CN113275529B - Processing method for controlling titanium oxide in titanium-containing alloy steel and tundish adopted by same - Google Patents
Processing method for controlling titanium oxide in titanium-containing alloy steel and tundish adopted by same Download PDFInfo
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- CN113275529B CN113275529B CN202110484365.6A CN202110484365A CN113275529B CN 113275529 B CN113275529 B CN 113275529B CN 202110484365 A CN202110484365 A CN 202110484365A CN 113275529 B CN113275529 B CN 113275529B
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 239000010936 titanium Substances 0.000 title claims abstract description 60
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 57
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 title claims abstract description 23
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 105
- 239000010959 steel Substances 0.000 claims abstract description 105
- 238000005266 casting Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 58
- 239000002893 slag Substances 0.000 claims description 46
- 238000007664 blowing Methods 0.000 claims description 34
- 229910052786 argon Inorganic materials 0.000 claims description 29
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 18
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000011449 brick Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000001556 precipitation Methods 0.000 claims description 5
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910001200 Ferrotitanium Inorganic materials 0.000 claims description 2
- 230000001629 suppression Effects 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 238000010310 metallurgical process Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 description 6
- 229920000742 Cotton Polymers 0.000 description 5
- 238000005728 strengthening Methods 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000009749 continuous casting Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- 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
- B22D11/116—Refining the metal
-
- 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
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- 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
- B22D11/108—Feeding additives, powders, or the like
-
- 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
- B22D11/116—Refining the metal
- B22D11/117—Refining the metal by treating with gases
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a processing method for controlling titanium oxide in titanium-containing alloy steel and a tundish adopted by the same, belonging to the field of metallurgical processes. The processing method is to perform deoxidation treatment on the primary molten steel titanium preparation stage, and perform casting treatment by using the deoxidized titanium preparation molten steel; according to the processing method for controlling titanium oxide in titanium-containing alloy steel, provided by the invention, the molten steel is subjected to oxidation removal treatment before casting, so that the probability of titanium oxidation in the process of feeding titanium into the molten steel is avoided. When pouring in the tundish, the pouring work is started only after the molten steel depth of the pouring area reaches the height of the through hole, so that the molten steel is kept in an oxygen-free environment all the time in the process, the contact time of molten steel diffusion flow and air is reduced, and the probability of oxidation of titanium in the molten steel is reduced.
Description
Technical Field
The invention relates to a processing method for controlling titanium oxide in titanium-containing alloy steel and a tundish adopted by the same, belonging to the field of metallurgical processes.
Background
Titanium-containing alloy steel generally means that the titanium content is 0.03Steel grade of 0.25 percent. The steel is alloyed by adding titanium which is an element easy to be oxidized, and the oxide (TiO) of titanium in molten steel 2 ) And titanium oxide (TiO) produced by secondary oxidation during casting 2 ) The water adheres to a gap between the stopper rod and the water feeding port, so that the opening degree of the stopper rod is gradually reduced, and finally, the opening is blocked to form a lump and stop pouring. Therefore, the molten steel is returned to the furnace, continuous casting is stopped, the tundish is baked again for preparation, and the like, so that the normal operation of production organization is influenced, the production cost is high, and the benefit is reduced.
The titanium is prepared from the molten steel by feeding titanium wires into the molten steel, the yield of the titanium is about 65 percent in the wire feeding mode, and the titanium is oxidized in three modes: 1) Titanium is oxidized by oxygen in the molten steel; 2) SiO in slag 2 Oxidizing; 3) When feeding wire, the titanium wire can not be vertically fed into the molten steel or the bottom blowing argon gas is not well controlled, and the molten steel inhales air, so that the titanium is oxidized by the oxygen in the air.
At present, in the tundish inner cavity structure for casting small square billets, molten steel flows into a tundish casting area through an impact area and 4 holes in the middle and lower parts of a slag wall during casting, the molten steel is completely in a free flow state, the contact surface of the molten steel and air is quite large, and the molten steel cannot contact the air only when the depth of the molten steel in the casting area is higher than the height of four holes, namely the depth of the molten steel in the tundish reaches the height of four holes after the weight of the molten steel in the tundish reaches 18-20 tons, however, an operator is used to start a stopper rod in advance to cast (the tonnage of the tundish is about 15 tons during casting), so that the time for the depth of the molten steel in the tundish to reach the height of 4 holes in the slag wall is prolonged, namely the contact time of the free flow of the molten steel and the air is prolonged, and the probability of oxidizing titanium in the molten steel is increased.
Disclosure of Invention
Aiming at the defects, the invention provides a processing method for controlling titanium oxide in titanium-containing alloy steel and a tundish adopted by the method.
The invention adopts the following technical scheme:
the processing method for controlling titanium oxide in titanium-containing alloy steel is characterized in that deoxidation treatment is carried out in a titanium mixing stage of primary molten steel, and cast-on treatment is carried out by adopting deoxidized titanium-mixed molten steel;
the deoxidation process steps in the stage of primary molten steel titanium mixing are as follows:
step 1-1, performing aluminum precipitation deoxidation on primary molten steel in a steel ladle; feeding titanium wires after deoxidizing the primary molten steel;
step 1-2, performing diffusion deoxidation on the slag of the aluminum-containing molten steel by using an aluminum-containing slag surface deoxidizer, and feeding a titanium wire again after the color of the slag is completely whitened;
step 1-3, controlling the composition of the ladle top slag and reducing SiO in the slag 2 Activity through CaO 2 SiO suppression 2 +Ti＝Si+TiO 2 Carrying out reaction; at the moment, titanium-added molten steel is formed in the steel ladle;
the casting deoxidation process for preparing the titanium molten steel comprises the following steps:
step 2-1, before the deoxidized titanium-mixed molten steel is poured into a tundish, argon is blown into the tundish by an argon blowing pipe, and a pouring opening at the bottom end of the tundish is blocked by a stopper rod;
step 2-2, removing the argon blowing pipe of the tundish, and continuously casting the titanium-added molten steel to an impact area of the tundish;
step 2-3, enabling the titanium steel liquid to enter a pouring area through a through hole of the slag stopping wall;
and 2-4, removing the pouring gate stopper for pouring after the liquid level of the titanium molten steel is higher than the highest point through hole of the slag wall.
According to the processing method for controlling titanium oxide in titanium-containing alloy steel, the aluminum content of primary molten steel in the step 1-1 is controlled to be +/-0.015 percent; when the oxygen content in the molten steel is lower than 8ppm, feeding titanium wires.
In the processing method for controlling titanium oxide in titanium-containing alloy steel, the percentage (% by mass) of TFe + MnO in the slag in the step 1-2 is less than 1.5%.
In the step 1-1 or 1-2, argon flow and pressure blown to the bottom of the ladle are controlled when a titanium wire is fed, so that molten steel is ensured not to be exposed; the argon bottom blowing of the ladle selects the bottom blowing brick opposite to the wire feeding point to carry out weak stirring, so that the titanium enters the middle and lower parts of the ladle as soon as possible along with the descending flow.
In the processing method for controlling titanium oxide in titanium-containing alloy steel, in the step 1-1 or 1-2, a feeding guide pipe for feeding a titanium wire is inserted into molten steel for wire feeding.
In the processing method for controlling titanium oxide in titanium-containing alloy steel, in the step 2-1, an argon blowing pipe is respectively connected to an impact area and a pouring area in the middle; the argon blowing time is 5-6 minutes.
The tundish for controlling the processing method of titanium alloy-containing steel oxide comprises a tundish body and a cover body; the bag body is a cavity with an opening on the upper end surface and a hole on the lower end surface, the cavity of the bag body is divided into an impact area and a pouring area, a slag wall is arranged between the impact area and the pouring area, and a through hole is arranged on the slag wall; the cover body completely covers the opening part of the upper end surface of the bag body, and through holes are respectively formed in the cover body relative to the impact area and the pouring area.
According to the tundish for controlling the processing method of the titanium-alloy steel titanium oxide, thick refractory cotton is paved on the upper end part of the tundish body of the tundish along the outlines of the impact area and the pouring area.
Advantageous effects
According to the processing method for controlling titanium oxide in titanium-containing alloy steel, provided by the invention, before molten steel is cast, the molten steel is subjected to oxidation treatment, so that the probability of titanium oxidation in the process of feeding titanium into the molten steel is avoided.
According to the processing method for controlling titanium oxide in titanium-containing alloy steel, when pouring is carried out in the tundish, the pouring work is started only after the molten steel depth of the pouring area reaches the height of the through hole, the molten steel is guaranteed to be kept in an oxygen-free environment all the time in the process, the contact time of molten steel diffusion flow and air is reduced, and the probability of oxidation of titanium in the molten steel is reduced.
Drawings
FIG. 1 is a schematic diagram of a bag body structure of a tundish of the present invention;
FIG. 2 is a schematic view of the overall construction of the tundish of the present invention;
FIG. 3 is a front view of the impact area of the tundish of the present invention;
FIG. 4 is a schematic view of the cover structure of the tundish of the present invention;
in the figure, 1 is a bag body, 2 is a cover body, 3 is a pouring area, 4 is an impact area, 5 is a slag wall, 6 is a through hole, and 7 is thick refractory cotton.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention.
As shown in fig. 1, 2, 3, and 4: the tundish comprises a tundish body 1 and a cover body 2; the bag body 1 is a cavity with an opening at the upper end surface and a hole at the lower end surface, the cavity of the bag body 1 is divided into an impact area 4 and a pouring area 3, a slag wall 5 is arranged between the impact area 4 and the pouring area 3, and a through hole 6 is arranged on the slag wall 5; the cover body 2 completely covers the opening part of the upper end surface of the bag body 1, and through holes 6 are respectively arranged on the cover body 2 relative to the impact area 4 and the pouring area 3. The upper end part of the bag body 1 of the tundish is paved with thick refractory wool 7 along the outlines of the impact zone 4 and the pouring zone 3.
The deoxidation process steps in the stage of preparing titanium from primary molten steel comprise:
1) Enhancing molten steel deoxidation, adopting aluminum precipitation deoxidation, controlling the aluminum content in the molten steel to be about 0.015 percent, measuring the oxygen content in the molten steel before wire feeding, and feeding a titanium wire when the oxygen content in the molten steel is lower than 8 ppm;
2) Strengthening slag deoxidation, namely performing diffusion deoxidation on the LF slag by using an aluminum-containing slag surface deoxidizer to ensure that the TFe + MnO percent in the slag is less than 1.5 percent, and feeding titanium wires after the slag is completely whitened;
3) Controlling the composition of the ladle top slag and reducing SiO in the slag 2 Activity, inhibition of SiO 2 +Ti＝Si+TiO 2 Carrying out reaction;
4) Controlling proper bottom blowing argon flow and pressure during feeding titanium wires to ensure that molten steel is not exposed, and meanwhile, controlling a ladle bottom blowing mode, and selecting a bottom blowing brick opposite to a wire feeding point to perform weak stirring so that titanium enters the middle part and the lower part of a ladle as soon as possible along with down flow;
5) In the structure of the LF furnace or RH furnace wire feeding guide pipe, the diameter of the guide pipe is not too large, the distance between the lower part of the guide pipe and the molten steel surface is not too large during wire feeding, and the guide pipe is fixed and is not easy to shake, so that the wire is prevented from looping in the guide pipe and on the molten steel surface. The wire feeding guide pipe is thoroughly transformed, and a wire feeding mode that the guide pipe is inserted into molten steel is adopted.
6) The proper soft stirring time (more than 15 minutes) is controlled to ensure the soft stirring effect (the molten steel is not exposed).
The method comprises the following steps of generating titanium oxide during casting and solving the problem:
1) Before casting, three argon blowing pipes are used for blowing argon into the tundish, and argon blowing is carried out at the position of the through hole 6 shown in figure 2 so as to replace the air in the tundish;
special attention is paid to: the height of the argon blowing pipe is kept consistent with the depth in the tundish, and the argon blowing time is controlled to be about 5-6 minutes;
2) Controlling the starting time of the stopper rod, and starting the stopper rod to start pouring when the depth of the molten steel in the tundish is higher than the height of the through hole 6 on the slag wall 5;
3) The sealing of the tundish is enhanced, and the contact between the molten steel and air is isolated as much as possible;
as shown in fig. 1: and a layer of thick refractory cotton 7 is padded on the periphery of the upper edge of the tundish, and then the cover body 2 of the tundish is covered to realize closing.
Example 1: production of SWRCH22ATiB
The components are as follows:
| ％ | C | Si | Mn | S | P | Cr | Ni | Cu | Ti | Al | B |
| target value | 0.20 | - | 0.75 | 0.065 | 0.025 | 0.0013 | |||||
| Upper limit value | 0.22 | 0.10 | 0.80 | 0.010 | 0.018 | 0.10 | 0.10 | 0.15 | 0.080 | 0.050 | 0.0016 |
| Lower limit value | 0.19 | - | 0.70 | 0.050 | 0.020 | 0.0008 |
1. Primary smelting furnace
1. Tapping in a primary smelting furnace, strengthening molten steel deoxidation, adopting aluminum precipitation deoxidation, and controlling the aluminum content in the molten steel to be about 0.015 percent by completely adding aluminum ingots as soon as possible (before steel is discharged).
2. No slag is discharged in the tapping process. After the steel is discharged, the Ar pressure of the bottom blowing of the steel ladle is adjusted to be 0.1-0.2 MPa (1-2 bar), the liquid steel surface slightly fluctuates and does not violently turn over
3. The tapping temperature was controlled at 1632 ℃.
2. The refining operation requirement is as follows:
1. refining and strengthening slag deoxidation, adopting an aluminum-containing slag surface deoxidizer to carry out diffusion deoxidation on LF slag to ensure that the TFe + MnO percent in the slag is less than 1.5 percent, feeding titanium wires after the slag is completely whitened,
2. and the bottom blowing manner of the steel ladle is controlled, and a bottom blowing brick opposite to a wire feeding point is selected for weak stirring, so that titanium enters the middle part and the lower part of the steel ladle as soon as possible along with the descending flow.
4. Continuous casting operation
1. Before casting, argon is blown into the tundish by using three argon blowing pipes to replace the air in the tundish (particularly, the height of the argon blowing pipe is kept consistent with the depth in the tundish, and the argon blowing time is controlled to be about 5-6 minutes);
2) Controlling the starting time of the stopper rod, and starting the stopper rod to start pouring when the depth of the molten steel in the tundish is higher than the height of the hole on the slag stopping wall;
3) The tundish sealing is enhanced, the contact between molten steel and air is isolated as much as possible, a layer of thicker refractory cotton is arranged on the periphery of the upper edge of the tundish, and then the tundish cover is covered.
By adopting the measures, the SWRCH22ATiB successfully pours 17 furnaces.
Example 2: production of H08C-D
The components are as follows:
1. primary smelting furnace
1. Tapping from a primary smelting furnace, strengthening molten steel deoxidation, and adopting aluminum precipitation deoxidation, wherein aluminum ingots are required to be completely added as soon as possible (before steel is discharged), and the aluminum content in the molten steel is controlled to be about 0.015%.
2. No slag is discharged in the tapping process. After the steel is discharged, the Ar pressure of the bottom blowing of the steel ladle is adjusted to be 0.1-0.2 MPa (1-2 bar), the liquid steel surface slightly fluctuates and does not violently turn over
3. The tapping temperature was controlled at 1632 ℃.
2. The refining operation requirement is as follows:
1. refining and strengthening slag deoxidation, adopting an aluminum-containing slag surface deoxidizer to carry out diffusion deoxidation on LF slag to ensure that the TFe + MnO percent in the slag is less than 1.5 percent, feeding titanium wires after the slag is completely whitened,
2. and the bottom blowing mode of the steel ladle is controlled, and a bottom blowing brick opposite to a wire feeding point is selected for weak stirring, so that titanium enters the middle part and the lower part of the steel ladle as soon as possible along with the descending flow.
4. Continuous casting operation
1. Before casting, argon is blown into the tundish by using three argon blowing pipes to replace the air in the tundish (particularly, the height of the argon blowing pipe is kept consistent with the depth in the tundish, and the argon blowing time is controlled to be about 5-6 minutes);
2) Controlling the starting time of the stopper rod, and starting the stopper rod to start pouring when the depth of the molten steel in the tundish is higher than the height of the hole on the slag stopping wall;
3) The tundish sealing is enhanced, the contact between the molten steel and air is isolated as far as possible, a layer of thicker refractory cotton is arranged on the periphery of the upper edge of the tundish, and then the tundish cover is covered.
By adopting the measures, the H08C-D successfully pours 12 furnaces.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A processing method for controlling titanium oxide in titanium-containing alloy steel is characterized in that: the processing method aims at the stage of titanium preparation of primary molten steel to carry out deoxidation treatment, and the titanium preparation molten steel after deoxidation is adopted to carry out casting treatment;
the deoxidation process in the stage of primary molten steel titanium preparation comprises the following steps:
step 1-1, deoxidizing primary molten steel in a steel ladle by adopting aluminum precipitation; feeding titanium wires after deoxidizing the primary molten steel;
step 1-2, performing diffusion deoxidation on the slag of the aluminum-containing molten steel by using an aluminum-containing slag surface deoxidizer, and feeding a titanium wire again after the color of the slag is completely whitened;
step 1-3, controlling the composition of the ladle top slag and reducing SiO in the slag 2 Activity through CaO 2 SiO suppression 2 +Ti=Si+TiO 2 Carrying out reaction; at the moment, titanium-added molten steel is formed in the steel ladle;
the casting deoxidation process for preparing the titanium molten steel comprises the following steps:
2-1, before casting the deoxidized titanium-mixed molten steel into a tundish, blowing argon into the tundish by using an argon blowing pipe, and blocking a casting opening at the bottom end of the tundish by using a stopper rod;
step 2-2, removing the argon blowing pipe of the tundish, and continuously casting the titanium-added molten steel to an impact area of the tundish;
step 2-3, enabling the titanium steel liquid to enter a pouring area through a through hole of the slag stopping wall;
and 2-4, removing the pouring gate stopper for pouring after the liquid level of the titanium molten steel is higher than the highest point through hole of the slag wall.
2. The method for controlling the processing of titanium oxide in titanium alloy steel according to claim 1, wherein: and feeding titanium wires when the oxygen content in the primary molten steel in the step 1-1 is lower than 8 ppm.
3. The method for controlling the processing of titanium oxide in titanium alloy steel according to claim 1, wherein: and in the step 1-2, the mass percentage of TFe + MnO in the slag is less than 1.5%.
4. The processing method for controlling titanium oxide in titanium-alloy steel according to claim 1, wherein: in the step 1-1 or 1-2, the flow and pressure of argon blown from the bottom of the ladle are controlled when titanium wires are fed, so that the molten steel is ensured not to be exposed; the argon bottom blowing of the ladle selects the bottom blowing brick opposite to the wire feeding point to carry out weak stirring, so that the titanium enters the middle and lower parts of the ladle as soon as possible along with the descending flow.
5. The method for controlling the processing of titanium oxide in titanium alloy steel according to claim 1, wherein: in the step 1-1 or 1-2, a feeding guide pipe for feeding the titanium wire is inserted into the molten steel for wire feeding.
6. The method for controlling the processing of titanium oxide in titanium alloy steel according to claim 1, wherein: in the step 2-1, the argon blowing pipe is respectively connected to the middle impact area and the pouring area; the argon blowing time is 5-6 minutes.
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