley 11,12 On, during prune job, respectively positioned at the outer top of 15 outer arc of strand, two side corner sections.Fuel gas with preheating oxygen in gun body press than Example mixing, sprays through the preheating gate of burner periphery, lights and realize pre- hot function, form predetermined molten bath;Oxygen is cleared up through in gun body Between pipeline sprayed by cleaning eye among burner, oxidation reaction occurs with molten bath, realizes clearing function;Outer arc cleaning rifle 3,4 has Forced water cooling function.
3) side Slag treatment hydraulic giant 5,6:One group is respectively set in 15 both sides of strand along 15 width of strand, is fixed on trolley 11st, on 12, during prune job, respectively positioned at the outer top of 15 two sides of strand, its water nozzle sprays water jets under high pressure, by 15 side of strand The remaining slag in face is destroyed, smashed, and is sent into slag runner.
4) inner arc water curtain 7,8:It is respectively arranged on strand and transports roller-way both sides, it sprays high pressure water by combining covering of the fan nozzle, The slag (Fe oxides) that inner arc cleaning rifle 1,2 is blown out is caught, and smashes, be sent into slag runner.
5) outer arc water curtain 13:Positioned at the lower section of strand 15, it sprays high pressure water by combining covering of the fan nozzle, catches outer arc cleaning The slag (Fe oxides) that rifle 3,4 is blown out, and smash, be sent into slag runner.
6) clamp 9,10:One group is respectively set in 15 both sides of strand along 15 width of strand, is fixed on trolley 11,12, together When action clamp the two sides of strand 15, realization device positions and is servo-actuated clamping function.
7) trolley 11,12:One is respectively set in 15 both sides of strand along 15 width of strand, it is to drive inner arc cleaning that it, which is acted on, Rifle 1,2, outer arc are cleared up rifle 3,4, side Slag treatment hydraulic giant 5,6, clamp 9,10 etc. and are moved back and forth perpendicular to casting stream direction.
8) cart 14:For driving trolley 11,12 etc. to be moved back and forth along casting stream direction.
A kind of technical characterstic of hot base corner crack Hand scarf method of the present invention is as follows:
1) three-dimensional setting:By three-dimensional template, it can be achieved that inner arc clears up rifle 1,2, outer arc on the basis of clamp clamping face Rifle 3,4 is cleared up, side Slag treatment hydraulic giant 5,6 once completes positioning setting in three dimensions;
2) float and position:15 side of strand is clamped by clamp 9,10 and determines strand edge position, inner arc clears up rifle 1,2, The relative position of outer arc cleaning rifle 3,4, side Slag treatment hydraulic giant 5,6 and strand 15 is automatically performed by " three-dimensional setting ".It is so-called " floating Dynamic positioning " refers to be accurately positioned with hot base actual outer dimensions, can be eliminated difference and be poured time strand center line and shape deviation A kind of localization method of caused influence.
3) synchronous preheating:Strand 15 is clamped by clamp 9,10, cart 14 is opposite with 15 synchronizing moving of strand, preheating lance mouth 15 position of strand is fixed, so that molten bath is smoothly formed.
4) intelligence cleaning:Oxygen automatic adjustment is cleared up, is suitable for different casting;Cleaning, pre- hot function automatically switch, and are suitable for Heat changes the states such as Zhong Bao, on-line width adjustment.
A kind of hot base corner crack Hand scarf method of the present invention is as follows in the technical characterstic for automatically controlling aspect:
1) function modoularization:Changed comprising preparation, startup, preheating, cleaning, clear/accident and heat, adjust wide etc. 7 big function moulds Block;
2) operating in a key:Under conticaster " casting " pattern, a key operation starts " starting module ";When strand head is arrived During up to pre- thermal potential, " warm-up block " is transferred to automatically, by automatic positioning and calcination process, forms molten bath;Then it is transferred to automatically " clear Manage module ", implement continuous cleaning to hot base;It is " clear when conticaster is transferred to " tail mold formula " or manual intervention (clear or emergency stop) Machine/accident " starts, and is transferred to automatically " preparation module ", waits one-key start instruction.
3) intelligentized control method:Cleaning oxygen presses model automatic mixing with pulling rate, without manual entry;Cleaning and heat change, adjust width Etc. module automatic conversion, without manual intervention.
Following embodiments are implemented under premised on technical solution of the present invention, give detailed embodiment and tool The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor is such as without spy in following embodiments It is conventional method not mentionlet alone bright.
【Embodiment】
In the present embodiment, online corner crack cleaning is carried out to the strand 15 that thickness is 200mm (width is unlimited), step is such as Under:
1) hot base corner crack Hand scarf device is added between the fan-shaped section and fire of conticaster cut machine;
2) hot base corner crack Hand scarf device positioning;
2.1 determine positioning datum;
2.1.1 three-dimensional coordinate:With fixed on trolley 11,12 inner arc cleaning rifle 1 15 upper surface of fixed plate plane and strand, The joint of 15 side of respective side strand is origin O, and origin is X-axis along 15 upper surface of strand and the inverse casting stream direction of side intersecting lens Forward direction, origin is along 15 upper surface of strand and is perpendicularly oriented to 15 center position of strand as Y-axis forward direction, and origin is perpendicular to 15 upper table of strand Direction is positive for Z axis upwardly, establishes coordinate system;
2.1.2 three axis:If inner arc cleaning rifle 1, the axis of 2 burners are a, outer arc cleaning rifle 3, the axis of 4 burners are B, the water nozzle axis of side Slag treatment hydraulic giant 5,6 is c;
2.1.3 three centers:If the burner end face center of inner arc cleaning rifle 1,2 is O1, the burner end of outer arc cleaning rifle 3,4 Face center is O3, the water nozzle end face center of side Slag treatment hydraulic giant 5,6 is O5
2.2 devices position:
2.2.1 inner arc cleaning rifle 1,2 is located in XZ plane first quartiles, and axis a and X-axis forward direction angle are 35 °, with XY faces Angle is 25 °;O1Coordinate is (80,35,22).
2.2.2 outer arc cleaning rifle 3,4 is located in XZ plane first quartiles, and axis b and X-axis forward direction angle are 35 °, with XZ faces Angle is 25 °;O3Coordinate is (40, -22, -165).
2.2.3 the axis c of side Slag treatment hydraulic giant 5,6 is parallel to Y-axis, O5Coordinate is (55, -2.5,3), hydraulic pressure >= 120bar (water nozzle internal diameter is 4mm);
2.2.4 2 groups of inner arc cleaning rifles 1,2, outer arc cleaning rifle 3,4 and side Slag treatment hydraulic giant 5,6 are respectively by casting flow center Line mirror image positions;
2.2.5 inner arc water curtain 7,8 is located at strand and transports on the outside of roller-way at 200mm, is 30 ° with XZ faces angle, 2 groups of inner arc water Curtain 7,8 is by the mirror image positioning of casting flow center line, hydraulic pressure >=120bar;
2.2.6 outer arc water curtain 13 is located at the lower section of cart 14, the inner side of inner arc water curtain 7,8, parallel with XY faces, and under strand 15 Surface spacing is 100mm, hydraulic pressure >=120bar;
3) preheating prepares:13 water flowing of inner arc water curtain 7,8 and outer arc water curtain, inner arc cleaning rifle 1,2 and outer arc 3,4 points of rifle of cleaning Fire;
4) preheating positioning:Trolley 11,12 is moved to 15 center of strand, after clamp 9,10 is respectively held against 15 two sides of strand It is automatically stopped, inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4 and side Slag treatment hydraulic giant 5,6 press predeterminated position automatic and accurate pair Position;
5) preheat:Preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle 1,2, outer arc cleaning rifle 3,4 start to preheat, cart 14 is constant with 15 synchronizing moving of strand, guarantee hot spot;Propane pressure >=1.0bar, oxygen pressure >=5.0bar, preheats 18s, Molten bath is formed in 15 corner of strand, warm terminates;
6) clear up:After molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp 9,10 unclamps, and cart 14 is no longer Moved with strand 15, in 15 moving process of strand, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process;It is because each Cleaning rifle 1,4 has an angle respectively with X, Y, Z axis, it corresponds to the part in molten bath and is able to retain and protects along X-axis positive direction Hold continuously, another part enters along cleaning rifle 1-4 axis direction disengaging strands corresponds to water curtain;Oxygen pressure >=10.0bar;
7) flue gas trapping and Slag treatment:Inner arc cleaning rifle 1,2 clear up slag enter inner arc water curtain 7,8, be granulated water into Enter slag runner;The slag that outer arc cleaning rifle 3,4 is cleared up enters outer arc water curtain 13, enters slag runner with granulation water;Side Slag treatment hydraulic giant 5th, 6 water column sprays downwards along 15 side of strand, under the slag that 15 side of strand is remained in scale removal process is smashed and entered Square slag runner.
