CN204747199U - Punch top - Google Patents
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- Publication number
- CN204747199U CN204747199U CN201520480986.7U CN201520480986U CN204747199U CN 204747199 U CN204747199 U CN 204747199U CN 201520480986 U CN201520480986 U CN 201520480986U CN 204747199 U CN204747199 U CN 204747199U
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- CN
- China
- Prior art keywords
- connecting portion
- pointed nose
- transition part
- cavity
- passage
- Prior art date
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Abstract
The utility model discloses a punch top, including the top body, this internal cavity that is equipped with of top, the top body includes tip portion, be equipped with the transition portion with tip portion's rounding off and thickness taper attenuation in the tip portion, transition portion keeps away from the connecting portion that one end was equipped with with the adapter sleeve links to each other and thickness is invariable of tip portion, connecting portion are connected with transition portion rounding off, just connecting portion and transition portion all correspond the setting with the cavity, tip portion transition portion with connecting portion establish as an organic wholely and the diameter crescent. Adopt the punch top of this structure, under the condition of guaranteeing top body self light in weight, solved the fracture problem, improved cooling effect and life, reduced rolling cost with the frequency of changing punch top and the intensity of labour when changing, improved work efficiency, simultaneously, effectively reduced punch top and gone wrong, and influenced the body quality and the problem of quality accident appears.
Description
Technical field
The utility model relates to a kind of piercing mandrel plug.
Background technology
Present stage, in the production process of hot rolled seamless steel tube, piercing mandrel plug is important rolling tool.At present, conventional piercing mandrel plug mainly contains two kinds of versions, a kind of is the top body 1 (see Fig. 1) of solid construction, and the another kind of hollow water-cooled top body 1 for being provided with cavity 11 is evenly arrange (see Fig. 2) with the wall thickness of cavity 11 correspondence position.In actual use, the first piercing mandrel plug cooling effect is bad, easy steel bonding, and then cause quality accident (that is: the body of hot rolled seamless steel tube is of poor quality), and service life is low, own wt weight, cost is high, the first is compared, good cooling results in the second top, but easily ftractures at perforation active section, body quality problems are caused to control difficulty large, equally, service life is low, and use cost is high, and frequently change top, then can affect operating efficiency greatly.
Utility model content
The purpose of this utility model is to provide a kind of piercing mandrel plug, reaches the object improving low and body quality in service life.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of piercing mandrel plug, comprise top body, cavity is provided with in the body of described top, described top body comprises pointed nose, described pointed nose is provided with described pointed nose rounding off and the thinning gradually transition part of thickness, described transition part is provided with away from one end of described pointed nose and is connected and the connecting portion of constant thickness with adapter sleeve, described connecting portion is connected with described transition part rounding off, and described connecting portion and described transition part are all corresponding with described cavity arranges;
Described pointed nose, described transition part and described connecting portion are set to one and diameter increases gradually.
Improve as one, described pointed nose is provided with the first passage with described cavity connects, described first passage is provided with away from the described pointed nose of described cavity one end the second channel be communicated with described first passage, and the diameter of described second channel is less than the diameter of described first passage.
Owing to have employed technique scheme, the beneficial effect of a kind of piercing mandrel plug provided by the utility model is as follows:
Because pointed nose is provided with pointed nose rounding off and the thinning gradually transition part of thickness, thus realizing transition part, be connected the wall thickness of one end with pointed nose thicker, enhances the labour intensity of top body, compared with tradition, avoid the problem of cracking; Be connected and the connecting portion of constant thickness with adapter sleeve because transition part is provided with away from one end of pointed nose, thus after the current for cooling enter cavity, the thinning gradually transition part of the connecting portion thinner by wall thickness and thickness carries out heat trnasfer fast, realize the top quick cooling of body and good cooling results, thus avoid piercing mandrel plug steel bonding phenomenon.
In sum, adopt the piercing mandrel plug of this structure, ensureing under the condition that top body own wt is light, not only solve problem of Cracking, and improve cooling effect, thus improve service life, and then reduce rolling cost, greatly reduce the labour intensity when frequency and replacing of changing piercing mandrel plug, improve operating efficiency; Meanwhile, effectively reduce piercing mandrel plug go wrong and affect body quality and the problem occurring quality accident.
