CN115647308A - Casting roll of thin strip steel continuous casting equipment - Google Patents
Casting roll of thin strip steel continuous casting equipment Download PDFInfo
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- CN115647308A CN115647308A CN202211077993.3A CN202211077993A CN115647308A CN 115647308 A CN115647308 A CN 115647308A CN 202211077993 A CN202211077993 A CN 202211077993A CN 115647308 A CN115647308 A CN 115647308A
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Abstract
The invention discloses a casting roll of thin strip steel continuous casting equipment, belonging to the technical field of thin strip steel production equipment; the pair of shaft heads are symmetrically and fixedly connected to two ends of the roller body; in the crystallization roller that this application provided, the roll body is tube structure, and, the roll body both ends are passed through the bolt and are connected with the spindle nose, the crystallization roller is including the left spindle nose of roll body that relatively independent set up promptly, spindle nose and the roll body triplex on roll body right side, consequently, can regard the alloy copper sheathing as holistic roll body in practical application, when the alloy copper sheathing after coping reaches scrapping many times, can separate alloy copper sheathing and spindle nose through dismantling the bolt, this dismantlement process degree of difficulty is little and the spindle nose is difficult for receiving the damage, therefore the crystallization roller that this application provided is convenient for dismantle condemned alloy copper sheathing fast, and do not influence the reuse of all the other parts.
Description
Technical Field
The invention relates to the technical field of thin strip steel production equipment, in particular to a casting roll of thin strip steel continuous casting equipment.
Background
It is known in thin strip continuous casting plants to introduce molten metal between a pair of counter-rotating horizontal crystallization rolls, inside which cooling water is continuously supplied to cool the surfaces of the crystallization rolls, so that the molten metal solidifies on the moving roll surfaces and is simultaneously brought into the roll gap between the rolls to produce a metal strip product delivered downwardly from the roll gap.
When the molten metal contacts with the surface of the crystallization roller, the temperature is over 1500 ℃, a large amount of heat is transferred to the crystallization roller through the surface contact, so that the crystallization roller needs to be cooled by a large amount of cooling water in the crystallization roller. On the other hand, during continuous operation, molten metal is continuously contacted with the surface of the crystallization roller, so that the surface of the crystallization roller is abraded and hot cracks are caused, the crystallization roller needs to be reground after a certain working time, and the crystallization roller after repeated regrinding is thinner and thinner, so that the crystallization roller is finally scrapped.
In order to reduce consumable materials, an alloy copper sleeve is fixed on a roller body of the conventional crystallization roller in a hot-sleeve mode, the scrapping of the alloy copper sleeve does not influence the recycling of the rest part of the crystallization roller, the alloy copper sleeve is heated to a certain temperature by the hot sleeve, an inner hole of the alloy copper sleeve becomes large due to expansion caused by heat and contraction caused by cold, then the crystallization roller penetrates into the inner hole of the alloy copper sleeve before being cooled, and the inner hole shrinks after being cooled so as to be fastened on the crystallization roller. The hot-jacket type crystallization roller has the defects that the difficulty of dismantling the alloy copper jacket is high, the roller body of the crystallization roller is easy to damage when the alloy copper jacket is removed, and the repeated utilization of the crystallization roller is influenced, so that the waste is caused.
Disclosure of Invention
The invention aims to provide a casting roll of a thin strip steel continuous casting device, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the casting roll comprises a pair of shaft heads and a roll body, wherein the shaft heads are symmetrically and fixedly connected to two ends of the roll body.
As a preferred technical scheme of the invention, the roller body is provided with a plurality of axial holes for circulating cooling water, and the axial holes are uniformly distributed around the axis of the roller body and are divided into a first hole and a second hole which are alternately arranged in sequence;
the shaft head on the left side of the shaft head is provided with four left channels coaxial with the roller body, one of the first hole and the second hole is communicated with two of the left channels through a first radial hole, the other one is communicated with the other two of the left channels through a second radial hole, and the second radial hole is closer to the middle part of the roller body than the first radial hole;
the shaft head on the right side of the shaft head is provided with four right channels coaxial with the roller body, one of the first hole and the second hole is communicated with two of the right channels through a third radial hole, the other one of the first hole and the second hole is communicated with the other two channels through a fourth radial hole, and the fourth radial hole is closer to the middle part of the roller body than the third radial hole.
As a preferred technical solution of the present invention, the first sealing rings disposed on both sides of the radial cross section where the first radial hole is located and located on the circumferential joint surface between the spindle nose on the left side of the spindle nose and the roll body should be sleeved, and the second sealing rings disposed on both sides of the radial cross section where the second radial hole is located and located on the circumferential joint surface between the spindle nose on the left side of the spindle nose and the roll body should be sleeved;
the two sides of the radial cross section where the third radial hole is located are provided with a shaft head located on the right side of the shaft head and a third sealing ring of the circumferential joint surface of the roller body, and the sealing rings are sleeved on the shaft head located on the right side of the shaft head and the fourth sealing ring of the circumferential joint surface of the roller body.
As a preferred technical scheme of the invention, a first water channeling monitoring hole is formed in the shaft head on the left side of the roller body, one end of the first water channeling monitoring hole is opened on the surface of the shaft head on the left side of the shaft head between the first sealing ring and the second sealing ring, and the other end of the first water channeling monitoring hole is opened on the non-combined surface of the shaft head on the left side of the roller body and the roller body;
the shaft head on the right side of the roller body is provided with a second water channeling monitoring hole, one end of the second water channeling monitoring hole is opened on the surface of the shaft head on the right side of the roller body between the third sealing ring and the fourth sealing ring, and the other end of the first water channeling monitoring hole is opened on the non-combined surface of the shaft head on the right side of the roller body and the roller body.
As a preferred technical solution of the present invention, the first water channeling monitoring hole and the second water channeling monitoring hole are both L-shaped.
As a preferred technical scheme of the present invention, the shaft heads are all fixedly connected with flange structure connecting portions, the connecting portions are fixedly connected with flange structures fixedly connected with the roller body, two ends of the roller body are respectively and fixedly connected with combining portions sleeved with the connecting portions, and the flange structures of the connecting portions are abutted against the end surfaces of the roller body and are fixedly connected by the first bolts.
In a preferred embodiment of the present invention, the thickness of the joint is 1.2 to 2 times the thickness of the other portion of the roll body except for the joint.
Compared with the prior art, the invention has the beneficial effects that:
in the crystallization roller of starter that this application provided, the roll body is tube structure, and, the roll body both ends are passed through the bolt and are connected with the spindle nose, the crystallization roller is including the left spindle nose of the spindle nose that the components of a whole that can function independently set up promptly, spindle nose and the roll body triplex on roll body right side, consequently can regard alloy copper sheathing as holistic roll body in practical application, alloy copper sheathing after coping reaches to scrap many times, can separate alloy copper sheathing and spindle nose through dismantling the bolt, this dismantlement process degree of difficulty is little and the spindle nose is difficult for receiving the damage, therefore the crystallization roller that this application provided is convenient for dismantle condemned alloy copper sheathing fast, and do not influence the reuse of all the other parts.
Drawings
FIG. 1 is a schematic view of a casting roll configuration of a thin strip continuous casting apparatus;
FIG. 2 is a schematic structural view of the head of the roll shown in FIG. 1 at the left side of the roll body;
FIG. 3 is a schematic view of the connection between the roll body and a pair of stub shafts of FIG. 1;
FIG. 4 is a schematic structural view of the head of the roll shown in FIG. 1 on the right side of the roll body;
FIG. 5 is a schematic view of a casting roll configuration of a thin strip continuous casting apparatus;
FIG. 6 is a schematic view of the connection between the roll body and a pair of stub shafts of FIG. 5;
FIG. 7 is an enlarged view of the structure at A in FIG. 6;
FIG. 8 is a schematic view of the spindle nose configuration;
fig. 9 is a schematic view of the structure of the spindle head.
In the figure: 1. a roll body; 2. a shaft head; 3. a right spindle nose; 4. a first plug; 6. a second plug; 7. a seal ring; 8. a bolt; 9. a water inlet hole; 901. a left water inlet hole; 902. a right water inlet hole; 10. an axial channel; 1001. a left water inlet channel; 1002. a right water inlet radial hole; 11. a radial bore; 1101. a left water inlet radial hole; 1102. a right water inlet radial hole; 1201. a first bore left end; 1202. the right end of the second hole; 1301. a first hole; 1302. a second hole; 1401. the right end of the first hole; 1402. a second aperture left end; 1501. a right second radial hole; 1502. a left second radial bore; 1601. a right channel; 1701. a right water return hole; 1702. a left backwater hole; 18. and water channeling monitoring holes.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the embodiments of the present application, the following description will be made clearly and completely in conjunction with the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present application will be described in detail with reference to fig. 1 to 9 in conjunction with the embodiments.
As shown in fig. 1 to 9, in this embodiment, a crystallizing roller for thin strip steel continuous casting equipment is provided, a roller body 1 and two shaft heads 2 are separately arranged, the roller body 1 is of a cylindrical structure, and the shaft heads 2 on the left side of the roller body 1 and the shaft heads 2 on the right side of the roller body 1 are both symmetrically and fixedly connected to two ends of the roller body 1 through bolts 8 (i.e., first bolts), that is, the shaft heads 2 on the left side and the shaft heads 2 on the right side are respectively. When the roller body 1 after being polished for many times is scrapped, the roller body 1 can be separated from the shaft head 2 by disassembling the bolt 8, the disassembling process is low in difficulty and the shaft head 2 is not easy to be damaged, so that the scrapped alloy copper sleeve can be quickly disassembled when the alloy copper sleeve is used as the integral roller body 1, and the reutilization of the rest parts is not influenced. The beneficial effects of the crystallization roller of the present application are understood only by taking the alloy copper sleeve as an example, and the material of the roller body 1 is not limited in the present application, that is, the roller body 1 may be a cylindrical body made of other materials besides the alloy copper sleeve as the roller body 1.
As shown in fig. 7, the spindle nose 2 is close to the connecting portion with the flange structure 3 of the one end fixedly connected with of the roll body 1, the connecting portion stretches into the joint portion of the roll body 1, the end surface of the roll body 1 is abutted against the flange structure 3 of the connecting portion, the roll body 1 and the flange structure 3 are fixedly connected through the bolt 8, the mounting hole of the bolt 8 is arranged along the axial direction of the roll body 1, so that the influence on the outer surface of the roll body 1 is avoided, namely, the effective area of the cold-rolled thin steel strip on the outer surface of the roll body 1 is not influenced. The two ends of the roller body 1 are respectively provided with a section of joint part which is sleeved with the connecting part of the shaft head 2, the thickness of the joint part, namely, the half of the difference value between the outer diameter and the inner diameter, can be designed to be larger than the thickness of other parts of the roller body 1 so as to better bear the casting and rolling force, and moreover, the joint part of the roller body 1 can be thickened so that the connecting part of the shaft head 2 is smaller in size, thereby facilitating the manufacture of the shaft head 2. In particular, the thickness of the joint of the roll body 1 may be 1.2-2 times, for example 1.5 times, the thickness of the rest of the roll body 1.
In order to cool the roll body 1 by cooling water, cooling water channels are arranged in the roll body 1 and the shaft head 2, the cooling water channels are arranged in the roll body 1 as much as possible in the embodiment, four cooling water channels are designed in the shaft head 2, then radial holes are respectively arranged in two radial cross sections which are staggered with each other, and the radial holes are used for communicating the cooling water channels of the roll body 1 and the shaft head 2, so that the cooling water channels on the roll body 1 are arranged more densely, namely two adjacent cooling water channels can be closer to each other, and thus the total water-passing cross section area of the roll body 1 can be increased.
The specific structure of the cooling water channel designed in this embodiment is described below, and the roll body 1, the left spindle nose 2 and the right spindle nose 2 are described separately, wherein the left spindle nose 2 and the right spindle nose 2 have similar structures due to the same structural principle. The roll body 1 is provided with a plurality of axial holes 13 for circulating cooling water, the axial holes 13 are uniformly distributed around the axis of the roll body 1 and are divided into a first hole 1301 and a second hole 1302 which are alternately arranged in sequence, namely, a circle of axial holes 13 are arranged on the cross section of the roll body 1, the total number of the axial holes 13 is even, the axial holes can be divided into two groups according to odd and even numbers, for example, the axial holes 13 with odd numbers are divided into a group called as a first hole, and the axial holes 13 with even numbers are divided into a group called as a second hole. In order to facilitate the manufacturing of the axial hole 13, the two ends of the axial hole 13 are closed by the first plugs 4 in this embodiment.
4 axial channels 10 are arranged in the shaft head 2 on the left side of the roller body 1, wherein two axial channels 10 are used as cooling water inlet holes, the rest two axial channels 10 are used as cooling water return holes, and the 4 axial channels 10 are collectively called as a left channel. The 4 axial passages 10 are uniformly distributed around the axis of the shaft head 2 and are divided into a left water inlet passage 1001 and a left water return passage 1002 which are alternately arranged in sequence.
Specifically, the shaft head 2 on the left side of the shaft head 2 is provided with a left water inlet channel 1001 and a left water return channel 1002 which are coaxial with the roller body 1, the left water inlet channel 1001 is communicated with a left water inlet radial hole (namely a first radial hole) 1101, the left water return channel 1002 is communicated with a left water return radial hole (namely a second radial hole) 1502, the left water return radial hole (namely the second radial hole) 1502 is closer to the middle of the roller body 1 than the left water inlet radial hole (namely the first radial hole) 1101, namely the radial section where the left water return radial hole (namely the second radial hole) 1502 is located is staggered with the radial section where the left water inlet radial hole (namely the first radial hole) 1101 is located, and the number of the left water inlet radial hole (namely the first radial hole) 1101 and the number of the left water return radial hole (namely the second radial hole) 1502 can be designed to be 2-5 different according to the size of cooling water flow. In order to ensure that water can be more smoothly passed between the left water inlet radial hole (namely, the first radial hole) 1101 and the left water return radial hole (namely, the second radial hole) 1502 and the first hole 1301 and the second hole 1302, a circle of groove is respectively designed on the outer surfaces of the intersection of the left water inlet radial hole (namely, the first radial hole) 1101 and the left water return radial hole (namely, the second radial hole) 1502 and the shaft head 2 positioned on the left side of the roller body 1, and a sealing ring 7 is arranged in each groove.
Similar to the shaft head 2 on the left side of the roller body 1, the shaft head 2 on the right side of the roller body 1 is provided with 4 axial channels 10 coaxial with the roller body 1, wherein two channels are used as cooling water inlet holes, two channels are used as cooling water return holes, and the 4 axial channels 10 are collectively called as a right channel. The 4 axial passages 10 are uniformly distributed around the axis of the shaft head 2 and are divided into a right water inlet passage 1002 and a right water return passage 1601 which are alternately arranged in sequence. The right water inlet channel 1002 is communicated with a right water inlet radial hole (i.e. a first radial hole) 1102, the right water return channel 1601 is communicated with a right water return radial hole (i.e. a second radial hole) 1501,
in this embodiment, no matter the spindle nose 2 on the left side of the roller body 1 or the spindle nose 2 on the right side of the roller body 1, there are two water inlet passages, and two return passages, namely, the spindle nose 2 on the left side of the roller body 1 and the spindle nose 2 on the right side of the roller body 1 are provided with a water inlet hole and a water outlet hole, as shown in fig. 8 and 9, the left spindle nose 2 on the left side of the spindle nose 2 is provided with a left return water hole 1002 and a left water inlet hole 1001. The left end of the channel is sealed by a first plug 4, the right end of the channel is communicated with a left water inlet radial hole (namely a first radial hole) 1101 and a left water return radial hole (namely a second radial hole) 1502, and in order to avoid water channeling as much as possible, a sealing ring 7 can be arranged on the joint surface of the shaft head 2 and the roller body 1. As shown in fig. 3 and 4, similar to the shaft head 2 on the left side of the shaft head 2, the shaft head 2 on the right side of the roller body 1 is provided with a right water return hole 1601 and a right water inlet hole 1002. The right end of the channel is sealed by a first plug 4, the left end of the channel is communicated with a right water inlet radial hole (namely a first radial hole) 1102 and a right water return radial hole (namely a second radial hole) 1501, and in order to transmit the rotary motion and the moment generated by the driving mechanism to the crystallization roller, the transmission connecting piece 5 can be arranged at the right end of the shaft head 2 on the right side of the roller body 1.
It should be noted that, in this embodiment, the cooling water in the water inlet channel of the axle head 2 on the left side of the roller body 1 enters the water return channel of the axle head 2 on the right side of the roller body 1 after flowing through the axial hole 13 (i.e., the first hole 1301) of the roller body 1, and the cooling water in the water inlet channel of the axle head 2 on the right side of the roller body 1 enters the water return channel of the axle head 2 on the left side of the axle head 2 after flowing through the axial hole 13 (i.e., the second hole 1302) of the roller body 1. As shown in fig. 1 to 4, the specific path of the cooling water from left to right is: the left water intake hole 901 → the left channel 1001 → the left first radial hole 1101 → the left end 1201 of the first hole → the first hole 1301 → the right end 1401 of the first hole → the right second radial hole 1501 → the right channel 1601 → the right return hole 1701. The specific path of the cooling water from right to left is as follows: the right inlet hole 902 → the right channel 1002 → the right first radial hole 1102 → the second hole right end 1202 → the second hole 1302 → the second hole left end 1402 → the left second radial hole 1502 → the left channel 1002 → the left return hole 1702.
Of course, in other embodiments, the shaft heads 2 on the left side of the roller body 1 and the shaft heads 2 on the right side of the roller body 1 can also use the outer channel as a water return channel, and the inner channel as a water inlet channel. Or, the inner passage and the outer passage of the same shaft head 2 can be used as passages for the same purpose (water inlet or water return), for example, the inner passage and the outer passage of the shaft head 2 on the left side of the shaft head 2 are both used as water inlet passages, and the inner passage and the outer passage of the shaft head 2 on the right side of the roll body 1 are both used as water return passages.
In order to monitor whether the cooling water is mixed with each other at the joint surface position due to the problem of the sealing ring 7, the embodiment makes the spindle head 2 at the left side of the spindle head 2 provided with the water mixing monitoring hole 18, one end of the water mixing monitoring hole 18 is opened on the surface of the spindle head 2 at the left side of the spindle head 2 between the first sealing ring and the second sealing ring, and the other end is opened on the non-joint surface of the spindle head 2 at the left side of the spindle head 2 and the roll body 1. The water channeling monitoring hole 18 may be formed in an L shape, an opening of the non-combined surface of the spindle head 2 positioned on the left side of the roll body 1 and the roll body 1 may be closed by the second plug 6, and the second plug 6 may be removed when it is checked whether water is present in the water channeling monitoring hole 18. Similarly, the shaft head 2 on the right side of the roll body 1 can also be provided with a water channeling monitoring hole, one end of the water channeling monitoring hole is opened on the surface of the shaft head 2 on the right side of the roll body 1 between the third sealing ring and the fourth sealing ring, and the other end of the water channeling monitoring hole is opened on the non-combined surface of the shaft head 2 on the right side of the roll body 1 and the roll body 1.
The first water channeling monitoring hole and the second water channeling monitoring hole are both L-shaped.
The present application also provides a thin strip continuous casting apparatus including the crystallization rolls disclosed in the above embodiments. Since the crystallization rolls disclosed in the above embodiments have the above technical effects, the thin strip continuous casting apparatus having the crystallization rolls also has the above technical effects, and the details are not repeated herein.
Therefore, the present invention is not limited to the above embodiments, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept within the technical scope of the present invention.
Claims (7)
1. The casting roll is characterized by comprising a pair of shaft heads and a roll body, wherein the shaft heads are symmetrically and fixedly connected to two ends of the roll body.
2. The casting roll of thin strip continuous casting apparatus as claimed in claim 1 wherein the roll body defines a plurality of axial bores for the passage of cooling water, the axial bores being evenly distributed about the axis of the roll body and being divided into first and second bores arranged alternately in sequence;
the shaft head on the left side of the shaft head is provided with four left channels coaxial with the roller body, one of the first hole and the second hole is communicated with two of the left channels through a first radial hole, the other one is communicated with the other two of the left channels through a second radial hole, and the second radial hole is closer to the middle part of the roller body than the first radial hole;
the shaft head on the right side of the shaft head is provided with four right channels coaxial with the roller body, one of the first hole and the second hole is communicated with two of the right channels through a third radial hole, the other one is communicated with the other two channels of the right channel through a fourth radial hole, and the fourth radial hole is closer to the middle part of the roller body than the third radial hole.
3. The casting roll of the thin strip steel continuous casting equipment according to claim 2, characterized in that the first sealing rings arranged on the circumferential joint surface of the shaft head on the left side of the shaft head and the roll body on the two sides of the radial section where the first radial hole is located are sleeved, and the second sealing rings arranged on the circumferential joint surface of the shaft head on the left side of the shaft head and the roll body on the two sides of the radial section where the second radial hole is located are sleeved;
the two sides of the radial cross section where the third radial hole is located are provided with the shaft heads located on the right side of the shaft heads and the third sealing rings of the circumferential combination surface of the roller body, and the two sides of the radial cross section where the fourth radial hole is located are provided with the shaft heads located on the right side of the shaft heads and the fourth sealing rings of the circumferential combination surface of the roller body.
4. The casting roll of the thin strip steel continuous casting equipment according to claim 3, characterized in that a first water channeling monitoring hole is formed in a shaft head on the left side of the roll body, one end of the first water channeling monitoring hole is opened on the surface of the shaft head on the left side of the shaft head between the first sealing ring and the second sealing ring, and the other end of the first water channeling monitoring hole is opened on the non-combined surface of the shaft head on the left side of the roll body and the roll body;
the roller comprises a roller body and is characterized in that a second water channeling monitoring hole is formed in the shaft head on the right side of the roller body, one end of the second water channeling monitoring hole is opened on the surface of the shaft head on the right side of the roller body between a third sealing ring and a fourth sealing ring, and the other end of the first water channeling monitoring hole is opened on the non-combined surface of the shaft head 2 on the right side of the roller body 1 and the roller body.
5. The casting roll of thin strip steel continuous casting apparatus according to claim 4, wherein the first water channeling monitoring hole and the second water channeling monitoring hole are L-shaped.
6. The casting roll of thin strip steel continuous casting equipment according to claim 1, characterized in that a pair of said axle heads are fixedly connected with flange structure connecting parts, said connecting parts are fixedly connected with flange structures fixedly connected with the roll body, two ends of said roll body are respectively fixedly connected with a combining part sleeved with the connecting parts, and the flange structures 3 of said connecting parts are abutted against the end surface of said roll body and fixedly connected by said first bolts.
7. The casting roll of the thin strip continuous casting apparatus of claim 6, wherein the thickness of the joint is 1.2 to 2 times the thickness of the other portions of the roll body than the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077993.3A CN115647308A (en) | 2022-09-05 | 2022-09-05 | Casting roll of thin strip steel continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211077993.3A CN115647308A (en) | 2022-09-05 | 2022-09-05 | Casting roll of thin strip steel continuous casting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115647308A true CN115647308A (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211077993.3A Pending CN115647308A (en) | 2022-09-05 | 2022-09-05 | Casting roll of thin strip steel continuous casting equipment |
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| Country | Link |
|---|---|
| CN (1) | CN115647308A (en) |
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2022
- 2022-09-05 CN CN202211077993.3A patent/CN115647308A/en active Pending
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