CN210916139U - Steel mouth sleeve for split converter - Google Patents
Steel mouth sleeve for split converter Download PDFInfo
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- CN210916139U CN210916139U CN201922087116.4U CN201922087116U CN210916139U CN 210916139 U CN210916139 U CN 210916139U CN 201922087116 U CN201922087116 U CN 201922087116U CN 210916139 U CN210916139 U CN 210916139U
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Abstract
The utility model discloses a split converter steel mouth sleeve, which is provided with a first sleeve, a second sleeve, a third sleeve, wherein the first sleeve is internally hollow, the bottom of the first sleeve is provided with an internal thread, the external diameter of the internal thread is larger than the diameter of the inner wall of the first sleeve, the upper end and the lower end of the second sleeve are provided with external threads, and the external diameter of the external threads is smaller than the diameter of the outer wall of the second sleeve; the inside internal thread that is equipped with in third sheathed tube upper end, internal thread external diameter is greater than third sleeve pipe inner wall diameter size the utility model has the advantages that: the steel mouth sleeve bricks after transferring and matching are tightly combined, steel leakage is effectively prevented, after the integral pressurizing mode is changed into split pressurizing, the unit pressure of each section is correspondingly increased, and meanwhile, a friction press can be used for pressurizing, and the friction press can reach 1600KN or 2500KN in the fire-resistant industry generally and is far higher than isostatic pressing equipment, so that the conservative estimated unit strength is 3-4 times of that of integral molding.
Description
Technical Field
The utility model relates to the field of ferrous metallurgy, in particular to a steel tapping hole casing brick for a steelmaking converter.
Background
The rotation of the steel-tapping hole sleeve of the converter is a key factor of converter steelmaking, and the steel-tapping hole sleeve continuously works under the high-temperature molten steel scouring, namely, in temperature change, so that the steel-tapping hole sleeve needs to have good high-temperature impact resistance and thermal shock resistance, namely, volume stability, and the steel-tapping hole sleeve brick with the characteristics can meet the requirement of field smelting. The currently used steel tapping hole casing brick is mainly a brick body which is formed by isostatic pressing equipment through one-step pressing, and the product has the characteristics of one-step forming, no joint of the brick body and difficult steel leakage, but the product produced by adopting the process has large stress action area, is not high relative to the strength of the brick body, has different degrees of influence on the service life and is difficult to resist high-frequency scouring, so that the strength of the brick body can be increased by adopting the mode, and the process of difficult steel leakage becomes the development trend of the steel tapping hole casing brick for the converter.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a steel mouth sleeve for split converter.
The specific technical scheme is as follows:
a steel port sleeve for a split converter is provided with a first sleeve, a second sleeve and a third sleeve, wherein the first sleeve is internally hollow, an internal thread is arranged at the bottom of the first sleeve, the external diameter of the internal thread is larger than the diameter of the inner wall of the first sleeve, external threads are arranged at the upper end and the lower end of the second sleeve, and the external diameter of the external threads is smaller than the diameter of the outer wall of the second sleeve; and an internal thread is arranged inside the upper end of the third sleeve, and the external diameter of the internal thread is larger than the internal diameter of the third sleeve.
And external threads at the upper end and the lower end of the second sleeve are in threaded connection with internal threads of the first sleeve and internal threads of the third sleeve.
The utility model has the advantages that: the steel mouth sleeve bricks after transferring and matching are tightly combined, steel leakage is effectively prevented, after the integral pressurizing mode is changed into split pressurizing, the unit pressure of each section is correspondingly increased, and meanwhile, a friction press can be used for pressurizing, and the friction press can reach 1600KN or 2500KN in the fire-resistant industry generally and is far higher than isostatic pressing equipment, so that the conservative estimated unit strength is 3-4 times of that of integral molding.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a steel port sleeve for a split converter in the prior art.
Detailed Description
The present invention is specifically described below with reference to the accompanying drawings, and as shown in fig. 1 and fig. 2, a split converter steel mouth sleeve is provided with a first sleeve 1, a second sleeve 2 and a third sleeve 3, the first sleeve 1 is hollow, an internal thread 101 is arranged at the bottom of the first sleeve, the external diameter of the internal thread is larger than the diameter of the inner wall of the first sleeve, external threads 201 are arranged at the upper and lower ends of the second sleeve 2, and the external diameter of the external threads is smaller than the diameter of the outer wall of the second sleeve; an internal thread 301 is arranged inside the upper end of the third sleeve 3, and the outer diameter of the internal thread 301 is larger than the inner diameter of the third sleeve.
The external threads at the upper end and the lower end of the second sleeve are in threaded connection with the internal threads of the first sleeve and the internal threads of the third sleeve;
the utility model has the advantages that: due to the threaded connection, the breakout phenomenon at the connection part is prevented to the greatest extent, and meanwhile, because the forming process is changed into a split type, the stress area of one-step forming is reduced, so that the pressure on the unit area is increased, and the one-step forming steel outlet casing brick of the brick body is improved. The height of the steel outlet sleeve is generally between 1.8 and 2.6 meters, the outer diameter is generally phi 180mm to 240mm, the steel outlet sleeve is formed at one time by isostatic pressing equipment, the pressure is about 1000-1250KN, the pressure intensity on a unit area is 5000MPa to 7000MPa, after the integral pressurizing mode is changed into split pressurizing, the unit pressure intensity of each section is correspondingly increased, meanwhile, a friction press can be adopted for pressurizing, the friction press can reach 1600KN or 2500KN generally in the fire-resistant industry and is far higher than the isostatic pressing equipment, and therefore the conservative estimated unit strength is 3 to 4 times of that of the integral molding.
Claims (2)
1. The utility model provides a steel notch sleeve pipe for components of a whole that can function independently converter which characterized in that: the sleeve is provided with a first sleeve, a second sleeve and a third sleeve, the first sleeve is arranged in a hollow mode, internal threads are arranged at the bottom of the first sleeve, the external diameter of the internal threads is larger than the diameter of the inner wall of the first sleeve, external threads are arranged at the upper end and the lower end of the second sleeve, and the external diameter of the external threads is smaller than the diameter of the outer wall of the second sleeve; and an internal thread is arranged inside the upper end of the third sleeve, and the external diameter of the internal thread is larger than the internal diameter of the third sleeve.
2. The split converter steel nozzle bushing as set forth in claim 1, wherein: and external threads at the upper end and the lower end of the second sleeve are in threaded connection with internal threads of the first sleeve and internal threads of the third sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922087116.4U CN210916139U (en) | 2019-11-28 | 2019-11-28 | Steel mouth sleeve for split converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922087116.4U CN210916139U (en) | 2019-11-28 | 2019-11-28 | Steel mouth sleeve for split converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210916139U true CN210916139U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922087116.4U Active CN210916139U (en) | 2019-11-28 | 2019-11-28 | Steel mouth sleeve for split converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210916139U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058780A (en) * | 2021-12-01 | 2022-02-18 | 山东钢铁集团日照有限公司 | Device and method for improving tapping reliability of large converter |
-
2019
- 2019-11-28 CN CN201922087116.4U patent/CN210916139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058780A (en) * | 2021-12-01 | 2022-02-18 | 山东钢铁集团日照有限公司 | Device and method for improving tapping reliability of large converter |
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