Device and method for controlling thickness of covering slag layer in crystallizer

Abstract

The invention provides a device and method for controlling the thickness of a casting powder layer in a crystallizer, and relates to the technical field of control over the thickness of the casting powder layer in the crystallizer. Visible light spots can be formed on the surface of an object when the light irradiates the surface of the object; the height adjusting mechanism is connected with the other end of the supporting rod, the height adjusting mechanism is used for being fixed to one side of the outer portion of the crystallizer, and the height adjusting mechanism can adjust the height of the laser emitting component. Light rays can be emitted into the crystallizer from an upper opening of the crystallizer, and light spots are formed on the inner wall of the crystallizer or the upper surface of a slag layer in the crystallizer; the problems that in the prior art, a detection means for the thickness of the casting powder layer in the crystallizer is poor in effect, and the thickness of the casting powder layer in the crystallizer is difficult to control accurately are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of controlling the thickness of a protective slag layer in a crystallizer, and more specifically, relates to a device and a method for controlling the thickness of a protective slag layer in a crystallizer. Background Art

[0002] The mold slag plays two main roles in the continuous casting process: ensuring the smooth process and improving the surface quality of the ingot. The two major roles are mainly achieved by the five functions of the mold slag: thermal insulation, oxidation prevention, inclusion absorption, ingot lubrication, and heat transfer control. However, in order to achieve good use effects, the mold slag must have a liquid slag thickness that meets actual needs. A liquid slag layer that is too thick or too thin will cause longitudinal cracks on the surface of the ingot, and a too thin mold slag layer will also cause the risk of steel leakage in the crystallizer. Reasonable control of the total thickness of the mold slag in the crystallizer can ensure uniform melting of the mold slag, keep the liquid slag layer stable, and play a role in heat preservation.

[0003] At present, there is an online detection technology for the thickness of the protective slag layer in the crystallizer, but the investment cost is large, and the detection effect is unstable due to signal interference. Manual detection of the thickness of the protective slag layer has neither accurate detection effect nor safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for controlling the thickness of the protective slag layer in the crystallizer in view of the shortcomings of the prior art, so as to solve the problem that the detection means of the thickness of the protective slag layer in the crystallizer in the prior art are not effective and it is difficult to accurately control the thickness of the protective slag layer in the crystallizer.

[0005] In order to achieve the above object, the present invention provides a device for controlling the thickness of the protective slag layer in the crystallizer, comprising:

[0006] A support rod, one end of which is provided with a laser emitting component, which can emit light, and when the light hits the surface of an object, it can form a visible light spot on the surface of the object;

[0007] A height adjustment mechanism, wherein the height adjustment mechanism is connected to the other end of the support rod and is used to be fixed on the outer side of the crystallizer, and the height adjustment mechanism can adjust the height of the laser emitting component so that the light can be emitted into the interior of the crystallizer from the upper opening of the crystallizer and form the light spot on the inner wall of the crystallizer or the upper surface of the slag layer in the crystallizer.

[0008] Optionally, the axis of the support rod is an L-shaped broken line.

[0009] Optionally, the height adjustment mechanism includes a sleeve, and the other end of the support rod is movably inserted into the sleeve. A fastening screw is provided on one side of the sleeve, and the fastening screw can fasten the support rod in the sleeve.

[0010] Optionally, the sleeve is fixed on a tundish tanker.

[0011] Optionally, the laser emitting component is a laser pen.

[0012] The present invention also provides a method for controlling the thickness of a protective slag layer in a crystallizer, using the above-mentioned device for controlling the thickness of a protective slag layer in a crystallizer, comprising:

[0013] The height adjustment mechanism is fixed to the outer side of the crystallizer;

[0014] After pouring starts, the thickness of the slag layer in the crystallizer is set to the set thickness after the liquid level in the crystallizer stabilizes;

[0015] Turn on the laser emission component;

[0016] Adjust the height adjustment mechanism so that the light from the laser emitting component hits the junction between the upper surface of the protective slag layer and the inner wall of the crystallizer to form a light spot;

[0017] Control the amount of slag added according to the position of the light spot.

[0018] Optionally, the height adjustment mechanism is fixed to the tundish tanker.

[0019] Optionally, the thickness is set to 50-60 cm.

[0020] Optionally, the slag adding worker is at one side of the upper part of the crystallizer, and the light spot is projected on a side of the crystallizer away from the slag adding worker.

[0021] Optionally, the slag adding worker controls the amount of slag added according to the position of the light spot, so that the light spot is always at the junction of the upper surface of the protective slag layer and the inner wall of the crystallizer.

[0022] The present invention provides a device and method for controlling the thickness of a protective slag layer in a crystallizer, and the beneficial effects are as follows: the device for controlling the thickness of a protective slag layer in a crystallizer can be fixed on one side of the outside of the crystallizer through a height adjustment mechanism, and the position of a support rod and a laser emitting component connected to one end of the support rod is adjusted so that the light emitted by the laser emitting component can be shot into the interior of the crystallizer from the upper opening of the crystallizer and form a light spot, and after pouring starts and the liquid level in the crystallizer is stabilized, when the thickness of the slag layer in the crystallizer is set to a set thickness, the height adjustment mechanism can be adjusted so that the light of the laser emitting component hits the junction between the upper surface of the protective slag layer and the inner wall of the crystallizer and forms a light spot, at which time the light spot forms a calibrated position on the upper surface of the protective slag layer, if the thickness of the protective slag layer increases, the light spot will come to the upper surface of the protective slag layer, and if the thickness of the protective slag layer decreases, the light spot will come to the inner wall of the crystallizer, so the amount of slag added to the crystallizer can be conveniently controlled according to the position of the light spot, and the position of the light spot is always kept at the junction between the upper surface of the protective slag layer and the inner wall of the crystallizer, so as to avoid the protective slag layer being too large or too small in thickness.

[0023] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present invention.

[0025] Figure 1 A schematic structural diagram of a device for controlling the thickness of a protective slag layer in a crystallizer according to an embodiment of the present invention is shown.

[0026] Figure 2 A flow chart of a method for controlling the thickness of a protective slag layer in a crystallizer according to an embodiment of the present invention is shown.

[0027] Description of reference numerals:

[0028] 1. Support rod; 2. Laser emitting component; 3. Light; 4. Casing; 5. Fastening screws; 6. Crystallizer; 7. Protect the upper surface of the slag layer. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0030] like Figure 1 As shown, the present invention provides a device for controlling the thickness of the protective slag layer in a crystallizer, comprising:

[0031] A support rod 1, one end of which is provided with a laser emitting component 2, which can emit light 3, and when the light 3 hits the surface of an object, it can form a visible light spot on the surface of the object;

[0032] A height adjustment mechanism is connected to the other end of the support rod 1 and is used to be fixed on the outer side of the crystallizer 6. The height adjustment mechanism can adjust the height of the laser emitting component 2 so that the light 3 can be emitted into the interior of the crystallizer 6 from the upper opening of the crystallizer 6 and form a light spot on the inner wall of the crystallizer 6 or the upper surface of the slag layer in the crystallizer 6.

[0033] Specifically, in order to solve the problem that the detection method of the thickness of the protective slag layer in the crystallizer 6 in the prior art is not effective and it is difficult to accurately control the thickness of the protective slag layer in the crystallizer 6; the device for controlling the thickness of the protective slag layer in the crystallizer provided by the present invention can be fixed on one side of the outside of the crystallizer 6 through a height adjustment mechanism, and the position of the support rod 1 and the laser emitting component 2 connected to one end of the support rod 1 is adjusted, so that the light 3 emitted by the laser emitting component 2 can be emitted from the upper opening of the crystallizer 6 into the interior of the crystallizer 6 and form a light spot, and after the pouring starts, the thickness of the slag layer in the crystallizer 6 is measured after the liquid level in the crystallizer 6 is stabilized. When set to a set thickness, the height adjustment mechanism can be adjusted so that the light 3 of the laser emitting component 2 hits the junction between the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6 and forms a light spot. At this time, the light spot forms a calibrated position of the upper surface 7 of the protective slag layer. If the thickness of the protective slag layer increases, the light spot will come to the upper surface of the protective slag layer. If the thickness of the protective slag layer decreases, the light spot will come to the inner wall of the crystallizer 6. Therefore, the amount of slag added to the crystallizer 6 can be conveniently controlled according to the position of the light spot, so as to keep the position of the light spot always at the junction of the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6 to avoid the thickness of the protective slag layer being too large or too small.

[0034] Optionally, the axis of the support rod 1 is in an L-shaped broken line shape.

[0035] Specifically, the support rod 1 is L-shaped, so that the laser emitting component 2 installed at one end of the support rod 1 can emit light 3 from top to bottom, and make the light 3 pass through the upper opening of the crystallizer 6 and enter the inside of the crystallizer 6.

[0036] In this embodiment, the support rod 1 forms an obtuse angle at the bending point.

[0037] Optionally, the height adjustment mechanism includes a sleeve 4, the other end of the support rod 1 is movably inserted into the sleeve 4, and a fastening screw 5 is provided on one side of the sleeve 4, and the fastening screw 5 can fasten the support rod 1 in the sleeve 4.

[0038] Specifically, the sleeve 4 and the support rod 1 can be made of metal material, such as steel. The other end of the support rod 1 can slide in the sleeve 4 to adjust the height of the laser emitting component 2 at one end of the support rod 1, and then adjust the position of the light spot in the crystallizer 6. After adjusting the position, the support rod 1 and the laser emitting component 2 can be fixed by tightening the screws 5.

[0039] Optionally, the sleeve 4 is fixed on a tundish tanker.

[0040] Specifically, each production line generally has two intermediate tank trucks, and a sleeve 4 can be fixed on each intermediate tank truck. The support rod 1 with the laser emitting component 2 can be installed on the intermediate tank truck put into production. The production position of the intermediate tank truck and its relative position relationship with respect to the crystallizer 6 make it suitable for fixing the laser emitting component 2 on the intermediate tank truck.

[0041] Optionally, the laser emitting component 2 is a laser pen.

[0042] Specifically, a laser pen is a laser pointer that can emit red light, green light, blue light, blue-violet light, etc., can form a light spot, and play an indicating role.

[0043] like Figure 2 As shown, the present invention also provides a method for controlling the thickness of the protective slag layer in the crystallizer, using the above-mentioned device for controlling the thickness of the protective slag layer in the crystallizer, comprising:

[0044] The height adjustment mechanism is fixed to one side of the outside of the crystallizer 6;

[0045] After pouring starts, the thickness of the slag layer in the crystallizer 6 is set to a set thickness after the liquid level in the crystallizer 6 is stabilized;

[0046] Turn on the laser emitting component 2;

[0047] Adjust the height adjustment mechanism so that the light 3 of the laser emitting component 2 hits the junction between the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6 and forms a light spot;

[0048] Control the amount of slag added according to the position of the light spot.

[0049] Specifically, when the thickness of the protective slag layer in the crystallizer 6 is controlled by using the above-mentioned device for controlling the thickness of the protective slag layer in the crystallizer, first fix the height adjustment mechanism in a suitable position, prepare to adjust the support rod 1 with the laser emitting component 2 connected to the height adjustment mechanism, and then add a set amount of protective slag to the crystallizer 6 after the liquid level in the crystallizer 6 is stabilized after pouring, and set the thickness of the slag layer in the crystallizer 6 to the set thickness. This step can be completed by the slag adding worker, and the amount of slag added determines the initial thickness of the protective slag layer; then turn on the laser emitter, adjust The height adjustment mechanism is used to adjust the position of the light spot so that the light spot hits the junction between the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6. At this time, the light spot forms a calibrated position of the upper surface 7 of the protective slag layer. If the thickness of the protective slag layer increases, the light spot will come to the upper surface of the protective slag layer. If the thickness of the protective slag layer decreases, the light spot will come to the inner wall of the crystallizer 6. Therefore, the amount of slag added to the crystallizer 6 can be conveniently controlled according to the position of the light spot, so as to keep the position of the light spot always at the junction of the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6 to avoid the thickness of the protective slag layer being too large or too small.

[0050] Optionally, the height adjustment mechanism is fixed to the tundish tanker.

[0051] Specifically, each production line generally has two intermediate tank trucks, and a sleeve 4 can be fixed on each intermediate tank truck. The support rod 1 with the laser emitting component 2 can be installed on the intermediate tank truck put into production. The production position of the intermediate tank truck and its relative position relationship with respect to the crystallizer 6 make it suitable for fixing the laser emitting component 2 on the intermediate tank truck.

[0052] Optionally, the thickness is set to 50-60 cm.

[0053] Specifically, it is better to maintain the thickness of the protective slag layer within a range close to the set thickness.

[0054] Optionally, the slag adding worker is at one side of the upper part of the crystallizer 6, and the light spot is hit on the side of the crystallizer 6 away from the slag adding worker.

[0055] Specifically, the light spot is placed at a position that is convenient for a slag adding worker to observe the light spot, so that the slag adding worker can add slag according to the position of the light spot and control the thickness of the protective slag layer.

[0056] Optionally, the slag adding worker controls the amount of slag added according to the position of the light spot, so that the light spot is always at the junction of the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6.

[0057] Specifically, the slag adder adds slag on one side of the upper part of the crystallizer 6. The amount of slag added by the slag adder can be determined according to the position of the light spot. The purpose is to make the light spot always be at the junction of the upper surface 7 of the protective slag layer and the inner wall of the crystallizer 6. In this way, the thickness of the protective slag layer can be maintained within a range close to the set thickness, which has a better protective slag effect.

[0058] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A device for controlling the thickness of the protective slag layer in a crystallizer, characterized in that: include: A support rod, one end of which is provided with a laser emitting component, which can emit light, and when the light hits the surface of an object, it can form a visible light spot on the surface of the object; A height adjustment mechanism, wherein the height adjustment mechanism is connected to the other end of the support rod and is used to be fixed on the outer side of the crystallizer, and the height adjustment mechanism can adjust the height of the laser emitting component so that the light can be emitted into the interior of the crystallizer from the upper opening of the crystallizer and form the light spot on the inner wall of the crystallizer or the upper surface of the slag layer in the crystallizer.

2. The device for controlling the thickness of the protective slag layer in the crystallizer according to claim 1, characterized in that: The axis of the support rod is in an L-shaped broken line shape.

3. The device for controlling the thickness of the protective slag layer in the crystallizer according to claim 1, characterized in that: The height adjustment mechanism comprises a sleeve, the other end of the support rod is movably inserted into the sleeve, and a fastening screw is arranged on one side of the sleeve, and the fastening screw can fasten the support rod in the sleeve.

4. The device for controlling the thickness of the protective slag layer in the crystallizer according to claim 3, characterized in that: The sleeve is fixed on the intermediate tank car.

5. The device for controlling the thickness of the protective slag layer in the crystallizer according to claim 1, characterized in that: The laser emitting component is a laser pen.

6. A method for controlling the thickness of a protective slag layer in a crystallizer, using the device for controlling the thickness of a protective slag layer in a crystallizer according to any one of claims 1 to 5, characterized in that: include: The height adjustment mechanism is fixed to the outer side of the crystallizer; After pouring starts, the thickness of the slag layer in the crystallizer is set to the set thickness after the liquid level in the crystallizer stabilizes; Turn on the laser emission component; Adjust the height adjustment mechanism so that the light from the laser emitting component hits the junction between the upper surface of the protective slag layer and the inner wall of the crystallizer to form a light spot; Control the amount of slag added according to the position of the light spot.

7. The method for controlling the thickness of the protective slag layer in the crystallizer according to claim 6, characterized in that: Fasten the height adjustment mechanism to the tundish tanker.

8. The method for controlling the thickness of the protective slag layer in the crystallizer according to claim 6, characterized in that: Set the thickness to 50-60cm.

9. The method for controlling the thickness of the protective slag layer in the crystallizer according to claim 6, characterized in that: The slag adder is on one side of the upper part of the crystallizer, and the light spot is hit on the side of the crystallizer away from the slag adder.

10. The method for controlling the thickness of the protective slag layer in the crystallizer according to claim 9, characterized in that: The slag adding worker controls the amount of slag added according to the position of the light spot, so that the light spot is always at the junction of the upper surface of the protective slag layer and the inner wall of the crystallizer.

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