CN210023749U - Novel tundish cover capable of blowing argon - Google Patents
Novel tundish cover capable of blowing argon Download PDFInfo
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- CN210023749U CN210023749U CN201920673031.1U CN201920673031U CN210023749U CN 210023749 U CN210023749 U CN 210023749U CN 201920673031 U CN201920673031 U CN 201920673031U CN 210023749 U CN210023749 U CN 210023749U
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Abstract
The utility model discloses a novel can blow middle be built by contract of argon, including middle be built by contract body, be provided with molten steel filling hole, temperature measurement charge door, stopper stick hole on the middle be built-in branch argon gas pipeline has in middle be built by contract body one side, the one end of branch argon gas pipeline is passed through quick change coupler and is connected with the argon gas trunk line, the other end of branch argon gas pipeline is pre-buried this internal a plurality of branch road pipelines of middle be built by contract, each inside the end direction of branch road pipeline is aimed at the middle package down, extend to simultaneously the bottom outside of middle be built by contract body. Its application method is also disclosed. The utility model is simple in operation, it is less to the equipment transformation, can implement device and technology that the molten steel can receive argon protection in the middle of the casting machine casting in-process pouring simultaneously, can effectual reduction continuous casting process molten steel oxygenation increase nitrogen's degree, promoted the cleanliness factor control level of molten steel, laid a good foundation for the development of producing high-grade steel.
Description
Technical Field
The utility model relates to a novel tundish cover capable of blowing argon.
Background
In the conventional continuous casting process, molten steel provided by smelting needs to be poured into a tundish of a casting machine, and then is successfully cast into a steel billet after being cooled in a crystallizer and a segment stage (see fig. 1). When a first furnace steel ladle is injected into the tundish 1, the liquid level of molten steel begins to rise, then an operator adds a covering agent into the tundish 1, the covering agent is spread on the surface of the molten steel, oxygen and nitrogen are prevented from being increased after the molten steel is contacted with air, and impurities in the molten steel can be adsorbed. However, because the molten steel is not protected against oxidation during the period from the beginning of pouring the molten steel into the tundish 1 to the time of adding the covering agent, and the molten steel level in the tundish is low during the period of adding the covering agent, the molten steel flows along with the structure in the tundish, the liquid level greatly fluctuates, the covering agent is turned over, the molten steel continuously contacts with air, the molten steel is seriously oxidized during the casting start period of the casting machine, and a billet head with a certain length needs to be cut off during the production of various types of steel. In addition, in the subsequent casting process of the whole period, because the covering agent can not completely isolate air, the air can be slowly transferred into the molten steel through the covering agent, and the molten steel is oxidized to a certain degree.
If inert gas can be continuously introduced into the tundish, the air in the tundish can be discharged because the density of the argon is higher than that of the air, and the process is implemented in the whole production process, so that the oxygen and nitrogen increasing of the molten steel caused by the contact of the molten steel and the air can be effectively avoided. Therefore, the device and the process can be operated conveniently, the equipment is less in modification, and meanwhile, the device and the process can be used for protecting the molten steel in the tundish from argon in the casting process of the casting machine, so that the oxygen and nitrogen increasing degree of the molten steel in the continuous casting process can be effectively reduced, the cleanliness control level of the molten steel is improved, and a foundation is laid for the development of producing high-grade steel. Meanwhile, the length of the head blank cutting waste is reduced, and the production and manufacturing cost is reduced.
In general, the following two production methods are generally adopted in conventional continuous casting production, namely: the method is not protected by argon gas, casting production is directly carried out, and a part of a blank head which is oxidized seriously and has a certain length is cut off. The second method comprises the following steps: and placing a plurality of prefabricated parts with argon holes in the temperature measuring and feeding holes above the tundish cover for a long time to blow argon.
However, the above two methods have the following drawbacks:
the method comprises the following steps: molten steel is not protected by argon, the casting machine is seriously oxidized in the casting process, a billet head with a certain length needs to be cut off, the waste of materials is caused, and the production and manufacturing cost is improved.
The second method comprises the following steps: the prefabricated parts with the argon holes are placed in the temperature measuring and charging holes of the tundish for a long time, so that the temperature measuring and charging operations in the production process are hindered, the labor intensity of operators is improved, meanwhile, because a plurality of prefabricated parts have more argon pipes, and in addition, pipelines such as other temperature measuring, sampling and accident treatment oxygen pipelines in the tundish area are easy to wind and trip the operators, and the danger degree of the operators working in the high-temperature area is improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims to provide a novel tundish cover capable of blowing argon.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the utility model provides a novel can blow middle be built by contract of argon, includes middle be built by contract body, be provided with molten steel filling hole, temperature measurement charge door, stopper stick hole on the middle be built-in branch argon gas pipeline that has in middle be built by contract body one side, the one end of branch argon gas pipeline is passed through quick change coupler and is connected with the argon gas trunk line, the other end of branch argon gas pipeline is pre-buried this internal a plurality of branch road pipelines of middle be built by contract, each the end direction of branch road pipeline is inside the middle package of aiming at down, extends to simultaneously the bottom outside of middle be built by contract body.
Furthermore, the other end of the branch argon pipeline is connected with 3 branch pipelines which are pre-embedded in the tundish cover body.
Furthermore, the connecting end of the branch pipeline is perpendicular to the branch argon pipeline.
Further, 3 branch pipelines are uniformly distributed in the tundish cover body.
Further, each of the branch lines is disposed in parallel.
The application method of the novel argon-blowing tundish cover comprises the following steps: before the pouring of the tundish, two ends of the quick connector are connected, argon reaches each area in the tundish through each branch of the pipeline, air in the tundish is exhausted through the argon, an inert gas protective atmosphere is formed in the tundish, and then the pouring process such as the pouring of molten steel is carried out.
Further, the argon blowing state is kept all the time in the whole production process, so that the upper surface of the molten steel is always in an inert protective atmosphere.
Compared with the prior art, the utility model discloses a beneficial technological effect:
the utility model is simple in operation, it is less to the equipment transformation, can implement device and technology that molten steel can receive argon protection in the middle of the casting machine casting in-process pouring ladle simultaneously, can effectual reduction continuous casting process molten steel oxygenation increase nitrogen's degree, promoted the cleanliness factor control level of molten steel, laid a good foundation for the development of producing high-grade steel. Meanwhile, the length of the head blank cutting waste is reduced, and the production and manufacturing cost is reduced. Meanwhile, only one external pipeline is needed, and the quick change connector can be used for quickly operating, so that the messy pipeline of the working area of an operator is avoided, and the working safety is improved.
Drawings
The present invention will be further explained with reference to the following description of the drawings.
FIG. 1 is a production explanatory view of a conventional continuous casting process
FIG. 2 is a diagram illustrating a novel argon-blowable tundish cover configuration;
FIG. 3 is a side view of the internal structure of a novel argon-blowable tundish cover pipeline;
description of reference numerals: 1-tundish cover body; 2-molten steel injection hole; 3-measuring temperature and feeding holes; 4-stopper rod hole; 5-branched argon line; 6-quick change coupler; 7-argon main pipeline; 8-end; 9-by-pass line.
Detailed Description
As shown in fig. 2 and 3, a novel tundish cover capable of blowing argon, comprises a tundish cover body 1, a molten steel injection hole 2, a temperature measurement charging hole 3 and a stopper rod hole 4 are arranged on the tundish cover body 1, a branch argon pipeline 5 is pre-embedded in one side of the tundish cover body 1, one end of the branch argon pipeline 5 is connected with an argon main pipeline 7 through a quick-change connector 6, the other end of the branch argon pipeline 5 is pre-embedded in a plurality of branch pipelines 9 in the tundish cover body, and each branch pipeline 9 has 8 directions of ends aligned downwards inside the tundish and extends to the outside of the bottom of the tundish cover body 1.
In this embodiment, the other end of branch argon gas pipeline 5 is connected pre-buried 3 branch pipeline in the middle ladle cover body, 3 branch pipeline 9 is in evenly distributed in the middle ladle cover body 1. The connecting ends of the branch pipelines 9 are perpendicular to the branch argon pipelines 5, and the branch pipelines 9 are arranged in parallel.
An application method of a novel tundish cover capable of blowing argon comprises the steps that before a tundish is poured, an operator connects two ends of a quick connector E, argon reaches each region in the tundish through each branch of a pipeline, air in the tundish is exhausted through the argon, an inert gas protective atmosphere is formed in the tundish, then casting processes such as molten steel injection and the like are carried out, and oxygen and nitrogen increasing of the molten steel caused by contact of the molten steel and the air can be avoided. Meanwhile, the argon blowing state can be kept all the time in the whole production process, so that the upper surface of the molten steel is always in an inert protective atmosphere, air is isolated, and the air is prevented from being slowly diffused like steel.
The first embodiment is as follows:
after the novel tundish cover capable of blowing argon is implemented on a wide and thick plate production line and the application method thereof, the oxidation degree of molten steel poured by a casting machine is obviously reduced, the pollution degree of a head blank is reduced, the waste cutting length of the head blank is reduced to 2.5 meters from 4 meters before implementation, the loss of materials is saved, and the production and manufacturing cost is reduced.
The second embodiment:
after the novel tundish cover capable of blowing argon and the application method thereof are implemented on a wide and thick plate production line, the oxygenation of molten steel of a tundish of a casting machine is changed from a control level of 5ppm to a control level of 2ppm, the cleanliness of the molten steel is obviously improved, and the implementation effect is obvious.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.
Claims (5)
1. The utility model provides a novel can blow middle be built by contract of argon, a serial communication port, including middle be built by contract body, be provided with molten steel filling hole, temperature measurement charge door, stopper stick hole on the middle be built-in branch argon gas pipeline that has in middle be built by contract body one side, the one end of branch argon gas pipeline is passed through quick change coupler and is connected with the argon gas trunk line, the other end of branch argon gas pipeline is pre-buried this internal a plurality of branch pipeline of middle be built by contract, each the end direction of branch pipeline is aimed at inside the middle package down, extends to simultaneously the bottom outside of middle be built by contract body.
2. The novel tundish cover capable of blowing argon according to claim 1, wherein the other end of the branch argon pipeline is connected with 3 branch pipelines embedded in the tundish cover body.
3. The novel argon-blowable tundish cover according to claim 2, wherein the connecting end of the branch line is disposed perpendicular to the branch argon line.
4. The novel argon-blowable tundish cover according to claim 2, wherein 3 of said branch lines are uniformly distributed within the tundish cover body.
5. The novel argon-blowable tundish cover according to claim 2, wherein each of the branch lines are arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920673031.1U CN210023749U (en) | 2019-05-13 | 2019-05-13 | Novel tundish cover capable of blowing argon |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920673031.1U CN210023749U (en) | 2019-05-13 | 2019-05-13 | Novel tundish cover capable of blowing argon |
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| CN210023749U true CN210023749U (en) | 2020-02-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102749A (en) * | 2019-05-13 | 2019-08-09 | 包头钢铁（集团）有限责任公司 | It is a kind of it is novel can Argon pouring basket lid and its application method |
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2019
- 2019-05-13 CN CN201920673031.1U patent/CN210023749U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102749A (en) * | 2019-05-13 | 2019-08-09 | 包头钢铁（集团）有限责任公司 | It is a kind of it is novel can Argon pouring basket lid and its application method |
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