CN102672124B - Continuous casting equipment and method of gradient steel materials - Google Patents
Continuous casting equipment and method of gradient steel materials Download PDFInfo
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- CN102672124B CN102672124B CN201210124563.2A CN201210124563A CN102672124B CN 102672124 B CN102672124 B CN 102672124B CN 201210124563 A CN201210124563 A CN 201210124563A CN 102672124 B CN102672124 B CN 102672124B
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- baffle plate
- tundish
- crystallizer
- continuous casting
- molten steel
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Abstract
The invention provides continuous casting equipment of gradient steel materials. The continuous casting equipment comprises a crystallizer, baffles, a first tundish and a second tundish, wherein the baffles are arranged in the crystallizer and divide the crystallizer into a baffle inside area and a baffle outside area; the first tundish is arranged above the crystallizer; molten steel in the first tundish is injected into the baffle outside area of the crystallizer via a first submerged nozzle; the second tundish is arranged above the crystallizer; and molten steel in the second tundish is injected into the baffle inside area of the crystallizer via a second submerged nozzle. The environmental pollution can be avoided and the production cost is lowered by utilizing the continuous casting equipment for continuous casting.
Description
Technical field
The present invention relates to a kind of continuous casting installation for casting and continuous cast method of ferrous materials, more particularly, the present invention relates to a kind of continuous casting installation for casting and continuous cast method of gradient ferrous materials.
Background technology
The surface treatment of material refers to that the method by machinery, physics or chemistry makes material surface or top layer have the processing procedure of property.Such as the method for invading plating, thermal spraying, thermo-chemical treatment by heat, improve corrosion resistance, wearability of material etc.In ferrous materials, normally used process for treating surface has the technology such as carburizing, nitriding, carbo-nitriding, these process for treating surface are especially applied to the materials such as pinion steel, bearing steel, abrasion-resistant stee, make steel surface there is high rigidity and high-wearing feature, and heart portion have higher toughness and intensity.Yet thermo-chemical treatment exists many inevitable shortcomings, take carburizing as example, except environmental pollution, resource consumption, cost increase, also may cause internal oxidation, grain coarsening, separate out the defects such as net carbide.If ferrous materials has certain component gradient, can reduce or omit some process of surface treatment, so the production of gradient ferrous materials have certain economic implications and social effect.
Continuous casting, continuous casting steel machine, is constantly the molten steel after refining to be joined in crystallizer, and the molten steel forming technique of pulling out from crystallizer below after coagulation forming.If can produce gradient ferrous materials in casting process, can economize on resources and reduce costs.
Summary of the invention
In order to solve the aforementioned problems in the prior, the invention provides a kind of continuous casting installation for casting of gradient ferrous materials, described continuous casting installation for casting comprises: crystallizer; Baffle plate, is arranged in crystallizer, and crystallizer is divided into baffle plate inside region and baffle plate exterior lateral area; The first tundish, is positioned at crystallizer top, by the first submersed nozzle, the molten steel in the first tundish is injected in the baffle plate exterior lateral area of crystallizer; The second tundish, is positioned at crystallizer top, by the second submersed nozzle, the molten steel in the second tundish is injected in the baffle plate inside region of crystallizer.
Preferably, the continuous casting installation for casting of described gradient ferrous materials also comprises support, and described baffle plate is fixed to described support.
Preferably, the volumetric ratio of the first tundish and the second tundish is essentially the volumetric ratio of baffle plate exterior lateral area and baffle plate inside region.
Preferably, the lower end of described baffle plate is higher 5 centimetres to 10 centimetres than the lower surface of molten steel.The lower end of the first submersed nozzle and the second submersed nozzle is lower 5 centimetres to 10 centimetres than the upper end of baffle plate.
According to embodiments of the invention, the molten steel in the molten steel in the first tundish and the second tundish has different compositions.The flow and the ratio of flow that injects the molten steel of baffle plate inside region that inject the molten steel of baffle plate exterior lateral area are greater than the volumetric ratio of the first tundish and the second tundish.
In addition, the present invention also provides a kind of continuous cast method of gradient ferrous materials, described continuous cast method is used above-mentioned continuous casting installation for casting to carry out continuous casting, when utilizing described continuous casting installation for casting to carry out continuous casting, baffle plate exterior lateral area and baffle plate inside region that the molten steel of heterogeneity enters crystallizer from the first tundish and the second tundish respectively, obtain having the gradient ferrous materials of high solutes content outside, solute gradient layer and sandwich layer.
Utilization is carried out continuous casting according to the continuous casting installation for casting of gradient ferrous materials of the present invention, can avoid environmental pollution, and has reduced production cost.
Accompanying drawing explanation
By with reference to accompanying drawing, the present invention being described in detail, it is more obvious that the features and advantages of the present invention will become.
Fig. 1 is the cutaway view illustrating according to the continuous casting installation for casting of the gradient ferrous materials of the embodiment of the present invention.
The specific embodiment
Hereinafter, describe with reference to the accompanying drawings embodiments of the invention in detail.
Fig. 1 is the cutaway view illustrating according to the continuous casting installation for casting of the gradient ferrous materials of the embodiment of the present invention.In Fig. 1, label 1 is the first tundish, and label 2 is the second tundish, and label 3 is molten steel, label 4 is slag, label 5 is crystallizer, and label 6 is baffle plate, and label 7 is the first submersed nozzle, label 8 is the second submersed nozzle, label 9 is that high solutes content is outer, and label 10 is solute gradient layer, and label 11 is sandwich layer.
According to the continuous casting installation for casting of the gradient ferrous materials of the embodiment of the present invention, comprise: crystallizer 5, is equipped with molten steel 3 and slag 4 in crystallizer 5; Baffle plate 6, is positioned at crystallizer 5, thereby crystallizer 5 is divided into baffle plate inside region and baffle plate exterior lateral area two parts; The first tundish 1, injects the molten steel in the first tundish 1 by the first submersed nozzle 7 the baffle plate exterior lateral area of crystallizer 5; The second tundish 2, injects the molten steel in the second tundish 2 by the second submersed nozzle 8 the baffle plate inside region of crystallizer 5.
Here, baffle plate exterior lateral area is the region between baffle plate 6 and crystallizer 5, and the volume of baffle plate exterior lateral area is V1; Baffle plate inside region be baffle plate 6 towards the region at molten steel center, and the volume of baffle plate inside region is V2.Preferably, the volumetric ratio of the first tundish 1 and the second tundish 2 is approximately V1/V2, that is, the volumetric ratio of the first tundish 1 and the second tundish 2 is essentially V1/V2.Preferably, the cross section of baffle plate 6 is similar to the shape of the cross section of crystallizer 5, thereby obtains the effect that better stops MOLTEN STEEL FLOW.
In addition, according to the continuous casting installation for casting of the gradient ferrous materials of the embodiment of the present invention, can also comprise support (not shown), thereby make baffle plate 6 be fixed to support by attaching parts (not shown).
Preferably, 5 to 10 centimetres of the lower end of baffle plate 6 and the lower surface of molten steel distances, that is, the lower end of baffle plate 6 is higher 5 centimetres to 10 centimetres than the lower surface of molten steel.Preferably, the first submersed nozzle 7 and the degree of depth of the second submersed nozzle 8 in molten steel are lower 5 centimetres to 10 centimetres than the upper end of baffle plate 6.
When employing is carried out continuous casting according to the continuous casting installation for casting of the gradient ferrous materials of the embodiment of the present invention, the molten steel of heterogeneity is housed in the first tundish 1 and the second tundish 2, and the molten steel in the first tundish 1 and the second tundish 2 is injected in baffle plate exterior lateral area and baffle plate inside region by the first submersed nozzle 7 and the second submersed nozzle 8 respectively.
As required, can regulate the molten steel composition in the first tundish 1 and the second tundish 2.For example, for example, for a certain element (carbon), this constituent content of the molten steel in the first tundish 1 can be adjusted to this constituent content that is greater than the molten steel in the second tundish 2.Such as, the carbon content of molten steel in the first tundish 1 can be adjusted to the carbon content that is greater than the molten steel in the second tundish 2.
In casting process, preferably, the ratio of the molten steel influx of baffle plate exterior lateral area and baffle plate inside region is slightly larger than V1/V2.Doing is like this that with respect to the molten steel of baffle plate inside region, baffle plate exterior lateral area molten steel cools is fast because in process of setting, and volume contraction is fast, and in order to guarantee the stable of liquid level, the molten steel influx pouring into is slightly larger than V1/V2.In addition, in casting process, owing to being positioned at the molten steel of baffle plate 6 both sides, do not have to obtain the uniform molten steel of composition enough diffusion times, so the molten steel solidification of heterogeneity forms the steel billet of finite concentration gradient.That is, in the region near the inner surface of crystallizer 5, form high solutes content skin 9, in the middle part steel water-setting solid of crystallizer 5, become sandwich layer 11, between high solutes content outer 9 and sandwich layer 11, form solute gradient layer 10.
According to the continuous casting installation for casting of gradient ferrous materials of the present invention and continuous cast method, by place baffle plate in the molten steel of crystallizer, molten steel is divided into baffle plate inside region and baffle plate exterior lateral area, and by two tundish, to the zones of different of crystallizer, inject the molten steel of heterogeneity, thereby can control the surface composition of the ferrous materials obtaining after continuous casting, that is, make the surface component of ferrous materials different with internal composition, thereby can obtain having the ferrous materials of component gradient.
Compare with situation about by chemical heat treatment method etc., the surface of ferrous materials being processed in prior art, continuous cast method of the present invention can be avoided environmental pollution, and has reduced production cost.The ferrous materials that the continuous cast method of gradient ferrous materials of the present invention obtains can be for the production of the non-ferrous metal gradient composites such as large scale flat part or Mg/Al, Cu/Al.
Although the mode with example illustrates and described the present invention, scope of the present invention is not subject to the restriction of above-described embodiment.Without departing from the present invention, can carry out various modifications and change to above-described embodiment.
Claims (4)
1. a continuous casting installation for casting for gradient ferrous materials, is characterized in that described continuous casting installation for casting comprises:
Crystallizer;
Baffle plate, is arranged in crystallizer, and crystallizer is divided into baffle plate inside region and baffle plate exterior lateral area;
The first tundish, is positioned at crystallizer top, by the first submersed nozzle, the molten steel in the first tundish is injected in the baffle plate exterior lateral area of crystallizer;
The second tundish, is positioned at crystallizer top, by the second submersed nozzle, the molten steel in the second tundish is injected in the baffle plate inside region of crystallizer,
Wherein, the lower end of baffle plate is higher 5 centimetres to 10 centimetres than the lower surface of molten steel, and the lower end of the first submersed nozzle and the second submersed nozzle is lower 5 centimetres to 10 centimetres than the upper end of baffle plate,
The ratio of the molten steel influx of baffle plate exterior lateral area and baffle plate inside region is greater than the volumetric ratio of baffle plate exterior lateral area and baffle plate inside region.
2. the continuous casting installation for casting of gradient ferrous materials according to claim 1, is characterized in that the continuous casting installation for casting of described gradient ferrous materials also comprises support, and described baffle plate is fixed to described support.
3. the continuous casting installation for casting of gradient ferrous materials according to claim 1, is characterized in that molten steel in the first tundish and the molten steel in the second tundish have different compositions.
4. the continuous cast method of a gradient ferrous materials, it is characterized in that described continuous cast method is used according to claim 1 to the continuous casting installation for casting described in any one in claim 3 carries out continuous casting, when utilizing described continuous casting installation for casting to carry out continuous casting, baffle plate exterior lateral area and baffle plate inside region that the molten steel of heterogeneity enters crystallizer from the first tundish and the second tundish respectively, obtain having the gradient ferrous materials of high solutes content outside, solute gradient layer and sandwich layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210124563.2A CN102672124B (en) | 2012-04-25 | 2012-04-25 | Continuous casting equipment and method of gradient steel materials |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210124563.2A CN102672124B (en) | 2012-04-25 | 2012-04-25 | Continuous casting equipment and method of gradient steel materials |
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| CN102672124A CN102672124A (en) | 2012-09-19 |
| CN102672124B true CN102672124B (en) | 2014-11-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107127312B (en) * | 2017-06-07 | 2022-11-22 | 山东钢铁股份有限公司 | Equipment and method for producing composite continuous casting billet |
| CN108526425B (en) * | 2018-03-30 | 2020-09-01 | 鞍钢股份有限公司 | Composite metal continuous casting device and continuous casting method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174106A (en) * | 1997-04-15 | 1998-02-25 | 华南理工大学 | Continuous and semicontinuous method preparing gradient material |
| CN1413782A (en) * | 2002-11-22 | 2003-04-30 | 大连理工大学 | Electromagnetic continuous casting method of multilayer material |
| CA2462965A1 (en) * | 2001-10-23 | 2003-05-01 | Alcoa Inc. | Simultaneous multi-alloy casting |
| CN101549392A (en) * | 2009-04-24 | 2009-10-07 | 中国铝业股份有限公司 | An electromagnetic continuous casting method and device of complex ingot blank |
| CN102248151A (en) * | 2011-07-03 | 2011-11-23 | 大连理工大学 | Continuous casting device and method of metal-ceramic lamellar compound casting blank |
| CN202606826U (en) * | 2012-04-25 | 2012-12-19 | 莱芜钢铁集团有限公司 | Continuous casting device of gradient steel material |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01313154A (en) * | 1988-06-10 | 1989-12-18 | Furukawa Electric Co Ltd:The | Method for continuously casting combined metal material |
| JPH08197195A (en) * | 1994-11-22 | 1996-08-06 | Kawasaki Steel Corp | Method for continuous casting of molten steel and device therefor |
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2012
- 2012-04-25 CN CN201210124563.2A patent/CN102672124B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174106A (en) * | 1997-04-15 | 1998-02-25 | 华南理工大学 | Continuous and semicontinuous method preparing gradient material |
| CA2462965A1 (en) * | 2001-10-23 | 2003-05-01 | Alcoa Inc. | Simultaneous multi-alloy casting |
| CN1413782A (en) * | 2002-11-22 | 2003-04-30 | 大连理工大学 | Electromagnetic continuous casting method of multilayer material |
| CN101549392A (en) * | 2009-04-24 | 2009-10-07 | 中国铝业股份有限公司 | An electromagnetic continuous casting method and device of complex ingot blank |
| CN102248151A (en) * | 2011-07-03 | 2011-11-23 | 大连理工大学 | Continuous casting device and method of metal-ceramic lamellar compound casting blank |
| CN202606826U (en) * | 2012-04-25 | 2012-12-19 | 莱芜钢铁集团有限公司 | Continuous casting device of gradient steel material |
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