CN207592770U - It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation - Google Patents
It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation Download PDFInfo
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- CN207592770U CN207592770U CN201721681604.2U CN201721681604U CN207592770U CN 207592770 U CN207592770 U CN 207592770U CN 201721681604 U CN201721681604 U CN 201721681604U CN 207592770 U CN207592770 U CN 207592770U
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- molten steel
- secondary oxidation
- stay fork
- seal ring
- trachea
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Abstract
The utility model discloses a kind of argon seal rings that packet submersed nozzle the rim of a bowl and filling pipe end junction secondary oxidation of steel in split can be effectively prevent during continuous casting, including stay fork and trachea, the stay fork is " Qian " type pipe structure, 49 ventholes are equipped on the inside of stay fork, the trachea is arranged on stay fork rear end gradually, with being connected inside stay fork inside the trachea, argon seal ring described in the utility model can effectively prevent the secondary oxidation of molten steel, ensure production process direct motion, improve Molten Steel Cleanliness simultaneously, and cost of manufacture is cheap, it is easy to operate, it can reuse.
Description
Technical field
The invention belongs to Ferrous Metallurgy continuous casting technology fields, and in particular to one kind can be effectively prevent during continuous casting
The device of packet submersed nozzle the rim of a bowl and filling pipe end junction secondary oxidation of steel in split.
Background technology
In cold-forging steel production process, if continuous casting working procedure molding casting effect is bad, air is in direct contact with molten steel, meeting
Cause the secondary oxidation phenomenon of molten steel.When molten steel enters tundish from ladle, and enters knot from tundish by submersed nozzle
In brilliant device, all there are the secondary oxidations of molten steel in whole process.Holo-Al content in cold-forging steel is generally higher, when tundish and leaching
Entering between the formula mouth of a river is free aspiration to enter, and the aluminium in molten steel is reacted with oxygen, and leading to the secondary oxidation of molten steel, to generate fusing point very high
Al2O3, nozzle clogging is caused to influence normal cast.The secondary oxidation of molten steel has many harm, mainly has：(1) molten steel is deteriorated
Opourability blocks nozzle clogging, and casting cannot be normally carried out；(2) alloying element in molten steel is caused to aoxidize, and generates and is mingled with
Object influences the degree of purity of molten steel；(3) Al formed2O3Submersed nozzle inner wall is adhered to, mouth of a river internal diameter is tapered into, works as water
Mouthful internal diameter it is small to the cast pulling rate for being insufficient for cold-forging steel when, molten steel can be gone out from immersion water gap bowl portion, and the mouth of a river is caused to return
Steel causes production accident.In the production of current cold-forging steel, usually two are prevented using gasket in immersion water gap bowl portion
Secondary oxidation uses the submersed nozzle sealed with argon.Wherein, gasket cannot play isolation air completely, it is easy to cause
The secondary oxidation of molten steel.Submersed nozzle with argon envelope in use, if argon envelope flow control is bad, be easy to cause argon
Gas is involved in inside the mouth of a river, causes mold liquid level double steel；In addition, the cost is relatively high for the submersed nozzle with argon envelope, argon encapsulation
Putting cannot reuse, and waste is serious.
Invention content
To solve the above problems, the invention discloses a kind of for preventing molten steel in the argon envelope of casting process secondary oxidation
Ring can effectively prevent the secondary oxidation of molten steel, ensure production process direct motion, while improve Molten Steel Cleanliness, and be fabricated to
This is cheap, easy to operate, can reuse.
In order to achieve the above objectives, the technical solution adopted in the present invention is：
It is a kind of to be used to prevent molten steel in the argon seal ring of continuous casting secondary oxidation, including stay fork and trachea, the stay fork
For " Qian " type pipe structure, stay fork inside is equipped with 4-9 venthole, and the trachea is arranged on stay fork rear end gradually, described
With being connected inside stay fork inside trachea.
As a modification of the present invention, 6 ventholes are equipped on the inside of the stay fork, there are 2 outlets on the inside of each edge
Hole.
As a modification of the present invention, the venthole is the circular hole of a diameter of 3mm.
As a modification of the present invention, the stay fork is the pipe fitting of diameter 6mm.
As a modification of the present invention, the trachea is the pipe fitting of diameter 10mm.
As a modification of the present invention, the stay fork and trachea junction arc transition.
As a modification of the present invention, the trachea rear end is equipped with control valve.
As a modification of the present invention, the stay fork is made by stainless steel tube.
Trachea is connected to tunger tube road during work, by argon flow amount by argon seal ring of the present invention with hose
It controls in 200L/min, stay fork is finally lain in a horizontal plane in the rim of a bowl upper end of submersed nozzle, at this point, argon gas in stay fork
By venthole be evenly distributed in submersed nozzle and in wrap around the connecting portion of the mouth of a river, play preferable sealing effect
Fruit.
The beneficial effects of the invention are as follows：
1st, argon envelope effect is good, can be very good to prevent molten steel from occurring two in tundish lower nozzle and submersed nozzle seam crossing
Secondary oxidation；
2nd, the mouth of a river can be prevented completely and returns steel, brought great convenience to the operation of worker；
It 3rd, will not be because in argon wind flow favourable opposition water inlet, causing mold liquid level double steel after argon seal ring is detached with the mouth of a river；
4th, installation is simple, is detached with submersed nozzle, the mouths of a river can be waited to be reused after all putting on.
5th, low manufacture cost may be reused, and be not easy to be scorched by molten steel, service life is long.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 uses schematic diagram for the present invention's.
Reference numerals list：
1st, stay fork, 2, trachea, 3, venthole, 4, control valve, 5, hose, 6, argon gas pipeline, 7, in wrap the mouth of a river,
8th, submersed nozzle.
Specific embodiment
With reference to the accompanying drawings and detailed description, the present invention is furture elucidated, it should be understood that following specific embodiments are only
For illustrating the present invention rather than limiting the scope of the invention.It should be noted that word " preceding " used in the following description,
" rear ", "left", "right", "up" and "down" refer to the direction in attached drawing, and word " interior " and " outer " refer respectively to direction or remote
Direction from particular elements geometric center.
As shown in Figure 1, it is of the present invention a kind of for preventing molten steel in the argon seal ring of casting process secondary oxidation, it is whole
Into " fork " shape, intermediate hollow is placed on submersed nozzle the rim of a bowl upper surface, as shown in Fig. 2, argon seal ring is followed by hose, passes through
Flowmeter is connected with factory argon gas pipeline, controls the aperture of control valve 4, by argon flow amount control in 200L/min, argon at this time
Argon gas wraps the connecting portion of the mouth of a river and submersed nozzle at compression ring venthole 3 in being evenly distributed on, and plays isolation air, prevents
The only effect of secondary oxidation of steel.
The technical means disclosed in the embodiments of the present invention is not limited only to the technological means disclosed in the above embodiment, further includes
By more than technical characteristic arbitrarily the formed technical solution of combination.
Claims (7)
1. a kind of be used to prevent molten steel in the argon seal ring of casting process secondary oxidation, it is characterised in that：Including stay fork and connect gas
Pipe, the stay fork are " Qian " type pipe structure, are equipped with 4-9 venthole on the inside of stay fork, the trachea is arranged on stay fork
Rear end gradually, connects inside the trachea with stay fork inside.
2. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：6 ventholes are equipped on the inside of the stay fork, there are 2 ventholes on the inside of each edge.
3. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：The venthole is the circular hole of a diameter of 3mm.
4. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：The stay fork is the pipe fitting of diameter 6mm.
5. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：The trachea is the pipe fitting of diameter 10mm.
6. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：The stay fork and trachea junction arc transition.
7. according to claim 1, a kind of in the argon seal ring of casting process secondary oxidation, feature exists for preventing molten steel
In：The trachea rear end is equipped with control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681604.2U CN207592770U (en) | 2017-12-06 | 2017-12-06 | It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721681604.2U CN207592770U (en) | 2017-12-06 | 2017-12-06 | It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation |
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| Publication Number | Publication Date |
|---|---|
| CN207592770U true CN207592770U (en) | 2018-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721681604.2U Active CN207592770U (en) | 2017-12-06 | 2017-12-06 | It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737914A (en) * | 2017-12-06 | 2018-02-27 | 江苏永钢集团有限公司 | It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation |
| CN110722148A (en) * | 2019-10-22 | 2020-01-24 | 芜湖新兴铸管有限责任公司 | Tundish argon gas replacement device and tundish argon gas replacement method |
-
2017
- 2017-12-06 CN CN201721681604.2U patent/CN207592770U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107737914A (en) * | 2017-12-06 | 2018-02-27 | 江苏永钢集团有限公司 | It is a kind of to be used to prevent molten steel in the argon seal ring of casting process secondary oxidation |
| CN110722148A (en) * | 2019-10-22 | 2020-01-24 | 芜湖新兴铸管有限责任公司 | Tundish argon gas replacement device and tundish argon gas replacement method |
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