CN202316935U - Continuous casting crystallizer - Google Patents
Continuous casting crystallizer Download PDFInfo
- Publication number
- CN202316935U CN202316935U CN2011204269678U CN201120426967U CN202316935U CN 202316935 U CN202316935 U CN 202316935U CN 2011204269678 U CN2011204269678 U CN 2011204269678U CN 201120426967 U CN201120426967 U CN 201120426967U CN 202316935 U CN202316935 U CN 202316935U
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- region
- zone
- coating
- continuous cast
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Continuous Casting (AREA)
Abstract
The utility model discloses a continuous casting crystallizer. The inner surface of the continuous casting crystallizer is provided with a coating, and is partitioned into a region a, a region b and a region c, wherein the region a is a region ranging from the top of the crystallizer to a position which is 80-100 millimeters below the top of the crystallizer; the region b is a region ranging from the lower boundary of the region a to a position which is 5-30 millimeters below lower boundary of the region a; the region c is a region from the lower boundary of the region b to the bottom region of the crystallizer; surface coatings of the region a and the region b are made of wear-resistant materials; the surface coating of the region b is made of a material which is selected from pure iron or high carbon steel or is the same as continuous casting steel; a plurality of water tanks are arranged continuously outside the crystallizer from bottom to top; the lower part of one of the water tanks is arranged in a region ranging from the top of the crystallizer to a position which is S1+2S2+200 millimeters below the top of the crystallizer; S1 refers to the height of the region a; S2 refers to the vibration amplitude of the crystallizer; and the units of S1 and S2 are millimeters. According to the continuous casting crystallizer, the surface tension of molten steel on the inner surface of the crystallizer can be lowered, the strength of the top of a lower kish and the lower part of an upper kish is increased, deformation is reduced, and oscillation marks are reduced.
Description
Technical field
The utility model relates to metallurgical technology field, refers to a kind of continuous cast mold particularly.
Background technology
Continuous casting process technology is because of improving slab quality, improve working conditions and have recovery rate of iron height, energy savings, being convenient to realize that advantage such as mechanical automation is adopted by most steel plant.In the continuous casting production process, molten steel solidifies under cooling condition and adheres on the crystallizer inwall, forms scull.Make progress vibration period at crystallizer; The newborn scull in top is bonded in crystallizer wall and moves upward therewith; This moment, the scull of bottom then moved downward with casting speed, and the molten steel of between just is directly exposed on the crystallizer wall like this, forms one " secondary meniscus ".After the negative slip phase began, the top scull moved downward with crystallizer, and it is coupled in the process of catching up with the bottom scull, to generate " solidifying bridge ".When negative slip phase crystallizer moves downward speed and reaches maximum; Top scull and bottom scull seam, in crystallizer negative slip seam process, the bottom scull has stopped that the top scull moves with crystallizer; Played the effect of the demoulding; Because two parts scull interacts up and down, inwardly extruding has just formed one oscillation mark in the process of seam.When oscillation mark is serious, surface quality of continuously cast slab is worsened, and produce the inner crackle that generates in position, cause pouring into a mould the composition of steel segregation at oscillation mark.
Traditional internal surface of crystallizer is chromium, nickel and various alloy coat, mainly is in order to increase the wearability of crystallizer, but in the process of producing continuous casting billet; Molten steel makes this place's molten steel away from internal surface of crystallizer at " the secondary meniscus " that internal surface of crystallizer forms, and again because the outside of crystallizer has only a cooling water tank, cooling water upwards flows from the crystallizer bottom; Cooling water temperature rises gradually; At secondary meniscus place, tentatively living up and down scull intensity is less, causes in crystallizer negative slip seam process, being out of shape bigger; The oscillation mark that forms is darker, the serviceability of influence cast steel.
Summary of the invention
The purpose of the utility model is exactly that the continuous cast mold that a kind of oscillation mark that in the process of producing continuous casting billet, forms is more shallow, can obviously improve surface quality of continuously cast slab will be provided.
For realizing above-mentioned purpose; The continuous cast mold that the utility model designed; Its inner surface is provided with coating and is divided into a, b, three zoness of different of c; Said a zone is the crystallizer top to its 80-100mm zone down, said b zone be a zone lower limits 25-30mm is regional down to it, said c zone is regional lower limits to the crystallizer bottom section of b.Wherein, said a zone is a high-abrasive material with c region surface coating, said b region surface coating be pure iron, high-carbon steel, high rigidity ferrous alloy or with the steel grade same material of casting in a kind of.The outside of said crystallizer is provided with a plurality of cooling water tanks continuously to the top from the bottom; And the bottom of one of them water tank is located at from the crystallizer top down to S1+2S2+200mm; Wherein S1 is a region height, and S2 is the amplitude of mold oscillation, and the unit of S1 and S2 is mm.
Further, the angle of wetting between said a zone coating high-abrasive material and pour steel is not less than 120 degree.
Further, said a zone and c region surface coating high-abrasive material are a kind of in ceramic material, chromium, nickel, titanium nitride, vanadium nitride, chromium nitride, chrome green, the vanadic anhydride.
Further, said a, b, c zone coating gross thickness are 0.06～3mm.
Further, said b zone coating is multilayer, and overlay coating thickness is 0.06～1mm.
Because crystallizer is following in working order; Molten steel surface be provided with to zone between the secondary meniscus pure iron, high-carbon steel, high rigidity ferrous alloy or with the coating of casting steel grade same material and so on; Reduced the surface tension of molten steel at internal surface of crystallizer; The secondary meniscus that alleviation even elimination molten steel form on internal surface of crystallizer makes molten steel near crystallizer.Owing to have additional cooling water tank at crystallizer secondary meniscus place; Can increase the intensity of scull top, bottom and scull bottom, top, make to have enough intensity when the scull seam together up and down, promote opposing molten steel impact capacity; Reduce distortion, thereby reduce the generation of oscillation mark.
Description of drawings
Fig. 1 is the structural representation of continuous cast mold in the prior art.
Fig. 2 is the structural representation of the continuous cast mold of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is done further to specify.
As can beappreciated from fig. 1; The inner surface of the copper coin 3 of existing continuous cast mold is coated with identical coating 2 from top to bottom; This coating 2 can be chromium, nickel or its alloy; Also can be titanium nitride, vanadium nitride, chromium nitride, chrome green or vanadic anhydride, mainly is in order to increase the wearability of crystallizer, to make on the molten steel and the continuous cast mold surface of inner 1 cast of crystallizer and form bigger angle of wetting.The continuous cast mold outside has only a cooling water tank 4, and cooling water temperature raises from bottom to up gradually.
As can beappreciated from fig. 2; The inner surface coating 2 of the copper coin 3 of the continuous cast mold of the utility model is divided into a, b, three different zones of c from top to bottom; Wherein a zone is the crystallizer top to its 80-100mm zone down, and b zone be a zone lower limits under it 25-30mm is regional.In the production practices, through the control operation parameter, making liquid steel level and crystallizer distance from top after inner 1 pour steel of crystallizer is 80-100mm, and makes the secondary meniscus place of formation just in time be in the b zone, and the c zone is then just below the secondary meniscus.The a zone is identical with the coating material of prior art with c region surface coating material; And b region surface coating be pure iron, high-carbon steel or with casting steel grade identical materials in a kind of; Can reduce the surface tension of molten steel like this at internal surface of crystallizer; The secondary meniscus that alleviation even elimination molten steel form on internal surface of crystallizer makes molten steel near crystallizer.The outside of continuous cast mold is provided with two cooling water tanks 41,42 continuously to the top from the bottom, and one of them face of cooling water tank 41,42 is copper coin 3, and the total height of cooling water tank 41,42 is the length of copper coin 3, and the height of bottom cooling water tank 41 is:
H=(L-S1-2S2-200) mm, wherein L is the total length (being the length of copper coin 3) of crystallizer, S1 is a region height, the amplitude when S2 is crystallizer work, size is generally 3-8mm.
Cooling water tank also can copper coin 3 for one face vertically is provided with manyly, as long as guarantee that the total height of all cooling water tanks is the length of copper coin 3, and the bottom of one of them water tank is located at from the crystallizer top down to (S1+2S2+200) mm and gets final product.
The cooling water of cooling water tank 41,42 flows from bottom to up.Owing to descend S1+2S2+200mm to set up cooling water tank from the crystallizer top to it; The temperature at molten steel secondary meniscus place can be fallen lowlyer like this; And can increase the intensity of scull top, bottom and scull bottom, top; Make to have enough intensity when the scull seam together up and down, promote opposing molten steel impact capacity, reduce distortion.Therefore, the continuous cast mold of the utility model can reduce depth of chatter mark, improves the quality of continuous casting billet.Adopt the continuous cast mold of the utility model; At crystallizer vibration amplitude is that 3.5mm, vibration frequency are that 180/ minute, cold in-water temperature are 30-35 ℃; Leaving water temperature is controlled to be under the situation that is not higher than 6 ℃ of inflow temperatures, and the continuous casting billet depth of chatter mark of production is the 30-50% of the continuous casting billet depth of chatter mark of prior art production.
Claims (6)
1. continuous cast mold; It is characterized in that: the inner surface of said crystallizer is provided with coating and is divided into a, b, three zoness of different of c; Said a zone is that 80-100mm is regional down to it at the crystallizer top; Said b zone is that a zone lower limits is regional to its following 25-30mm, and said c zone is b zone lower limits to a crystallizer bottom section, wherein; Said a zone is a high-abrasive material with c region surface coating, said b region surface coating be pure iron, high-carbon steel, high rigidity ferrous alloy or with the steel grade same material of casting in a kind of; The outside of said crystallizer is provided with a plurality of cooling water tanks continuously to the top from the bottom; And the bottom of one of them water tank is located at from the crystallizer top down to S1+2S2+200mm; Wherein S1 is a region height, and S2 is the amplitude of mold oscillation, and the unit of S1 and S2 is mm.
2. continuous cast mold according to claim 1 is characterized in that: the angle of wetting between said a zone coating high-abrasive material and pour steel is not less than 120 degree.
3. continuous cast mold according to claim 1 is characterized in that: said a zone and c region surface coating high-abrasive material are a kind of in ceramic material, chromium, nickel, titanium nitride, vanadium nitride, chromium nitride, chrome green, the vanadic anhydride.
4. according to claim 1 or 2 or 3 described continuous cast molds, it is characterized in that: said a is regional, b is regional, the regional coating gross thickness of c is 0.06～3mm.
5. according to claim 1 or 2 or 3 described continuous cast molds, it is characterized in that: said b zone coating is multilayer, and overlay coating thickness is 0.06～1mm.
6. continuous cast mold according to claim 4 is characterized in that: said b zone coating is multilayer, and overlay coating thickness is 0.06～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204269678U CN202316935U (en) | 2011-11-01 | 2011-11-01 | Continuous casting crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204269678U CN202316935U (en) | 2011-11-01 | 2011-11-01 | Continuous casting crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202316935U true CN202316935U (en) | 2012-07-11 |
Family
ID=46428932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204269678U Expired - Lifetime CN202316935U (en) | 2011-11-01 | 2011-11-01 | Continuous casting crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202316935U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563778A (en) * | 2015-10-12 | 2017-04-19 | 宝钢特钢有限公司 | Clad layer used for hot-top crystallizer |
| CN113579859A (en) * | 2021-06-24 | 2021-11-02 | 武汉钢铁有限公司 | Method for prolonging service life of continuous casting crystallizer copper plate under condition of high scrap steel ratio |
-
2011
- 2011-11-01 CN CN2011204269678U patent/CN202316935U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563778A (en) * | 2015-10-12 | 2017-04-19 | 宝钢特钢有限公司 | Clad layer used for hot-top crystallizer |
| CN113579859A (en) * | 2021-06-24 | 2021-11-02 | 武汉钢铁有限公司 | Method for prolonging service life of continuous casting crystallizer copper plate under condition of high scrap steel ratio |
| CN113579859B (en) * | 2021-06-24 | 2022-07-19 | 武汉钢铁有限公司 | Method for prolonging service life of continuous casting crystallizer copper plate under condition of high scrap steel ratio |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105522126B (en) | The compound roll shaft manufacturing process of high-performance and equipment | |
| CN104399929A (en) | Method for reducing longitudinal division of weather-proof steel continuously cast slab | |
| CN105312541B (en) | Nickel-chrome-molybdenum alloy cast iron composite roll manufacturing process and equipment in a kind of modified forged steel roll neck | |
| CN105364042A (en) | Method for controlling crystalline structure uniformity of large-section heavy rail steel cast blank | |
| CN105397067B (en) | Forged steel roll neck alloy nodular cast iron composite roll manufacturing process and equipment | |
| CN102806315A (en) | Method for lost foam casting of bimetal bi-solution composite crusher hammer head | |
| CN101279362A (en) | Method for manufacturing low-segregation large-sized steel ingot by quickening cooling of bottom and lateral wall | |
| CN104259413A (en) | Continuous casting system and process producing large-specification elliptical billets | |
| CN202316935U (en) | Continuous casting crystallizer | |
| CN101433948B (en) | Round billet continuous casting machine with especially big sectional plane | |
| CN203764914U (en) | Efficient crystallizer for continuous casting | |
| CN103317108B (en) | Continuous casting billet oscillation mark control method | |
| CN201353635Y (en) | Round billet conticaster with extra large section | |
| CN201304475Y (en) | Continuous casting device for producing round billet with diameter being more than or equal to Phi 800 mm on straight-form conticaster | |
| CN106011388A (en) | Smelting process capable of improving flaw detection qualified rate of cast first-furnace heavy rail | |
| CN1133519C (en) | Method of applying two-frequency electromagnetic field to improve quality of continuous casting | |
| CN116020987A (en) | Continuous casting method of high alloy steel Cr12MoV series | |
| CN105750534A (en) | IF steel tundish and manufacturing and application methods thereof | |
| CN206716962U (en) | A kind of casting mould of heavv section Slab thin wall casting | |
| CN202527694U (en) | Tundish structure capable of reducing blank casting inclusions | |
| CN109226702A (en) | The method for improving 40Cr13 static ingot internal soundness | |
| CN204209084U (en) | A kind of continuous casting system producing the oval base of large gauge | |
| CN103128268B (en) | For the method for low temperature shake out in large extra thick plate blank | |
| CN106493313A (en) | One Albatra metal floating pouring procedure | |
| CN207746378U (en) | A kind of hollow thin-wall cast aluminium control arm metal gravity verts mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170619 Address after: 430074, No. 16 Guan Shan Road, East Lake hi tech Development Zone, Hongshan District, Hubei, Wuhan Patentee after: Wuhan Steel Engineering Technology Group Communication Co., Ltd. Address before: 15 Wuchang, Wuhan Friendship Avenue, No. 999, block A, layer (Wuhan Iron and steel science and technology innovation department), No. 430080, Patentee before: Wuhan Iron & Steel (Group) Corp. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 430084 floor 15-22, building 4, Wuhan International Steel Logistics Service Center (Ganggu), Qingshan Town, Qingshan District, Wuhan City, Hubei Province Patentee after: Baoxin software (Wuhan) Co., Ltd Address before: 430074 No. 16 Guan Shan Road, East Lake hi tech Zone, Hongshan District, Wuhan, Hubei Patentee before: Wuhan Steel Engineering Technology Group Communication Co., Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |
|
| CX01 | Expiry of patent term |