CN215543709U - Perforating plug for seamless steel pipe production - Google Patents
Perforating plug for seamless steel pipe production Download PDFInfo
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- CN215543709U CN215543709U CN202120972646.1U CN202120972646U CN215543709U CN 215543709 U CN215543709 U CN 215543709U CN 202120972646 U CN202120972646 U CN 202120972646U CN 215543709 U CN215543709 U CN 215543709U
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Abstract
The utility model discloses a perforating plug for producing a seamless steel tube, which comprises a plug body, wherein the plug body comprises a nose part, a conical part and a cylindrical part, and the front end and the rear end of the conical part are respectively connected with the nose part and the cylindrical part; the rear end of cylindricality portion is provided with the mounting hole, be provided with in-connection screw thread on the inner wall of mounting hole, be provided with the cooling chamber that is "bullet" shape between mounting hole and the nasal part, the cooling chamber extends to the middle part of toper portion by the middle part of cylindricality portion, and cooling chamber and mounting hole intercommunication, the internal diameter in cooling chamber is less than the internal diameter of mounting hole, the cooling intracavity is provided with heat conduction cover, heat conduction cover's outer wall closely attaches with the inner wall in cooling chamber, be provided with the convex key on heat conduction cover's the rear end outer wall, correspond with the convex key position on the inner wall of cooling chamber rear end and be provided with the keyway, the inseparable block of convex key is in the keyway, the interval is provided with radiating fin on heat conduction cover's the inner wall. The utility model aims to solve the problems of low cooling efficiency, poor cooling effect, short service life and the like of the conventional piercing plug.
Description
Technical Field
The utility model relates to the technical field of seamless steel pipe processing, in particular to a perforating plug for producing a seamless steel pipe.
Background
The seamless steel pipe is formed by punching a whole round steel, no welding seam exists on the surface of the steel pipe, a punching top is a key tool in the production of the seamless steel pipe, the quality of the punching top is good, the length of the service life of the punching top directly influences the yield and quality of the steel pipe and the economic benefit of enterprises, the temperature of the punching top is as high as about 1000 ℃ in the hot rolling production of the seamless steel pipe, wherein the temperature of a nose part is as high as 1300 ℃, during pipe penetrating, the punching top not only bears strong axial pressure and radial pressure, but also overcomes strong deformation friction force generated between the punching top and the inner wall of a capillary pipe, and the punching top needs to be cooled by water every time of pipe penetrating, so that the phenomena of serious nose collapse, steel sticking, cracking and the like of the punching top under the comprehensive action of mechanical fatigue and thermal fatigue are prevented.
However, the conventional piercing plug still has disadvantages in cooling, and the piercing plug has low cooling efficiency and poor cooling effect, so that the piercing plug still suffers from the above-mentioned failure phenomena such as collapse, sticking, cracking and the like during operation, and has a short service life.
Aiming at the technical problems, the utility model discloses a piercing plug for producing seamless steel pipes, which has the advantages of improving the cooling efficiency and the cooling effect, prolonging the service life and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a perforating plug for producing seamless steel tubes, so as to solve the technical problems that the perforating plug in the prior art still has defects in the cooling aspect, the perforating plug is low in cooling efficiency and poor in cooling effect, so that the perforating plug still has the failure phenomena of nose collapse, steel sticking, cracking and the like during working, the service life is short and the like.
The utility model is realized by the following technical scheme: the utility model discloses a perforating plug for producing a seamless steel tube, which comprises a plug body, wherein the plug body is in a bullet shape and comprises a nose part, a conical part and a cylindrical part, and the front end and the rear end of the conical part are respectively connected with the nose part and the cylindrical part; the rear end of cylindricality portion is provided with the mounting hole, be provided with in-connection screw thread on the inner wall of mounting hole, be provided with the cooling chamber that is "bullet" shape between mounting hole and the nasal part, the cooling chamber extends to the middle part of toper portion by the middle part of cylindricality portion, and cooling chamber and mounting hole intercommunication, the internal diameter in cooling chamber is less than the internal diameter of mounting hole, the cooling intracavity is provided with heat conduction cover, heat conduction cover's outer wall closely attaches with the inner wall in cooling chamber, be provided with the convex key on heat conduction cover's the rear end outer wall, correspond with the convex key position on the inner wall of cooling chamber rear end and be provided with the keyway, the inseparable block of convex key is in the keyway, the interval is provided with radiating fin on heat conduction cover's the inner wall.
Preferably, the nose part is detachably connected with the conical part in order to prolong the service life of the perforating plug and reduce the cost. Because the perforation during operation, the nasal part of top is heated and the pressure effect that receives is the most serious, and consequently, the nasal part also is the most fragile part of top, and the nasal part can be dismantled with the toper portion and be connected the back, is convenient for change the nasal part when the nasal part damages, need not to change whole perforation top body, has reduced manufacturing cost.
Preferably, in order to facilitate the installation and the disassembly of the nose part, the rear end of the nose part is provided with a stud, the front end of the conical part is provided with a screw hole corresponding to the stud, and the stud is fixed in the screw hole in a threaded manner.
Preferably, in order to improve the strength and the high-temperature resistance of the piercing plug, the outer walls of the nose part, the conical part and the cylindrical part are respectively provided with a cobalt-based alloy coating, and the cobalt-based alloy has high strength, good wear resistance and excellent high-temperature resistance.
Preferably, in order to improve the strength and the high temperature resistance of the piercing plug, and in order to improve the cooling efficiency and the cooling effect of the piercing plug, the heat-conducting sleeve is made of a tungsten copper material.
The utility model has the following advantages: according to the utility model, the heat conduction sleeve is arranged in the cooling cavity, the radiating fins are arranged on the inner wall of the heat conduction sleeve at intervals, the heat conduction sleeve and the radiating fins are both made of tungsten copper material, the tungsten copper has excellent heat conduction performance and high temperature resistance, so that the heat conduction sleeve and the radiating fins can well conduct heat generated by the operation of the perforating top head, the rear end of the perforating top head is connected with the ejector rod during pipe perforating, the water pipe is arranged in the middle of the ejector rod, cooling water can enter the cooling cavity from the water pipe to be in contact with the outer surfaces of the heat conduction sleeve and the radiating fins, the contact area is increased, therefore, the cooling water can more quickly and efficiently take away the heat and then is discharged from the water outlet in the middle of the ejector rod, the cooling efficiency and the cooling effect of the perforating top head are improved, the phenomena of nose collapse, steel sticking, cracking and the like caused by thermal fatigue of the perforating top head are prevented, and meanwhile, the nose part, the heat conduction sleeve and the radiating fins are prevented from failing due to thermal fatigue, All be provided with cobalt base alloy cladding material on the outer wall of toper portion and cylindricality portion, cobalt base alloy intensity is high, the wearability is good, has excellent high temperature resistance simultaneously, has prolonged the life of perforation top, and the nasal part can be dismantled with the toper portion and be connected to, be convenient for change the nasal part, reduced manufacturing cost.
Drawings
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view of the conical portion and the cylindrical portion;
fig. 3 is a schematic view of the structure of the lift pin.
In the figure: 1. a plug body; 11. a nose portion; 111. a stud; 12. a tapered portion; 121. a screw hole; 13. a cylindrical portion; 131. mounting holes; 2. a cobalt-based alloy plating layer; 3. an internal connecting thread; 4. a cooling chamber; 41. a keyway; 5. a heat conducting sleeve; 51. a convex key; 52. a heat dissipating fin; 6. a top rod; 61. a water pipe; 62. a water outlet hole; 7. external connecting threads; 8. connecting columns.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
Example 1
The principle of the utility model is as follows: in the utility model, the cooling cavity 4 is internally provided with the heat conducting sleeve 5, the inner wall of the heat conducting sleeve 5 is provided with the heat radiating fins 52 at intervals, the heat conducting sleeve 5 and the heat radiating fins 52 are both made of tungsten copper material, the tungsten copper has excellent heat conducting performance and high temperature resistance, so that the heat conducting sleeve 5 and the heat radiating fins 52 can well conduct heat generated by the operation of the perforating top head, when the tube is perforated, the rear end of the perforating top head is connected with the connecting column 8 which is arranged at the front end of the ejector rod 6 and is provided with the external connecting thread 7, the structure of the ejector rod 6 is shown in figure 3, the middle part of the ejector rod 6 is provided with the water tube 61, the end part of the water tube 61 extends into the cooling cavity 4, cooling water can enter the cooling cavity 4 from the water tube 61 to be contacted with the outer surfaces of the heat conducting sleeve 5 and the heat radiating fins 52, the contact area is increased, therefore, the cooling water can more quickly and efficiently take away the heat and then is discharged from the water outlet hole 62 in the middle part of the ejector rod 6, the cooling efficiency and the cooling effect of perforation top have been improved, the perforation top has been prevented to appear collapsing the nose because of thermal fatigue, glue the steel, inefficacy phenomena such as fracture, and simultaneously, nasal part 11, all be provided with cobalt base alloy cladding material 2 on the outer wall of toper portion 12 and cylindricality portion 13, cobalt base alloy intensity is high, the wearability is good, excellent high temperature resistance has simultaneously, the life of perforation top has been prolonged, nasal part 11 can be dismantled with toper portion 12 and be connected, thereby, be convenient for change nasal part 11, and production cost is reduced.
Claims (5)
1. The perforating plug for producing the seamless steel tube is characterized by comprising a plug body, wherein the plug body is in a bullet shape, the plug body comprises a nose part, a conical part and a cylindrical part, and the front end and the rear end of the conical part are respectively connected with the nose part and the cylindrical part;
the rear end of cylindricality portion is provided with the mounting hole, be provided with the in-connection screw thread on the inner wall of mounting hole, the mounting hole with be provided with the cooling chamber that is "bullet" shape between the nasal part, the cooling chamber by the middle part of cylindricality portion extends to the middle part of toper portion, and the cooling chamber with the mounting hole intercommunication, the internal diameter in cooling chamber is less than the internal diameter of mounting hole, the cooling intracavity is provided with heat conduction cover, heat conduction cover's outer wall with the inner wall in cooling chamber closely attaches, be provided with the convex key on heat conduction cover's the rear end outer wall, on the inner wall of cooling chamber rear end with the convex key position correspondence is provided with the keyway, the inseparable block of convex key is in the keyway, the interval is provided with radiating fin on heat conduction cover's the inner wall.
2. The piercing plug for seamless steel tube production as claimed in claim 1, wherein the nose portion is detachably connected to the tapered portion.
3. The piercing plug for producing the seamless steel tube as claimed in claim 2, wherein a stud is provided at the rear end of the nose portion, a screw hole is provided at the front end of the tapered portion corresponding to the stud, and the stud is fixed in the screw hole by screwing.
4. The piercing plug for producing a seamless steel pipe as claimed in claim 1, wherein the outer walls of the nose portion, the tapered portion and the cylindrical portion are provided with a cobalt-based alloy plating.
5. The piercing plug for producing seamless steel tubes as claimed in claim 1, wherein the heat conducting sleeve and the heat dissipating fins are made of tungsten-copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972646.1U CN215543709U (en) | 2021-05-08 | 2021-05-08 | Perforating plug for seamless steel pipe production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120972646.1U CN215543709U (en) | 2021-05-08 | 2021-05-08 | Perforating plug for seamless steel pipe production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215543709U true CN215543709U (en) | 2022-01-18 |
Family
ID=79859310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120972646.1U Active CN215543709U (en) | 2021-05-08 | 2021-05-08 | Perforating plug for seamless steel pipe production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215543709U (en) |
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2021
- 2021-05-08 CN CN202120972646.1U patent/CN215543709U/en active Active
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