CN200998764Y - Continuous casting crystallizer - Google Patents
Continuous casting crystallizer Download PDFInfo
- Publication number
- CN200998764Y CN200998764Y CNU2007200674137U CN200720067413U CN200998764Y CN 200998764 Y CN200998764 Y CN 200998764Y CN U2007200674137 U CNU2007200674137 U CN U2007200674137U CN 200720067413 U CN200720067413 U CN 200720067413U CN 200998764 Y CN200998764 Y CN 200998764Y
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Abstract
The utility model discloses a CCM, which comprises two pieces of opposite boards with long edge, and two pieces of boards with short edge between the two boards with long edge. The inner wall of the two pieces of the boards with short edge takes in the shape of arc, the four corners of the CCM are all circular bead. With the inner wall of the two pieces of the boards with short edge being arranged into the shape of arc and the four corners being arranged into circular bead, the section of the slab after moulding takes the shape of kidney and the four corner angles present the circular bead shape. As that, the flanging of the corner angles won't happen on the slab after moulding, which prevents the too quick cooling on the edge and corner parts, the head surface of the board with long edge can cool evenly and slowly, which avoids the defect that a portrait strip-shaped black line generated on the position of 1 to 2 gram from the edge peeling.
Description
Technical field
The utility model relates to the machinery in a kind of sheet billet continuous casting technology, relates in particular to a kind of crystallizer.
Background technology
The crystallizer of at present domestic and international continuous casting unit generally adopts the version of long limit copper coin scale, minor face copper coin movable scale, structural representation as shown in Figure 1, existing continuous cast mold comprises two opposed long limit copper coins 3,4, and inwall is the plane, and two block length limit copper coins are fixture; Also comprise two opposed minor face copper coins 1,2, inwall also is the plane, and minor face copper coin 1,2 is arranged between two long limit copper coins 3,4, is arranged in two sides.Minor face copper coin 1,2 is moving member, and the outside connects hydraulic means 5,6 (or motor drive leading screw) respectively.Minor face copper coin 1,2 drives leading screw by both sides hydraulic means 5,6 or motor and drives, and does the adjusting of width dimensions, can satisfy the requirement of producing the different size blank.The long limit copper coin of crystallizer and minor face copper coin all are provided with the Inlet and outlet water interface of cooling water, and wherein: long limit water inlet 3-1,4-1 are positioned at the copper coin back side, long limit, and long limit delivery port 3-2,4-2 also are positioned at the copper coin back side, long limit; Minor face water inlet 1-1,2-1 are positioned at the minor face copper coin back side, and minor face delivery port 1-2,2-2 also are positioned at the minor face copper coin back side.Inlet and outlet water interface by these cooling waters can be at molten steel through cooling off long limit of steel billet and minor face in the process of crystallizer simultaneously.
Like this, crystallizer has constituted a cuboid frame structure of both ends open up and down.Water the steel mouth and water the steel operation from the upper end, form continuous casting steel billet through supercooling and flow out from the lower end.Because its long limit copper coin 3,4 and minor face copper coin 1,2 are flat shape, the slab of producing is cuboid, and four angles, cross section are wedge angle, and under the crystallizer cooling of water-cooled, the edges and corners cooldown rate of slab is very fast.
By shown in Figure 3, water the steel billet that casts out by existing crystallizer and in the operation of rolling, be subjected to executing power to long side direction, steel billet limit portion corner angle are cooled earlier under the effect of rolling mill compound, sclerosis occurring at limit portion corner angle also outwards routs up, limit portion forms shape shown in Figure 4, make some slag inclusions be rolled into strip edge portion, and roll back generation longitudinal strip black surround defective at 1 to 2 centimeter place of limit portion.
Chinese patent 200420010720.8 is provided with arc copper coin form, but it is a globoidal structure from top to bottom, slab flow direction for a change just, and fail to eliminate black surround defective after the slab hot rolling.
The utility model content
The purpose of this utility model is by changing the crystallizer inner wall shape of continuous casting unit, improve continuous casting billet quality, eliminating continuous casting steel billet produces black surround in hot rolling defective.
The utility model realizes that the technical scheme of above purpose is: a kind of continuous cast mold is provided, comprises two opposed long side plates and two blocks of minor face plates between long side plate, it is characterized in that: described two minor face plate madial walls are circular arc.
The inner cavity surface of minor face plate described in the utility model is smooth curved surface, and it is between two straight long side plates, and the length of minor face plate can be selected plurality of specifications for use according to the thickness of casting steel billet.Watering the long side plate of the steel billet that casts out place is parallel end faces, minor face plate place is the circular arc end face that outwards protrudes, the cross section of steel billet is key-way shape, Jiao Zhu slab the corner angle flange can not occur in course of hot rolling like this, can avoid the too fast cooling of corner part effectively, long side plate place end face can evenly cool off lentamente, and the longitudinal strip black line that makes 1～2 centimeter place of limit portion roll the back generation sticks up the skin defective to be eliminated.
Preferably, four angles of crystallizer are fillet, and four angles of the steel billet that obtains after the casting are fillet like this, can avoid the too fast cooling of steel billet limit portion in the operation of rolling better.
The utility model makes it compared with prior art owing to adopted above technical scheme, has following advantage and good effect:
In the operation of rolling, have uniform limit portion cooling effect with the steel billet after the utility model crystallizer casting, make black line after the hot rolling stick up the skin defective and reduce or eliminate.
Description of drawings
Fig. 1 is existing continuous cast mold structural representation.
Fig. 2 is the utility model continuous cast mold structural representation.
Fig. 3 is for using the steel billet that has the crystallizer casting now at rolling middle section stressing conditions schematic diagram.
Fig. 4 is the distortion situation schematic diagram with the steel billet limit portion in rolling that has the crystallizer casting now.
Fig. 5 is for watering the steel billet that casts out in rolling middle section and the stressing conditions schematic diagram with the utility model crystallizer.
Fig. 6 is for to water the steel billet limit portion situation schematic diagram in the operation of rolling that casts out with the utility model crystallizer.
The specific embodiment
In a specific embodiment of the present utility model, as shown in Figure 2, the utility model is on the basis of existing continuous cast mold, the inwall of minor face copper coin 1 and 2 has been arranged to circular arc, other are provided with constant, promptly also comprise: two long limit copper coins 3,4, and inwall is the plane, minor face copper coin 1,2 is arranged between two long limit copper coins 3,4, is arranged in two sides; Minor face copper coin 1,2 outsides connect hydraulic means 5,6 (or motor drive leading screw) respectively.Minor face copper coin 1,2 drives leading screw by hydraulic means 5,6 or motor and drives, and does the adjusting of width dimensions.The Inlet and outlet water interface that also comprises cooling water, water inlet 3-1,4-1 are positioned at the copper coin back side, long limit, and delivery port 3-2,4-2 are positioned at the copper coin back side, long limit, and water inlet 1-1,2-1 are positioned at the minor face copper coin back side, and delivery port 1-2,2-2 are positioned at the minor face copper coin back side.Utilize the utility model continuous cast mold to cast, the slab cross section after the casting is waist shape, also can be further four angles of crystallizer be designed to the fillet (not shown), makes to water the slab that casts out and do not have corner angle.Jiao Zhu slab the corner angle flange can not occur in course of hot rolling like this, avoided the too fast cooling of slab corner part effectively, long side plate place end face can evenly cool off slowly, and the longitudinal strip black line that makes 1～2 centimeter place of limit portion roll the back generation sticks up the skin defective to be eliminated.
With the steel billet that the utility model crystallizer shown in Figure 2 obtains, the stressing conditions of steel billet in the operation of rolling as shown in Figure 5.As shown in Figure 5, because the minor face two ends of steel billet are circular arc, steel billet is except that being subjected to executing to the power of a direction growing the limit, also be subjected to perpendicular to two outside power of minor face, the short leg of steel billet is that outwards protrude on both sides in rolling, the slag inclusion that has brought with regard to effectively having prevented limit portion from flange occurring is rolled into like this, eliminates the defective of strip edge portion.Limit portion situation during it is rolling as shown in Figure 6.Like this, the longitudinal strip black line of just having avoided steel billet to roll the back generation sticks up the skin defective.
Claims (2)
1. a continuous cast mold comprises two opposed long side plates and two blocks of minor face plates between long side plate, it is characterized in that: described two minor face plate madial walls are circular arc.
2. continuous cast mold as claimed in claim 1 is characterized in that: four angles of crystallizer are fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200674137U CN200998764Y (en) | 2007-02-15 | 2007-02-15 | Continuous casting crystallizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200674137U CN200998764Y (en) | 2007-02-15 | 2007-02-15 | Continuous casting crystallizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200998764Y true CN200998764Y (en) | 2008-01-02 |
Family
ID=39013170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200674137U Expired - Fee Related CN200998764Y (en) | 2007-02-15 | 2007-02-15 | Continuous casting crystallizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200998764Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294455A (en) * | 2010-06-28 | 2011-12-28 | 宝山钢铁股份有限公司 | Non-stopped-pouring high-speed short-edge width regulating method of slab continuous casting machine crystallizer |
| CN103862248A (en) * | 2014-03-19 | 2014-06-18 | 德龙钢铁有限公司 | Method for effectively preventing generation of head and tail surface defects in hot rolling process |
| CN113020556A (en) * | 2021-03-04 | 2021-06-25 | 重庆庭澳冶金新材料有限公司 | Full-oil sealed adjustable crystallizer |
-
2007
- 2007-02-15 CN CNU2007200674137U patent/CN200998764Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294455A (en) * | 2010-06-28 | 2011-12-28 | 宝山钢铁股份有限公司 | Non-stopped-pouring high-speed short-edge width regulating method of slab continuous casting machine crystallizer |
| CN102294455B (en) * | 2010-06-28 | 2013-07-17 | 宝山钢铁股份有限公司 | Non-stopped-pouring high-speed short-edge width regulating method of slab continuous casting machine crystallizer |
| CN103862248A (en) * | 2014-03-19 | 2014-06-18 | 德龙钢铁有限公司 | Method for effectively preventing generation of head and tail surface defects in hot rolling process |
| CN113020556A (en) * | 2021-03-04 | 2021-06-25 | 重庆庭澳冶金新材料有限公司 | Full-oil sealed adjustable crystallizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20160215 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |