CN202701326U - An improved tundish and improved flow stabilizers for a billet caster - Google Patents
An improved tundish and improved flow stabilizers for a billet caster Download PDFInfo
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- CN202701326U CN202701326U CN 201220176058 CN201220176058U CN202701326U CN 202701326 U CN202701326 U CN 202701326U CN 201220176058 CN201220176058 CN 201220176058 CN 201220176058 U CN201220176058 U CN 201220176058U CN 202701326 U CN202701326 U CN 202701326U
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- tundish
- flow
- molten steel
- flow straightener
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Abstract
The utility model provides an improved tundish and improved flow stabilizers for a billet caster and relates to the field of metallurgical continuous casting equipment. The tundish and flow stabilizers are used in a continuous casting process. The tundish is formed by two special-shaped tundish bodies which are arranged symmetrically; the inside of each tundish body is provided with one flow stabilizer; the volume of the two tundish bodies is 50-60% of the volume of a steel ladle; an impact part of each flow stabilizer is provided with a barrel-shaped molten steel impact area with a small-diameter upper opening and a large-diameter inner opening; two sides of the barrel-shaped area of each flow stabilizer are provided with flow stabilizer retaining walls; and each of the flow stabilizer retaining walls on the two sides is provided with a shunt hole with the opening facing the upward side in an inclined manner. The volume of the tundish is improved, so that duration of stay of molten steel is prolonged; the flow stabilizers are provided with the molten steel impact areas, retaining walls and the shunt holes, so that flow direction of the molten steel is changed, the cost for refractory material is saved and the flow field of the tundish is optimized; and accordingly, the problems of a conventional tundish that the volume is small, the duration of stay of the molten steel is short, and occluded foreign substances cannot float upward and be removed are solved.
Description
Technical field
The utility model relates to a kind of tundish and flow straightener that uses in continuous casting is produced, belong to the metallurgical continuous casting equipment technical field.
Background technology
Tundish is not only being born the temporary transient function of storing molten steel, distribution molten steel, realization sequence casting and stable molten steel flow, reducing the Mold static pressure as the transition container that connects ladle and crystallizer, or an important metallurgical reaction container.Its metallurgical function mainly is summarized as: (1) purification function.Prevent the secondary oxidation of molten steel, improve the flow regime of molten steel, prolong the time of staying of molten steel in tundish, impel inclusion floating.(2) refining function.Adopt additional metallurgical technology, finish the molten steel component fine setting, improve inclusion morphology, molten steel temperature is accurately controlled etc.
According to the Tundish Flow Field situation, flow straightener, barricade and gear dam are set in tundish, change the flow direction and the fluidised form of molten steel, prolong the time that molten steel flows to the mouth of a river, can effectively promote inclusion floating to separate, evenly molten steel composition and temperature reach the function of Metal in Tundish metallurgy.Flow straightener is to stablize middle water containing opening zone MOLTEN STEEL FLOW, prevents that slag is involved in molten steel and causes continuous casting billet internal soundness defective, promotes inclusion floating, reduces the functional refractory material of molten steel splash.
The tundish capacity generally is 20%-40% of steel ladle, and the trend of increase is arranged in recent years, and when sequence casting, the molten steel that tundish is stored should be able to guarantee normally to pour into a mould 5min.Increasing the tundish capacity can improve the time of staying of molten steel in tundish and be conducive to inclusion floating and remove.
Traditional tundish exists the bag type less than normal, the tundish finite capacity, short shortcoming of molten steel time of staying in tundish, Tundish Flow Field generally passes through to arrange flow straightener, barricade, and the tundish flow control measures such as gear dam reach the effect of optimizing Tundish Flow Field, it is more because the flow control facility is set, exist the time of even watering short, anti-material corrodes and easily is involved in the molten steel, affects the shortcoming of Molten Steel Cleanliness.
The utility model content
Technical problem to be solved in the utility model provides that a kind of tundish capacity is large, the molten steel time of staying long, Tundish Flow Field rationally, remove the effective improved billet caster of field trash in the molten steel with tundish and flow straightener.
The technical scheme that solves the problems of the technologies described above is:
A kind of improved billet caster is with tundish and flow straightener, its improvements are, tundish is comprised of two special-shaped tundish, and two special-shaped tundish are symmetrical, in each tundish flow straightener is set, the capacity of two tundish is the 50-60% of steel ladle capacity.
Above-mentioned improved billet caster is with tundish and flow straightener, the molten steel impact zone of a tubbiness that back cut diameter is little, the internal orifice diameter is large is set on the impact site of described flow straightener, there is the flow straightener barricade both sides on flow straightener tubbiness zone, and opening tap hole is obliquely upward respectively arranged on the flow straightener barricade of both sides.
Above-mentioned improved billet caster is with tundish and flow straightener, the body thickness of described flow straightener is 350-380mm, the back cut diameter in flow straightener tubbiness zone is that 400-420mm, internal orifice diameter are 500-520mm, both sides flow straightener wall height is 200-220-mm, thickness is 120-130mm, along 90-110mm, the tap hole diameter is 50-60mm to tap hole on the distance of flow straightener barricade middle part, both sides, and angle is the 50-60 degree.
Usefulness of the present utility model is:
The utility model adopts two special-shaped tundish, has increased the molten steel capacity of tundish, reduces gradually from impact zone to tundish terminus area and volume, can prolong the Metal in Tundish time of staying, is conducive to inclusion floating and removes; Flow straightener is owing to being provided with the tubbiness zone simultaneously, molten steel with larger speed by shock at entry to flow straightener bottom, flow straightener is controlled at the cylinder zone with larger turbulent flow, has strengthened the mixing effect of molten steel, be conducive to composition and the temperature of even molten steel, the collision that also is conducive to field trash is grown up; Two tap holes have changed the flow direction of molten steel on the flow straightener barricade, force molten steel to raise up mobile, prolonged the molten steel time of staying, be conducive to the shunting of molten steel and raise up, create reasonable Tundish Flow Field, concentrate on liquid level from tap hole main flow out simultaneously near, the field trash that Collision coagulation generates is nearer apart from the slag liquid level, that is to say that the field trash climb is shorter, be easy to by the absorption of the slag on the slag liquid level, thereby reach the purpose of removing the field trash in the molten steel.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the top view of flow straightener of the present utility model;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the A-A cutaway view of Fig. 2.
Mark is as follows among the figure: tundish 1, tundish involucrum 2, middle water containing opening position 3, flow straightener 4, flow straightener tubbiness zone 5, flow straightener barricade 6, tap hole 7.
The specific embodiment:
The utility model is optimized Tundish Flow Field and is set out from increasing the tundish capacity, tundish 1 is divided into two symmetrical special-shaped tundish, for inverted "L" shaped symmetrical.The design of the special-shaped tundish by two symmetries, tundish 1 capacity is the 50-60% of steel ladle capacity, than the 20-40% that traditional Metal in Tundish capacity is ladleful, the molten steel capacity increases, and has increased the molten steel time of staying.
Show among the figure, in each tundish 1 flow straightener 4 is set, two flow straighteners 4 are set altogether, reach the effect of optimization Tundish Flow Field by the design of flow straightener 4.
Show among the figure, the molten steel impact zone of a tubbiness that back cut diameter is little, the internal orifice diameter is large is set on the impact site of flow straightener 4, there is flow straightener barricade 6 both sides on flow straightener tubbiness zone 5, play the inhibition turbulent flow, the effect of mixing molten steel, opening tap hole 7 is obliquely upward respectively arranged on both sides flow straightener barricade 6, be beneficial to the shunting of molten steel and raise up, obtain more satisfactory Tundish Flow Field.。
The body thickness of flow straightener 4 is 350-380mm, the back cut diameter in flow straightener tubbiness zone 5 is that 400-420mm, internal orifice diameter are 500-520mm, both sides flow straightener barricade 6 highly is 200-220-mm, thickness is 120-130mm, tap hole 7 on flow straightener barricade 6 middle parts, both sides distances along 90-110mm, tap hole 7 diameters are 50-60mm, and angle is the 50-60 degree.
Tundish of the present utility model has increased volume, and the molten steel capacity increases, and being conducive to molten steel increases the time of staying of molten steel in tundish, promotes the removal of field trash; The effect that flow straightener tubbiness zone and flow straightener barricade have played the splendid attire molten steel, suppressed molten steel turbulent flow, mixing molten steel is set; Open tap hole at the flow straightener barricade, play the shunting molten steel, change steel flow to, effect that molten steel is raised up.Flow straightener can play even molten steel and optimize the flow field and reduce the effect that is mingled with.Large capacity tundish, middle Baogang water normal duration of pouring increased approximately about 1 times than traditional tundish time about 10 minutes.Be provided with tundish current stabilizer, molten steel temperature in tundish is tending towards evenly, gets 1-4 stream temperature and compares, and by 30 ℃ of left and right sides temperature differences before transforming, to improved 7 ℃ of left and right sides temperature differences, molten steel flow field is tending towards rationally, and it is even that molten steel temperature in tundish is tending towards.After using the utility model, materials at strand, do the high power metallographic and be mingled with, from the high power metallographic, can find out, be mingled with obvious minimizing in the strand.The increase of the Metal in Tundish time of staying is described, is conducive to the abundant floating of field trash.
The size of an embodiment of the present utility model is as follows:
The body thickness of flow straightener 4 is 350mm, the back cut diameter in flow straightener tubbiness zone 5 is that 420mm, internal orifice diameter are 520mm, both sides flow straightener barricade 6 highly is 200mm, thickness is 120 mm, tap hole 7 on flow straightener barricade 6 middle parts, both sides distances along 100mm, tap hole 7 diameters are 50mm, and angle is 60 degree.
Claims (3)
1. an improved billet caster is with tundish and flow straightener, it is characterized in that: tundish (1) is comprised of two special-shaped tundish, two special-shaped tundish are symmetrical, flow straightener (4) is set in each tundish (1), and the capacity of two tundish (1) is the 50-60% of steel ladle capacity.
2. improved billet caster according to claim 1 is with tundish and flow straightener, it is characterized in that: the molten steel impact zone that a tubbiness that back cut diameter is little, the internal orifice diameter is large is set on the impact site of described flow straightener (4), there is flow straightener barricade (6) upper both sides in flow straightener tubbiness zone (5), and opening tap hole (7) is obliquely upward respectively arranged on both sides flow straightener barricades (6).
3. improved billet caster according to claim 2 is with tundish and flow straightener, it is characterized in that: the body thickness of described flow straightener (4) is 350-380mm, the back cut diameter in flow straightener tubbiness zone (5) is 400-420mm, the internal orifice diameter is 500-520mm, both sides flow straightener barricades (6) highly are 200-220-mm, thickness is 120-130mm, tap hole (7) is upper along 90-110mm in both sides flow straightener barricades (6) middle part distance, tap hole (7) diameter is 50-60mm, and angle is the 50-60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220176058 CN202701326U (en) | 2012-04-24 | 2012-04-24 | An improved tundish and improved flow stabilizers for a billet caster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220176058 CN202701326U (en) | 2012-04-24 | 2012-04-24 | An improved tundish and improved flow stabilizers for a billet caster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202701326U true CN202701326U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220176058 Expired - Lifetime CN202701326U (en) | 2012-04-24 | 2012-04-24 | An improved tundish and improved flow stabilizers for a billet caster |
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| Country | Link |
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| CN (1) | CN202701326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357831A (en) * | 2013-07-30 | 2013-10-23 | 莱芜钢铁集团有限公司 | Tundish multifunctional steady-flow impacting barrel and building method thereof |
| CN105710357A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Tundish flow control device and method |
-
2012
- 2012-04-24 CN CN 201220176058 patent/CN202701326U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103357831A (en) * | 2013-07-30 | 2013-10-23 | 莱芜钢铁集团有限公司 | Tundish multifunctional steady-flow impacting barrel and building method thereof |
| CN103357831B (en) * | 2013-07-30 | 2015-12-09 | 莱芜钢铁集团有限公司 | The multi-functional current stabilization of a kind of tundish impacts bucket and building method thereof |
| CN105710357A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Tundish flow control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |