CN117600423A - Continuous casting device and method for molten steel containing titanium alloy - Google Patents
Continuous casting device and method for molten steel containing titanium alloy Download PDFInfo
- Publication number
- CN117600423A CN117600423A CN202311677967.9A CN202311677967A CN117600423A CN 117600423 A CN117600423 A CN 117600423A CN 202311677967 A CN202311677967 A CN 202311677967A CN 117600423 A CN117600423 A CN 117600423A
- Authority
- CN
- China
- Prior art keywords
- tundish
- molten steel
- continuous casting
- induction coil
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 133
- 239000010959 steel Substances 0.000 title claims abstract description 133
- 238000009749 continuous casting Methods 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910001069 Ti alloy Inorganic materials 0.000 title abstract description 6
- 230000006698 induction Effects 0.000 claims abstract description 49
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010936 titanium Substances 0.000 claims abstract description 34
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 34
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000009423 ventilation Methods 0.000 claims abstract description 25
- 229910052786 argon Inorganic materials 0.000 claims abstract description 16
- 230000007246 mechanism Effects 0.000 claims abstract description 8
- 230000000979 retarding effect Effects 0.000 claims abstract 4
- 230000005540 biological transmission Effects 0.000 claims description 16
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 13
- 230000000712 assembly Effects 0.000 claims description 9
- 238000000429 assembly Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 235000009566 rice Nutrition 0.000 claims description 3
- 230000017105 transposition Effects 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 7
- 239000000956 alloy Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/103—Distributing the molten metal, e.g. using runners, floats, distributors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention relates to the technical field of continuous casting pouring, in particular to a continuous casting pouring device and method for molten steel containing titanium alloy, comprising a steel ladle, a tundish and a workbench, wherein a weight plate is rotatably arranged on the workbench, two steel ladle positions for placing the steel ladle are arranged on the weight plate, the bottom of the workbench is fixedly connected with a long water gap of an induction coil communicated with the steel ladle, a ventilation sleeve is fixedly connected on the tundish, a ventilation stopper is inserted on the ventilation sleeve, a tank body for introducing argon is arranged on the outer side of the tundish, an induction coil immersed water gap is arranged at the bottom of the tundish and used for introducing molten steel into a continuous casting crystallizer, and a flow retarding mechanism for retarding the falling impact force of the molten steel is arranged at the bottom of the tundish. According to the invention, argon is injected into the ventilation stopper rod, so that titanium-containing steel with poor fluidity cannot be blocked at the tundish nozzle, and after molten steel flows into the tundish nozzle, an induction magnetic field is generated in the immersed nozzle of the induction coil, so that molten steel cannot be solidified before entering the crystallizer.
Description
Technical Field
The invention relates to the technical field of continuous casting, in particular to a continuous casting device and method for molten steel containing titanium alloy.
Background
The continuous casting technique is a technique of continuously cooling and solidifying a molten metal into a slab on a continuous casting machine. The continuous casting technology has the advantages of high efficiency, energy saving, low cost and the like, and is widely applied to the ferrous metallurgy industry. Generally speaking, the content of titanium in the molten steel is more than 0.025%, titanium is considered as an alloy element in the molten steel, the content of titanium in the molten steel is slowly increased, the viscosity of the molten steel is changed, and the radius of titanium atoms is larger than that of iron atoms, so that the free space of an iron solution is limited, the viscosity of the molten steel is increased, and the fluidity is deteriorated. At present, a continuous casting machine can basically and smoothly pour molten steel with stronger fluidity, but is difficult to pour in continuous casting of titanium-containing molten steel with poorer fluidity, and when molten steel flows into a long nozzle, a tundish nozzle or a submerged nozzle under a ladle, the molten steel is coagulated due to poorer fluidity and cannot be poured smoothly.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a continuous casting device and a continuous casting method for titanium-containing alloy molten steel, which have the advantages that the molten steel can not be solidified before entering a crystallizer, and the molten steel can enter the continuous casting crystallizer to be cooled into a blank, so that the problems that the titanium-containing molten steel with poor fluidity is condensed and cannot be smoothly cast due to the poor fluidity of the molten steel are solved.
In order to solve the technical problems, the invention provides the following technical scheme:
the utility model provides a continuous casting pouring device of titanium alloy molten steel, including ladle and tundish and workstation, the bogie plate is installed in the rotation on the workstation, set up two ladle positions that are used for placing the ladle on the bogie plate, the workstation bottom rigid coupling has the long mouth of a river of induction coil that is linked together with the ladle, the long mouth of a river of induction coil inserts in the tundish, the rigid coupling has the ventilative cover on the tundish, it has ventilative stopper to peg graft on the ventilative cover, the tank body that is used for leading in the argon gas is installed in the tundish outside, the bottom of tundish is equipped with the induction coil immersion nozzle for with the molten steel leading-in to the continuous casting crystallizer in, the tundish bottom is equipped with the slow-flow mechanism that is used for slowing down molten steel whereabouts impact force.
Preferably, the slow flow mechanism comprises a transmission sleeve which is installed at the bottom of the long water gap of the induction coil in a communicating way, the bottom of the transmission sleeve is connected with a connecting pipe in a sliding way, and a plurality of translatable diversion assemblies are arranged in the connecting pipe.
Preferably, the flow guiding component comprises a V-shaped plate, two connecting blocks are fixedly connected to one side of the V-shaped plate, a baffle is fixedly connected to the V-shaped plate, and an inclined plate is fixedly connected to the bottom of each connecting block.
Preferably, the V-shaped plate is fixedly connected with a connecting strip, the end part of the connecting strip is fixedly connected with an inserting block, the outer side of the transmission sleeve is fixedly connected with a bracket, and the bracket is provided with a belt piece for driving the flow guide assembly to move out of the connecting pipe.
Preferably, the guide assembly comprises belt pulleys rotatably arranged on two sides of the support, a belt is connected between the belt pulleys in a transmission manner, a motor b for driving the belt pulleys to run is fixedly arranged on the support, a plurality of U-shaped blocks connected with the plug blocks are fixedly connected on the belt, and a chute connected with the V-shaped plates in a sliding manner is formed in the support.
Preferably, an electric telescopic rod is arranged at the bottom of the tundish, and the free end of the electric telescopic rod is connected with the connecting pipe.
Preferably, the electric putter b is fixedly installed on the outer side of the tundish, the free end of the electric putter b is connected with the ventilation stopper rod, the delivery outlet of the tank body is connected with the flow guide pipe through a pipeline, and the electric putter a for driving the flow guide pipe to move is fixedly installed on the tundish.
Preferably, a motor a for replacing two steel ladle positions is fixedly arranged at the bottom of the workbench, and a transmission shaft connected with the weight plate is fixedly connected to the output end of the motor a.
Preferably, the height of the long water gap of the induction coil is 150-200cm, and the radius of the lower circle is 150-180cm.
A continuous casting method of molten titanium-containing alloy steel comprises the following steps:
s1, firstly placing a ladle on a ladle position, and then rotating a weight bearing plate to one side corresponding to a long water gap of an induction coil, so that uninterrupted pouring can be performed.
S2, molten steel enters the tundish through the long water gap of the induction coil, so that the molten steel can generate vortex in the long water gap of the induction coil, and the fluidity of the molten steel is improved.
S3, when the molten steel enters the tundish, 60kg of clean alkaline covering agent and 16kg of carbonized rice hulls are put into the tundish, and heat preservation can be performed while the molten steel in the tundish is blocked from contacting with air, wherein the clean alkaline covering agent can also absorb impurities floating in the molten steel.
S4, when the molten steel in the tundish reaches the height of 30cm, opening the ventilation stopper rod, injecting argon into the ventilation sleeve in the tank body, controlling the pressure of the argon to be 0.2-0.5MPa, and ensuring that the titanium-containing steel with poor fluidity cannot be blocked at the water gap of the tundish.
S5, after molten steel flows into the induction coil submerged nozzle, an induction magnetic field is generated in the induction coil submerged nozzle, the voltage of the induction coil submerged nozzle is controlled between 100 and 200V, the current is controlled between 50 and 100A, the power can reach 5 to 15KW, the molten steel can not be solidified before entering the crystallizer, and the molten steel can enter the continuous casting crystallizer to be cooled into a blank at the moment.
By means of the technical scheme, the invention provides a continuous casting device and method for molten steel containing titanium alloy, which at least have the following beneficial effects:
1. according to the continuous casting device and method for the titanium-containing alloy molten steel, argon is injected into the ventilation stopper rod, so that titanium-containing steel with poor fluidity cannot be blocked at the tundish nozzle, an induction magnetic field is generated in the induction coil immersed nozzle after molten steel flows into the tundish nozzle, the molten steel cannot be solidified before entering the crystallizer, and the molten steel can enter the continuous casting crystallizer to be cooled into a blank at the moment.
2. According to the continuous casting device and method for the titanium-containing alloy molten steel, the introduction speed of the molten steel can be improved while slowing down is guaranteed, and as the influence of the molten steel height on the connecting pipe is caused, different heights can cause different influences on the pressure of the connecting pipe, the distance between the connecting pipes is kept constant, and the flow and the pressure of the molten steel entering the connecting pipe can be basically unchanged.
3. According to the continuous casting pouring device and method for the titanium-containing alloy molten steel, falling molten steel is buffered, severe oscillation and vortex of the molten steel in the falling process can be avoided, so that oxidation of the molten steel and formation of inclusions are reduced, quality and uniformity of the molten steel are improved, in addition, impact force of the molten steel in the falling process of a crystallizer can be reduced, abrasion and damage of the crystallizer are reduced, and service life of equipment is prolonged. Therefore, the continuous casting pouring device can improve the quality and the yield of the steel castings, reduce the production cost and improve the economic benefit.
4. The continuous casting device and the method for the titanium-containing alloy molten steel have stable molten steel flow and pressure, and can ensure the stability of production efficiency. The distance between the connecting pipe and the molten steel is adjusted, so that the connecting pipe always keeps the same distance with the molten steel, and the production efficiency and the product quality can be improved to the greatest extent.
5. According to the continuous casting device and method for the titanium-containing alloy molten steel, the integral stopper rod in the tundish is replaced by the breathable integral stopper rod, the submerged nozzle is replaced by the induction coil submerged nozzle, casting use parameters for the titanium-containing molten steel are regulated, and the titanium-containing molten steel with poor fluidity can smoothly enter a crystallizer of a continuous casting machine for cooling and forming.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application:
FIG. 1 is a schematic perspective view of the present invention in front view;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of the external connection structure of the induction coil long nozzle of the present invention;
FIG. 4 is a schematic view showing the internal structure of the connecting pipe according to the present invention;
FIG. 5 is a cross-sectional view of the drive sleeve and connecting tube of the present invention;
FIG. 6 is a schematic view of the exterior structure of the drive sleeve of the present invention;
FIG. 7 is an enlarged view of the invention at A of FIG. 6;
FIG. 8 is a schematic view of a flow directing assembly according to the present invention;
FIG. 9 is a schematic view of the structure of the air permeable stopper rod of the present invention prior to modification;
fig. 10 is a schematic structural view of an improved air permeable stopper rod according to the present invention.
Reference numerals:
100. a work table; 101. a weight plate; 102. ladle position; 103. ladle; 104. a tundish; 105. a motor a; 106. a transmission shaft; 107. a long water gap of the induction coil; 108. an induction coil submerged nozzle; 109. a tank body; 1010. a ventilation sleeve; 1011. a ventilation stopper rod; 1012. a flow guiding pipe; 1013. an electric push rod a; 1014. an electric push rod b;
200. a slow flow mechanism; 201. a transmission sleeve; 202. a connecting pipe; 203. an electric telescopic rod; 204. a flow guiding assembly; 2041. a baffle; 2042. a V-shaped plate; 2043. a sloping plate; 2044. a connecting block; 205. a connecting strip; 206. inserting blocks; 207. a U-shaped block; 208. a bracket; 209. a belt member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes a continuous casting device and a method for molten titanium-containing alloy steel according to some embodiments of the present invention with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1-3, the continuous casting pouring device for molten steel containing titanium provided by the invention comprises a steel ladle 103, a tundish 104 and a workbench 100, wherein a weight plate 101 is rotatably arranged on the workbench 100, a steel ladle position 102 for placing the steel ladle 103 is arranged on the weight plate 101, an induction coil long water gap 107 communicated with the steel ladle 103 is fixedly connected to the bottom of the workbench 100 and is used for guiding molten steel into a continuous casting crystallizer, the induction coil long water gap 107 is inserted into the tundish 104, a ventilation sleeve 1010 is fixedly connected to the tundish 104, a ventilation plug 1011 is inserted onto the ventilation sleeve 1010, a tank 109 for guiding argon is arranged outside the tundish 104, the molten steel is stirred by blowing argon into the tundish 104 through lifting the ventilation plug 1011, the fluidity of the molten steel is increased, the argon pressure is controlled to be 0.2-0.5MPa, the bottom of the tundish 104 is provided with an induction coil immersed water gap 108, the voltage is controlled to be 200-300V, the current is controlled to be 100-200A, the power can reach 30-50KW, and a slow-flow impact mechanism for slowing down the molten steel is arranged at the bottom of the tundish 104.
The height of the induction coil long water gap 107 is 150-200cm, and the radius of the lower circle is 150-180cm.
Application example one:
taking the production of continuous casting billets of N08825 titanium-containing steel variety phi 300 (the titanium content in the steel is 0.6-1.2%), the tapping temperature of an LF furnace is controlled to 1550-1600 ℃, after a steel ladle 103 is placed in a loading plate 101, the setting parameters of the induction coil long nozzle 107, the immersed nozzle voltage and current and the argon flow of a ventilation plug 1011 are as follows:
embodiment two:
referring to fig. 1-8, on the basis of the first embodiment, the slow flow mechanism 200 includes a transmission sleeve 201 installed at the bottom of the long water gap 107 of the induction coil in a communicating manner, a connecting pipe 202 is slidably connected to the bottom of the transmission sleeve 201, a plurality of translatable diversion assemblies 204 are disposed in the connecting pipe 202, the diversion assemblies 204 are arranged, so that impact force generated by falling of molten steel can be slowed down, the connecting pipe 202 is lifted, then the diversion assemblies 204 corresponding to the diversion assemblies are removed, the number of the diversion assemblies 204 can be adjusted according to the height of molten steel in the crystallizer, the higher the molten steel height is, the connecting pipe 202 is lifted, the same distance between the connecting pipe 202 and the molten steel is always kept, and for the reduction of the number of the diversion assemblies 204, the introduction speed of the molten steel can be improved while the slowing down is ensured, and due to the influence of the molten steel height on the connecting pipe 202, different heights can cause different influences on the pressure of the connecting pipe 202, so that the distance of the connecting pipe 202 is kept constant, and the flow and the pressure of the molten steel entering the connecting pipe can be ensured to be basically unchanged.
Specifically, the flow guiding assembly 204 includes a V-shaped plate 2042, two connecting blocks 2044 are fixedly connected to one side of the V-shaped plate 2042, a baffle 2041 is fixedly connected to the V-shaped plate 2042, an inclined plate 2043 is fixedly connected to the bottom of the connecting block 2044, molten steel falls onto the V-shaped plate 2042 first, and then is introduced onto the inclined plate 2043, so that various types of buffering can be performed, and the buffered impact force of the falling molten steel is further improved.
Further, the V-shaped plate 2042 is fixedly connected with a connecting strip 205, the end of the connecting strip 205 is fixedly connected with an inserting block 206, the outer side of the transmission sleeve 201 is fixedly connected with a support 208, the support 208 is provided with a belt piece 209 for driving the flow guiding component 204 to move out of the connecting pipe 202, the belt piece 209 operates, the flow guiding component 204 can be guided out of the connecting pipe 202, and the flow guiding component 204 can be guided into the connecting pipe 202, so that the number of the flow guiding components 204 can be adjusted according to the height of molten steel, the higher the molten steel in the crystallizer is, the smaller the number of the flow guiding components 204 is, and conversely, the more the number of the flow guiding components 204 is.
According to the embodiment, the falling molten steel is buffered, so that severe oscillation and vortex of the molten steel in the falling process can be avoided, oxidation of the molten steel and formation of inclusions are reduced, and quality and uniformity of the molten steel are improved. In addition, the impact force of molten steel when falling into the crystallizer can be reduced by buffering, the abrasion and damage of the crystallizer are reduced, and the service life of equipment is prolonged. Therefore, the continuous casting pouring device can improve the quality and the yield of the steel castings, reduce the production cost and improve the economic benefit.
Embodiment III:
referring to fig. 6-8, in the first embodiment, the guide assembly 204 includes pulleys rotatably mounted on two sides of the support 208, a belt is connected between the pulleys in a driving manner, a motor b for driving the pulleys to operate is fixedly mounted on the support 208, a plurality of U-shaped blocks 207 connected with the insert blocks 206 in a sliding manner are fixedly connected on the belt, a V-shaped plate 2042 is provided on the support 208, the motor b drives one of the pulleys to rotate, the U-shaped blocks 207 on the belt can be driven to move, the U-shaped blocks 207 are inserted with the insert blocks 206, the U-shaped blocks 207 drive the connecting strips 205 on the insert blocks 206 to move, the V-shaped plate 2042 moves along with the connecting strips 205, the guide assembly 204 can be integrally moved out, when molten steel in the crystallizer continuously rises, the connecting tubes 202 drive the guide assembly 204 to rise, then the insert blocks 206 on the corresponding guide assembly 204 are inserted into the U-shaped blocks 207, then the belt 209 is conveyed, the guide assembly 204 on the corresponding position is removed, and when molten steel needs to be added into the crystallizer again after the current crystallization is completed, the belt 209 is reversely driven, and the guide assembly 204 can be pushed into the connecting tube 202.
Specifically, the bottom of the tundish 104 is provided with an electric telescopic rod 203, the free end of the electric telescopic rod 203 is connected with the connecting pipe 202, and the electric telescopic rod 203 is started to drive the free end to shrink or stretch out, so that the connecting pipe 202 can be lifted.
Further, an electric push rod b1014 is fixedly arranged on the outer side of the tundish 104, the free end of the electric push rod b1014 is connected with a ventilation plug 1011, a flow guide 1012 is connected to an output port of the tank 109 through a pipeline, an electric push rod a1013 for driving the flow guide 1012 to move is fixedly arranged on the tundish 104, the free end of the electric push rod b1014 moves upwards, the ventilation plug 1011 can be taken out of the ventilation sleeve 1010, then the free end of the electric push rod a1013 drives the flow guide 1012 to move, the output port of the flow guide 1012 moves to the position of the ventilation sleeve 1010, and then a pump body on the tank 109 starts to guide argon into the ventilation sleeve 1010 to stir molten steel.
The bottom of the workbench 100 is fixedly provided with a motor a105 for transposition of the two ladle positions 102, and the output end of the motor a105 is fixedly connected with a transmission shaft 106 connected with the weight plate 101.
According to the embodiment, the stable flow rate and pressure of the molten steel can ensure the stability of production efficiency. By adjusting the distance between the connecting pipe 202 and the molten steel, the connecting pipe 202 always keeps the same distance with the molten steel, and the production efficiency and the product quality can be improved to the greatest extent.
Embodiment four:
referring to fig. 1 and 2, the continuous casting method of molten titanium-containing alloy steel provided by the invention comprises the following steps:
s1, firstly placing the ladle 103 on the ladle position 102, and then rotating the weight plate 101 to the side corresponding to the induction coil long nozzle 107, so that uninterrupted pouring can be performed.
S2, molten steel enters the tundish 104 through the long water gap 107 of the induction coil, so that the molten steel can generate vortex in the long water gap 107 of the induction coil, and the fluidity of the molten steel is improved.
S3, when the molten steel enters the tundish 104, 60kg of clean alkaline covering agent and 16kg of carbonized rice hulls are put into the tundish 104, and heat preservation can be performed while the molten steel in the tundish 104 is blocked from contacting with air, wherein the clean alkaline covering agent can also absorb impurities floating in the molten steel.
S4, when the molten steel in the tundish 104 reaches the height of 30cm, opening the ventilation stopper 1011, and injecting argon into the ventilation sleeve 1010 in the tank 109, wherein the pressure of the argon is controlled to be 0.2-0.5MPa, so that the titanium-containing steel with poor fluidity is ensured not to be blocked at the water gap of the tundish 104.
S5, after molten steel flows into the induction coil submerged nozzle 108, an induction magnetic field is generated in the induction coil submerged nozzle 108, the voltage of the induction coil submerged nozzle 108 is controlled between 100 and 200V, the current is controlled between 50 and 100A, the power can reach 5KW to 15KW, the molten steel can not be solidified before entering the crystallizer, and the molten steel can enter the continuous casting crystallizer to be cooled into a blank at the moment.
The molten steel temperature corresponds to the following:
as shown in fig. 9 and 10, the third line (the position of the gas permeable plug 1011) is a continuous upward trend, which means that condensation is accumulated at the lower opening position of the gas permeable plug 1011, and the gap between the gas permeable plug 1011 and the water gap of the tundish 104 becomes smaller, so that the flow rate of molten steel becomes smaller, and therefore the position of the gas permeable plug 1011 must be moved upward to increase the gap between the gas permeable plug 1011 and the water gap of the tundish 104, thereby increasing the flow rate.
After the long nozzle is changed into the long nozzle of the induction coil long nozzle 107, the integral stopper is changed into the permeable stopper 1011 and the immersed nozzle is changed into the induction coil immersed nozzle 108, the position of the permeable stopper 1011 shows a basic horizontal trend in the casting process, which means that the condensate is not accumulated basically around the permeable stopper 1011, the flow of molten steel flowing into the tundish 104 is kept at a normal level, and the molten steel is cooled in the crystallizer smoothly to form a blank.
It is noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a continuous casting pouring device of titanium-containing molten alloy steel, includes ladle (103) and tundish (104) and workstation (100), its characterized in that: the steel ladle pouring device comprises a workbench (100), a loading plate (101) is rotatably arranged on the workbench (100), two steel ladle positions (102) for placing steel ladles (103) are formed in the loading plate (101), an induction coil long water gap (107) communicated with the steel ladles (103) is fixedly connected to the bottom of the workbench (100), the induction coil long water gap (107) is inserted into a tundish (104), an air permeable sleeve (1010) is fixedly connected to the tundish (104), an air permeable stopper (1011) is inserted onto the air permeable sleeve (1010), a tank body (109) for introducing argon is arranged on the outer side of the tundish (104), an induction coil immersed water gap (108) is formed in the bottom of the tundish (104) and used for introducing molten steel into a continuous casting crystallizer, and a flow retarding mechanism (200) for retarding the falling impact force of the molten steel is arranged at the bottom of the tundish (104).
2. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 1, wherein: the slow flow mechanism (200) comprises a transmission sleeve (201) which is installed at the bottom of the induction coil long water gap (107) in a communicating mode, a connecting pipe (202) is connected to the bottom of the transmission sleeve (201) in a sliding mode, and a plurality of translatable flow guide assemblies (204) are arranged in the connecting pipe (202).
3. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 2, wherein: the flow guide assembly (204) comprises a V-shaped plate (2042), two connecting blocks (2044) are fixedly connected to one side of the V-shaped plate (2042), a baffle (2041) is fixedly connected to the V-shaped plate (2042), and an inclined plate (2043) is fixedly connected to the bottom of the connecting blocks (2044).
4. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 3, wherein: connecting strips (205) are fixedly connected to the V-shaped plates (2042), inserting blocks (206) are fixedly connected to the end portions of the connecting strips (205), supports (208) are fixedly connected to the outer sides of the transmission sleeves (201), and belt pieces (209) used for driving the flow guide assemblies (204) to move out of the connecting pipes (202) are arranged on the supports (208).
5. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 4, wherein: the guide assembly (204) comprises belt pulleys rotatably arranged on two sides of the support (208), a belt is connected between the belt pulleys in a transmission manner, a motor b for driving the belt pulleys to operate is fixedly arranged on the support (208), a plurality of U-shaped blocks (207) connected with the plug blocks (206) are fixedly connected on the belt, and a chute which is slidably connected with the V-shaped plate (2042) is formed in the support (208).
6. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 2, wherein: the bottom of the tundish (104) is provided with an electric telescopic rod (203), and the free end of the electric telescopic rod (203) is connected with a connecting pipe (202).
7. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 1, wherein: the outer side of the tundish (104) is fixedly provided with an electric push rod b (1014), the free end of the electric push rod b (1014) is connected with a ventilation stopper rod (1011), an output port of the tank body (109) is connected with a flow guide pipe (1012) through a pipeline, and the tundish (104) is fixedly provided with an electric push rod a (1013) for driving the flow guide pipe (1012) to move.
8. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 1, wherein: the bottom of the workbench (100) is fixedly provided with a motor a (105) for transposition of two ladle positions (102), and the output end of the motor a (105) is fixedly connected with a transmission shaft (106) connected with the weight plate (101).
9. The continuous casting and pouring device for molten titanium-containing alloy steel according to claim 1, wherein: the height of the induction coil long water gap (107) is 150-200cm, and the radius of the lower circle is 150-180cm.
10. A continuous casting method for the molten titanium-containing alloy steel according to any one of claims 1 to 9, comprising the steps of:
s1, firstly placing a ladle (103) on a ladle position (102), and then rotating a weight bearing plate (101) to one side corresponding to an induction coil long nozzle (107) to perform uninterrupted pouring.
S2, molten steel enters the tundish (104) through the induction coil long water gap (107), so that the molten steel can generate vortex in the induction coil long water gap (107), and the fluidity of the molten steel is improved.
S3, when the molten steel enters the tundish (104), 60kg of clean alkaline covering agent and 16kg of carbonized rice hulls are put into the tundish (104), and the heat preservation can be carried out while the molten steel in the tundish (104) is blocked from contacting with air, wherein the clean alkaline covering agent can also absorb impurities floating in the molten steel.
S4, when the molten steel in the tundish (104) reaches the height of 30cm, opening the ventilation stopper (1011), injecting argon into the ventilation sleeve (1010) in the tank body (109), controlling the pressure of the argon to be 0.2-0.5MPa, and ensuring that the titanium-containing steel with poor fluidity cannot be blocked at the water gap of the tundish (104).
S5, after molten steel flows into the induction coil immersed nozzle (108), an induction magnetic field is generated in the induction coil immersed nozzle (108), the voltage of the induction coil immersed nozzle (108) is controlled between 100 and 200V, the current is controlled between 50 and 100A, the power can reach 5KW to 15KW, the molten steel can not be solidified before entering the crystallizer, and the molten steel can enter the continuous casting crystallizer to be cooled into a blank at the moment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311677967.9A CN117600423A (en) | 2023-12-08 | 2023-12-08 | Continuous casting device and method for molten steel containing titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311677967.9A CN117600423A (en) | 2023-12-08 | 2023-12-08 | Continuous casting device and method for molten steel containing titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117600423A true CN117600423A (en) | 2024-02-27 |
Family
ID=89944235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311677967.9A Pending CN117600423A (en) | 2023-12-08 | 2023-12-08 | Continuous casting device and method for molten steel containing titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117600423A (en) |
-
2023
- 2023-12-08 CN CN202311677967.9A patent/CN117600423A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2675880C2 (en) | Semi-continuous casting of a steel strip | |
| CN109079114A (en) | A method of abrasion-resistant stee is produced using slab secondary cooling zone electromagnetic agitation | |
| CN101219464A (en) | Continuous casting crystallizer capable of controlling liquid level flow field and wave motion | |
| CN215144663U (en) | Improved generation pushing off slag ladle structure | |
| CN214977713U (en) | High-temperature-resistant ladle for producing silicon and calcium | |
| JP5245800B2 (en) | Continuous casting mold and steel continuous casting method | |
| CN117600423A (en) | Continuous casting device and method for molten steel containing titanium alloy | |
| US5429655A (en) | System for removing non-metallic foreign matter in molten metal | |
| CN117245064A (en) | Process and equipment for controlling crystallization structure of integral casting roller | |
| CN105710333A (en) | Centrifugal casting process for large heat-resistant steel furnace bottom roller body | |
| CN213379221U (en) | Billet vacuum pouring device | |
| CN111715855B (en) | Casting method for 1Cr17Ni2 or 5CrNiMoV steel ingot | |
| CN114734007A (en) | Narrow-side bulging control method for high-grade silicon steel continuous casting billet | |
| JPWO2019044292A1 (en) | Steel continuous casting method and thin steel plate manufacturing method | |
| CN111375736B (en) | Casting method of martensite precipitation hardening stainless steel | |
| JP4757661B2 (en) | Vertical continuous casting method for large section slabs for thick steel plates | |
| CN113426970A (en) | Vertical semi-continuous production device and production process of large round billets with phi of 1000 mm-2000 mm | |
| RU51544U1 (en) | PRODUCT CASTING DEVICE (OPTIONS) | |
| CN219703430U (en) | Ingot casting machine cooling device | |
| CN111570744B (en) | Pouring device and pouring method of continuous casting machine | |
| CN117020186B (en) | Casting device of automobile cold plate casting | |
| CN218050216U (en) | Ingot casting device for automatic injection molding and continuous casting | |
| CN113549728B (en) | Device for preventing converter from deslagging and shortening tapping time and using method | |
| CN218596540U (en) | Piston type rare earth metal liquid suction tapping device | |
| JP2011194420A (en) | Method of producing high cleanliness steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |