CN215975883U - Tuyere small sleeve front cap - Google Patents
Tuyere small sleeve front cap Download PDFInfo
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- CN215975883U CN215975883U CN202121112285.XU CN202121112285U CN215975883U CN 215975883 U CN215975883 U CN 215975883U CN 202121112285 U CN202121112285 U CN 202121112285U CN 215975883 U CN215975883 U CN 215975883U
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- front cap
- small sleeve
- sleeve front
- tuyere
- ceramic
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Abstract
The utility model discloses a tuyere small sleeve front cap, wherein a ceramic bushing is embedded on the tuyere small sleeve front cap, and a nickel-based high-temperature alloy layer covers between the tuyere small sleeve front cap and the ceramic bushing; the inner wall of the ceramic bushing is provided with an annular groove; the ceramic bushing comprises an embedded portion, a wrapping portion and an externally-embedded portion, the embedded portion is matched with an inner hole of the small sleeve front cap body, the wrapping portion is matched with the end portion of the small sleeve front cap body, the externally-embedded portion is matched with the outer wall of the small sleeve front cap body, and the embedded portion, the wrapping portion and the externally-embedded portion of the ceramic bushing are integrally formed. The tuyere small sleeve front cap provided by the utility model enhances the erosion resistance and wear resistance of the tuyere front end, and can prevent the falling-off problem of the ceramic lining, thereby prolonging the service life of the tuyere small sleeve.
Description
Technical Field
The utility model relates to the field of air supply of iron-making blast furnaces, in particular to a tuyere small sleeve front cap.
Background
The blast furnace tuyere is a necessary part for blast furnace ironmaking air supply, the tuyere is usually arranged in a furnace wall between a furnace belly and a furnace bottom, the working environment is very severe, and the front end of the tuyere bears the impact and melting loss of liquid molten iron at the high temperature of about 1500 ℃ and materials, slag iron and the like dropping from the upper part of the furnace. The damaged part of the tuyere is mostly at the front end part extending into the furnace, namely a tuyere front cap, and the damaged part mainly comprises slag, iron erosion, abrasion and cracking. Therefore, the key for prolonging the service life of the blast furnace tuyere is to prolong the service time of the tuyere front cap, and the adoption of the high-temperature-resistant, erosion-resistant and wear-resistant ceramic embedded tuyere front cap has important significance for prolonging the service life of the blast furnace tuyere.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides a tuyere small sleeve front cap.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a front cap of a tuyere small sleeve comprises a small sleeve front cap body, a ceramic bushing is embedded on the small sleeve front cap body, and a nickel-based high-temperature alloy layer is arranged between the small sleeve front cap body and the ceramic bushing.
Further, the inner wall of the ceramic lining is provided with an annular groove.
Further, the ceramic bushing comprises an embedded portion, a wrapping portion and an externally-embedded portion, the embedded portion is matched with an inner hole of the small sleeve front cap body, the wrapping portion is matched with the end portion of the small sleeve front cap body, the externally-embedded portion is matched with an outer wall of the small sleeve front cap body, and the embedded portion, the wrapping portion and the externally-embedded portion of the ceramic bushing are integrally formed.
Further, the ceramic lining is made of zirconia ceramic.
Further, the thickness of the nickel-based superalloy layer is 0.1-0.2 mm.
Furthermore, the number of the annular grooves in the inner wall of the ceramic bushing is 8-10.
Furthermore, the distance between the central lines of the adjacent annular grooves is 10-20 mm.
Furthermore, the sectional area of the annular groove on the inner wall of the ceramic bushing is 10-15 mm2。
Furthermore, the length of the embedded part of the ceramic bushing is 40-60 mm.
Furthermore, the length of the external embedding part of the ceramic bushing is 80-120 mm.
Compared with the prior art, the utility model has the following technical effects:
the ceramic lining is embedded on the front cap of the tuyere small sleeve, the inner wall of the ceramic lining is provided with the annular groove, the connection stability of the ceramic lining and the front cap of the tuyere small sleeve is enhanced, the nickel-based high-temperature alloy layer covers between the front cap of the tuyere small sleeve and the ceramic lining, the ceramic lining is not easy to fall off and crack under the high-temperature and high-pressure environment, in addition, the ceramic lining effectively protects the end part of the front cap of the tuyere small sleeve, the erosion resistance and the abrasion resistance of the front cap of the tuyere small sleeve are improved, and therefore the service time of the tuyere small sleeve is prolonged.
Drawings
FIG. 1 is a schematic cross-sectional view of a tuyere small sleeve front cap of the present invention;
in the figure: 1. a small sleeve front cap body; 2. a nickel-based superalloy layer; 3. a ceramic bushing; 4. an embedded portion; 5. a wrapping section; 6. an outer embedding part.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
In the description of the present invention, it is to be understood that the terms "bore", "end", "outer wall", and the like, as indicating an orientation or positional relationship are based on those shown in the drawings for convenience in describing the present invention, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered as limiting the present invention.
Referring to fig. 1, the utility model discloses a tuyere small sleeve front cap, a ceramic bushing 3 is embedded on a small sleeve front cap body 1, the small sleeve front cap body 1 is connected with the ceramic bushing 3 in a melting and embedding manner, a nickel-based high-temperature alloy layer 2 covers between the small sleeve front cap body 1 and the ceramic bushing 3, the thickness of the nickel-based high-temperature alloy layer 2 is 0.1-0.2 mm, and the nickel-based high-temperature alloy layer 2 effectively reduces the interface stress.
The ceramic lining 3 is made of zirconia ceramic, an annular convex groove is arranged on the inner wall of the ceramic lining 3, and the sectional area of the groove is 10-15 mm2The utility model discloses a ceramic lining, annular groove evenly distributed, annular groove quantity is 8 ~ 10, and is adjacent the centerline interval of annular groove is 10 ~ 20mm, and molten copper liquid pours into and solidifies the back in the protruding form recess of 3 inner walls of ceramic lining and is connected with 3 gomphosis of ceramic lining, strengthens the stability that ceramic lining 3 and little cover front cap body 1 are connected, has further prolonged the life of tuyere small cover.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a cap before tuyere small envelope which characterized in that: the ceramic bushing is embedded in the small-sleeve front cap body, and a nickel-based high-temperature alloy layer is arranged between the small-sleeve front cap body and the ceramic bushing; the ceramic bushing comprises an embedded portion, a wrapping portion and an externally-embedded portion, the embedded portion is matched with an inner hole of the small sleeve front cap body, the wrapping portion is matched with the end portion of the small sleeve front cap body, the externally-embedded portion is matched with the outer wall of the small sleeve front cap body, and the embedded portion, the wrapping portion and the externally-embedded portion of the ceramic bushing are integrally formed.
2. The tuyere small sleeve front cap as set forth in claim 1, wherein: and an annular groove is formed in the inner wall of the ceramic bushing.
3. The tuyere small sleeve front cap as set forth in claim 1, wherein: the ceramic lining is made of zirconia ceramic.
4. The tuyere small sleeve front cap as set forth in claim 1, wherein: the thickness of the nickel-based superalloy layer is 0.1-0.2 mm.
5. The tuyere small sleeve front cap as set forth in claim 2, wherein: the number of the annular grooves is 8-10.
6. The tuyere small sleeve front cap as set forth in claim 5, wherein: the distance between the central lines of the adjacent annular grooves is 10-20 mm.
7. The tuyere small sleeve front cap as set forth in claim 2, wherein: the sectional area of the annular groove is 10-15 mm2。
8. The tuyere small sleeve front cap as set forth in claim 1, wherein: the length of the embedded part of the ceramic bushing is 40-60 mm.
9. The tuyere small sleeve front cap as set forth in claim 1, wherein: the length of the external embedding part of the ceramic bushing is 80-120 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112285.XU CN215975883U (en) | 2021-05-24 | 2021-05-24 | Tuyere small sleeve front cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112285.XU CN215975883U (en) | 2021-05-24 | 2021-05-24 | Tuyere small sleeve front cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215975883U true CN215975883U (en) | 2022-03-08 |
Family
ID=80513194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121112285.XU Active CN215975883U (en) | 2021-05-24 | 2021-05-24 | Tuyere small sleeve front cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215975883U (en) |
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2021
- 2021-05-24 CN CN202121112285.XU patent/CN215975883U/en active Active
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