CN108380832B - A kind of flexible molding device producing seamless metal pipe - Google Patents
A kind of flexible molding device producing seamless metal pipe Download PDFInfo
- Publication number
- CN108380832B CN108380832B CN201810311130.5A CN201810311130A CN108380832B CN 108380832 B CN108380832 B CN 108380832B CN 201810311130 A CN201810311130 A CN 201810311130A CN 108380832 B CN108380832 B CN 108380832B
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- roll
- bearing
- shaft
- rack
- bearing block
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/006—Continuous casting of metals, i.e. casting in indefinite lengths of tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/168—Controlling or regulating processes or operations for adjusting the mould size or mould taper
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
A kind of flexible molding device producing seamless metal pipe mainly includes gantry base, rack, framework pillar, housiung separator, ladle, arc sheetmetal, lead screw fixed mechanism, lead screw, side seal board, balance mechanism, roller system support base, wedge block, wedge block adjusting bracket, connecting shaft A, connecting shaft B, baffle, bearing block A, forming tubular product device, Hyperbolic Roll axis, heart roll shaft etc..The horizontal tilt angle of the present invention adjustable Hyperbolic Roll axis and heart roll shaft, keeps finished product wall thickness dimension specification broad.The horizontal displacement of adjustable Hyperbolic Roll axis and heart roll shaft present position is poor, the adjustment of the adjustment diagonally spent in conjunction with lead screw and balance mechanism, connecting shaft B to roll gap, and the location arrangements of forming tubular product device, the caliber size that adjustment shaping pipe may be implemented, keeps finished product caliber size specification broad.Can be energy saving, improve production efficiency.
Description
Technical field
The present invention relates to Field of Heat-treatment, in particular to a kind of flexible formation equipment about seamless metal pipe production.
Background technique
Seamless steel pipe is one of important raw material of the national economic development, it is a kind of relatively inexpensive rolling shapes, and
And it is widely used in industries such as chemical industry, petroleum, electric power, machinery, coal, military project, aerospaces.Seamless metal
Pipe has hollow section, a large amount of pipelines for being used as trandfer fluid, such as transfer oil, natural gas, coal gas and water and certain solid materials
Pipeline etc..Hollow tube is compared with solid tubing, and when bending resistance torsional strength is identical, lighter in weight is a kind of Economic Section
Material.Manufacture structural member and machine components are widely used in, stock utilization can be improved, save material and machining period.The world is each
State, especially industrial more developed country all take much count of the production and trade of seamless steel pipe.Transport service, equipment industry, materials industry etc.
The rapid growth of every profession and trade has driven the demand in entire seamless steel pipe market, promotes the swift and violent hair of entire Seamless steel tube industry
Exhibition.Seamless metal pipe it is many kinds of, be broadly divided into heavy caliber and small-bore two kinds of bore specifications by specification, and pass through wall thickness
Size distinction thin-walled and heavy wall.Heavy caliber thick wall seamless steel tube is the important foundation component that thermoelectricity, nuclear power generating equipment use, currently,
High temperature high voltage resistant heavy caliber thick wall seamless steel tube urgently to be solved at home can only be few using open die forging cooperation Boring technique
Amount provides, thin-wall steel tube be also it is widely used, such as geological prospecting, in the associated posts type industry such as cracking of oil.For any mouth
The seamless steel pipe of diameter and wall thickness, the country can produce in batches and stable product quality, technology stability are reliable and has knowhow
Producer almost without.It is unable to satisfy demand of the current domestic development to plurality of specifications seamless steel pipe, and the part of notch can only
It is under one's control with fancy price from external import.A kind of completely new seamless metal pipe molding equipment is needed now, is met domestic
To the production requirement of seamless tubular goods.
Summary of the invention
The object of the present invention is to provide a kind of flexible molding devices of seamless metal pipe for being able to produce plurality of specifications.
The invention mainly comprises organic frame pedestal, rack, framework pillar, housiung separator, ladle, arc sheetmetal, lead screws
Fixed mechanism, lead screw, side seal board, balance mechanism, roller system support base, wedge block, wedge block adjusting bracket, connecting shaft A, connecting shaft B,
Baffle, bearing block A, forming tubular product device, Hyperbolic Roll axis, heart roll shaft, roll side block oil ring, roll side bearing end cap, gasket,
Aligning roller bearing, opposite side bearing (ball) cover, opposite side oil scraper ring, locked spacer, round nut, bearing block B, screw rod A, screw rod B, bullet
Spring, support plate, support base, roll shaft and roller.
Wherein, tubing former is fixed in gantry base, is respectively equipped with rack in the two sides on gantry base top, two
Pass through four housiung separator connections between rack.Framework pillar is bolted in gantry base, and column is two roller systems
Support base is corresponding to be set on the rack, and roller system support base lower part is in contact with the wedge block being fixed on the rack.Each
The two sides on roll axial direction of wedge block are fixed by baffle respectively, and baffle is bolted in rack.
The lower end of wedge block adjusting bracket is bolted on the two sides along roll radial direction of rack, the upper end of wedge block adjusting bracket
Equipped with threaded hole, the grafting screw rod A in threaded hole, screw rod A extend to the outside of wedge-shaped adjusting bracket.On two roller system support bases
It is respectively equipped with groove, connecting shaft A is equipped in groove, is provided with threaded hole, spiral shell with the corresponding position of groove on roller system support base
Bar B is plugged in threaded hole, and spring is socketed on screw rod, and spring is placed in the outside of roller system support base, and spring and screw rod B composition are flat
Weigh mechanism.The top of roller system support base is equipped with through-hole, and through-hole is nested with lead screw to be connected, and lead screw fixed mechanism is hollow cylindricality
Structure, hollow space are provided with threaded hole, and lead screw fixed mechanism is fastened by bolts on the rack, and lead screw and lead screw fixed mechanism are logical
Threaded connection is crossed, lead screw one end is pierced by by through-hole above rack, and the lead screw other end is embedded in roller system support base, with connecting shaft A plane
Contact.One end of one connecting shaft A is in contact with screw rod B.The other end of one connecting shaft A is connected through a screw thread with bearing block A,
In one end of the inside grafting Hyperbolic Roll axis of bearing block A.Roll is successively socketed on the axial direction of Hyperbolic Roll axis
Side block oil ring, roll side bearing end cap, aligning roller bearing, opposite side bearing (ball) cover, opposite side oil scraper ring, locked spacer and circle spiral shell
Mother, roll side block oil ring are stuck on the shaft shoulder and form oil sealing with roll side bearing lid, and roll side bearing end cap is fixed on gasket
On the bearing block A and outer ring of fixed self-aligning roller bearing, the inner ring side of self-aligning roller bearing is fixed on the shaft shoulder, and the other side is solid
It is scheduled on the bearing (ball) cover of opposite side.The side of opposite side oil scraper ring is stuck on the shaft shoulder and forms oil sealing with opposite side bearing cap, to side bearing
End cap is fixed on bearing block A and the outer ring of fixed self-aligning roller bearing.The other side of opposite side oil scraper ring is by round nut and only
Mobile gasket is threadedly coupled.The other end of another connecting shaft is connected with bearing block B, in the inside grafting heart roll shaft of bearing block B.
It is connected between bearing block A and bearing block B by connecting shaft B, bearing block A is connected with one end of connecting shaft B by bolt, connection
The other end and bearing block B plane contact of axis B.The upper rack being connected with bearing block B is equipped with arc sheetmetal, in curved metal
The top of plate is equipped with support plate, is equipped with oblong openings on the supporting plate, and in the fixed ladle of the opening of support plate, ladle is upper
The shell of under shed.In Hyperbolic Roll axis and heart roll shaft, close to the end of bearing block A and bearing block B, setting one and steel
The side seal board being threadedly coupled is wrapped, the other end of Hyperbolic Roll axis is fixedly connected with universal shaft, the output shaft of universal shaft and motor
It is connected.
In the lower part of Hyperbolic Roll axis and heart roll shaft, the close rack side adjacent with heart roll shaft is equipped with forming tubular product
Device.Forming tubular product device includes support base, roll shaft and roller.Support base is the channel steel type shell of upper opening, the two sides of support base
Between by roll shaft be connected, on roll shaft be socketed roller set.
In material, the direction being related to is on the basis of roll mandrel.
In the use of the present invention, liquid metal is flowed down from ladle, start to roll into two roll gap gaps, thermal state metal plate passes through
The tube forming device of lower section increases plate radian, and later along camber metal plate, thermal state metal plate comes back to two roll gap gaps
Inlet carries out metallurgical remelting, plate is made to form closed annular；Plate has position in roll mandrel upwards in this process
It moves, so as to roll the tubing of different length.
The invention has the following advantages over the prior art:
1, two lead screws compress connecting shaft A by being threadedly engaged, and bring it about rotation, adjustable Hyperbolic Roll axis with
The horizontal tilt angle of heart roll shaft, by tighten balance mechanism and exchange connecting shaft B, adjustable two roller of two-way interaction it
Between distance, two kinds of regulative modes work at the same time the wall thickness dimension of adjustable shaping pipe, make finished product wall thickness dimension specification compared with
It is wide in range.
2, by wedge block adjusting bracket, move radially wedge block along roll, so adjustable Hyperbolic Roll axis and
The horizontal displacement of heart roll shaft present position is poor, and the adjustment diagonally spent in conjunction with lead screw and balance mechanism, connecting shaft B are to the tune of roll gap
Whole and forming tubular product device location arrangements may be implemented the caliber size of adjustment shaping pipe, make finished product caliber size specification
It is broad.
3, one of processing program is only needed from liquid metal to metal pipe material, can be energy saving, improve production efficiency.
Detailed description of the invention
Fig. 1 is equipment main view of the invention；
Fig. 2 is equipment side view of the invention；
Fig. 3 is equipment top view of the invention；
Fig. 4 is ladle and roll perspective view of the invention；
Fig. 5 is Hyperbolic Roll roller owner's view of the invention；
In figure, 1- gantry base, 2- rack, 3- framework pillar, 4- housiung separator, 5- ladle, 6- arc sheetmetal, 7-
Bar fixing mechanism, 8- lead screw, 9- side seal board, 10- balance mechanism, 11- roller system support base, 12- wedge block, 13- wedge block are adjusted
Frame, 14- connecting shaft B, 15- connecting shaft A, 16- baffle, 17- bearing block A, 18- forming tubular product device, 19- Hyperbolic Roll axis, 20-
Heart roll shaft, 21- roll side block oil ring, 22- roll side bearing end cap, 23- gasket, 24- aligning roller bearing, 25 opposite side bearing ends
Lid, the opposite side 26- oil scraper ring, 27- locked spacer, 28- round nut, 29- bearing block B, 30- screw rod A, 31- screw rod B, 32- spring,
33- support plate, 34- roll shaft, 35- support base, 36- roller.
Specific embodiment
In Fig. 1 into simplified schematic diagram of the invention shown in fig. 5, tubing former 18 is fixed in gantry base 1, in machine
The two sides on 1 top of frame pedestal are respectively equipped with rack 2, are connected between two racks by four housiung separators 4.Framework pillar 3 is logical
It crosses bolt to be fixed in gantry base, column is set on the rack two roller system support bases 11 are corresponding, roller system support base
Lower part is in contact with the wedge block 12 being fixed on the rack.Distinguish in the two sides on roll axial direction of each wedge block
It is fixed by baffle 16, baffle is bolted in rack.The lower end of wedge block adjusting bracket is bolted on machine
The two sides along roll radial direction of frame, the upper end of wedge block adjusting bracket is equipped with threaded hole, the grafting screw rod A30 in threaded hole,
Screw rod A extends to the outside of wedge-shaped adjusting bracket.It is respectively equipped with groove on two roller system support bases, connecting shaft is equipped in groove
A15, is provided with threaded hole with the corresponding position of groove on roller system support base, and screw rod B31 is plugged in threaded hole, covers on screw rod
Spring 32 is connect, spring is placed in the outside of roller system support base, spring and screw rod B Compositional balance mechanism 10.Roller system support base 11 it is upper
Portion is equipped with through-hole, and through-hole is nested with lead screw 8 to be connected, and lead screw fixed mechanism is hollow column construction, and hollow space is provided with spiral shell
Pit, lead screw fixed mechanism are fastened by bolts on the rack, and lead screw is connected through a screw thread with lead screw fixed mechanism 7, lead screw one
End is pierced by by through-hole above rack, and the lead screw other end is embedded in roller system support base, with connecting shaft A plane contact.One connecting shaft A's
One end is in contact with screw rod B.The other end of one connecting shaft A is connected through a screw thread with bearing block A17, in the inside of bearing block A
One end of grafting Hyperbolic Roll axis 19.It is successively socketed roll side block oil ring 21 on the axial direction of Hyperbolic Roll axis, rolls
Roller side bearing end cap 22, aligning roller bearing 24, opposite side bearing (ball) cover 25, opposite side oil scraper ring 26, locked spacer 27 and round nut
28, roll side block oil ring 21 is stuck on the shaft shoulder and forms oil sealing, roll side bearing end cap 22 and gasket with roll side bearing lid 22
23 are fixed on bearing block A and fix the outer ring of self-aligning roller bearing 24, and the inner ring side of self-aligning roller bearing is fixed on the shaft shoulder
On, the other side is fixed on opposite side bearing (ball) cover 25.The side of opposite side oil scraper ring 26 be stuck on the shaft shoulder and with opposite side bearing cap 25
Oil sealing is formed, opposite side bearing (ball) cover 25 is fixed on bearing block A and the outer ring of fixed self-aligning roller bearing 24.Opposite side oil scraper ring
The other side is threadedly coupled by round nut 28 with locked spacer 27.The other end of another connecting shaft is connected with bearing block B29,
In the inside grafting heart roll shaft 20 of bearing block B.Be connected between bearing block A and bearing block B by connecting shaft B14, bearing block A with
One end of connecting shaft B is connected by bolt, the other end and bearing block B plane contact of connecting shaft B.The machine being connected with bearing block B
Frame top is equipped with arc sheetmetal 6, is equipped with support plate 33 in the top of arc sheetmetal, opens on the supporting plate equipped with rectangle
Mouthful, in the fixed ladle 5 of the opening of support plate, ladle is the shell of upper and lower opening.In Hyperbolic Roll axis and heart roll shaft, close
The end of bearing block A and bearing block B, be arranged a side seal board 9 being threadedly coupled with ladle, Hyperbolic Roll axis it is another
End is fixedly connected with universal shaft, and universal shaft is connected with the output shaft of motor.
In the lower part of Hyperbolic Roll axis and heart roll shaft, the close rack side adjacent with heart roll shaft is equipped with forming tubular product
Device.Forming tubular product device 18 includes support base 34, roll shaft 35 and roller 36.Support base is the channel steel type shell of upper opening, support base
Two sides between by roll shaft be connected, on roll shaft be socketed roller set.
In material, the direction being related to is on the basis of roll mandrel.
Claims (3)
1. a kind of flexible molding device for producing seamless metal pipe mainly includes gantry base, rack, framework pillar, rack cross
Beam, ladle, arc sheetmetal, lead screw fixed mechanism, lead screw, side seal board, balance mechanism, roller system support base, wedge block, wedge block
Adjusting bracket, connecting shaft A, connecting shaft B, baffle, bearing block A, forming tubular product device, Hyperbolic Roll axis, heart roll shaft, roll side block oil
Ring, roll side bearing end cap, gasket, aligning roller bearing, opposite side bearing (ball) cover, opposite side oil scraper ring, locked spacer, round nut,
Bearing block B, screw rod A, screw rod B, spring, support plate, forming tubular product device, it is characterised in that: in the two sides point on gantry base top
Not She You rack, by four housiung separators connections between two racks, framework pillar is bolted in gantry base,
Framework pillar is set on the rack two roller system support bases are corresponding, roller system support base lower part and the wedge being fixed on the rack
Shape block is in contact, and is fixed respectively by baffle in the two sides on roll axial direction of each wedge block, baffle passes through
Bolt is fixed on the rack, and the lower end of wedge block adjusting bracket is bolted on the two sides along roll radial direction of rack,
The upper end of wedge block adjusting bracket is equipped with threaded hole, and the grafting screw rod A in threaded hole, screw rod A extend to the outside of wedge-shaped adjusting bracket,
It is respectively equipped with groove on two roller system support bases, connecting shaft A is equipped in groove, it is corresponding with groove on roller system support base
Position is provided with threaded hole, and screw rod B is plugged in threaded hole, and spring is socketed on screw rod, and spring is placed in the outside of roller system support base,
The top of spring and screw rod B Compositional balance mechanism, roller system support base is equipped with through-hole, and through-hole is nested with lead screw to be connected, and lead screw is fixed
Mechanism is hollow column construction, and hollow space is provided with threaded hole, and lead screw fixed mechanism is fastened by bolts on the rack, lead screw
It is connected through a screw thread with lead screw fixed mechanism, lead screw one end is pierced by by through-hole above rack, and the lead screw other end is embedded in the support of roller system
Seat, is in contact with one end of connecting shaft A plane contact, a connecting shaft A with screw rod B, the other end and bearing block of connecting shaft A
A is connected through a screw thread, in one end of the inside grafting Hyperbolic Roll axis of bearing block A, in the axial direction of Hyperbolic Roll axis
On be successively socketed roll side block oil ring, roll side bearing end cap, aligning roller bearing, opposite side bearing (ball) cover, opposite side oil scraper ring, only
Mobile gasket and round nut, roll side block oil ring are stuck on the shaft shoulder and form oil sealing, roll side bearing end cap with roll side bearing lid
The outer ring on bearing block A and fixing self-aligning roller bearing is fixed on gasket, the inner ring side of self-aligning roller bearing is fixed on axis
On shoulder, the other side is fixed on the bearing (ball) cover of opposite side, and the side of opposite side oil scraper ring is stuck on the shaft shoulder and is formed with opposite side bearing cap
Oil sealing, opposite side bearing (ball) cover is fixed on bearing block A and the outer ring of fixed self-aligning roller bearing, and the other side of opposite side oil scraper ring is logical
It crosses round nut to be threadedly coupled with locked spacer, one end of another connecting shaft A is connected with bearing block B, in the inside of bearing block B
Grafting heart roll shaft, is connected between bearing block A and bearing block B by connecting shaft B, and one end of bearing block A and connecting shaft B pass through spiral shell
Bolt is connected, and the other end and bearing block B plane contact of connecting shaft B, the upper rack being connected with bearing block B are equipped with support plate,
The lower section of support plate is equipped with arc sheetmetal, is equipped with oblong openings on the supporting plate, fixes ladle in the opening of support plate,
In the end of Hyperbolic Roll axis and heart roll shaft, close bearing block A and bearing block B, setting one is threadedly coupled with ladle
Side seal board, the other end of Hyperbolic Roll axis is fixedly connected with universal shaft, and universal shaft is connected with the output shaft of motor, in hyperbolic
The lower part of line roll mandrel and heart roll shaft, the close rack side adjacent with heart roll shaft are equipped with forming tubular product device, and are fixed in
In gantry base.
2. a kind of flexible molding device for producing seamless metal pipe according to claim 1, it is characterised in that: ladle is upper
The shell of opening.
3. a kind of flexible molding device for producing seamless metal pipe according to claim 1, it is characterised in that: forming tubular product
Device includes support base, roll shaft and roller, and support base is the channel steel type shell of upper opening, passes through roll shaft between the two sides of support base
It is connected, roller set is socketed on roll shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311130.5A CN108380832B (en) | 2018-04-09 | 2018-04-09 | A kind of flexible molding device producing seamless metal pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810311130.5A CN108380832B (en) | 2018-04-09 | 2018-04-09 | A kind of flexible molding device producing seamless metal pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108380832A CN108380832A (en) | 2018-08-10 |
| CN108380832B true CN108380832B (en) | 2019-09-27 |
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ID=63073593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810311130.5A Active CN108380832B (en) | 2018-04-09 | 2018-04-09 | A kind of flexible molding device producing seamless metal pipe |
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| Country | Link |
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| CN (1) | CN108380832B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109465799A (en) * | 2019-01-02 | 2019-03-15 | 河北丰禾生物科技股份有限公司 | Equalising torque pay off rack |
| CN111112564B (en) * | 2019-11-26 | 2021-03-23 | 燕山大学 | Flexible forming method of seamless fiber reinforced metal-based composite pipe |
| CN115106494B (en) * | 2022-05-27 | 2023-08-18 | 燕山大学 | Flexible forming device and method for spiral groove pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776298A (en) * | 1971-07-02 | 1973-12-04 | Mannesmann Ag | Apparatus for controlling the pressure force in multi-roll drives for equipment withdrawing an ingot from a continuous casting machine along a curved path |
| JPS57137058A (en) * | 1981-02-18 | 1982-08-24 | Nippon Steel Corp | Nozzle protecting device in producing device for amorphous alloy strip |
| JPS57139452A (en) * | 1981-02-23 | 1982-08-28 | Nippon Yakin Kogyo Co Ltd | Production of metallic and other similar fibers |
| JPS59130654A (en) * | 1983-01-14 | 1984-07-27 | Hitachi Ltd | Device for producing fine wire |
| CN105149556A (en) * | 2015-08-03 | 2015-12-16 | 燕山大学 | Solid-liquid composite cast rolling machine for dual-metal-layer composite pipe |
-
2018
- 2018-04-09 CN CN201810311130.5A patent/CN108380832B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776298A (en) * | 1971-07-02 | 1973-12-04 | Mannesmann Ag | Apparatus for controlling the pressure force in multi-roll drives for equipment withdrawing an ingot from a continuous casting machine along a curved path |
| JPS57137058A (en) * | 1981-02-18 | 1982-08-24 | Nippon Steel Corp | Nozzle protecting device in producing device for amorphous alloy strip |
| JPS57139452A (en) * | 1981-02-23 | 1982-08-28 | Nippon Yakin Kogyo Co Ltd | Production of metallic and other similar fibers |
| JPS59130654A (en) * | 1983-01-14 | 1984-07-27 | Hitachi Ltd | Device for producing fine wire |
| CN105149556A (en) * | 2015-08-03 | 2015-12-16 | 燕山大学 | Solid-liquid composite cast rolling machine for dual-metal-layer composite pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108380832A (en) | 2018-08-10 |
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Effective date of registration: 20220712 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 066004 No. 438 west section of Hebei Avenue, seaport District, Hebei, Qinhuangdao Patentee before: Yanshan University |
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Effective date of registration: 20221221 Address after: No. 2, Tianxing Road, Pingshan Industrial Park, Wansheng Economic Development Zone, Qijiang District, Chongqing 400899 Patentee after: Chongqing Shenggang Industrial Co.,Ltd. Address before: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee before: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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