Strand corner crack through cleaning is all removed, and is realized and seamlessly transitted.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (16)

  1. A kind of 1. hot base corner crack Hand scarf device, it is characterised in that be arranged on the fan-shaped section of conticaster and fire cut machine it Between, including inner arc cleaning rifle, outer arc cleaning rifle, side Slag treatment hydraulic giant, inner arc water curtain, outer arc water curtain, clamp, trolley and big Car;Cart is across strand and transports above roller-way, and 2 trolleies are respectively arranged on cart both sides simultaneously can be along perpendicular to the side that strand conveys To reciprocating movement;2 clamps, which are respectively arranged on the trolley of both sides, to be used to clamp strand, and clamp drives cart and strand after clamping strand It is servo-actuated;2 groups of inner arc cleaning rifles, 2 groups of outer arc cleaning rifles and 2 groups of side Slag treatment hydraulic giants are each on the trolley of both sides respectively to set 1 group, Wherein inner arc cleaning rifle is correspondingly arranged at the interior top of two side corner sections of strand inner arc;Outer arc cleaning rifle is correspondingly arranged at strand outer arc both sides The outer top in corner;Side Slag treatment hydraulic giant is correspondingly arranged at the outer top of strand two sides;Inner arc water curtain is 2 groups, is corresponded to respectively The both sides of roller-way are transported arranged on strand;Outer arc water curtain is correspondingly arranged at the lower section of strand.
  2. A kind of 2. hot base corner crack Hand scarf device according to claim 1, it is characterised in that the inner arc cleaning Rifle, outer arc cleaning rifle include gun body, nozzle and cooling-water duct, and gun body front end sets nozzle, and the center of nozzle sets cleaning eye, clearly The periphery in reason hole sets preheating gate, and cleaning eye is connected with cleaning oxygen channel, and preheating gate connects with fuel gas and preheated oxygen pipeline Connect;The periphery of gun body sets cooling-water duct, the exterior cooling water pipeline of cooling-water duct connection.
  3. 3. a kind of hot base corner crack Hand scarf device according to claim 1, it is characterised in that at the side slag Cylindrical spout is set on reason hydraulic giant.
  4. A kind of 4. hot base corner crack Hand scarf device according to claim 1, it is characterised in that the inner arc water curtain It is made of with outer arc water curtain multiple fan nozzles being arranged side by side.
  5. A kind of 5. hot base corner crack Hand scarf method based on claim 1 described device, suitable for Hand scarf strand The corner crack of corner;It is characterized in that, specifically comprise the following steps:
    1) hot base corner crack Hand scarf device positioning;
    1.1 determine positioning datum;
    1.1.1 three-dimensional coordinate:With fixed plate plane and the strand upper surface of inner arc cleaning rifle on trolley, respective side strand side Joint is origin O, and origin is positive for X-axis along strand upper surface and the inverse casting stream direction of side intersecting lens, and origin is along strand upper table Face is simultaneously perpendicularly oriented to strand center position as Y-axis forward direction, and origin is positive for Z axis perpendicular to strand upper surface upward direction, establishes Coordinate system;
    1.1.2 three axis:If the axis of inner arc cleaning rifle burner be a, the axis that outer arc clears up rifle burner is b, at the slag of side The water nozzle axis for managing hydraulic giant is c;
    1.1.3 three centers:If the burner end face center of inner arc cleaning rifle is O1, the burner end face center of outer arc cleaning rifle is O3, The water nozzle end face center of side Slag treatment hydraulic giant is O5
    1.2 devices position:
    1.2.1 for inner arc cleaning rifle position in XZ plane first quartiles, axis a and X-axis forward direction angle are 25 °~45 °, are pressed from both sides with XY faces Angle is 15 °~35 °;
    1.2.2 for outer arc cleaning rifle position in XZ plane first quartiles, axis b and X-axis forward direction angle are 25 °~45 °, are pressed from both sides with XZ faces Angle is 15 °~35 °;
    1.2.3 the axis c of side Slag treatment hydraulic giant is parallel to Y-axis, hydraulic pressure >=120bar;
