CN202984275U - Steel tube hot piercing plug - Google Patents
Steel tube hot piercing plug Download PDFInfo
- Publication number
- CN202984275U CN202984275U CN 201220595330 CN201220595330U CN202984275U CN 202984275 U CN202984275 U CN 202984275U CN 201220595330 CN201220595330 CN 201220595330 CN 201220595330 U CN201220595330 U CN 201220595330U CN 202984275 U CN202984275 U CN 202984275U
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- China
- Prior art keywords
- steel tube
- utility
- cone section
- model
- tube hot
- 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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Abstract
The utility model relates to a steel tube hot piercing plug comprising a body. A cavity is reserved in the body, the body is a cone, each of two waist lines of the cone comprises an inlet cone section, a working section and a tail cone section, and an included angle alpha between the tail cone section and a horizontal line ranges from 3.15 degrees to 3.25 degrees. Since the steel tube hot piercing plug is set with a taper angle, process requirements of thickness reducing, diameter enlarging and extending are met during piercing; quality of the inner surfaces of billets is greatly improved when the billets are pierced, so that problems of pocking marks, steel pits, dimensional accuracy and uneven thickness are avoided.
Description
Technical field
The utility model relates to a kind of perforated member of seamless steel pipe, relates in particular to a kind of hot perforation top head of steel pipe.
Background technology
At present, in the smelter seamless steel pipe production, punch is the capital equipment of seamless steel tube production, in the process of rolling seamless steel pipe or high temperature alloy pipes, at first be to utilize the top on punch, the round steel billet that is heated to set point of temperature to be carried out drilling/rolling to become seamless steel pipe, because the steel billet gapless that comes directly towards with after heating contacts, all the time be under the occasion of high temperature, high capacity, very easily produce wearing and tearing and corrosion, and its interior table of the steel billet after perforation is of poor quality, pit and pit often appear, the situation that dimensional accuracy and wall unevenness are even.
The utility model content
The applicant provides another kind of hot perforation top head of steel pipe for above-mentioned existing issue, thereby.
The technical scheme that the utility model adopts is as follows:
A kind of hot perforation top head of steel pipe comprises a matrix, has inner chamber in matrix, and matrix is bullet, bullet two stringcourses by approach cone section, active section, and afterbody cone section connect and compose, the angle α between afterbody cone section and horizontal line be 3 ° 15 '～3 ° 25 '.
The beneficial effects of the utility model are as follows:
The utility model is by after arranging a cone angle, satisfy the technological requirement that subtracts wall, hole enlargement and extension of perforation, its inner surface quality of the steel billet after perforation improves greatly, has avoided occurring pit, pit and dimensional accuracy in the past, the situation that wall unevenness is even, the steel billet wall unevenness is even by original
10% reduces to
5%, and greatly improved service life of the present utility model.
Description of drawings
Fig. 1 is structural representation of the present utility model.
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 utility model comprises a matrix 1, has inner chamber 101 in matrix 1, and matrix 1 is bullet, bullet two stringcourses by approach cone section 104, active section 103, and afterbody cone section 102 connect and compose, the angle α between afterbody cone section 102 and horizontal line be 3 ° 15 '～3 ° 25 '.
The utility model is by after arranging a cone angle, satisfy the technological requirement that subtracts wall, hole enlargement and extension of perforation, its inner surface quality of the steel billet after perforation improves greatly, has avoided occurring pit, pit and dimensional accuracy in the past, the situation that wall unevenness is even, the steel billet wall unevenness is even by original
10% reduces to
5%, and greatly improved service life of the present utility model.
Above description is to explanation of the present utility model, is not the restriction to utility model, and the utility model limited range is referring to claim, in the situation that without prejudice to basic structure of the present utility model, the utility model can be done any type of modification.
Claims (1)
1. hot perforation top head of steel pipe, comprise a matrix (1), have inner chamber (101) in described matrix (1), it is characterized in that: described matrix (1) is bullet, described bullet two stringcourses by approach cone section (104), active section (103), and afterbody cone section (102) connect and compose, the angle α between described afterbody cone section (102) and horizontal line be 3 ° 15 '～3 ° 25 '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595330 CN202984275U (en) | 2012-11-13 | 2012-11-13 | Steel tube hot piercing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595330 CN202984275U (en) | 2012-11-13 | 2012-11-13 | Steel tube hot piercing plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202984275U true CN202984275U (en) | 2013-06-12 |
Family
ID=48555498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595330 Expired - Fee Related CN202984275U (en) | 2012-11-13 | 2012-11-13 | Steel tube hot piercing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202984275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116137A (en) * | 2019-06-13 | 2019-08-13 | 南通市嘉业机械制造有限公司 | A kind of piercing plug for seamless steel tubes |
-
2012
- 2012-11-13 CN CN 201220595330 patent/CN202984275U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110116137A (en) * | 2019-06-13 | 2019-08-13 | 南通市嘉业机械制造有限公司 | A kind of piercing plug for seamless steel tubes |
| CN110116137B (en) * | 2019-06-13 | 2024-03-22 | 南通市嘉业机械制造有限公司 | Seamless steel tube perforating plug |
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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: 20130612 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |