CN206966315U - High-speed wire production line - Google Patents
High-speed wire production line Download PDFInfo
- Publication number
- CN206966315U CN206966315U CN201720704642.9U CN201720704642U CN206966315U CN 206966315 U CN206966315 U CN 206966315U CN 201720704642 U CN201720704642 U CN 201720704642U CN 206966315 U CN206966315 U CN 206966315U
- Authority
- CN
- China
- Prior art keywords
- mill
- milling train
- production line
- rolling
- unit
- 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.)
- Active
Links
Landscapes
- Metal Rolling (AREA)
Abstract
The utility model belongs to wire rod rolling technology, specifically disclose a kind of high-speed wire production line, by the way that mm finishing mill unit and reducing-sizing mill are arranged into separate transmission unit, the accurate temperature controlled between mm finishing mill unit and between reducing-sizing mill, by setting cooling device between mm finishing mill unit and between reducing-sizing mill and replying section, effectively reduce the rolled piece core table temperature difference, solves the problems, such as the rise of high speed wire rod finishing block temperature, and by controlling the cooling procedure between mm finishing mill unit and reducing-sizing mill, adjust cooling parameter, so as to reduce wire rod head and tail temperature difference, improve wire rod poker；Compared with prior art, product quality is significantly improved, effectively reduces production cost.
Description
Technical field
The utility model belongs to field of metallurgy, and in particular to a kind of high-speed wire production line.
Background technology
One of the staple product of wire rod as steel industry, it is widely used in building, machinery and Steel Wire Products Industry.In recent years
Come, sustained production increase, 2016 annual productions reach 14218.8 ten thousand tons, account for the 12.49% of China Steel total amount.
It is well known that modernization high-speed wire mill in, generally obtained in a manner of improving wire rod finish to gauge speed compared with
High yield.The finish to gauge of high-speed wire mill at present ensures speed up to 115m/s, even more high.To reach so high rolling
Speed is, it is necessary to can be adapted to the rod-rolling mill of high speed stable rolling, and institute leads to generally using central driving wire finishing mill at present
The high-speed rolling for crossing finishing mill and reducing-sizing mill is met the product of size requirement, and ensures the yield of wire rod.
Can be on the premise of microalloy element not be added, by the big pressure of low temperature and quickly using modes such as controlled rolling and controlled coolings
The modes of production such as cooling so that austenite crystal is refined, and then refines final products tissue, is had by refined crystalline strengthening
There are intensity, the product of good plasticity.
Because the dynamic velocity drop during wire rod high-speed rolling is difficult to solve under so high speed, therefore traditional line
Material finishing mill can only be by the way of central driving, but uses central driving, carry out controlled rolling and controlled cooling production high-speed rod when still
So problems be present：
1) frame of mm finishing mill unit 10 or 8 frames are continuously arranged, rolled piece after mm finishing mill unit rolls temperature rise up to 100~150
DEG C, uncontrollable rolled piece temperature；
2) when rolling is compared with large dimension wire product, mm finishing mill unit need to get rid of frame rolling, and this space-time crosses frame also must be at a high speed
Operating, unloaded power consumption is higher and causes the empty unnecessary power consumption for crossing frame；
3) frame of mm finishing mill unit 10 or 8 frames use fixed speed ratio, and hole type design is single.
The content of the invention
In view of this, the purpose of this utility model is to provide a kind of high-speed wire production line, to solve current high-speed line
Problem present in material plant process arrangement and production, reaches energy-saving, improves productivity effect, reduces the mesh of production cost
's.
To reach above-mentioned purpose, the utility model provides following technical scheme：A kind of high-speed wire production line, including edge are rolled
Roughing mills, intermediate mill, pre-finishing mill group, cooling device I, mm finishing mill unit and the cooling device that production mode reform processed is set gradually
II, the mm finishing mill unit is separate transmission formula unit, and each milling train for forming mm finishing mill unit is that 45 ° of cantilevereds are crossed milling train, institute
Cooling device II is stated to be correspondingly arranged between each rolling-mill housing.
Further, in addition to along Rolling Production direction the reducing-sizing mill and cooling device of mm finishing mill unit rear end are arranged on
III, the reducing-sizing mill is separate transmission formula unit, and each milling train for forming reducing-sizing mill is that 45 ° of cantilevereds top cross are rolled
Machine, the cooling device III are correspondingly arranged between each rolling-mill housing.
Further, the mm finishing mill unit is crossed milling train by 45 ° of cantilevereds of 8~10 frame separate transmissions and formed.
Further, the reducing-sizing mill is crossed milling train by 45 ° of cantilevereds of 2~4 frame separate transmissions and formed.
Further, each 45 ° of cantilevereds are crossed the transmission side of milling train and/or fore side is disposed with motor, the motor with it is each
45 ° of cantilevereds are connected between being crossed milling train by power transmission shaft and gear-box, or directly by being driven axis connection.
Further, the roughing mills arrange that milling train or flat roll mill form by 6 frame horizontally and vertically alternatives.
Further, the intermediate mill arranges that milling train or flat roll mill form by 6 frame horizontally and vertically alternatives.
Further, the pre-finishing mill group arranges that milling train or flat vertical arrangement cantilevered are crossed milling train by 4~6 frame horizontally and vertically alternatives
Composition.
Further, it is provided with kink between each milling train in the pre-finishing mill group.
Further, the cooling device II and cooling device III are water cooling box or air cooling equipment.
The beneficial effects of the utility model are：Mm finishing mill unit and reducing-sizing mill use separate transmission formula unit, can essence
The really temperature between control mm finishing mill unit and reducing-sizing mill；By setting cooling device between mm finishing mill unit and between reducing-sizing mill
And section is replied, the rolled piece core table temperature difference is effectively reduced, solves the problems, such as the rise of high-speed wire finish-rolling part temperature；By using only
Write a biography dynamic, when rolling compared with large dimension wire product, mm finishing mill unit gets rid of frame rolling space-time and crosses frame without operating, saves electricity
Consumption；Due to using separate transmission, mm finishing mill unit and reducing-sizing mill speed than can flexible design, hole type design also can flexible design；
Control in cooling procedure, adjust cooling parameter by using variable water volume or the type of cooling for becoming hydraulic pressure, it is warm end to end to reduce wire rod
Difference, improve wire rod poker；The technology arrangement significantly improves product of production line quality, improves productivity effect, effectively drop
Low production cost.The production line can produce all wire products in high-speed rod Φ 4.0mm~Φ 28.0mm specification limits.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is that common high-speed wire production line arranges sketch；
Fig. 2 is that high-quality high-speed wire production line arranges sketch；
Fig. 3 is that separate transmission milling train arranges sketch (motor transmission side arrangement) with motor；
Fig. 4 is that separate transmission milling train arranges sketch with motor (motor transmission side is arranged with fore side both sides).
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
Embodiment one
Fig. 1 is that common high-speed wire production line arranges sketch, and the production line includes what is set gradually along Rolling Production direction
Roughing mills 1, intermediate mill 3, pre-finishing mill group 5, cooling device I 6, mm finishing mill unit 8 and cooling device II 9, using the production
Line be sequentially completed roughing, in roll, pre- finish rolling, pre- smart roller repairing, finish rolling, spinning, it is air-cooled and collection retracting collection etc. step.
Specifically, the roughing mills 1 in the present embodiment arrange milling train or plain-barreled roll with intermediate mill 3 by 6 frame horizontally and vertically alternatives
Milling train forms, and the operation of rolling carries out 6 passage roughing, 6 by the way of horizontally and vertically alternative or flat rolling to the steel billet after heating
Rolled in secondary, rolling mode uses grooveless rolling or groove rolling；Guide and guard, roughing mill are equipped with during rolling before and after each rolling mill
Group 1 is correspondingly provided with flying shear 2,4 with the rear of intermediate mill 3；Steel billet initial cross-section size Control is in 140mm × 140mm~180mm
Initial temperature control when × 180mm, steel billet bite the first rolling mill in roughing mills is at 800 DEG C~1050 DEG C, the operation of rolling
In the control of every time deformation temperature at 800 DEG C~1100 DEG C, every time lengthening coefficient is 1.15~1.45, and every time, which is spreaded, is
Number is 0.3~0.45, and the steel billet speed of service is 0.1m/s~10.0m/s in the operation of rolling.
Pre-finishing mill group 5 in the present embodiment arranges that milling train or flat vertical arrangement cantilevered are crossed and rolled by 4~6 frame horizontally and vertically alternatives
Machine is formed, and its pass is ellipse-circular hole system, and the pre- finish rolling that 4~6 passages are carried out to the rolled piece by roughing and finish rolling is rolled
System.Guide and guard are equipped with before and after each milling train in pre-finishing mill group, kink is provided between each milling train, realizes tension free rolling, rolled
Flying shear 7 is provided with into rear, head and tail shape irregularity can be cut.The control of every time deformation temperature is at 800 DEG C in the operation of rolling
~1100 DEG C, every time lengthening coefficient is 1.15~1.45, and every time spread coefficient is 0.1~0.45, steel in the operation of rolling
The base speed of service is 3.0m/s~28.0m/s；
Mm finishing mill unit 8 in the present embodiment is crossed milling train by 45 ° of cantilevereds of 8~10 frame separate transmissions and formed, and pass is
Ellipse-circular hole system, and cooling device II 9 and reply section are set between each frame of mm finishing mill unit 8.To passing through pre- finish rolling
The rolled piece of rolling and pre- smart roller repairing carries out free-standing controlled rolling, and due to using separate transmission formula unit, each 45 ° of frame hangs
Arm-type top cross inlet of rolling mill temperature accurately controls, and cooling device II 9 can use water tank and set corresponding reply segment length,
Ensure temperature value and core table temperature approach of the rolled piece in each frame porch；When cooling device II 9 is using water tank, variable water volume can be used
Or the mode of change hydraulic pressure adjusts cooling parameter, so as to reduce wire rod head and tail temperature difference, wire rod poker is improved.Each frame rolls during rolling
It is equipped with guide and guard before and after machine, in the operation of rolling, the control of every time deformation temperature is 750 DEG C~1050 DEG C, every time extension system
Number is 1.15~1.45, and every time spread coefficient is 0.1~0.45, in the operation of rolling steel billet speed of service be 10.0m/s~
100.0m/s。
Finish rolling and after controlling cooling, spun, it is air-cooled after obtain wire product, collection retracting collection.
Embodiment two
Fig. 2 is that high-quality high-speed wire production line arranges sketch, and the production line includes what is set gradually along Rolling Production direction
Roughing mills 1, intermediate mill 3, pre-finishing mill group 5, cooling device I 6, mm finishing mill unit 8, cooling device II 9, reducing-sizing mill 10
And cooling device III 11, using the production line be sequentially completed roughing, in roll, pre- finish rolling, pre- smart roller repairing, finish rolling, finish rolling control
Refrigeration but, subtract sizing, subtract sizing control cooling, spinning, it is air-cooled and collection retracting collection etc. step.
Specifically, the roughing mills 1 in the present embodiment arrange milling train or plain-barreled roll with intermediate mill 3 by 6 frame horizontally and vertically alternatives
Milling train forms, and the operation of rolling carries out 6 passage roughing, 6 by the way of horizontally and vertically alternative or flat rolling to the steel billet after heating
Rolled in secondary, rolling mode uses grooveless rolling or groove rolling；Guide and guard, roughing mill are equipped with during rolling before and after each rolling mill
Group 1 is correspondingly provided with flying shear 2,4 with the rear of intermediate mill 3；Steel billet initial cross-section size Control is in 140mm × 140mm~180mm
Initial temperature control when × 180mm, steel billet bite the first rolling mill in roughing mills is at 800 DEG C~1050 DEG C, the operation of rolling
In the control of every time deformation temperature at 800 DEG C~1100 DEG C, every time lengthening coefficient is 1.15~1.45, and every time, which is spreaded, is
Number is 0.3~0.45, and the steel billet speed of service is 0.1m/s~10.0m/s in the operation of rolling.
Pre-finishing mill group 5 in the present embodiment arranges that milling train or flat vertical arrangement cantilevered are crossed and rolled by 4~6 frame horizontally and vertically alternatives
Machine is formed, and its pass is ellipse-circular hole system, and the pre- finish rolling that 4~6 passages are carried out to the rolled piece by roughing and finish rolling is rolled
System.Guide and guard are equipped with before and after each milling train in pre-finishing mill group, kink is provided between each milling train, realizes tension free rolling, rolled
Flying shear 7 is provided with into rear, head and tail shape irregularity can be cut.The control of every time deformation temperature is at 800 DEG C in the operation of rolling
~1100 DEG C, every time lengthening coefficient is 1.15~1.45, and every time spread coefficient is 0.1~0.45, steel in the operation of rolling
The base speed of service is 3.0m/s~28.0m/s；
Mm finishing mill unit 8 in the present embodiment is crossed milling train by 45 ° of cantilevereds of 8~10 frame separate transmissions and formed, and pass is
Ellipse-circular hole system, and cooling device II 9 is set between each frame of mm finishing mill unit 8 and replys section, to passing through pre- finish rolling
The rolled piece of rolling and pre- smart roller repairing carries out free-standing controlled rolling.Due to using separate transmission formula unit, each 45 ° of frame hangs
Arm-type top cross inlet of rolling mill temperature accurately controls, and cooling device II 9 can use water tank and set corresponding reply segment length,
Ensure temperature value and core table temperature approach of the rolled piece in each frame porch；When cooling device II 9 is using water tank, variable water volume can be used
Or the mode of change hydraulic pressure adjusts cooling parameter, so as to reduce wire rod head and tail temperature difference, wire rod poker is improved.Each frame rolls during rolling
It is equipped with guide and guard before and after machine, in the operation of rolling, the control of every time deformation temperature is 750 DEG C~1050 DEG C, every time extension system
Number is 1.15~1.45, and every time spread coefficient is 0.1~0.45, in the operation of rolling steel billet speed of service be 10.0m/s~
100.0m/s。
Reducing-sizing mill 10 in the present embodiment is crossed milling train by 45 ° of cantilevereds of 2~4 frame separate transmissions and formed, and
Cooling device III 11 is set between each frame of reducing-sizing mill 10 and replys section, to what is cooled down by finish rolling rolling and finishing rolling control
Rolled piece carries out the big press control rolling of free-standing low temperature.Due to using separate transmission formula unit, each 45 ° of cantilevereds of frame, which are crossed, rolls
Machine inlet temperature accurately controls, and cooling device III 11 can use water tank and set corresponding reply segment length, ensure rolled piece
Temperature value and core table temperature approach in each frame porch；When cooling device III 11 is using water tank, variable water volume can be used or become water
The mode of pressure adjusts cooling parameter, so as to reduce wire rod head and tail temperature difference, improves wire rod poker.
Tube reducing unit pass is ellipse-circular hole system in reducing-sizing mill 10, and sizing unit pass is ellipse-circular hole
Type system or circle-circular hole system；Guide and guard are equipped with during rolling before and after each rolling mill, every time deformation is warm in the operation of rolling
Degree control is 750 DEG C~1000 DEG C, and tube reducing unit is the big pressure deformation of low temperature, and every time lengthening coefficient is 1.10~1.45,
Every time spread coefficient be 0.10~0.45, sizing unit mainly serve return it is round, every time lengthening coefficient be 1.00~
1.15, every time spread coefficient is 0.01~0.15, and the steel billet speed of service is 8.0m/s~120.0m/s in the operation of rolling.
Specifically, when reducing-sizing mill 10 is made up of 45 ° of cantilevereds top cross milling train of 4 frame separate transmissions, 4 frame reducing sizing mills
In group 10, two frame tube reducing unit passes are ellipse-circular hole system, and two frame sizing unit passes are ellipse-circular hole system
Or circle-circular hole system；When reducing-sizing mill 10 is made up of 45 ° of cantilevereds top cross milling train of 3 frame separate transmissions, three rolling mills
Pass be then ellipse-circle-circular hole system.
After subtracting fixed diameter rolling and controlling cooling, spun, it is air-cooled after obtain wire product, collection retracting collection.
In the various embodiments described above, water cooling box, air-cooled can be selected in cooling device I 6, cooling device II 9 and cooling device III 11
Device or other cooling devices, by adjusting cooling parameter, reach the purpose for reducing wire rod head and tail temperature difference, improve the logical of wire rod
Bar.
In the various embodiments described above, 45 ° of cantilevereds of each frame of composition mm finishing mill unit 8 and reducing-sizing mill 10 are crossed milling train 13 and divided
Do not driven by independent motor 14, motor 14 is arranged in the transmission side or fore side of each milling train 13, the motor 14 and milling train 13
Between can add gear-box 15, connected respectively by power transmission shaft 16 between gear-box 15 and motor 14 and milling train 13.Certainly, also can be direct
Milling train is connected with motor by power transmission shaft.Laying form can be adjusted according to concrete conditions such as place, equipment.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (10)
1. a kind of high-speed wire production line, including set gradually along Rolling Production direction roughing mills, intermediate mill, pre- finish rolling
Unit, cooling device I, mm finishing mill unit and cooling device II, it is characterised in that：The mm finishing mill unit is separate transmission formula unit,
Each milling train of composition mm finishing mill unit is that 45 ° of cantilevereds are crossed milling train, and the cooling device II is correspondingly arranged at each rolling-mill housing
Between.
2. high-speed wire production line according to claim 1, it is characterised in that：Also include being arranged on along Rolling Production direction
The reducing-sizing mill and cooling device III of mm finishing mill unit rear end, the reducing-sizing mill are separate transmission formula unit, and composition subtracts fixed
Each milling train of footpath unit is that 45 ° of cantilevereds are crossed milling train, and the cooling device III is correspondingly arranged between each rolling-mill housing.
3. high-speed wire production line according to claim 2, it is characterised in that：The mm finishing mill unit is independent by 8~10 framves
45 ° of cantilevereds of transmission are crossed milling train composition.
4. high-speed wire production line according to claim 3, it is characterised in that：The reducing-sizing mill is independent by 2~4 framves
45 ° of cantilevereds of transmission are crossed milling train composition.
5. high-speed wire production line according to claim 4, it is characterised in that：Each 45 ° of cantilevereds are crossed the transmission of milling train
Side and/or fore side are disposed with motor, and the motor and each 45 ° of cantilevereds are connected between being crossed milling train by power transmission shaft and gear-box
Connect, or directly by being driven axis connection.
6. high-speed wire production line according to claim 5, it is characterised in that：The roughing mills are by 6 frame horizontally and vertically alternatives
Arrange milling train or flat roll mill composition.
7. high-speed wire production line according to claim 6, it is characterised in that：The intermediate mill is by 6 frame horizontally and vertically alternatives
Arrange milling train or flat roll mill composition.
8. high-speed wire production line according to claim 7, it is characterised in that：The pre-finishing mill group is flat vertical by 4~6 framves
It is alternately arranged milling train or flat vertical arrangement cantilevered is crossed milling train composition.
9. high-speed wire production line according to claim 8, it is characterised in that：Between each milling train in the pre-finishing mill group
Provided with kink.
10. high-speed wire production line according to claim 2, it is characterised in that：The cooling device II and cooling device
III is water cooling box or air cooling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720704642.9U CN206966315U (en) | 2017-06-16 | 2017-06-16 | High-speed wire production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720704642.9U CN206966315U (en) | 2017-06-16 | 2017-06-16 | High-speed wire production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206966315U true CN206966315U (en) | 2018-02-06 |
Family
ID=61408415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720704642.9U Active CN206966315U (en) | 2017-06-16 | 2017-06-16 | High-speed wire production line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206966315U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413847A (en) * | 2017-06-16 | 2017-12-01 | 中冶赛迪工程技术股份有限公司 | High-speed wire mill method and its production line |
| CN108500062A (en) * | 2018-05-04 | 2018-09-07 | 哈尔滨哈飞工业有限责任公司 | Reducing-sizing mill monitors Combined Protection system on-line |
| CN110052495A (en) * | 2019-04-24 | 2019-07-26 | 中冶赛迪工程技术股份有限公司 | A kind of long material endless rolling production line of short route and its milling method |
| CN110153199A (en) * | 2019-05-20 | 2019-08-23 | 北京科技大学 | A kind of controlled rolling method of large scale rod bar |
| CN111530924A (en) * | 2020-05-08 | 2020-08-14 | 凌源钢铁股份有限公司 | Method for producing nonferrous metal wires of different specifications by using high-speed wire mill |
| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
| CN114798725A (en) * | 2022-05-30 | 2022-07-29 | 重庆钢铁股份有限公司 | Bar and rolling method and rolling system thereof |
-
2017
- 2017-06-16 CN CN201720704642.9U patent/CN206966315U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107413847A (en) * | 2017-06-16 | 2017-12-01 | 中冶赛迪工程技术股份有限公司 | High-speed wire mill method and its production line |
| CN108500062A (en) * | 2018-05-04 | 2018-09-07 | 哈尔滨哈飞工业有限责任公司 | Reducing-sizing mill monitors Combined Protection system on-line |
| CN108500062B (en) * | 2018-05-04 | 2019-06-18 | 哈尔滨哈飞工业有限责任公司 | Reducing-sizing mill monitors Combined Protection system on-line |
| CN110052495A (en) * | 2019-04-24 | 2019-07-26 | 中冶赛迪工程技术股份有限公司 | A kind of long material endless rolling production line of short route and its milling method |
| CN110153199A (en) * | 2019-05-20 | 2019-08-23 | 北京科技大学 | A kind of controlled rolling method of large scale rod bar |
| CN111530924A (en) * | 2020-05-08 | 2020-08-14 | 凌源钢铁股份有限公司 | Method for producing nonferrous metal wires of different specifications by using high-speed wire mill |
| CN114653762A (en) * | 2022-05-10 | 2022-06-24 | 新余钢铁股份有限公司 | Water-cooling and cooling-control method and system for head of high-speed wire rod |
| CN114798725A (en) * | 2022-05-30 | 2022-07-29 | 重庆钢铁股份有限公司 | Bar and rolling method and rolling system thereof |
| CN114798725B (en) * | 2022-05-30 | 2024-05-14 | 重庆钢铁股份有限公司 | Bar and rolling method and rolling system thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206966315U (en) | High-speed wire production line | |
| CN107413847A (en) | High-speed wire mill method and its production line | |
| CN101462121B (en) | Wire rod bar blooming mill | |
| CN103341487B (en) | A kind of high-speed rod close-coupled atresia rolling line and production method | |
| CN210586365U (en) | Wire rod production line | |
| CN102247981B (en) | Structural steel rolling production line and production process thereof | |
| CN102310118A (en) | High strength flat wire production technology and equipment | |
| CN105170646A (en) | Economical bar sizing production line and method | |
| CN103817148A (en) | Control method for reducing network cementite of steel wire rod for cord thread | |
| CN104384192B (en) | Bench and seamless pipe milling method | |
| CN105618481A (en) | Equipment and process for conducting protruding roller rolling through continuous casting slab waste heat | |
| CN205413921U (en) | Novel two slab band cold rolling mills of high accuracy | |
| CN107252822A (en) | A kind of eighteen-high mill | |
| CN203140425U (en) | Production processing device for high speed wire rods | |
| CN206997345U (en) | A kind of minimum specification cord steel wire craft arrangement | |
| CN103008361B (en) | Method for controlling bending of steel plate head | |
| CN109078987B (en) | Method for reducing high point at tail of steel rail in universal continuous rolling | |
| CN106513614A (en) | Method for producing all-steel grade casting blank by billet continuous casting machine | |
| CN101077505A (en) | Seamless steel pipe restraint tandem rolling short flowpath roller milling process | |
| CN203750993U (en) | Integrated inclined and longitudinal rolling anchor rod rolling mill | |
| CN104399748B (en) | A kind of production technology that can replace conventional broadband steel hot continuous rolling | |
| CN103230943A (en) | Method for improving bending of head portion of medium plate | |
| CN202087575U (en) | Profile steel rolling production line | |
| CN203316478U (en) | High-speed wire rod compact type imporous rolling production line | |
| CN202021199U (en) | Liquid-core high reduction rolling equipment for continuous casting machines |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |