CN210974748U - Turnover semi-steel ladle temperature measurement sampling device - Google Patents
Turnover semi-steel ladle temperature measurement sampling device Download PDFInfo
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- CN210974748U CN210974748U CN201921315977.7U CN201921315977U CN210974748U CN 210974748 U CN210974748 U CN 210974748U CN 201921315977 U CN201921315977 U CN 201921315977U CN 210974748 U CN210974748 U CN 210974748U
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Abstract
The utility model provides a semisteel ladle temperature measurement sampling device that can overturn, belongs to converter steelmaking equipment technical field for carry out automatic temperature measurement and sample to the semisteel. The technical scheme is as follows: two bearing frames are fixedly connected to the steel beam base respectively, the two ends of the turnover shaft are connected with the bearing frames through turnover bearings respectively, one end of the turnover shaft is connected with the turnover shaft driving device, the middle of the gun rack is perpendicularly connected with the turnover shaft, the temperature measuring gun and the sampling gun are respectively and fixedly connected to the front end of the gun rack, and the gun rack rotating device is installed at the rear end of the gun rack. The utility model discloses simple structure, convenient to use, the stack can overturn sample and temperature measurement, can follow the rotation of stack axis of ordinates simultaneously, conveniently changes sampler and temperature measurement idol head, has saved the space, and easily operation can carry out temperature measurement and sample to the semisteel simultaneously, has avoided the data error because of manual operation leads to improve work efficiency, reduced operating personnel's intensity of labour, eliminated the potential safety hazard, there is fabulous using value in industry.
Description
Technical Field
The utility model relates to a semisteel ladle temperature measurement sampling device belongs to converter steelmaking equipment technical field.
Background
In iron and steel enterprises, the duplex vanadium extraction and steel making are an important method widely adopted in a plurality of molten iron vanadium extraction processes. The method adopts two converters for production, one converter is a vanadium extraction converter, a movable or fixed spray gun is adopted to blow in pure oxygen or air, a nozzle of the spray gun blows in from the top, the bottom or the side of the converter, high-speed oxygen jet flow is utilized to stir molten iron containing vanadium, vanadium in the molten iron is oxidized into stable vanadium oxide to prepare vanadium slag, then the vanadium slag is recovered, and semisteel is moved to the other converter for slagging and steelmaking. The method can obtain high-quality vanadium slag with industrial application value.
Generally, the temperature of the semisteel is measured and sampled after the semisteel is smelted, whether the control of the vanadium extraction process is reasonable and the residual vanadium of the semisteel is higher can be separated by integrating the temperature of the semisteel and the components of the semisteel, and then the steelmaking cold burden is reasonably matched according to the physical heat and the chemical heat of the semisteel, so that the temperature measurement and sampling provide important reference for the steelmaking process.
The semisteel sampling and temperature measurement need to be timely and accurate so as to provide better service for the next procedure. Under the conventional conditions, temperature measurement sampling needs manual operation, but the manual temperature measurement sampling causes some disadvantages due to human factors: firstly, the temperature measurement and oxygen lance insertion point position and insertion depth are difficult to meet the specified requirements; secondly, the manual temperature measurement is long in heating time, so that the stability of the temperature measurement is deteriorated, and the accuracy of data is influenced; moreover, sample components obtained in a manual sampling mode fluctuate, and the bad sample rate is high; finally, the labor intensity of manual temperature measurement and sampling is high, the environment is severe and dangerous, and the personal safety and the body health of operators are threatened. Along with the development of production, the automatic temperature measurement sampling device also obtains application in production, but in use, finds that the existing automatic temperature measurement sampling device still has some shortcomings: firstly, the temperature measurement sampling device is completely exposed on the ladle treatment surface in standby, and is seriously subjected to heat radiation, so that the service life of the device is shortened; secondly, the probe of the automatic temperature measurement sampling gun is difficult to install, the working face of a worker is very close to the edge of a ladle, the environment is severe, and personal safety risks exist; thirdly, the same gun body is adopted for temperature measurement and sampling, only one work (temperature measurement or sampling) can be completed each time, and the working efficiency is low; fourthly, the existing automatic temperature measuring and sampling device has a complex structure and occupies a large space.
In summary, the existing manual temperature measurement sampling state and the existing automatic temperature measurement sampling device are not suitable for the needs of production and development, so that the design of a safe, convenient, simple and space-saving automatic temperature measurement sampling device becomes a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a half ladle temperature measurement sampling device that can overturn is provided, this kind of half ladle temperature measurement sampling device can carry out temperature measurement and sample simultaneously to half ladle, avoids because the data error that manual operation leads to, can improve work efficiency, reduce operating personnel's intensity of labour, eliminate the potential safety hazard simultaneously.
The technical scheme for solving the technical problems is as follows:
the utility model provides a half ladle temperature measurement sampling device that can overturn, it includes the girder steel base, the bearing frame, the upset bearing, the trip shaft, trip shaft drive arrangement, the temperature measurement rifle, the sampling rifle, the stack rotating device, two bearing frame fixed connection are respectively on the girder steel base, the trip shaft both ends are connected through the upset bearing with the bearing frame respectively, the one end of trip shaft is connected with trip shaft drive arrangement, the middle part and the trip shaft of stack are perpendicular to be connected, temperature measurement rifle and sampling rifle are erection joint respectively at the front end of stack, the stack rotating device is installed to the rear end of stack.
The turnover semisteel ladle temperature measurement sampling device is characterized in that the turnover shaft driving device is composed of a driving motor, a driving reducer, a pinion and a gearwheel, the driving motor is connected with the driving reducer, the driving motor and the driving reducer are fixed on a steel beam base, an output shaft of the driving reducer is connected with a gear shaft of the pinion through a coupling, the pinion is meshed with the gearwheel, and the gearwheel is mounted at one end of the turnover shaft.
The turnover semi-steel ladle temperature measurement sampling device comprises a gun rack, a gun rack and a turnover mechanism, wherein the gun rack comprises an outer sleeve, a rotating shaft, a front sleeve, a rotating bearing and a flange, the middle part of the outer wall of the outer sleeve is vertically connected with a turnover shaft, the rotating shaft is positioned in the outer sleeve, the inner wall of the rotating shaft and the inner wall of the outer sleeve are connected through the rotating bearing, the front end of the rotating shaft extends out of the front end of the outer sleeve, the front end of the rotating shaft is inserted into an inner hole in the rear part of the front sleeve and is connected through a bolt, a temperature measurement gun and a sampling gun are connected with the front.
Above-mentioned semisteel ladle temperature measurement sampling device that can overturn, the stack rotating device comprises rotation motor, rotation reduction gear, axle sleeve, and the hole of axle sleeve is the shoulder hole, and axle sleeve hole upper portion diameter is greater than the lower part diameter, rotates the motor and is connected with the rotation reduction gear, and the reduction gear axle of rotating the reduction gear passes flange hole and axle sleeve lower part hole through the key-type connection, and the external diameter of axis of rotation and the upper portion diameter phase-match of axle sleeve hole, and the axis of rotation is connected with the axle sleeve hole in inserting the axle sleeve hole.
Above-mentioned half ladle temperature measurement sampling device that can overturn, the hole front end of outer sleeve is major diameter's shoulder hole, the embedding of rolling bearing periphery is in the shoulder hole, rolling bearing's bottom surface is located ladder department, rolling bearing's top has the end cover, the embedding of end cover circumference is in outer sleeve upper end shoulder hole, the upper surface at rolling bearing is pushed up to the end cover lower extreme, end cover central authorities have the end cover hole, the diameter in end cover hole and the external diameter phase-match of axis of rotation, the axis of rotation passes the end cover hole, axis of rotation and end cover hole are sliding fit.
Above-mentioned half ladle temperature measurement sampling device that can overturn, the axis of rotation is hollow sleeve axle, has the screw on the sleeve outer wall of axis of rotation upper end, has corresponding connecting hole on the preceding sleeve rear portion inner wall, and the bolt passes preceding sheathed tube connecting hole and is connected with the screw of axis of rotation, has the screw thread on the sleeve outer wall of axis of rotation lower extreme, has corresponding screw thread on the interior pore wall on axle sleeve upper portion, and the outer wall screw thread of axis of rotation lower extreme is connected with axle sleeve inner hole wall screw thread, has jackscrew and rotation axle top fastening on the axle sleeve outer wall.
According to the turnover semi-steel ladle temperature measurement sampling device, the protective plate is mounted on the periphery of the front sleeve of the gun rack, and refractory cotton is filled in a gap between the protective plate and the front sleeve.
The utility model has the advantages that:
the driving motor of the utility model drives the gun rack to rotate back and forth through the turnover shaft, so that the temperature measuring gun and the sampling gun at the front end of the gun rack enter the semi-steel ladle to measure and sample the semi-steel; the front end of the gun rack is provided with a temperature measuring gun and a sampling gun, and a temperature measuring couple head and a sampler can be simultaneously arranged; the rotating motor at the rear end of the gun rack can enable the temperature measuring gun and the sampling gun at the front end of the gun rack to rotate along the longitudinal axis of the gun rack through the rotating shaft, so that the sampler and the temperature measuring thermocouple head can be conveniently replaced; the guard plate can prevent high temperature from producing hot corrosion to the front end of the gun rack when temperature measurement is carried out, and the service life of equipment is prolonged.
The utility model has the advantages of being simple in structure and convenient in use, the stack can overturn sample and temperature measurement, can conveniently change sampler and temperature measurement idol head along stack axis of ordinates rotation simultaneously, the space has been saved, easily operation can carry out temperature measurement and sample to the semisteel simultaneously, avoided the data error because of manual operation leads to, and improved work efficiency, reduced worker's intensity of labour, eliminated the potential safety hazard, can replace current automatic temperature measurement sampling device, there is fabulous using value in industry.
Drawings
Fig. 1 is a schematic structural diagram of the present invention. (preferably, a side view is added)
The figures are labeled as follows: the device comprises a steel beam base 1, a bearing seat 2, a turnover bearing 3, a turnover shaft 4, a gun rack 5, a temperature measuring gun 6, a sampling gun 7, a driving motor 8, a driving reducer 9, a pinion 10, a gearwheel 11, an outer sleeve 12, a rotating shaft 13, a front sleeve 14, a rotating bearing 15, a flange 16, a rotating motor 17, a rotating reducer 18, a shaft sleeve 19, an end cover 20, a key 21, a bolt 22 and a protection plate 23.
Detailed Description
The utility model discloses constitute by girder steel base 1, bearing frame 2, upset bearing 3, trip shaft 4, stack 5, temperature measurement rifle 6, sampling gun 7 and trip shaft drive arrangement, stack rotating device.
The figure shows that two bearing seats 2 are respectively fixedly connected on a steel beam base 1, a turnover bearing 3 is installed in the bearing seats 2, two ends of a turnover shaft 4 are respectively connected with the turnover bearing 3, one end of the turnover shaft 4 is connected with a turnover shaft driving device, and the turnover shaft driving device drives the turnover shaft 4 to rotate in the turnover bearing 3.
The middle part of a gun frame 5 is vertically connected with a turnover shaft 4, a temperature measuring gun 6 and a sampling gun 7 are respectively and fixedly connected with the front end of the gun frame 5, the temperature measuring gun 6 and the sampling gun 7 respectively and vertically form an included angle of 90 degrees with the gun frame 5, and a temperature measuring thermocouple head and a sampler are simultaneously arranged. The temperature measuring gun 6 is used for measuring the temperature of the semisteel in the semisteel ladle, and the sampling gun 7 is used for sampling the semisteel, so that temperature measurement and sampling can be synchronously completed. The rear end of the gun rack 5 is provided with a gun rack rotating device. The gun rack rotating device can enable the temperature measuring gun 6 and the sampling gun 7 at the front end of the gun rack 5 to rotate along the longitudinal axis of the gun rack 5, so that the sampler and the temperature measuring thermocouple head can be conveniently replaced.
The figure shows that the overturning shaft driving device consists of a driving motor 8, a driving reducer 9, a pinion 10 and a bull gear 11. The driving motor 8 is connected with the driving reducer 9, the driving motor 8 and the driving reducer 9 are fixed on the steel beam base 1, an output shaft of the driving reducer 9 is connected with a gear shaft of the small gear 10 through a coupler, the small gear 10 is meshed with the large gear 11, and the large gear 11 is installed at one end of the turnover shaft 4. The overturning shaft 4 can realize slow swing by driving the reducer 9 and the bull gear 11 to reduce speed in two stages, so that the temperature measuring gun 6 and the sampling gun 7 stably enter the semi-ladle for sampling and temperature measurement.
The gun rest 5 is shown to comprise an outer sleeve 12, a rotary shaft 13, a front sleeve 14, a rotary bearing 15, a flange 16. The middle part of the outer wall of the outer sleeve 12 is vertically connected with the turning shaft 4, the rotating shaft 13 is positioned in the outer sleeve 12, the rotating shaft 13 is connected with the inner wall of the outer sleeve 12 through a rotating bearing 15, the front end of the rotating shaft 13 extends out of the front end of the outer sleeve 12, the front end of the rotating shaft 13 is inserted into an inner hole in the rear part of the front sleeve 14 and is connected through a bolt 22, the temperature measuring gun 6 and the sampling gun 7 are connected with the front end of the front sleeve 14, the rear end of the outer sleeve 12 is connected with a flange 16, and the gun rack rotating device is. The outer sleeve 12 of the gun rack 5 can rotate along with the overturning shaft 4, and meanwhile, the rotating shaft 13 can rotate in the outer sleeve 12, so that the temperature measuring gun 6 and the sampling gun 7 at the front end of the front sleeve 14 rotate along the longitudinal axis of the gun rack 5, and the sampler and the temperature measuring thermocouple head are convenient to replace.
In the above connection structure, the front end of the inner hole of the outer sleeve 12 is a stepped hole with a large diameter, the periphery of the rotating bearing 15 is embedded in the stepped hole, the bottom surface of the rotating bearing 15 is located at the step, an end cover 20 is arranged above the rotating bearing 15, the circumference of the end cover 20 is embedded in the stepped hole at the upper end of the outer sleeve 12, the lower end of the end cover 20 is pressed against the upper surface of the rotating bearing 15, an end cover hole is arranged at the center of the end cover 20, the diameter of the end cover hole is matched with the outer diameter of the rotating shaft 13, the rotating shaft 13 passes through the end cover hole, and the rotating shaft 13 is in sliding fit with.
In the figure, it is shown that, in order to reduce the weight, the rotating shaft 13 is a hollow sleeve shaft, the outer wall of the sleeve at the upper end of the rotating shaft 13 is provided with a screw hole, the inner wall of the rear part of the front sleeve 14 is provided with a corresponding connecting hole, and a bolt 22 passes through the connecting hole of the front sleeve 14 to be connected with the screw hole of the rotating shaft 13.
The gun rest rotating device is shown to be composed of a rotating motor 17, a rotating speed reducer 18 and a shaft sleeve 19. The inner hole of the shaft sleeve 19 is a stepped hole, the diameter of the upper part of the inner hole of the shaft sleeve is larger than that of the lower part, the rotating motor 17 is connected with the rotating speed reducer 18, and the speed reducer shaft of the rotating speed reducer 18 penetrates through the flange hole of the flange 16 at the rear end of the outer sleeve 12 to be connected with the inner hole of the lower part of the shaft sleeve 19 through a key 21. The upper diameter of 19 hole of axle sleeve and the external diameter phase-match of axis of rotation 13, there is the screw thread on the sleeve outer wall of axis of rotation 13 lower extreme, has corresponding screw thread on the interior pore wall on 19 upper portions of axle sleeve, and the outer wall screw thread of 13 lower extremes of axis of rotation is connected with 19 interior pore wall screw threads of axle sleeve, has jackscrew and 13 tight fixed in top of axis of rotation on the 19 outer wall of axle sleeve, prevents that the threaded connection with axle sleeve 19 is not hard up when axis of rotation 13.
In the figure, a protective plate 23 is arranged on the periphery of the front sleeve 14 of the gun rack 5, and refractory cotton is filled in the gap between the protective plate 23 and the front sleeve 14. The protective plate 23 and the refractory cotton can prevent high temperature from generating hot corrosion to the front end of the gun rack 5 during temperature measurement sampling, and the service life of equipment is prolonged.
The working process of the utility model is as follows:
respectively installing a temperature measuring gun 6 and a sampling gun 7 at the front end of a gun frame 5, wherein the temperature measuring gun 6 and the sampling gun 7 respectively form an included angle of 90 degrees with the gun frame 5 in a vertical manner, and meanwhile, installing a temperature measuring thermocouple and a sampler, wherein the temperature measuring gun 6 is used for measuring the temperature of semisteel in a semisteel ladle, and the sampling gun 7 is used for sampling the semisteel;
starting a rotating motor 17 at the rear end of the gun rack 5 to enable the gun rack 5 to rotate along the longitudinal axis, and aligning the temperature measuring gun 6 and the sampling gun 7 at the front end of the gun rack 5 to the direction of the half ladle;
the driving motor 8 is started to rotate the turnover shaft 4, the turnover shaft 4 is decelerated in two stages by driving the reducer 9 and the bull gear 11, and the gun rack 5 can swing slowly until temperature measuring thermocouple heads and samplers of the temperature measuring gun 6 and the sampling gun 7 extend into the semisteel liquid level for sampling and temperature measuring;
after temperature measurement and sampling are finished, the motor 8 is driven to rotate reversely, the turnover shaft 4 rotates reversely, the gun rack 5 is lifted, and the temperature measurement gun 6 and the sampling gun 7 leave the liquid level of the semi-ladle and return to the standby position;
and starting a rotating motor 17 at the rear end of the gun rack 5 to rotate the gun rack 5, enabling the temperature measuring gun 6 and the sampling gun 7 at the front end of the gun rack 5 to face the direction of an operator, and replacing the temperature measuring thermocouple head and the sampler by the operator to finish a temperature measuring and sampling period.
The utility model discloses an embodiment as follows:
the turnover bearing 3 is a 7306 angular contact ball bearing;
the diameter of the turning shaft 4 is 40mm, and the length of the turning shaft is 190mm of the driving side shaft; a traveling side shaft is 150 mm;
the model of the temperature measuring head of the temperature measuring gun 6 is TC 1200B-Al;
the sampler model of the sampling gun 7 is KQN-600;
the type of the driving motor 8 is an electromagnetic braking type three-phase asynchronous motor YEJ-0.75 KW;
the type of the driving reducer 9 is a reducer TR 38;
the diameter of the pinion 10 is 70 mm;
the diameter of the bull gear 11 is 154 mm;
the outer sleeve 12 has a diameter of 88mm and a length of 300 mm;
the diameter of the rotating shaft 13 is 40mm, and the length is 280 mm;
the diameter of the front sleeve 14 is 45mm, and the length is 3500 mm;
the model number of the rotating bearing 15 is 6307;
the model of the rotating motor 17 is YEJ 0.5.5 KW;
the model of the rotary speed reducer 18 is TRF18, and the weight is 5.5 kg;
the diameter of the shaft sleeve 19 is 55mm, and the length is 60 mm;
the diameter of the bolt 22 is M12 × 25 mm;
the guard plate 23 is 3mm thick and 1800mm high.
Claims (7)
1. The utility model provides a half ladle temperature measurement sampling device that can overturn which characterized in that: it includes girder steel base (1), bearing frame (2), upset bearing (3), trip shaft (4), trip shaft drive arrangement, thermometer gun (6), sample rifle (7), gun rack (5), gun rack rotating device, two bearing frame (2) fixed connection respectively are on girder steel base (1), trip shaft (4) both ends are connected through upset bearing (3) with bearing frame (2) respectively, the one end of trip shaft (4) is connected with trip shaft drive arrangement, the middle part and the trip shaft (4) of gun rack (5) are connected perpendicularly, thermometer gun (6) and sample rifle (7) are erection joint respectively in the front end of gun rack (5), gun rack rotating device is installed to the rear end of gun rack (5).
2. The reversible semi-ladle temperature measurement sampling device according to claim 1, characterized in that: the turnover shaft driving device is composed of a driving motor (8), a driving reducer (9), a pinion (10) and a gearwheel (11), the driving motor (8) is connected with the driving reducer (9), the driving motor (8) and the driving reducer (9) are fixed on a steel beam base (1), an output shaft of the driving reducer (9) is connected with a gear shaft of the pinion (10) through a coupler, the pinion (10) is meshed with the gearwheel (11), and the gearwheel (11) is installed at one end of the turnover shaft (4).
3. The reversible semi-ladle temperature measurement sampling device according to claim 1, characterized in that: the gun rack (5) comprises an outer sleeve (12), a rotating shaft (13), a front sleeve (14), a rotating bearing (15) and a flange (16), the middle part of the outer wall of the outer sleeve (12) is vertically connected with the turnover shaft (4), the rotating shaft (13) is positioned in the outer sleeve (12), the rotating shaft (13) is connected with the inner wall of the outer sleeve (12) through the rotating bearing (15), the front end of the rotating shaft (13) extends out of the front end of the outer sleeve (12), the front end of the rotating shaft (13) is inserted into an inner hole in the rear part of the front sleeve (14) and is connected with the inner hole through a bolt (22), a temperature measuring gun (6) and a sampling gun (7) are vertically connected with the front end of the front sleeve (14), the rear end of the outer sleeve (12) is connected with the flange (16), and a gun rack.
4. The reversible semi-ladle temperature measurement sampling device according to claim 1, characterized in that: the gun rack rotating device is composed of a rotating motor (17), a rotating speed reducer (18) and a shaft sleeve (19), wherein the inner hole of the shaft sleeve (19) is a stepped hole, the diameter of the upper part of the inner hole of the shaft sleeve (19) is larger than that of the lower part of the inner hole of the shaft sleeve (19), the rotating motor (17) is connected with the rotating speed reducer (18), a speed reducer shaft of the rotating speed reducer (18) penetrates through a flange hole to be connected with the inner hole of the lower part of the shaft sleeve (19) through a key (21), the outer diameter of a rotating shaft (13) is matched with the diameter of the upper part of the inner hole of the shaft sleeve (19), and.
5. The reversible semi-ladle temperature measurement sampling device according to claim 3, wherein: the hole front end of outer sleeve (12) is major diameter's shoulder hole, rolling bearing (15) periphery embedding is in the shoulder hole, the bottom surface of rolling bearing (15) is located ladder department, there is end cover (20) above rolling bearing (15), end cover (20) circumference embedding is in outer sleeve (12) upper end shoulder hole, end cover (20) lower extreme top is at the upper surface of rolling bearing (15), end cover (20) central authorities have the end cover hole, the diameter in end cover hole and the external diameter phase-match of axis of rotation (13), the end cover hole is passed in axis of rotation (13), axis of rotation (13) and end cover hole are sliding fit.
6. The reversible semi-ladle temperature measurement sampling device according to claim 5, characterized in that: the axis of rotation (13) is hollow sleeve axle, there is the screw on the sleeve outer wall of axis of rotation (13) upper end, there is corresponding connecting hole on preceding sleeve pipe (14) rear portion inner wall, bolt (22) pass the connecting hole of preceding sleeve pipe (14) and are connected with the screw hole of axis of rotation (13), there is the screw thread on the sleeve outer wall of axis of rotation (13) lower extreme, there is corresponding screw thread on the interior pore wall on axle sleeve (19) upper portion, the outer wall screw thread of axis of rotation (13) lower extreme is connected with axle sleeve (19) interior pore wall screw thread, it is fixed with axis of rotation (13) top tightly to have the jackscrew on axle sleeve (19.
7. The reversible semi-ladle temperature measurement sampling device according to claim 6, characterized in that: the protective plate (23) is installed on the periphery of the front sleeve (14) of the gun rack (5), and refractory cotton is filled in a gap between the protective plate (23) and the front sleeve (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921315977.7U CN210974748U (en) | 2019-08-14 | 2019-08-14 | Turnover semi-steel ladle temperature measurement sampling device |
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| CN201921315977.7U CN210974748U (en) | 2019-08-14 | 2019-08-14 | Turnover semi-steel ladle temperature measurement sampling device |
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| CN210974748U true CN210974748U (en) | 2020-07-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110607414A (en) * | 2019-08-14 | 2019-12-24 | 河钢股份有限公司承德分公司 | Turnover semi-steel ladle temperature measurement sampling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110607414A (en) * | 2019-08-14 | 2019-12-24 | 河钢股份有限公司承德分公司 | Turnover semi-steel ladle temperature measurement sampling device |
| CN110607414B (en) * | 2019-08-14 | 2024-04-09 | 河钢股份有限公司承德分公司 | Turnover semisteel ladle temperature measurement sampling device |
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