CN108723090A - Plug processing unit (plant) and system of processing - Google Patents
Plug processing unit (plant) and system of processing Download PDFInfo
- Publication number
- CN108723090A CN108723090A CN201810765563.8A CN201810765563A CN108723090A CN 108723090 A CN108723090 A CN 108723090A CN 201810765563 A CN201810765563 A CN 201810765563A CN 108723090 A CN108723090 A CN 108723090A
- Authority
- CN
- China
- Prior art keywords
- plug
- plant
- processing unit
- jet pipe
- attemperator
- 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.)
- Pending
Links
- 238000001816 cooling Methods 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 230000001050 lubricating effect Effects 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 20
- 238000004064 recycling Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000012797 qualification Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000000889 atomisation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/04—Cooling or lubricating mandrels during operation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gas Burners (AREA)
Abstract
Plug processing unit (plant) provided by the invention and system of processing, are related to seamless steel pipe technical field.The plug processing unit (plant) includes sequentially connected cooling device and attemperator；The cooling device includes shell and the jet pipe that is set in shell, and plug is located at the jet pipe center, and air-water mixture is provided in the jet pipe；The attemperator includes furnace body and burner, and the plug is provided with the burner on the furnace body, flue gas is connected in the burner.Plug first passes through cooling device and is cooled down in plug processing unit (plant) provided by the invention, is uniformly heated by attemperator after cooling uniformly so that the entire temperature of plug is uniform；After cooling device and attemperator, keep plug temperature uniform, improve the qualification rate of product and reduces production cost.
Description
Technical field
The present invention relates to seamless steel pipe technical fields, more particularly, to a kind of plug processing unit (plant) and system of processing.
Background technology
Plug is used in pressing direction in green compact or the component of the mold of sintered body internal shaping contoured surface, predominantly seamless steel
The interior mold of pipe.With the raising for producing product requirement to Push bench pipe mill seamless pipe, the requirement of counterweight point deformation tool and mould plug
Also increasingly harsher.Plug temperature uniformity directly influences product quality.
Existing plug will produce even situation uneven in temperature after use, and non-uniform temperature can influence product quality, make
It is reduced at product qualification rate, wastes a large amount of cost.
Existing plug in use for some time, causes non-uniform temperature, influences product qualification rate and cost is higher.
Invention content
It is an object of the present invention to provide a kind of plug processing unit (plant)s, to solve existing plug when using one section
Between after, cause non-uniform temperature, influence product qualification rate and the higher technical problem of cost.
It is another object of the present invention to provide the plug processing unit (plant)s of a kind of system of processing, including above-mentioned offer.
In order to solve the above technical problems, present invention employs following technical schemes；The plug that first aspect present invention provides
Processing unit (plant), wherein including sequentially connected cooling device and attemperator；
The cooling device includes shell and the jet pipe that is set in shell, and plug is located at the jet pipe center, described
Air-water mixture is provided in jet pipe；
The attemperator includes furnace body and burner, and the plug is provided with the burner, institute on the furnace body
It states and is connected with flue gas in burner.
Plug processing unit (plant) provided by the invention includes sequentially connected cooling device and attemperator, and plug leads to successively
The shell of apparatus for supercooling and the furnace body of attemperator, first pass through cooling device and are cooled down, and pass through after cooling uniformly and keep the temperature dress
It sets and is uniformly heated so that the entire temperature of plug is uniform；After cooling device and attemperator, keep plug temperature equal
It is even, it improves the qualification rate of product and reduces production cost.
Further include the lubricating arrangement being connect with the attemperator further in any of the above-described technical solution, it is described
Lubricating arrangement includes spray ring, and the plug is set in the spray ring, and the spray ring is connected to high-pressure pump.
In any of the above-described technical solution, further, the lubricating arrangement includes corresponding to returning for spray ring setting
Receive case.It is convenient for recycling lubricating fluid using recycling bins, is used after being filtered after recycling, it is cost-effective.
In any of the above-described technical solution, further, the jet pipe is connected to tracheae and water pipe respectively, on the jet pipe
Multiple nozzles are provided with, the nozzle is uniformly distributed along the circumferential direction of the jet pipe.
Under the action of nozzle, the small water droplet of atomization is generated, can ensure the uniformity of plug cooling.
In any of the above-described technical solution, further, the plug can be moved along the center line of the jet pipe.
In any of the above-described technical solution, further, the Mandrel Rotating movement.The housing bottom, which is provided with, to be used for
Collect the sink of cooling water.
In any of the above-described technical solution, further, the burner is multiple, and multiple burners are along the plug
Axis direction is distributed on the furnace body.
By flue gas, localized hyperthermia's situation of flame is avoided, and plug is located in closed furnace body, can ensure to add
The uniformity of heat.
Further include controller further in any of the above-described technical solution, is provided in the burner and the control
The solenoid valve of device connection, the controller can control the aperture of the solenoid valve.
In any of the above-described technical solution, further, the flue for smoke discharging is provided on the furnace body.
The system of processing that second aspect of the present invention provides is provided with the plug processing unit (plant) of first aspect offer, therefore has
The whole advantageous effects for having the plug processing unit (plant) of first aspect offer, just do not repeat one by one herein.
Using above-mentioned technical proposal, the present invention has the advantages that：
Plug processing unit (plant) provided by the invention includes sequentially connected cooling device and attemperator, and plug leads to successively
The shell of apparatus for supercooling and the furnace body of attemperator, first pass through cooling device and are cooled down, and pass through after cooling uniformly and keep the temperature dress
It sets and is uniformly heated so that the entire temperature of plug is uniform；After cooling device and attemperator, keep plug temperature equal
It is even, it improves the qualification rate of product and reduces production cost.
Further, further include the lubricating arrangement being connect with the attemperator；The lubricating arrangement includes spray ring, described
Plug is set in the spray ring, and the spray ring is connected to high-pressure pump.
Further, the jet pipe is connected to tracheae and water pipe respectively；Multiple nozzles, the spray are provided on the jet pipe
Mouth is uniformly distributed along the circumferential direction of the jet pipe.
Further, the burner is multiple, and multiple burners are distributed on the stove along the axis direction of the plug
On body.
The additional aspect and advantage of the present invention will become apparent in following description section, or practice through the invention
Recognize.
Description of the drawings
It below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the positive structure schematic of cooling device in the plug processing unit (plant) that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram of attemperator in the plug processing unit (plant) that the embodiment of the present invention one provides；
Fig. 3 is the structural schematic diagram of lubricating arrangement in the plug processing unit (plant) that the embodiment of the present invention one provides；
Fig. 4 is the inside connection diagram of lubricating arrangement in the plug processing unit (plant) that the embodiment of the present invention one provides；
Fig. 5 is the structural schematic diagram for the plug processing unit (plant) that the embodiment of the present invention one provides；
Fig. 6 is the structural schematic diagram of hopper in the plug processing unit (plant) that the embodiment of the present invention one provides.
Reference numeral：
1, shell；2, water pipe；3, tracheae；
4, jet pipe；5, nozzle；6, plug；
7, cooling device；8, attemperator；9, lubricating arrangement；
11, furnace body；12, flue；13, burner；
14, walking beam；21, spray ring；22, high-pressure pump；
23, recycling bins；27, tilting roller-way；28, hopper.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiments herein and embodiment can be combined with each other.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Explanation is further explained to the present invention with reference to specific embodiment.
Embodiment one
Fig. 1 is the positive structure schematic of cooling device 7 in the plug processing unit (plant) that the embodiment of the present invention one provides；Fig. 2
The structural schematic diagram of attemperator 8 in the plug processing unit (plant) provided for the embodiment of the present invention one.
As shown in Figure 1, Figure 2 and shown in Fig. 5, the plug processing unit (plant) of the embodiment offer of first aspect present invention, including successively
The cooling device 7 and attemperator 8 of connection；
The cooling device 7 includes shell 1 and the jet pipe 4 being set in shell 1, and plug 6 is located at 4 center of the jet pipe
Locate, air-water mixture is provided in the jet pipe 4；
The attemperator 8 includes furnace body 11 and burner 13, is provided with corresponding to the plug 6 on the furnace body 11 described
Burner 13 is connected with flue gas in the burner 13.
Plug processing unit (plant) provided by the invention includes sequentially connected cooling device 7 and attemperator 8, plug 6 according to
It is secondary to first pass through cooling device 7 and cooled down by the shell 1 of cooling device 7 and the furnace body 11 of attemperator 8, it is cooling uniformly after
It is uniformly heated by attemperator 8 so that 6 entire temperature of plug is uniform；After cooling device 7 and attemperator 8,
Keep 6 temperature of plug uniform, improve the qualification rate of product and reduces production cost.
In any of the above-described technical solution, further, the jet pipe 4 is connected to tracheae 3 and water pipe 2 respectively, the spray
Multiple nozzles 5 are provided on pipe 4, the nozzle 5 is uniformly distributed along the circumferential direction of the jet pipe 4.Tracheae 3 is connect with air compressor, just
In the water for forming atomization.
Under the action of nozzle 5, the small water droplet of atomization is generated, can ensure the uniformity that plug 6 cools down.
In any of the above-described technical solution, further, the plug 6 can be moved along the center line of the jet pipe 4.
In any of the above-described technical solution, further, 6 moving in rotation of the plug.
In any of the above-described technical solution, further, the burner 13 described in attemperator 8 be it is multiple, it is multiple described
Burner 13 is distributed on along the axis direction of the plug 6 on the furnace body 11.
By flue gas, localized hyperthermia's situation of flame is avoided, and plug 6 is located in closed furnace body 11, Neng Goubao
Demonstrate,prove the uniformity of heating.
Further include controller further in any of the above-described technical solution, is provided in the burner 13 and the control
The solenoid valve of device connection processed, the controller can control the aperture of the solenoid valve.
In any of the above-described technical solution, further, the flue 12 for smoke discharging is provided on the furnace body 11.
The walking beam 14 is arranged in the furnace body 11, and plug 6 is provided on the walking beam 14.The walking beam 14
In the drive lower swing of driving device.It is shaken on walking beam 14 convenient for plug 6.
The system of processing that second aspect of the present invention provides is provided with the plug processing unit (plant) of first aspect offer, therefore has
The whole advantageous effects for having the plug processing unit (plant) of first aspect offer, just do not repeat one by one herein.
Embodiment two
Fig. 3 is the structural schematic diagram of lubricating arrangement 9 in the plug processing unit (plant) that the embodiment of the present invention one provides；Fig. 4 is this
The inside connection diagram of lubricating arrangement 9 in the plug processing unit (plant) that inventive embodiments one provide.
As shown in Figure 3 and Figure 4, further include connecting with the attemperator 8 further in any of the above-described technical solution
The lubricating arrangement 9 connect, the lubricating arrangement 9 include spray ring 21, and the plug 6 is set in the spray ring 21, the spray ring 21
It is connected to high-pressure pump 22.
In any of the above-described technical solution, further, the lubricating arrangement 9 includes being arranged corresponding to the spray ring 21
Recycling bins 23.It is convenient for recycling lubricating fluid using recycling bins 23, is used after being filtered after recycling, it is cost-effective.
Remaining is as in the first embodiment, details are not described herein again.
Embodiment three
In order to recycle cooling water, in any of the above-described technical solution, further, 1 bottom of the shell, which is provided with, to be used for
Collect the sink of cooling water.
In any of the above-described technical solution, further, the sink is connected to the water pipe 2.Remaining as in the first embodiment,
Details are not described herein again.
