CN2302071Y - Submersed nozzle for pouring continuous casting slab - Google Patents
Submersed nozzle for pouring continuous casting slab Download PDFInfo
- Publication number
- CN2302071Y CN2302071Y CN 97214834 CN97214834U CN2302071Y CN 2302071 Y CN2302071 Y CN 2302071Y CN 97214834 CN97214834 CN 97214834 CN 97214834 U CN97214834 U CN 97214834U CN 2302071 Y CN2302071 Y CN 2302071Y
- Authority
- CN
- China
- Prior art keywords
- mouth
- river
- water nozzle
- molten steel
- river body
- 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
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a submersed water nozzle for pouring continuous casting thin board blanks, which comprises a main body of the water nozzle. The utility model is characterized in that the cross section of the main body of the water nozzle is flat, and the upper end is provided with an inlet, the cross section of which is circular. The main body of the water nozzle and the inlet are provided with the connection of ash oily transition. The lower end of the main body of the water nozzle is provided with a flow dividing block inwards protruded, and both sides of the flow dividing block are provided with symmetric outlets. The utility model has the advantages of no adhesion, protection of uniform melting slag, good board blank quality, etc.
Description
The utility model belongs to a kind of submersed nozzle that is used to pour into a mould continuous-casting sheet billet.
In the prior art, casting thickness is less than 110mm, when the width ratio is the sheet billet of 10-25, utilize a mouth of a river that molten steel is cast in the crystallizer, be that molten steel flows in the pans earlier, pans are connected to a mouth of a river, molten steel enters in the crystallizer by the mouth of a river again, is cooled to solid-stately in crystallizer gradually, is squeezed into the sheet metal base then.Said process carries out continuously.The mouth of a river of using is cylindric or the square tube shape at present; can only play the effect of flowing out molten steel; utilize existing mouth of a river casting sheet billet to have following shortcoming: because directly insert in the interior molten steel of crystallizer at the mouth of a river; in the casting cycle; the molten steel upper surface does not flow and the part occurs and seethes in the crystallizer, causes covering slag lack of fusion or volume slag phenomenon.Simultaneously upper surface do not flow molten steel part and slag also can the adhesion mouth of a river, crystallizer.Molten steel stream thigh washes away and coagulates the base shell in the crystallizer, makes steel slab surface longitudinal crack occur, even causes the bleed-out accident to take place, and has a strong impact on the quality of steel billet.
The purpose of this utility model provides that molten steel all is in dynamically in a kind of casting cycle, no adhesion, do not have the submersed nozzle that is used to pour into a mould continuous-casting sheet billet that washes away, to guarantee the quality of slab.
Technical solution of the present utility model is: a kind of submersed nozzle that is used to pour into a mould continuous-casting sheet billet, it comprises mouth of a river body, the section that it is characterized in that mouth of a river body is flat-shaped, the upper end is provided with the inlet that section is round shape, be connected for rounding off between mouth of a river body and the inlet, be provided with the branching block to convex in body lower end, the mouth of a river, the branching block both sides are provided with the outlet of symmetry.Body lower end, the above-mentioned mouth of a river is trapezoidal, and described outlet is positioned on the described trapezoidal side edges.The angle α of the side of above-mentioned branching block and mouth of a river body center line is 50 °-80 °.The width of branching block is less than the lateral dimension of mouth of a river chamber body section.
The utility model compared with prior art; because the bottom, the mouth of a river of inserting in the crystallizer is trapezoidal; outlet is positioned at the trapezoidal side edges both sides; be symmetrical arranged; the centre is provided with branching block; when therefore molten steel flows in the crystallizer; all molten steel is in dynamically; overcome the motionless phenomenon of molten steel upper surface in the prior art; make the covering slag fusing evenly, the no adhesion mouth of a river, adhesion crystallizer phenomenon, the molten steel stream in exit does not directly wash away and coagulates the base shell; make the slab flawless of moulding, improve the surface quality and the inherent quality of steel billet.
Below in conjunction with the drawings and the specific embodiments the utility model is further described.
Fig. 1 is the front view of the utility model specific embodiment.
Fig. 2 is a left view shown in Figure 1.
Fig. 3 is an A-A cutaway view shown in Figure 1.
As shown in the figure: 2 is mouth of a river body, and its section is flat-shaped (referring to Fig. 3).Be connected to an inlet 1 in mouth of a river body upper end, the section of inlet 1 is round shape, is connected (referring to Fig. 1, Fig. 2) for rounding off between inlet 1 and the mouth of a river body 2.As shown in Figure 1: body 2 lower ends in the mouth of a river are the isosceles trapezoid shape, and a branching block 4 to convex is being arranged bottom.The both sides that outlet 3 is located at branching block 4 on the promptly trapezoidal side, are symmetrical arranged, and the center line angulation α of the side of branching block 4 and mouth of a river body 2 is 60 ° (between 50 °-80 ° all can).The width B of branching block 4 is less than the lateral dimension C of mouth of a river body 2 inner chamber sections.In order to guarantee the molten steel supply fully, the molten steel flow that body 2 inner chambers in the mouth of a river allow to pass through should in manufacture process, make body 2 inner chamber cross-sectional areas in the mouth of a river get final product greater than the cross-sectional area sum of outlet 3 greater than the flow at bottom two side outlets 3 places.The wall thickness at the mouth of a river is not less than 6mm, to guarantee its strength and stiffness.
Its course of work is: will enter the mouth and 1 join with pans, and before using drying and The pre-heat treatment be carried out in the mouth of a river.Molten steel is in the mouth of a river flows into crystallizer, and insert in the interior molten steel of crystallizer the bottom at the mouth of a river, and distance should be not less than 12.5mm between its wide both sides and the crystallizer, is convenient to covering slag and pushes, and insertion depth is 150-240mm.When molten steel passes through branching block 4 places, be divided into two parts from exporting 3 and flow out, the distribution in flow field is about mouth of a river body center line symmetry, the flow field can be divided into three zones: the one, and fluerics, exit, the mouth of a river, the 2nd, outlet top, mouth of a river torrent vortex region, the 3rd, outlet bottom, mouth of a river unhurried current vortex region.Top torrent vortex region causes the interior molten steel face of crystallizer to be moved to the centre by leptoprosopy, and surperficial molten steel is brought in constant renewal in, and has overcome the motionless phenomenon of upper surface molten steel.Bottom unhurried current vortex region guarantees that each regional molten steel temperature is even in crystallizer, thereby guaranteeing under direct casting operation that molten steel has in the crystallizer satisfies the inviscid flow field distribution that continuous casting requires, and makes whole molten steel be in dynamically no adhesion, the slab flawless improves the quality of products.
Claims (4)
1. submersed nozzle that is used to pour into a mould continuous-casting sheet billet, it comprises mouth of a river body [2], it is characterized in that: the section of mouth of a river body [2] is flat-shaped, the upper end is provided with the inlet [1] that section is round shape, be connected for rounding off between mouth of a river body [2] and the inlet [1], be provided with the branching block [4] to convex in mouth of a river body [2] lower end, branching block [4] both sides are provided with the outlet [3] of symmetry.
2. submersed nozzle according to claim 1 is characterized in that: described mouth of a river body [2] lower end is trapezoidal, and described outlet [3] is positioned on the described trapezoidal side edges.
3. submersed nozzle according to claim 2 is characterized in that: the angle α of the side of described branching block [4] and mouth of a river body [2] center line is 50 °-80 °.
4. according to claim 1 or 2 or 3 described submersed nozzles, it is characterized in that: the width of described branching block [4] is less than the lateral dimension of mouth of a river body [2] inner chamber section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97214834 CN2302071Y (en) | 1997-04-30 | 1997-04-30 | Submersed nozzle for pouring continuous casting slab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97214834 CN2302071Y (en) | 1997-04-30 | 1997-04-30 | Submersed nozzle for pouring continuous casting slab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302071Y true CN2302071Y (en) | 1998-12-30 |
Family
ID=33932169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97214834 Expired - Lifetime CN2302071Y (en) | 1997-04-30 | 1997-04-30 | Submersed nozzle for pouring continuous casting slab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302071Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180068A (en) * | 2010-10-20 | 2013-06-26 | 维苏维尤斯集团有限公司 | Tube for pouring liquid metal, assembly of a tube and a metal frame and metal frame |
-
1997
- 1997-04-30 CN CN 97214834 patent/CN2302071Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103180068A (en) * | 2010-10-20 | 2013-06-26 | 维苏维尤斯集团有限公司 | Tube for pouring liquid metal, assembly of a tube and a metal frame and metal frame |
| CN103180068B (en) * | 2010-10-20 | 2015-04-22 | 维苏维尤斯集团有限公司 | Tube for pouring liquid metal, assembly of a tube and a metal frame and metal frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: DALIAN HEAVY INDUSTRY CRANE GROUP CO., LTD. Free format text: FORMER NAME OR ADDRESS: DACHONG GROUP CORP. (DALIAN) |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Huarui Co., Ltd., Dalian Patentee before: Dazhong Group Corp., Dalian |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |