CN100571930C - A kind of tundish ventilating filling pipe end - Google Patents
A kind of tundish ventilating filling pipe end Download PDFInfo
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- CN100571930C CN100571930C CNB2008101469891A CN200810146989A CN100571930C CN 100571930 C CN100571930 C CN 100571930C CN B2008101469891 A CNB2008101469891 A CN B2008101469891A CN 200810146989 A CN200810146989 A CN 200810146989A CN 100571930 C CN100571930 C CN 100571930C
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- pipe end
- filling pipe
- tubular portion
- base part
- ventilating filling
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Abstract
A kind of tundish ventilating filling pipe end comprises tubular portion (3) and base part (5); The inwall of described tubular portion (3) forms the passage (11) that is used to pour into a mould; Described base part (5) is around the bottom of described tubular portion (3) and close described tubular portion (3); Described tubular portion (3) has common bottom surface with described base part (5); It is characterized in that: described base part (5) is made up of cylindrical part that is provided with near described bottom surface and the round platform part (4) that is arranged on described cylindrical part top; The bus of described round platform part (4) is a camber line, and the side that this bus forms constitutes clamping face (41).Described filling pipe end interior temperature distribution provided by the invention is even, can effectively avoid base stress to concentrate and the cracking phenomena of generation, makes the ventilating filling pipe end long service life, and the maintenance cost in the use is cheap.
Description
Technical field
The present invention relates to the filling pipe end that a kind of tundish metallurgy is used, specifically is a kind of tundish ventilating filling pipe end.
Background technology
In the continuous casting process, the tundish ventilating filling pipe end is positioned at the bottom of tundish, be connected with submersed nozzle below, in use, to the argon gas of the logical certain pressure of filling pipe end, the microbubble of argon gas is attaching impurity such as the alundum (Al come-up in the molten steel, prevents the nonmetal inclusion deposition, thereby guarantee that continuous casting carries out smoothly, improve steel quality.Filling pipe end of the prior art, upper surface of substrate becomes the obtuse angle with the side of substrate, as the clamping device that discloses a kind of single-piece inner nozzle and be used to support this inner nozzle among the Chinese patent literature CN1247351C, the mouth of a river in this invention comprises a polygon substrate, and the side of the upper base of polygon substrate and polygon substrate constitutes the obtuse angle.When using this mouth of a river, clamping device will contact with the upper base of substrate, because the upper base of substrate is a plane, must be formed with wedge angle with its abutted surface, will inevitably make substrate produce bigger local stress, what is more important, because this anti-material products of tundish ventilating filling pipe end uses under the condition of high temperature, therefore the uniformity coefficient of filling pipe end interior temperature distribution is determining the size of inherent strain to itself destructiveness, whether interior temperature distribution evenly then has direct relation with its shape and structure, the substrate of filling pipe end is the straightedge column type in the prior art, each edge of right prism substrate can make stress more concentrated, make the substrate part fragile, influence the service life of whole filling pipe end; In addition, existing filling pipe end substrate only one group of two relative side is provided with the inclined-plane that constitutes above-mentioned obtuse angle, in case this group inclined-plane is damaged, has to change whole filling pipe end, has so just caused very big waste, has increased maintenance cost.
Summary of the invention
For this reason, technical problem to be solved by this invention be to provide a kind of interior temperature distribution evenly, can avoid effectively that base stress is concentrated, long service life, and can save the tundish ventilating filling pipe end of maintenance cost.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of tundish ventilating filling pipe end comprises tubular portion (3) and base part (5); The inwall of described tubular portion (3) forms the passage (11) that is used to pour into a mould; Described base part (5) is around the bottom of described tubular portion (3) and close described tubular portion (3); Described tubular portion (3) has common bottom surface with described base part (5); Described base part (5) is made up of cylindrical part that is provided with near described bottom surface and the round platform part (4) that is arranged on described cylindrical part top; The bus of described round platform part (4) is a camber line, and the side that this bus forms constitutes clamping face (41).
Above-mentioned tundish ventilating filling pipe end, described filling pipe end bottom is provided with sealing surface body (10); Described sealing surface body (10) is gone up and is provided with ring-type air drain (6) around described passage (11), and described ring-type air drain (6) cooperates formation sealing cushion air drain with the submersed nozzle sealing surface; The lower surface of described sealing surface body (10) is the sliding sealing surface that cooperates with described submersed nozzle sealing surface.
Above-mentioned tundish ventilating filling pipe end, described bus are recessed camber line.
Above-mentioned tundish ventilating filling pipe end, described bus are recessed circular arc line.
Above-mentioned tundish ventilating filling pipe end, the arc radius scope of described circular arc line is 20mm to 120mm.
Above-mentioned tundish ventilating filling pipe end, described tubular portion (3) has a main part (31); Described main part (31) and described base part (5) are made into the parts of an integral body.
Above-mentioned tundish ventilating filling pipe end, described tubular portion (3) also comprise and are arranged on the control stream unit (1) of described main part (31) away from described base part (5) one ends; And one deck means for ventilation (2) that is arranged on the inboard of described main part (31), form ventilative circumferential weld (9) between described means for ventilation (2) and the described main part (31); Form two passages on the described clamping face (41), one first passage (81) is communicated with described ventilative circumferential weld (9), and another second passage (82) is communicated with described ring-type air drain (6), forms two not connected aerating systems.
Above-mentioned tundish ventilating filling pipe end, described round platform part (4) is provided with sealing ring (12) in the position of described first passage (81) and described second passage (82).
Above-mentioned tundish ventilating filling pipe end, the cylindrical of the upper limb of described clamping face (41) and described tubular portion (3) is tangent.
Above-mentioned tundish ventilating filling pipe end, the outer surface of described base part (5) is coated with box hat.
Technique scheme of the present invention has the following advantages compared to existing technology: tundish ventilating filling pipe end 1. of the present invention, its base part comprises the cylindrical part and the round platform part that is arranged on cylindrical part top near the bottom surface, because cylindrical part and round platform part have cylindrical shape respectively, the circular cone profile, be that whole ventilating filling pipe end is reference axis with the central axis, symmetrical fully in 360 degree, thereby help the filling pipe end internal temperature to greatest extent and be tending towards the homogenising distribution, greatly reduce the destruction of inherent strain, guaranteed the service life of ventilating filling pipe end filling pipe end; The whole base part of tundish ventilating filling pipe end 2. of the present invention is without any the corner, thereby further avoided in the prior art in the right prism substrate stress of each edge to concentrate, can effectively reduce the stress in the whole filling pipe end, improve its whole service life, also just reduced the maintenance cost of equipment; 3. tundish ventilating filling pipe end of the present invention coats one deck box hat at the outer surface of base part, thereby has further increased its intensity, makes the service life of filling pipe end more secure; The upper limb of the clamping face of tundish ventilating filling pipe end 4. of the present invention and the cylindrical of described tubular portion are tangent, have avoided this part to produce stress and have concentrated, and further guarantee filling pipe end service life; 5. tundish ventilating filling pipe end of the present invention, the bottom surface of base part is provided with the sealing surface body, is used to prevent that air guarantees steel quality from the contact position infiltration of filling pipe end and components downstream in the course of the work; 6. tundish ventilating filling pipe end of the present invention is provided with sealing ring around the passage, guaranteeing that passage can not infiltrate air when feeding gases at high pressure, thereby further guarantees steel quality.
Description of drawings
For the easier quilt of content of the present invention is clearly understood, below according to a particular embodiment of the invention and in conjunction with the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is the front view of the preferred embodiment of the present invention;
Fig. 2 is the vertical view of the preferred embodiment of the present invention;
Fig. 3 is the enlarged diagram of C part among Fig. 1;
Fig. 4 is the enlarged diagram of D part among Fig. 6;
Fig. 5 be among Fig. 2 A-A to partial sectional view;
Fig. 6 be among Fig. 2 B-B to partial sectional view;
Fig. 7 is the schematic perspective view of the preferred embodiment of the present invention;
Fig. 8 is the schematic perspective view of another embodiment of the present invention.
Reference numeral is expressed as among the figure: 1-is controlled stream unit, 2-means for ventilation, 3-tubular portion, the 31-main part, 4-round platform part, 41-clamping face, the 5-base part, 6-ring-type air drain, 7-box hat, 81-first passage, 82-second passage, the 9-circumferential weld of breathing freely, 10-sealing surface body, the 11-passage, the 12-sealing ring
The specific embodiment
As depicted in figs. 1 and 2, be a preferred embodiment of tundish ventilating filling pipe end of the present invention, its stereogram is as shown in Figure 7.Described tundish ventilating filling pipe end comprises tubular portion 3 and base part 5.The inwall of described tubular portion 3 forms the passage 11 that is used to pour into a mould; Described base part 5 is provided with around the bottom of described tubular portion 3 and close described tubular portion 3; Described tubular portion 3 has common bottom surface with described base part 5.Described base part 5 is made up of cylindrical part that is provided with near described bottom surface and the round platform part 4 that is arranged on described cylindrical part top.Because cylindrical part and round platform part have cylindrical shape, circular cone profile respectively, whole described filling pipe end is reference axis with the central axis, symmetrical fully in 360 degree, thereby help the filling pipe end internal temperature to greatest extent and be tending towards the homogenising distribution, greatly reduce the destruction of inherent strain, guaranteed the service life of ventilating filling pipe end filling pipe end.And described cylindrical part and described round platform part 4 make whole described base part 5 without any the corner, thereby avoided the stress of each edge of right prism substrate in the prior art to concentrate, can effectively reduce the stress in the whole filling pipe end, avoid producing cracking phenomena, improve its whole service life, thereby reduced the maintenance cost of equipment.The bus of described round platform part 4 is a camber line, and in the present embodiment, described bus is recessed circular arc line, and its arc radius is 68mm (millimeter), and its radius is 20mm to 120mm, and optimum arc radius scope is 50mm to 80mm.The side that this bus forms constitutes clamping face 41, and promptly described clamping face 41 is following spill arc surface.
Described tubular portion 3 has a main part 31, and described main part 31 and described base part 5 are made into the parts of an integral body.Away from described base part 5 one ends a control stream unit 1 is set in described main part 31, described control stream unit 1 has a bowl-type mouth, is used for controlling current at casting process; Be provided with one deck means for ventilation 2 in the inboard of described main part 31, described means for ventilation 2 adopts the density materials with smaller to make, and can increase the Air permenbility in the described filling pipe end; Form ventilative circumferential weld 9 between described means for ventilation 2 and the described main part 31, the inert argon body of the described ventilative circumferential weld 9 of process can permeate more equably by described means for ventilation 2, guarantees that continuous casting carries out smoothly.The bottom, described bottom surface of described filling pipe end also is provided with sealing surface body (10), the lower surface of described sealing surface body (10) is the sliding sealing surface that cooperates with the submersed nozzle sealing surface, two sealing surfaces can closely slide under resilient force, prevent air intrusion molten steel, thereby guarantee steel quality.Be provided with ring-type air drain 6 around described passage 11 on the described sealing surface body 10, be connected with the argon gas that is in barotropic state in the described ring-type air drain 6, be mainly used in and prevent in the course of the work, the underbalance effect that the MOLTEN STEEL FLOW effect produces, further avoid air to invade molten steel, to guarantee steel quality from described sliding sealing surface.As shown in Figure 3, described ring-type air drain 6 cooperates formation sealing cushion air drain with described submersed nozzle sealing surface.In the present embodiment, described ring-type air drain 6 is a ring-type argon gas groove, and described ventilative circumferential weld 9 is the ventilative circumferential weld of argon gas.
Again as shown in Figure 2, two passages of moulding on the described clamping face 41 in the foregoing description, one first passage 81 is communicated with described ventilative circumferential weld 9, its local amplification view as shown in Figure 5, another second passage 82 is communicated with described ring-type air drain 6, its local amplification view as shown in Figure 6, thereby formed two not connected aerating systems.In the present embodiment, two described passages are the argon gas passage.In addition, the position, aperture that centers on described first passage 81 and described second passage 82 also is provided with sealing ring 12, as shown in Figure 4.Described sealing ring 12 guarantees that described first passage 81 and described second passage 82 can not infiltrate air when feeding gases at high pressure, thereby further guarantees steel quality.
In the above-described embodiments, for further reducing the concentrated problem of stress that described in the course of the work base part 5 produces, described round platform part 4 is shaped as with the combining of bound fraction of described tubular portion 3: the cylindrical of the upper limb of described clamping face 41 and described tubular portion 3 is tangent.
In other embodiments, the arc radius of described circular arc line can also be 20mm, 50mm, 80mm, 106mm or 120mm, and its arc radius scope is 20mm to 120mm, and optimum arc radius scope is 50mm to 80mm.In this scope, the local stress that described round platform part 4 is subjected to is less relatively, helps the equipment protection of described tundish ventilating filling pipe end.If described arc radius is excessive, described clamping face 41 will approach table top, be unfavorable for the clamping of described tundish ventilating filling pipe end.If the radius of described arc surface is too small, can cause described tubular portion 3 too concentrated with the stress in described round platform part 4 internal structures, described tundish ventilating filling pipe end will very easily be damaged, can not guarantee the service life that is described filling pipe end integral body, goal of the invention of the present invention can not be realized, more good effect of the present invention can not be embodied.
In other embodiments, the outer surface of described base part 5 can be coated with box hat 7 as shown in Figure 8, thereby has further increased the intensity of described base part 5, ensures the service life of described filling pipe end.
In other embodiments, described bus also can be the recessed camber line of other shapes, or the fovea superior camber line of other shapes, reduces the goal of the invention that base part stress is concentrated as long as can satisfy the present invention.
In the present embodiment, described ring-type air drain 6, described ventilative circumferential weld 9 and two described passages can feed other gases, and the quantity of described passage can also change according to actual needs.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (10)
1. tundish ventilating filling pipe end comprises tubular portion (3) and forms the base part (5) of through hole; The endoporus of the described through hole of described base part (5) and described tubular portion (3) is configured for the passage (11) poured into a mould jointly; Described base part (5) is near the bottom of described tubular portion (3); It is characterized in that: described base part (5) is made up of cylindrical part that is provided with near described bottom surface and the round platform part (4) that is arranged on described cylindrical part top; The bus of described round platform part (4) is a camber line, and the side that this bus forms constitutes clamping face (41).
2. tundish ventilating filling pipe end according to claim 1 is characterized in that: described filling pipe end bottom is provided with sealing surface body (10); Described sealing surface body (10) is gone up and is provided with ring-type air drain (6) around described passage (11), and described ring-type air drain (6) cooperates formation sealing cushion air drain with the submersed nozzle sealing surface; The lower surface of described sealing surface body (10) is the sliding sealing surface that cooperates with described submersed nozzle sealing surface.
3. tundish ventilating filling pipe end according to claim 1 and 2 is characterized in that: described bus is recessed camber line.
4. tundish ventilating filling pipe end according to claim 1 and 2 is characterized in that: described bus is recessed circular arc line.
5. tundish ventilating filling pipe end according to claim 4 is characterized in that: the arc radius scope of described circular arc line is 20mm to 120mm.
6. tundish ventilating filling pipe end according to claim 1 and 2 is characterized in that: described tubular portion (3) has a main part (31); Described main part (31) and described base part (5) are made into the parts of an integral body.
7. tundish ventilating filling pipe end according to claim 6 is characterized in that: described tubular portion (3) also comprises and is arranged on the control stream unit (1) of described main part (31) away from described base part (5) one ends; And one deck means for ventilation (2) that is arranged on the inboard of described main part (31), form ventilative circumferential weld (9) between described means for ventilation (2) and the described main part (31); Form two passages on the described clamping face (41), one first passage (81) is communicated with described ventilative circumferential weld (9), and another second passage (82) is communicated with described ring-type air drain (6), forms two not connected aerating systems.
8. tundish ventilating filling pipe end according to claim 7 is characterized in that: described round platform part (4) is provided with sealing ring (12) in the position of described first passage (81) and described second passage (82).
9. tundish ventilating filling pipe end according to claim 1 and 2 is characterized in that: the cylindrical of the upper limb of described clamping face (41) and described tubular portion (3) is tangent.
10. tundish ventilating filling pipe end according to claim 1 and 2 is characterized in that: the outer surface of described base part (5) is coated with box hat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101469891A CN100571930C (en) | 2008-08-29 | 2008-08-29 | A kind of tundish ventilating filling pipe end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101469891A CN100571930C (en) | 2008-08-29 | 2008-08-29 | A kind of tundish ventilating filling pipe end |
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| Publication Number | Publication Date |
|---|---|
| CN101342589A CN101342589A (en) | 2009-01-14 |
| CN100571930C true CN100571930C (en) | 2009-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008101469891A Active CN100571930C (en) | 2008-08-29 | 2008-08-29 | A kind of tundish ventilating filling pipe end |
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| CN (1) | CN100571930C (en) |
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- 2008-08-29 CN CNB2008101469891A patent/CN100571930C/en active Active
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| CN101342589A (en) | 2009-01-14 |
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Effective date of registration: 20171213 Address after: 457000 the Yellow River Road, Henan, Puyang Patentee after: PRCO Functional Refractories Co., Ltd. Address before: 457100 Pui high temperature material (Group) Limited by Share Ltd of Puyang West Ring Road, Puyang County, Henan Province Patentee before: Puyang Refractories Group Co., Ltd. |
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