CN203140433U - Rolling device and rolled tube core bar thereof - Google Patents
Rolling device and rolled tube core bar thereof Download PDFInfo
- Publication number
- CN203140433U CN203140433U CN2012206181401U CN201220618140U CN203140433U CN 203140433 U CN203140433 U CN 203140433U CN 2012206181401 U CN2012206181401 U CN 2012206181401U CN 201220618140 U CN201220618140 U CN 201220618140U CN 203140433 U CN203140433 U CN 203140433U
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- CN
- China
- Prior art keywords
- tube rolling
- cooling
- rolling plug
- hole
- tube core
- 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 provides a rolled tube core rod which comprises a rolled tube core rod body, wherein a cooling through hole for intaking a cooling material is formed in the rolled tube core rod body; and the cooling material is input into the cooling through hole to reduce the temperature of the rolled tube core rod during the process of rolling a tube, so that the occurrence of quenching on the rolled tube core rod is avoided, the service life of the rolled tube core rod is prolonged, and the acceptability of a finished product is improved.
Description
Technical field
The utility model relates to the metal manufacture field, more particularly, relates to a kind of tube rolling plug, and the utility model also relates to the rolling device with above-mentioned tube rolling plug.
Background technology
Master operation in the hot rolling technology flow process generally has three: perforation, tube rolling and decide tube reducing.As described in Figure 1, the solid pipe after perforation becomes hollow hollow billet 02.Mainly use tube rolling plug 01 and roll 03 in the tube rolling process.Hollow billet 02 is rolled down to accurate scope under the common effect of tube rolling plug 01 and roll 03, thereby realizes subtracting the wall purpose.The quality of tube rolling plug 01 surface quality, state is directly connected to that can production be carried out smoothly, the product precision quality of up to standard and inner surface of tube body quality whether.
Tube rolling carries out in hot environment, and very easily quenches in the process of tube rolling plug from high temperature to low temperature, thereby causes the intensity of tube rolling plug to reduce the lost of life of tube rolling plug.In addition, the tube rolling plug is easier to distortion after quenching takes place, thereby causes the production tube inner surface defective to occur, and the qualification rate of finished product is low.
How designing a kind of tube rolling plug, make the tube rolling plug avoid the generation of high temperature in the process of tube rolling, thereby avoid the tube rolling plug to quench, improve the service life of tube rolling plug and the qualification rate of finished product, is the key issue that those skilled in the art need to be resolved hurrily.
The utility model content
The purpose of this utility model provides a kind of tube rolling plug, makes the tube rolling plug avoid the generation of high temperature in the process of tube rolling, thereby avoids the tube rolling plug to quench, and improves the service life of tube rolling plug and the qualification rate of finished product.
For solving the problems of the technologies described above, the utility model provides a kind of tube rolling plug, comprising: tube rolling plug body offers on the described tube rolling plug body for the cooling through hole that feeds cooling material.
Preferably, described cooling material is liquid nitrogen.
Preferably, the axis conllinear of the axis of described cooling through hole and described tube rolling plug.
Preferably, described cooling through hole is circular cooling through hole.
Preferably, described cooling through hole is large aperture cooling through hole near the part of described tube rolling plug front/rear end.
Preferably, be provided with the trapezoidal cooling through hole of transition between described large aperture cooling through hole and the described cooling through hole.
The utility model also provides a kind of rolling device, this rolling device comprises the tube rolling plug, described tube rolling plug is above-mentioned any described tube rolling plug, because the tube rolling plug of this rolling device has the same effect of above-mentioned tube rolling plug, so this paper repeats no more.
Compared with prior art, offer on the body of the tube rolling plug that the utility model provides for the cooling through hole that feeds cooling material, in the process of tube rolling, in the cooling through hole, import the temperature that cooling material reduces the tube rolling plug, thereby avoid the tube rolling plug to quench, improve the service life of tube rolling plug and the qualification rate of finished product.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of tube rolling in the prior art;
The structural representation of the tube rolling plug that Fig. 2 provides for the utility model embodiment.
The specific embodiment
The utility model discloses a kind of tube rolling plug, offer the cooling through hole on this tube rolling plug, in the process of tube rolling, in this cooling through hole, import the temperature that cooling material reduces the tube rolling device, thereby avoid the tube rolling plug to quench, improve the service life of tube rolling plug and the qualification rate of finished product.
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on embodiment of the present utility model, all other embodiment of those of ordinary skills' gained under the prerequisite of not making creative work belong to the scope that the utility model is protected.
In the utility model one specific embodiment, the tube rolling plug comprises tube rolling plug body 1, offers on this tube rolling plug body for the cooling through hole 11 that feeds cooling material.
In this embodiment, reach the temperature that reduces tube rolling plug body 1 by in the cooling through hole of tube rolling plug body 1, importing cooling material (not marking among the figure), thereby avoid tube rolling plug body 1 to quench.
In the utility model one specific embodiment, above-mentioned cooling material is preferably liquid nitrogen, and the boiling point of liquid nitrogen is low, and gasification easily absorbs a large amount of heat during gasification, thereby reaches the purpose of cooling tube rolling plug body 1.In addition, nitrogen can also protect the rolled parts around tube rolling plug body 1 and the tube rolling plug body 1 not oxidized, thereby has saved the step that is blown into anti-oxidation gas in the rolling device.Nitrogen is nontoxic inert gas, the safety coefficient height.
It will be appreciated by persons skilled in the art that cooling material can also be other cooling substance, such as water, the cooling substance of this paper is not done concrete restriction.
In the utility model one specific embodiment, the axis of cooling through hole 11 and the axis conllinear of tube rolling plug body 1 namely cool off through hole 11 in whole tube rolling plug body 1, cool off tube rolling plug body 1 to greatest extent.
In the utility model one specific embodiment, above-mentioned cooling through hole 11 is manhole, and circular through hole is convenient to the smooth and easy of liquid nitrogen or nitrogen and is flowed, and in addition, the design of manhole can reduce the stress of tube rolling plug body 1 and concentrate.
In the utility model one specific embodiment, above-mentioned manhole is large aperture cooling through hole 111 near the part of tube rolling plug body 1 front/rear end, and the location to tube rolling plug body 1 is convenient to 1 boring of tube rolling plug body the time in the large aperture at two ends.In addition, be provided with trapezoidal hole 112 after the large aperture, trapezoidal hole 112 makes the large aperture be smoothly transitted into the small-bore, avoids stress to concentrate and the intensity of weakening tube rolling plug body 1.
The invention also discloses a kind of rolling device, this device comprises the tube rolling plug, and this tube rolling plug is any one tube rolling plug in above-described embodiment, and above-mentioned tube rolling plug has above-mentioned effect, the rolling device that comprises above-mentioned tube rolling plug also has same effect, so this paper repeats no more.
To the above-mentioned explanation of the disclosed embodiments, be that the art professional can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize in other embodiments not breaking away under the situation of using novel spirit or scope herein.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a tube rolling plug comprises tube rolling plug body, it is characterized in that, offers on the described tube rolling plug body for the cooling through hole that feeds cooling material.
2. tube rolling plug according to claim 1 is characterized in that, described cooling material is liquid nitrogen.
3. tube rolling plug according to claim 1 is characterized in that, the axis conllinear of the axis of described cooling through hole and described tube rolling plug.
4. tube rolling plug according to claim 3 is characterized in that, described cooling through hole is circular cooling through hole.
5. tube rolling plug according to claim 4 is characterized in that, described cooling through hole is large aperture cooling through hole near the part of described tube rolling plug front/rear end.
6. tube rolling plug according to claim 5 is characterized in that, is provided with the trapezoidal cooling through hole of transition between described large aperture cooling through hole and the described cooling through hole.
7. a rolling device comprises the tube rolling plug, it is characterized in that, described tube rolling plug is any described tube rolling plug of aforesaid right requirement 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206181401U CN203140433U (en) | 2012-11-20 | 2012-11-20 | Rolling device and rolled tube core bar thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206181401U CN203140433U (en) | 2012-11-20 | 2012-11-20 | Rolling device and rolled tube core bar thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140433U true CN203140433U (en) | 2013-08-21 |
Family
ID=48967989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206181401U Expired - Fee Related CN203140433U (en) | 2012-11-20 | 2012-11-20 | Rolling device and rolled tube core bar thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203140433U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639204A (en) * | 2013-12-24 | 2014-03-19 | 湖州华祥不锈钢管有限公司 | Core rod for cold rolling technology |
| CN105798064A (en) * | 2016-05-06 | 2016-07-27 | 鑫鹏源智能装备集团有限公司 | Ejecting head and ejecting rod assembly with novel cooling manner |
| CN106391716A (en) * | 2016-11-18 | 2017-02-15 | 广东龙丰精密铜管有限公司 | Hollow mandrel of planetary rolling copper pipe |
-
2012
- 2012-11-20 CN CN2012206181401U patent/CN203140433U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639204A (en) * | 2013-12-24 | 2014-03-19 | 湖州华祥不锈钢管有限公司 | Core rod for cold rolling technology |
| CN105798064A (en) * | 2016-05-06 | 2016-07-27 | 鑫鹏源智能装备集团有限公司 | Ejecting head and ejecting rod assembly with novel cooling manner |
| CN106391716A (en) * | 2016-11-18 | 2017-02-15 | 广东龙丰精密铜管有限公司 | Hollow mandrel of planetary rolling copper pipe |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20161120 |