By flowing to jet pipe 4 after compressed air and water mixing in cooling device 7 provided by the invention, in the effect of nozzle 5
Under, generate the small water droplet of atomization, in jet pipe 4 by plug 6 it is uniformly cooling, during implementing cooling, single core
The rotation of stick 6 is threadingly advanced, and ensure that in the uniformity that plug 6 cools down in the radial direction of plug 6.It is controlled by the advance of plug 6,
6 axial position of plug is controlled, to realize the position of cooling required cooling, the position that need not be cooled down does not cool down.
As shown in fig. 6, the plug 6 is positioned on multiple hoppers 28, the tilting roller-way 27 is located at the adjacent material
Between slot 28；
The tilting roller-way 27 is set to the bottom of the plug with the angled setting of the plug, the tilting roller-way 27
Portion, and driven and rotated by driving device, to drive the Mandrel Rotating to advance.
It is arranged fluted on the hopper 28, the plug is located in the groove；The plug is pasted with the groove
It closes.
Plug 6 whole soaking, soaking in relatively closed 11 space of furnace body in attemperator 8 provided by the invention
Effect reaches best.The control for coordinating the opening degree of solenoid valve and flue-gas temperature in burner 13 simultaneously, to greatest extent can root
It is adjusted into trip temperature according to the actual conditions of plug 6, to ensure equal thermal effect of the plug 6 in furnace body 11.Plug 6 is in walking beam
The cycle of movement and high-temperature flue gas on 14 has accomplished soaking to greatest extent, extra flue gas in the radial direction in plug 6
Outdoor can be discharged.Plug 6 is used after apparatus for supercooling 7, protective device and lubricating arrangement 9 again successively, ensures product
Quality.
Lubricant in lubricating arrangement 9 provided by the invention in oil drum generates the lubricating fluid of high pressure by high-pressure pump 22, leads to
Piping is transported in spray ring 21.The lubricating fluid that atomization is generated by the nozzle 5 in spray ring 21 is sprayed on 6 surface of plug.Control
By the way of fast cut valve, ensure timeliness.Extra lubricating fluid is recycled by retracting device, was carried out in removal process
Filter.
In conclusion plug processing unit (plant) provided by the invention includes sequentially connected cooling device and attemperator,
Plug passes sequentially through the shell of cooling device and the furnace body of attemperator, first passes through cooling device and is cooled down, after cooling uniformly
It is uniformly heated by attemperator so that the entire temperature of plug is uniform；After cooling device and attemperator, make core
Stick temperature is uniform, improves the qualification rate of product and reduces production cost.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other implementations
Included certain features in example rather than other feature, but the combination of the feature of different embodiments means in the present invention
Within the scope of and form different embodiments.For example, in claims above, embodiment claimed
It is one of arbitrary mode to use in any combination.The information for being disclosed in the background technology part is merely intended to intensification pair
The understanding of the general background technology of the present invention, and be not construed as recognizing or implying in any form that information composition has been this
The prior art well known to field technology personnel.
Claims (10)
1. a kind of plug processing unit (plant), which is characterized in that including sequentially connected cooling device and attemperator；
The cooling device includes shell and the jet pipe that is set in shell, and plug is located at the jet pipe center, the jet pipe
Inside it is provided with air-water mixture；
The attemperator includes furnace body and burner, and the plug is provided with the burner, the burning on the furnace body
Flue gas is connected in mouth.
2. plug processing unit (plant) according to claim 1, which is characterized in that further include the profit being connect with the attemperator
Sliding device；
The lubricating arrangement includes spray ring, and the plug is set in the spray ring, and the spray ring is connected to high-pressure pump.
3. plug processing unit (plant) according to claim 2, which is characterized in that the lubricating arrangement includes corresponding to the spray
The recycling bins of ring setting.
4. plug processing unit (plant) according to claim 1, which is characterized in that the jet pipe connects with tracheae and water pipe respectively
It is logical；
Multiple nozzles are provided on the jet pipe, the nozzle is uniformly distributed along the circumferential direction of the jet pipe.
5. plug processing unit (plant) according to claim 4, which is characterized in that the plug can be along the center of the jet pipe
Line moves.
6. plug processing unit (plant) according to claim 5, which is characterized in that the Mandrel Rotating movement.
7. plug processing unit (plant) according to claim 1, which is characterized in that the burner is multiple, multiple burners
Axis direction along the plug is distributed on the furnace body.
8. plug processing unit (plant) according to claim 7, which is characterized in that further include controller, setting in the burner
There are the solenoid valve being connect with the controller, the controller that can control the aperture of the solenoid valve.
9. plug processing unit (plant) according to claim 1, which is characterized in that be provided with for smoke discharging on the furnace body
Flue.
10. a kind of system of processing, which is characterized in that including plug processing unit (plant) as described in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765563.8A CN108723090A (en) | 2018-07-12 | 2018-07-12 | Plug processing unit (plant) and system of processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810765563.8A CN108723090A (en) | 2018-07-12 | 2018-07-12 | Plug processing unit (plant) and system of processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108723090A true CN108723090A (en) | 2018-11-02 |
Family
ID=63926192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810765563.8A Pending CN108723090A (en) | 2018-07-12 | 2018-07-12 | Plug processing unit (plant) and system of processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108723090A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412862A (en) * | 2020-04-16 | 2020-07-14 | 达力普石油专用管有限公司 | Detection device for core rod |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04270003A (en) * | 1991-02-23 | 1992-09-25 | Sumitomo Metal Ind Ltd | Hot tube making tool and its production |
| JPH05277517A (en) * | 1992-03-31 | 1993-10-26 | Nippon Steel Corp | Method for working up mandrel bar in mandrel mill |
| CN1137426A (en) * | 1994-08-18 | 1996-12-11 | 曼内斯曼股份公司 | Interchanging mandrel device for core rod tube rolling mills |
| CN102489517A (en) * | 2011-12-13 | 2012-06-13 | 衡阳华菱钢管有限公司 | On-line control method for spraying graphite lubricant to mandrel |
| CN103567225A (en) * | 2013-11-22 | 2014-02-12 | 太原重工股份有限公司 | Mandrel cooling device |
| CN205042880U (en) * | 2015-02-10 | 2016-02-24 | 长葛市一鸣机械有限公司 | Small -bore seamless steel pipe floats mobile core stick continuous rolling mill train |
-
2018
- 2018-07-12 CN CN201810765563.8A patent/CN108723090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04270003A (en) * | 1991-02-23 | 1992-09-25 | Sumitomo Metal Ind Ltd | Hot tube making tool and its production |
| JPH05277517A (en) * | 1992-03-31 | 1993-10-26 | Nippon Steel Corp | Method for working up mandrel bar in mandrel mill |
| CN1137426A (en) * | 1994-08-18 | 1996-12-11 | 曼内斯曼股份公司 | Interchanging mandrel device for core rod tube rolling mills |
| CN102489517A (en) * | 2011-12-13 | 2012-06-13 | 衡阳华菱钢管有限公司 | On-line control method for spraying graphite lubricant to mandrel |
| CN103567225A (en) * | 2013-11-22 | 2014-02-12 | 太原重工股份有限公司 | Mandrel cooling device |
| CN205042880U (en) * | 2015-02-10 | 2016-02-24 | 长葛市一鸣机械有限公司 | Small -bore seamless steel pipe floats mobile core stick continuous rolling mill train |
Non-Patent Citations (1)
| Title |
|---|
| 龚尧等: "《现代钢铁工业技术连轧钢管》", 31 December 1992 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111412862A (en) * | 2020-04-16 | 2020-07-14 | 达力普石油专用管有限公司 | Detection device for core rod |
| CN111412862B (en) * | 2020-04-16 | 2022-03-01 | 达力普石油专用管有限公司 | Detection device for core rod |
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Application publication date: 20181102 |
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