    1.2.4 2 groups of inner arc cleaning rifles, outer arc cleaning rifle and side Slag treatment hydraulic giant are respectively by the mirror image positioning of casting flow center line;
    1.2.5 inner arc water curtain is located at strand and transports on the outside of roller-way, is 20 °~40 ° with XZ faces angle, 2 groups of inner arc water curtains are flowed by casting Center line mirror image positions, hydraulic pressure >=120bar;
    1.2.6 outer arc water curtain is located at cart lower section, the inner side of inner arc water curtain, parallel with XY faces, not small with strand following table interplanar distance In 100mm, hydraulic pressure >=120bar;
    2) preheating prepares:Inner arc water curtain and outer arc water curtain water flowing, inner arc cleaning rifle and outer arc cleaning rifle igniting;
    3) preheating positioning:Trolley is moved to strand center, and clamp is automatically stopped after being respectively held against two sides of strand, inner arc cleaning Rifle, outer arc cleaning rifle and side Slag treatment hydraulic giant are aligned by predeterminated position automatic and accurate;
    4) preheat:Preheated fuel gas and preheating oxygen valve are opened, and inner arc cleaning rifle, outer arc cleaning rifle start to preheat, and cart is synchronous with strand It is mobile, ensure that hot spot is constant;By preheating, molten bath is formed in strand corner, warm terminates;
    5) clear up:After molten bath is formed, cleaning oxygen valve is pressed default aperture and is opened, and clamp unclamps, and cart is no longer moved with strand, In strand moving process, molten bath does relative motion with cleaning oxygen, is continuously finished scale removal process;Because respectively cleaning rifle and X, Y, Z axis There is an angle respectively, it corresponds to the part in molten bath and is able to retain along X-axis positive direction and keeps continuous, and another part is along clearly Manage gun axis line direction and depart from strand into corresponding water curtain;
    6) flue gas trapping and Slag treatment:The slag of inner arc cleaning rifle cleaning enters inner arc water curtain, enters slag runner with granulation water;Outer arc The slag of cleaning rifle cleaning enters outer arc water curtain, enters slag runner with granulation water;The water column of side Slag treatment hydraulic giant is along strand side Spray downwards, the slag that strand side is remained in scale removal process is smashed and enters lower section slag runner.
CN201711448777.4A 2017-12-27 2017-12-27 A kind of hot base corner crack Hand scarf device and method Active CN108015245B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109909468A (en) * 2019-03-06 2019-06-21 鞍钢股份有限公司 A kind of positioning device and method for the cleaning of slab corner

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201168773Y (en) * 2007-12-18 2008-12-24 鞍钢股份有限公司 Slab continuous casting online corner cleaning apparatus
CN201960245U (en) * 2010-07-31 2011-09-07 姚明 Flame-type corner cleaning machine
CN102717169A (en) * 2012-07-13 2012-10-10 上海东震冶金工程技术有限公司 Automatic continuous casting billet flame cleaning device and operation method thereof
CN105772667A (en) * 2014-12-23 2016-07-20 鞍钢股份有限公司 Plate blank corner clearing device and method
CN106424623A (en) * 2016-10-21 2017-02-22 东北大学 Device and method for cleaning continuous casting slab through lateral-frontal sweeping
CN207756865U (en) * 2017-12-27 2018-08-24 鞍钢股份有限公司 A kind of hot base corner crack Hand scarf device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201168773Y (en) * 2007-12-18 2008-12-24 鞍钢股份有限公司 Slab continuous casting online corner cleaning apparatus
CN201960245U (en) * 2010-07-31 2011-09-07 姚明 Flame-type corner cleaning machine
CN102717169A (en) * 2012-07-13 2012-10-10 上海东震冶金工程技术有限公司 Automatic continuous casting billet flame cleaning device and operation method thereof
CN105772667A (en) * 2014-12-23 2016-07-20 鞍钢股份有限公司 Plate blank corner clearing device and method
CN106424623A (en) * 2016-10-21 2017-02-22 东北大学 Device and method for cleaning continuous casting slab through lateral-frontal sweeping
CN207756865U (en) * 2017-12-27 2018-08-24 鞍钢股份有限公司 A kind of hot base corner crack Hand scarf device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109909468A (en) * 2019-03-06 2019-06-21 鞍钢股份有限公司 A kind of positioning device and method for the cleaning of slab corner

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