CN111299530A - Dummy bar head and continuous casting machine for hollow round billet - Google Patents
Dummy bar head and continuous casting machine for hollow round billet Download PDFInfo
- Publication number
- CN111299530A CN111299530A CN202010310241.1A CN202010310241A CN111299530A CN 111299530 A CN111299530 A CN 111299530A CN 202010310241 A CN202010310241 A CN 202010310241A CN 111299530 A CN111299530 A CN 111299530A
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- Prior art keywords
- dummy bar
- bar head
- hollow round
- rib plate
- groove
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 abstract description 32
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000008901 benefit Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/08—Accessories for starting the casting procedure
- B22D11/081—Starter bars
- B22D11/083—Starter bar head; Means for connecting or detaching starter bars and ingots
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention provides a dummy bar head and a continuous casting machine for a hollow round billet, wherein the dummy bar head for the hollow round billet comprises: the dummy bar head body is of a hollow cylindrical structure with openings at two ends; one side of the connecting piece is fixedly connected with one end of the dummy bar head body, and the other side of the connecting piece is provided with an upper rib plate used for being connected with the hollow round billet. The casting blank casting device has the advantages that the upper rib plate is arranged on the other side of the connecting piece, molten steel enters the crystallizer after casting, can be solidified with the upper rib plate to form a casting blank head, and a casting blank with a blank shell formed is led out of the crystallizer through the casting blank head, so that the purpose of ingot guiding for the hollow round blank is achieved.
Description
Technical Field
The invention relates to the technical field of continuous casting in steel production, in particular to a dummy bar head for a hollow round billet and a continuous casting machine.
Background
With the development of the iron and steel industry, iron and steel enterprises pay more and more attention to energy conservation and consumption reduction, and the near-net-shape continuous casting technology can save energy and reduce the investment and production cost of the subsequent process, wherein the hollow round billet continuous casting technology is one of the technologies. At present, seamless steel tube manufacturers mainly adopt a method of solid round billet → perforation → oblique rolling pierced billet → continuous rolling tube → reduction and sizing to produce seamless steel tubes, if the blanks are made into hollow round billets, the perforation procedure can be omitted, the investment of tube-penetrating equipment and the production cost are reduced, and the method has great economic benefits for iron and steel enterprises. Because the shape of the hollow round billet is different from that of the conventional continuous casting, the center of the casting billet is hollow, and no special dummy bar head exists at present.
Disclosure of Invention
The invention provides a dummy bar head for a hollow round billet and a continuous casting machine, which aim to realize the purpose of matching the dummy bar with the hollow round billet.
The technical scheme adopted by the invention for solving the technical problems is as follows: a dummy bar head for a hollow round billet, comprising: the dummy bar head body is of a hollow cylindrical structure with openings at two ends; one side of the connecting piece is fixedly connected with one end of the dummy bar head body, and the other side of the connecting piece is provided with an upper rib plate used for being connected with the hollow round billet.
Further, a mounting groove is formed in the connecting end face of the dummy bar head body and the connecting piece; the connecting piece further comprises an annular plate and a lower rib plate, the upper rib plate is arranged on one side of the annular plate, the lower rib plate is arranged on the other side of the annular plate, and the lower rib plate is correspondingly matched with the mounting groove.
Furthermore, the installation grooves are uniformly distributed along the circumferential direction of the connecting end face at intervals, each installation groove is a cross-shaped groove, the shape of the lower rib plate is matched with that of the installation groove, and the number of the lower rib plates is the same as that of the installation grooves.
Further, the mounting groove comprises a first groove and a second groove which are vertically arranged, the length range of the first groove is 100-300 mm, and the depth range of the first groove is 100-180 mm; the length range of the second groove is 60-150 mm, and the depth range of the second groove is 20-40 mm.
Further, the periphery of the dummy bar head body is provided with a mounting hole for fixing the lower rib plate, and the mounting hole is communicated with the mounting groove.
Furthermore, the periphery of the other end of the dummy bar head body is provided with a pin shaft connecting through hole extending in the radial direction.
Furthermore, a plurality of upper rib plates are uniformly distributed at intervals along the circumferential direction of the annular plate.
Furthermore, the upper rib plate comprises a main rib plate and two rib plates, the main rib plate is perpendicular to the annular plate, and the two rib plates are symmetrically arranged on two sides of the main rib plate and are both connected with the main rib plate.
Furthermore, the main rib plate and the two rib plates are provided with at least one pouring through hole.
The invention also provides a continuous casting machine which comprises the dummy bar head and the transition section, wherein the dummy bar head and the transition section are connected.
The casting blank casting device has the advantages that the upper rib plate is arranged on the other side of the connecting piece, molten steel enters the crystallizer after casting, can be solidified with the upper rib plate to form a casting blank head, and a casting blank with a blank shell formed is led out of the crystallizer through the casting blank head, so that the purpose of ingot guiding for the hollow round blank is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of an assembly structure of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a connector according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a dummy head body according to an embodiment of the present invention.
Reference numbers in the figures: 10. a dummy bar head body; 11. installing a groove; 12. mounting holes; 13. the pin shaft is connected with the through hole; 20. a connecting member; 21. a rib plate is arranged; 211. a main rib plate; 212. a rib plate; 22. an annular plate; 23. and (4) a lower rib plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, an embodiment of the present invention provides a dummy bar head for a hollow round billet, including a dummy bar head body 10 and a connecting member 20. The dummy bar head body 10 is a hollow cylindrical structure with openings at both ends. One side of the connecting piece 20 is fixedly connected with one end of the dummy bar head body 10, and the other side of the connecting piece 20 is provided with an upper rib plate 21 used for being connected with the hollow round billet.
An upper rib plate 21 is arranged on the other side of the connecting piece 20, molten steel enters the crystallizer after casting and can be solidified with the upper rib plate 21 to form a casting blank head, and a casting blank with a blank shell is led out of the crystallizer through the casting blank head, so that the purpose of ingot guiding for the hollow round blank is achieved.
As shown in fig. 2 and 3, a mounting groove 11 is provided at a connection end surface of the dummy bar head body 10 and the connection piece 20; the connecting piece 20 further comprises an annular plate 22 and a lower rib plate 23, wherein the upper rib plate 21 is arranged on one side of the annular plate 22, the lower rib plate 23 is arranged on the other side of the annular plate 22, and the lower rib plate 23 is correspondingly matched with the mounting groove 11.
The installation groove 11 is arranged to fix the lower rib plate 23 into the installation groove 11, so that the connecting piece 20 and the dummy bar head body 10 can be fixed conveniently. Meanwhile, the annular plate 22 is of a circular ring structure, the inner diameter and the outer diameter of the annular plate correspond to those of the dummy bar head body 10 one by one, and the annular plate 22 is arranged to be matched with the dummy bar head body 10, so that dummy bar operation can be conveniently carried out on the hollow round blank.
Preferably, the number of the mounting grooves 11 is multiple, the mounting grooves 11 are uniformly distributed at intervals along the circumferential direction of the connecting end surface, each mounting groove 11 is a cross-shaped groove, the shape of the lower rib plate 23 is matched with that of the mounting groove 11, and the number of the lower rib plates 23 is the same as that of the mounting grooves 11.
Set up the cross recess and set up lower gusset 23 into the cross correspondingly, the purpose is convenient for with cross recess centering when lower gusset 23 installs, can save the centering operation after installing connecting piece 20 to dummy bar head body 10, reduces staff's intensity of labour.
In the embodiment of the invention, the mounting groove 11 comprises a first groove and a second groove which are vertically arranged, the length range of the first groove is 100-300 mm, and the depth range of the first groove is 100-180 mm; the length range of the second groove is 60-150 mm, and the depth range of the second groove is 20-40 mm.
The lengths and depths of the first groove and the second groove are set to be different numerical value ranges, so that the lower rib plate 23 has directionality when being used for plugging the mounting groove 11, and the centering of the connecting piece 20 is facilitated. In the embodiment of the present invention, the mounting grooves 11 are four to eight groups, and more or fewer groups of mounting grooves 11 may be provided according to different requirements.
Further, the outer periphery of the dummy bar head body 10 is provided with a mounting hole 12 for fixing the lower rib plate 23, and the mounting hole 12 is communicated with the mounting groove 11. The mounting holes 12 are radial through holes, two mounting holes 12 are symmetrically arranged at the lower end of each mounting groove 11, pin holes are arranged at the lower ends of the lower rib plates 23, and when the lower rib plates 23 are inserted into the mounting grooves 11, pins can be inserted into the lower rib plates 23 through the mounting holes 12, so that the lower rib plates 23 are fixedly connected with the mounting grooves.
As shown in fig. 3, the other end of the dummy head body 10 is provided at its outer circumference with a pin connecting through hole 13 extending in a radial direction. The pin shaft connecting through hole 13 can be connected with the transition section through a pin shaft, the periphery of the pin shaft connecting through hole 13 is chamfered by 6-12 mm, and the dummy bar head body 10 can be used repeatedly.
It should be noted that the outer diameter of the section of the dummy bar head body 10 is 400-1000 mm, the inner diameter is 200-500 mm, the inner diameter of the dummy bar head body 10 is 6-14 mm larger than the diameter of the lower opening of the inner crystallizer, and the outer diameter of the dummy bar head body 10 is 7-15 mm smaller than the diameter of the lower opening of the outer crystallizer.
As shown in fig. 2, the upper rib plates 21 are provided in plurality and are spaced apart from each other in the circumferential direction of the annular plate 22. The upper rib plates 21 arranged at intervals are arranged to be poured together with one end of the hollow round billet through the upper rib plates 21, so that the traction strength is increased during dummy ingot casting, and the separation of the upper rib plates and the hollow round billet during dummy ingot casting is avoided.
The connecting member 20 is installed on the dummy bar head body 10 before preparation for casting, and plays a role in condensing molten steel and connecting the dummy bar head body 10, and the connecting member 20 is a disposable article.
The upper rib plate 21 comprises a main rib plate 211 and two rib plates 212, the main rib plate 211 is perpendicular to the annular plate 22, and the two rib plates 212 are symmetrically arranged on two sides of the main rib plate 211 and are connected with the main rib plate 211. The main rib plate 211 and the two rib plates 212 are arranged, so that the strength of the main rib plate 211 is increased through the two rib plates 212, and the dummy ingot operation is safer.
In the embodiment of the invention, the main rib plate 211 and the two rib plates 212 are provided with at least one pouring through hole. The through holes are poured, so that molten steel can be fully contacted and condensed with the upper rib plate 21, and the blank drawing operation can be completed satisfactorily. The diameter of the pouring through holes is 10-25 mm, and the hole interval is 30-60 mm.
In the embodiment of the invention, the thickness of the annular plate 22 is 10-18 mm, 6-10 groups of upper rib plates 21 are arranged and uniformly distributed at intervals along the annular plate 22. Of course, the number of the upper rib plates 21 can be changed according to different requirements.
The dummy bar head body 10 and the connecting piece 20 are both steel structures, so that the strength of the whole part can be increased, and the damage to the dummy bar head body 10 and the connecting piece 20 can be avoided.
The embodiment of the invention also provides a continuous casting machine, which comprises a dummy bar head and a transition section, wherein the dummy bar head is used for the hollow round billet, and the dummy bar head is connected with the transition section.
During the concrete operation, a dummy bar head for the hollow round billet is connected to a dummy bar through a transition section, the connecting piece 20 is installed on the dummy bar head body 10 in advance, when the casting is prepared, the dummy bar head body 10 is sent into the crystallizer, and a gap between the connecting piece 20 and the crystallizer is sealed by asbestos ropes and the like; because the upper rib plate 21 is arranged on the connecting piece 20, molten steel enters the crystallizer after casting and the connecting piece 20 is solidified into a casting blank head, and the casting blank with the formed blank shell is led out of the crystallizer through the casting blank head; after passing through the withdrawal and straightening unit, the head of the casting blank is cut off by a flame cutting machine, the head of the casting blank enters the dummy bar storage device along with the dummy bar head body 10, the pin shaft for connecting the connecting piece 20 and the dummy bar head body 10 is taken out at the dummy bar storage position, the head of the casting blank and the connecting piece 20 can be lifted and transported away, the connecting piece 20 is disposable, and the dummy bar head body 10 can be recycled for multiple times.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the invention has simple design, reliable structure, convenient disassembly and maintenance and easy replacement.
An upper rib plate 21 is arranged on the other side of the connecting piece 20, molten steel enters the crystallizer after casting and can be solidified with the upper rib plate 21 to form a casting blank head, and a casting blank with a blank shell is led out of the crystallizer through the casting blank head, so that the purpose of ingot guiding for the hollow round blank is achieved.
The above description is only exemplary of the invention and should not be taken as limiting the scope of the invention, so that the invention is intended to cover all modifications and equivalents of the embodiments described herein. In addition, the technical features, the technical schemes and the technical schemes can be freely combined and used.
Claims (10)
1. A dummy bar head for a hollow round billet, comprising:
the dummy bar head body (10) is of a hollow cylindrical structure with two open ends;
one side of the connecting piece (20) is fixedly connected with one end of the dummy bar head body (10), and the other side of the connecting piece (20) is provided with an upper rib plate (21) used for being connected with the hollow round billet.
2. The dummy bar head for hollow round billets as claimed in claim 1, wherein,
a mounting groove (11) is formed in the connecting end face of the dummy bar head body (10) and the connecting piece (20);
the connecting piece (20) further comprises an annular plate (22) and a lower rib plate (23), the upper rib plate (21) is installed on one side of the annular plate (22), the lower rib plate (23) is installed on the other side of the annular plate (22), and the lower rib plate (23) is correspondingly matched with the installation groove (11).
3. The dummy bar head for the hollow round billet according to claim 2, wherein a plurality of mounting grooves (11) are provided, the mounting grooves (11) are uniformly distributed at intervals along the circumferential direction of the connecting end surface, each mounting groove (11) is a cross-shaped groove, the shape of the lower rib plate (23) is matched with that of the mounting groove (11), and the number of the lower rib plates (23) is the same as that of the mounting grooves (11).
4. The dummy bar head for a hollow round billet according to claim 3, wherein said mounting groove (11) comprises a first groove and a second groove arranged perpendicularly to each other, said first groove having a length in the range of 100 to 300mm and a depth in the range of 100 to 180 mm; the length range of the second groove is 60-150 mm, and the depth range of the second groove is 20-40 mm.
5. The dummy bar head for the hollow round billet according to claim 2, wherein the outer periphery of the dummy bar head body (10) is provided with a mounting hole (12) for fixing the lower rib plate (23), and the mounting hole (12) is communicated with the mounting groove (11).
6. The dummy bar head for a hollow round billet according to claim 2, wherein the other end periphery of the dummy bar head body (10) is provided with a pin connecting through hole (13) extending radially.
7. The dummy bar head for the hollow round billet according to claim 2, wherein the upper rib plate (21) is provided in plurality and uniformly distributed at intervals along the circumferential direction of the annular plate (22).
8. The dummy bar head for the hollow round billet according to claim 7, wherein the upper rib plate (21) comprises a main rib plate (211) and two rib plates (212), the main rib plate (211) is perpendicular to the annular plate (22), and the two rib plates (212) are symmetrically arranged on two sides of the main rib plate (211) and are connected with the main rib plate (211).
9. The dummy bar head for the hollow round billet according to claim 8, wherein the main rib plate (211) and the two rib plates (212) are provided with at least one pouring through hole.
10. A continuous casting machine comprising a dummy bar head for a hollow round bar and a transition section, characterized in that the dummy bar head for a hollow round bar is the dummy bar head for a hollow round bar of any one of claims 1 to 9, and the dummy bar head for a hollow round bar is connected to the transition section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310241.1A CN111299530A (en) | 2020-04-20 | 2020-04-20 | Dummy bar head and continuous casting machine for hollow round billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010310241.1A CN111299530A (en) | 2020-04-20 | 2020-04-20 | Dummy bar head and continuous casting machine for hollow round billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111299530A true CN111299530A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010310241.1A Pending CN111299530A (en) | 2020-04-20 | 2020-04-20 | Dummy bar head and continuous casting machine for hollow round billet |
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| Country | Link |
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| CN (1) | CN111299530A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220362838A1 (en) * | 2021-05-11 | 2022-11-17 | Wagstaff, Inc. | Starting head for a continuous casting mold and associated method |
| WO2023099141A1 (en) * | 2021-12-03 | 2023-06-08 | Sms Group Gmbh | Sealing system for a continuous casting plant |
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| CN2334519Y (en) * | 1998-08-25 | 1999-08-25 | 首钢总公司 | Automatic pouring device for definited diameter pouring gate in continuous casting |
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| CN205869417U (en) * | 2016-07-31 | 2017-01-11 | 马鞍山尚元冶金科技有限公司 | Dummy bar and continuous casting billet autosegregation's continuous casting device |
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2020
- 2020-04-20 CN CN202010310241.1A patent/CN111299530A/en active Pending
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| JPH06277809A (en) * | 1993-03-30 | 1994-10-04 | Nippon Steel Corp | Dummy bar for continuous casting and method for executing rolling reduction to cast slab in continuous caster |
| CN2334519Y (en) * | 1998-08-25 | 1999-08-25 | 首钢总公司 | Automatic pouring device for definited diameter pouring gate in continuous casting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220362838A1 (en) * | 2021-05-11 | 2022-11-17 | Wagstaff, Inc. | Starting head for a continuous casting mold and associated method |
| WO2023099141A1 (en) * | 2021-12-03 | 2023-06-08 | Sms Group Gmbh | Sealing system for a continuous casting plant |
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