Because pointed nose is provided with and the first passage of cavity connects and second channel, thus by the first passage that is interconnected and second channel, be convenient to current enter and cool pointed nose, further ensure the cooling effect of this top body, for ensureing that body quality is laid a good foundation; Diameter due to second channel is less than the diameter of first passage, thus under the prerequisite ensureing cooling effect, does not affect the structural strength of pointed nose.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing piercing mandrel plug embodiment one;
Fig. 2 is the structural representation of existing piercing mandrel plug embodiment two;
Fig. 3 is structural representation of the present utility model;
In figure, 1-comes directly towards body; 11-cavity; 12-pointed nose; 13-transition part; 14-connecting portion; 15-first passage; 16-second channel; 2-adapter sleeve.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As Fig. 3 jointly shown in, a kind of piercing mandrel plug, comprise top body 1, cavity 11 is provided with in this top body 1, this top body 1 comprises pointed nose 12, this pointed nose 12 is provided with pointed nose 12 rounding off and the thinning gradually transition part 13 of thickness, this transition part 13 is provided with away from one end of pointed nose 12 and is connected and the connecting portion 14 (that is: the thickness of connecting portion 14 is equal with the thickness of the thinner one end of transition part 13 wall thickness) of constant thickness with adapter sleeve 2, in the present case, be connected with the reliable of connecting portion 14 to realize adapter sleeve 2, the wall thickness of all the other positions of connecting portion 14 is less than with connecting portion 14 wall thickness of adapter sleeve 2 correspondence position, and the end of adapter sleeve 2 leans on connecting portion 14, this adapter sleeve 2 welds together with connecting portion 14, thus the working strength of top body 1 can be guaranteed, this connecting portion 14 is connected with transition part 13 rounding off, and connecting portion 14 and transition part 13 are all corresponding with cavity 11 arranges, this pointed nose 12, transition part 13 and connecting portion 14 are set to one and diameter increases gradually.
This pointed nose 12 is provided with the first passage 15 be communicated with cavity 11, this first passage 15 is provided with away from the pointed nose 12 of cavity 11 one end the second channel 16 be communicated with first passage 15, thus by the first passage 15 that is interconnected and second channel 16, be convenient to current enter and cool pointed nose 12, further ensure the cooling effect of this top body 1, for ensureing that body quality is laid a good foundation; The diameter of this second channel 16 is less than the diameter of first passage 15, thus under the prerequisite ensureing cooling effect, does not affect the structural strength of pointed nose 12.
In actual applications, because pointed nose 12 is provided with pointed nose 12 rounding off and the thinning gradually transition part 13 of thickness, thus it is thicker to realize the wall thickness that transition part 13 and pointed nose 12 be connected one end, enhances the labour intensity of top body 1, compared with tradition, avoid the problem of cracking; Be connected and the connecting portion 14 of constant thickness with adapter sleeve 2 because transition part 13 is provided with away from one end of pointed nose 12, thus after the current for cooling enter cavity, the connecting portion 14 thinner by wall thickness and the thinning gradually transition part 13 of thickness carry out heat trnasfer fast, realize the top quick cooling of body 1 and good cooling results, thus avoid piercing mandrel plug steel bonding phenomenon.
In sum, adopt the piercing mandrel plug of this structure, ensureing under the condition that top body 1 own wt is light, not only solve problem of Cracking, and improve cooling effect, thus improve service life, and then reduce rolling cost, greatly reduce the labour intensity when frequency and replacing of changing piercing mandrel plug, improve operating efficiency; Meanwhile, effectively reduce piercing mandrel plug go wrong and affect body quality and the problem occurring quality accident.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. a piercing mandrel plug, comprise top body, it is characterized in that, cavity is provided with in the body of described top, described top body comprises pointed nose, and described pointed nose is provided with described pointed nose rounding off and the thinning gradually transition part of thickness, and described transition part is provided with away from one end of described pointed nose and is connected and the connecting portion of constant thickness with adapter sleeve, described connecting portion is connected with described transition part rounding off, and described connecting portion and described transition part are all corresponding with described cavity arranges;
Described pointed nose, described transition part and described connecting portion are set to one and diameter increases gradually.
2. a kind of piercing mandrel plug according to claim 1, it is characterized in that, described pointed nose is provided with the first passage with described cavity connects, described first passage is provided with away from the described pointed nose of described cavity one end the second channel be communicated with described first passage, and the diameter of described second channel is less than the diameter of described first passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520480986.7U CN204747199U (en) | 2015-07-06 | 2015-07-06 | Punch top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520480986.7U CN204747199U (en) | 2015-07-06 | 2015-07-06 | Punch top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204747199U true CN204747199U (en) | 2015-11-11 |
Family
ID=54461955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520480986.7U Active CN204747199U (en) | 2015-07-06 | 2015-07-06 | Punch top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204747199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482652A (en) * | 2018-11-24 | 2019-03-19 | 泰州市华诚钨钼制品有限公司 | Diameter hollow molybdenum alloy top head and its manufacturing process |
-
2015
- 2015-07-06 CN CN201520480986.7U patent/CN204747199U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109482652A (en) * | 2018-11-24 | 2019-03-19 | 泰州市华诚钨钼制品有限公司 | Diameter hollow molybdenum alloy top head and its manufacturing process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |