CN201179560Y - Bottom pouring brick - Google Patents
Bottom pouring brick Download PDFInfo
- Publication number
- CN201179560Y CN201179560Y CNU2007200417833U CN200720041783U CN201179560Y CN 201179560 Y CN201179560 Y CN 201179560Y CN U2007200417833 U CNU2007200417833 U CN U2007200417833U CN 200720041783 U CN200720041783 U CN 200720041783U CN 201179560 Y CN201179560 Y CN 201179560Y
- Authority
- CN
- China
- Prior art keywords
- brick
- steel
- bottom pouring
- brick body
- casting
- 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 - Fee Related
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model relates to a bottom casting brick for casting steel sensitive to impurities. The bottom casting brick comprises a hollow brick body and a layer of paint coated on the inner wall of the hollow brick body. The paint is magnesium paint. The bottom casting brick can prevent liquid steel from contacting a clay fire resistant material inside the brick body so as to prevent aluminium sesquioxide from being washed in to the liquid steel during the casting operation and resulting in increased content of aluminium sesquioxide of finished steel. Compared with a high-magnesium brick with magnesia as a main element of the brick body, the bottom casting brick is much lower in cost.
Description
Technical field
The utility model relates to a kind of steel grade cast bottom pouring brick, and is particularly a kind of to the responsive cast bottom pouring brick of just having planted of field trash.
Background technology
Be to improve the responsive production efficiency of just having planted of field trash, in the steel grade cast, require in the ingot blank of steel the field trash total amount few, big or small rank is low, and field trash must be yielding, otherwise can cause the steel wire fracture in the operation of rolling of steel.
Existing bottom pouring brick can be for being rich in the high alumina matter bottom pouring brick of alundum (Al, or for being rich in the magnesia bottom pouring brick of magnesian height.Wherein, during molten steel, alundum (Al can be entered in the molten steel by the molten steel scouring melting loss in contact for the former, causes into the trickle plastochondria that steel behind the ingot are mingled with the part refractory material, and these nonmetal inclusions are often with α-Al
2O
3, harder and on-deformable mineral form such as mullite, periclase, forsterite exists, and can have a strong impact on the quality of steel in the rolling or pulling process of steel.If adopt and be rich in the magnesia bottom pouring brick of magnesian height, then cost is very high.
Summary of the invention
The purpose of this utility model is to provide a kind of steel grade cast bottom pouring brick to the field trash sensitivity.
Technical solution adopted in the utility model is:
A kind of bottom pouring brick, this bottom pouring brick comprise a hollow brick body and a coating that is coated on this hollow brick body inwall, and described coating is magnesia coating.
Described magnesia coating thickness is 1～2 millimeter.
A kind of bottom pouring brick of implementing according to the utility model can stop molten steel contact with fireclay refractory in the brick body, prevents when casting manipulations, because of the alundum (Al material is washed away to molten steel, causes the interior alundum (Al impurity increase of finished steel.With compare as the high magnesia bottom pouring brick of brick body main component with magnesia, cost reduces greatly.
Description of drawings
Accompanying drawing 1 is a structural representation of the present utility model.
Wherein: 1, brick body; 2, coating.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described.
As shown in Figure 1, the bottom pouring brick of implementing according to the utility model comprises a hollow brick body 1 and a coating 2 that is coated on this hollow brick body 1 inwall.
Embodiment 1:
The preparation of magnesia coating 2: 90g magnesium oxide powder, 10g SiO 2 powder, 1g water, 0.5g dispersant is even, be mixed with magnesia coating.Wherein, magnesia need be crushed to granularity greater than 200 orders.
Inwall at hollow brick body 1 applies described magnesia coating 2, and coating layer thickness is 1 millimeter.
Embodiment 2:
The difference of present embodiment and embodiment 1 is: the prescription of described magnesia coating is: 95g magnesia, 5g silica, 1g water, 0.5g dispersant; The thickness of described coating is 1.5 millimeters.
Claims (2)
1, a kind of bottom pouring brick is characterized in that: this bottom pouring brick comprises hollow brick body (1) and is coated in a coating (2) on this hollow brick body (1) inwall that described coating (2) is magnesia coating (2).
2, a kind of bottom pouring brick according to claim 1 is characterized in that: described magnesia coating (2) thickness is 1～2 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200417833U CN201179560Y (en) | 2007-11-29 | 2007-11-29 | Bottom pouring brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200417833U CN201179560Y (en) | 2007-11-29 | 2007-11-29 | Bottom pouring brick |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201179560Y true CN201179560Y (en) | 2009-01-14 |
Family
ID=40249064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200417833U Expired - Fee Related CN201179560Y (en) | 2007-11-29 | 2007-11-29 | Bottom pouring brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201179560Y (en) |
-
2007
- 2007-11-29 CN CNU2007200417833U patent/CN201179560Y/en not_active Expired - Fee Related
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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: 20090114 Termination date: 20161129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |