Starting plug dummy ingot cooling material processing device and method for slab continuous casting machine

Abstract

The invention relates to the technical field of ferrous metallurgy continuous casting billet production, in particular to a slab continuous casting machine starting plug dummy ingot cooling material machining device and method. A driving device is fixedly connected to one side of the top of the base, a round steel curling rod is fixedly connected to the tail end of a main shaft of the driving device, a protective cover is arranged on the outer side of the round steel curling rod, and the bottom of the protective cover is fixedly connected with the base; a limiting sleeve is further fixedly connected to the outer side of the round steel curling rod; the contact area of the spiral round steel and molten steel is increased, the molten steel can be rapidly cooled, a blank shell is formed, and the situation of steel leakage is not prone to occurring when the pulling speed is increased; the self-made spiral machining device can greatly improve the machining efficiency, reduce the labor intensity of workers, and is low in raw material cost and easy to machine.

Description

Technical Field

[0001] The invention relates to the technical field of steel metallurgical continuous casting slab production, and in particular to a slab continuous casting machine start-up plug ingot cooling material processing device and method. Background Art

[0002] Plugging the dummy rod at the start-up of the slab continuous casting machine is an important production process to prevent steel leakage and dummy rod pull-off accidents during startup and to ensure stable and smooth production. After the dummy rod and the dummy rod head reach the middle of the crystallizer and stabilize, the dummy rod plugging operation is carried out, that is, asbestos rope is plugged in the gap between the dummy rod and the copper plate, 15-25mm thick steel chips are evenly spread on the bottom, and then some flat irons are arranged on it. The purpose is to prevent the molten steel from leaking out along the gap between the dummy rod and the crystallizer, and to cool the molten steel poured into the crystallizer, so that it can quickly form a billet shell, which is convenient for the billet to be pulled out along the dummy rod, and the subsequent billet can be smoothly separated from the dummy rod, thereby completing the startup process of billet production.

[0003] During the pouring process, the abnormal situation of low molten steel temperature is often encountered. The molten steel will quickly form nodules. At this time, the drawing speed needs to be increased. The cooling effect of the coolant with flat iron bottom is poor. The bottom billet fails to reach a certain thickness of solidified billet shell. After increasing the drawing speed, it is easy to leak the billet shell, causing steel leakage accidents, seriously affecting the smooth production and causing economic losses to the enterprise. Therefore, in view of the above problems, a slab continuous casting machine start-up plug ingot cooling material processing device and method are proposed. Summary of the invention

[0004] The object of the present invention is to provide a device and method for processing cooling material for the start-up plug of a slab continuous casting machine, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] As an optional solution of the slab continuous casting machine start-up plug start-up coolant processing device and method of the present invention, wherein: a slab continuous casting machine start-up plug start-up coolant processing device and method, comprising a base and a driving device;

[0007] A driving device is fixedly connected to one side of the top of the base, and a round steel curling rod is fixedly connected to the end of the main shaft of the driving device, and a protective cover is arranged on the outside of the round steel curling rod, and the bottom of the protective cover is fixedly connected to the base;

[0008] The outer side of the round steel curling rod is also fixedly connected with a limiting sleeve.

[0009] As an optional solution of the slab continuous casting machine start-up plug ingot cooling material processing device and method described in the present invention, wherein: the top of the base is fixedly connected to a support frame, and the top of the support frame is rotatably connected to a round steel bending roller.

[0010] As an optional solution of the device and method for processing cooling material of a slab continuous casting machine start-up plug, the present invention, wherein: the support frame is arranged in a C shape.

[0011] As an optional solution of the device and method for processing cooling material of the slab continuous casting machine start-up plug described in the present invention, the end of the protective cover away from the driving device is open.

[0012] When in use, the round steel is inserted into the limit sleeve and the round steel curling rod is driven to rotate by starting the driving device. The round steel can be prevented from shaking under the action of the support frame and the round steel bending roller to ensure the curling quality. The spiral round steel can be easily taken out through one side of the protective cover, and the protective cover serves the purpose of protection. The spiral round steel increases the contact area with the molten steel, which can cool the molten steel faster to form a billet shell, and is less likely to leak steel when the pulling speed increases. The homemade spiral processing device can greatly improve the processing efficiency, reduce the labor intensity of workers, and has low raw material costs and easy processing.

[0013] As an optional solution of the device and method for processing cooling material of the slab continuous casting machine start-up plug, the use steps are as follows:

[0014] Step 1: Cooling material processing: The round steel curling rod is driven to rotate by a driving device so that the limiting sleeve on the outer side of the round steel curling rod is set downward;

[0015] Step 2: Unloading: insert the round steel into the limiting sleeve, and the outer side of the round steel contacts the round steel bending roller;

[0016] Step 3: Winding: Start the driving device to drive the round steel curling rod to rotate, the round steel curling rod drives the limit sleeve to rotate, and the limit sleeve can drive the round steel to rotate around the round steel curling rod, so that it is wound to form a spiral round steel;

[0017] Step 4: Cutting: The spiral round steel is rotated in the opposite direction to separate the spiral round steel from the limit sleeve, and then the spiral round steel is pulled away from the driving device to separate it from the round steel curling rod, and the processing is completed;

[0018] Step 5: After the dummy rod head is inserted into the middle of the crystallizer, a layer of 15-25mm thick steel chips is spread on each surface;

[0019] Step 6: Lay round steel inside the end of the crystallizer;

[0020] Step 7: In step 6, the laying method of the spiral round steel is as follows: 4-6 sections of spiral round steel are placed at both ends of the crystallizer, and the spiral round steel is required to be in close contact with the inner wall of the crystallizer. No spiral round steel is placed inside the dovetail groove, and 2 long flat irons are placed obliquely in the dovetail groove;

[0021] Step 8: Place 2-3 spiral round steel bars on the end face of the ingot head in the length direction at the edge of the dovetail groove, and also place 2-3 spiral round steel bars on the flat iron at the upper part of the dovetail groove.

[0022] Multiple spiral round steels are placed at both ends of the crystallizer, with more placed at the ends. Because the cooling intensity at the ends is lower, the spiral round steels are required to be in close contact with the inner wall of the crystallizer. The purpose of "placing two long flat irons obliquely into the dovetail groove" is to prevent the spiral round steels at the edge and upper part of the dovetail groove from falling into the dovetail groove. No spiral round steels are placed in the dovetail groove because there is less molten steel in the dovetail groove, and one side of the inner wall is in direct contact with the cooling wall of the crystallizer, so the molten steel can solidify faster. Placing too much coolant in it is not conducive to forming a complete drag hook device inside, which is not conducive to "ingot guiding".

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The spiral round steel provided in the present invention increases the contact area with molten steel, can cool the molten steel faster to form a shell, and is less likely to leak steel when the pulling speed is increased; the homemade spiral processing device can greatly improve processing efficiency, reduce the labor intensity of workers, and has low raw material cost and easy processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a device and method for processing cooling material of a start-up plug of a slab continuous casting machine;

[0026] Figure 2 It is a structural schematic diagram of a crystallizer;

[0027] Figure 3 It is a schematic diagram of the overall structure of the present invention.

[0028] In the figure: 1. base; 2. driving device; 3. round steel curling rod; 4. protective cover; 5. support frame; 6. round steel bending roller; 7. limit sleeve. DETAILED DESCRIPTION

[0029] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 , the present invention provides a technical solution:

[0030] A slab continuous casting machine start-up plug ingot cooling material processing device and method, comprising a base 1 and a driving device 2;

[0031] A driving device 2 is fixedly connected to one side of the top of the base 1, and a round steel curling rod 3 is fixedly connected to the end of the main shaft of the driving device 2, and a protective cover 4 is arranged on the outside of the round steel curling rod 3, and the bottom of the protective cover 4 is fixedly connected to the base 1;

[0032] The outer side of the round steel curling rod 3 is also fixedly connected with a limiting sleeve 7 .

[0033] The top of the base 1 is fixedly connected to a support frame 5 , and the top of the support frame 5 is rotatably connected to a round steel bending roller 6 .

[0034] The support frame 5 is arranged in a C shape.

[0035] One end of the protective cover 4 away from the driving device 2 is open.

[0036] At present, during the pouring process, the equipment often encounters the abnormal situation of low molten steel temperature, and the molten steel will quickly form nodules. At this time, the drawing speed needs to be increased. The cooling effect of the cooling material with flat iron bottom is poor, and the bottom billet fails to reach a certain thickness of solidified billet shell. After increasing the drawing speed, it is easy to pull out the billet shell, causing steel leakage accidents, seriously affecting the smooth production and causing economic losses to the enterprise. When in use, by inserting the round steel into the limit sleeve 7, the round steel curling rod 3 can be driven to rotate by starting the driving device 2, and the round steel shaking can be avoided under the action of the support frame 5 and the round steel bending roller 6 to ensure the curling quality, and the spiral round steel can be easily taken out through one side of the protective cover 4, and the protective cover 4 plays a protective purpose. The spiral round steel increases the contact area with the molten steel, which can cool the molten steel faster to form a billet shell, and it is not easy to leak steel when the drawing speed increases; the homemade spiral processing device can greatly improve the processing efficiency, reduce the labor intensity of workers, and has low raw material cost and easy processing.

[0037] The above usage steps are as follows:

[0038] Step 1: Cooling material processing: The round steel curling rod 3 is driven to rotate by the driving device 2 so that the limiting sleeve 7 on the outer side of the round steel curling rod 3 is arranged facing downward;

[0039] Step 2: Unloading: insert the round steel into the limiting sleeve 7, and the outer side of the round steel contacts the round steel bending roller 6;

[0040] Step 3: Winding: Start the driving device 2 to drive the round steel curling rod 3 to rotate, and the round steel curling rod 3 drives the limiting sleeve 7 to rotate, and the limiting sleeve 7 can drive the round steel to rotate around the round steel curling rod 3, so that it is wound to form a spiral round steel;

[0041] Step 4: Cutting: The spiral round steel is rotated in the opposite direction to separate the spiral round steel from the limiting sleeve 7, and then the spiral round steel is pulled away from the driving device 2 to separate it from the round steel curling rod 3, and the processing is completed;

[0042] Step 5: After the dummy rod head is inserted into the middle of the crystallizer, a layer of 15-25mm thick steel chips is spread on each surface;

[0043] Step 6: Lay round steel inside the end of the crystallizer;

[0044] Step 7: In step 6, the laying method of the spiral round steel is as follows: 4-6 sections of spiral round steel are placed at both ends of the crystallizer, and the spiral round steel is required to be in close contact with the inner wall of the crystallizer. No spiral round steel is placed inside the dovetail groove, and 2 long flat irons are placed obliquely in the dovetail groove;

[0045] Step 8: Place 2-3 spiral round steel bars on the end face of the ingot head in the length direction at the edge of the dovetail groove, and also place 2-3 spiral round steel bars on the flat iron at the upper part of the dovetail groove.

[0046] Multiple spiral round steels are placed at both ends of the crystallizer, with more placed at the ends. Because the cooling intensity at the ends is lower, the spiral round steels are required to be in close contact with the inner wall of the crystallizer. The purpose of "placing two long flat irons obliquely into the dovetail groove" is to prevent the spiral round steels at the edge and upper part of the dovetail groove from falling into the dovetail groove. No spiral round steels are placed in the dovetail groove because there is less molten steel in the dovetail groove, and one side of the inner wall is in direct contact with the cooling wall of the crystallizer, so the molten steel can solidify faster. Placing too much coolant in it is not conducive to forming a complete drag hook device inside, which is not conducive to "ingot guiding".

[0047] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A slab continuous casting machine start-up plug ingot cooling material processing device, characterized in that: It comprises a base (1) and a driving device (2); A driving device (2) is fixedly connected to one side of the top of the base (1), and a round steel curling rod (3) is fixedly connected to the end of the main shaft of the driving device (2), and a protective cover (4) is arranged on the outer side of the round steel curling rod (3), and the bottom of the protective cover (4) is fixedly connected to the base (1); The outer side of the round steel curling rod (3) is also fixedly connected to a limiting sleeve (7).

2. A slab continuous casting machine start-up plug ingot cooling material processing device according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a support frame (5), and the top of the support frame (5) is rotatably connected to a round steel bending roller (6).

3. A slab continuous casting machine start-up plug ingot cooling material processing device according to claim 2, characterized in that: The support frame (5) is arranged in a C shape.

4. A slab continuous casting machine start-up plug ingot cooling material processing device according to claim 1, characterized in that: The end of the protective cover (4) away from the driving device (2) is open.

5. The method for processing the cooling material of the slab continuous casting machine start-up plug according to any one of claims 1 to 4, characterized in that: The usage steps are as follows: Step 1: Cooling material processing: The round steel curling rod (3) is driven to rotate by the driving device (2) so that the limiting sleeve (7) on the outer side of the round steel curling rod (3) is arranged facing downward; Step 2: Unloading: insert the round steel into the limiting sleeve (7), and the outer side of the round steel contacts the round steel bending roller (6); Step 3: Winding and forming: starting the driving device (2) to drive the round steel curling rod (3) to rotate, the round steel curling rod (3) drives the limiting sleeve (7) to rotate, and the limiting sleeve (7) can drive the round steel to rotate around the round steel curling rod (3), so that the round steel is wound to form a spiral round steel; Step 4: Cutting: The spiral round steel is rotated in the opposite direction to separate the spiral round steel from the limiting sleeve (7), and then the spiral round steel is pulled away from the driving device (2) to separate it from the round steel curling rod (3), and the processing is completed; Step 5: After the dummy rod head is inserted into the middle of the crystallizer, a layer of 15-25mm thick steel chips is spread on each surface; Step 6: Lay round steel inside the end of the crystallizer; Step 7: In step 6, the laying method of the spiral round steel is as follows: 4-6 sections of spiral round steel are placed at both ends of the crystallizer, and the spiral round steel is required to be in close contact with the inner wall of the crystallizer. No spiral round steel is placed inside the dovetail groove, and 2 long flat irons are placed obliquely in the dovetail groove; Step 8: Place 2-3 spiral round steel bars on the end face of the ingot head in the length direction at the edge of the dovetail groove, and also place 2-3 spiral round steel bars on the flat iron at the upper part of the dovetail groove.

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