CN218506922U - Automatic cleaning system for surface of roller way of heat treatment furnace - Google Patents
Automatic cleaning system for surface of roller way of heat treatment furnace Download PDFInfo
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- CN218506922U CN218506922U CN202222459653.9U CN202222459653U CN218506922U CN 218506922 U CN218506922 U CN 218506922U CN 202222459653 U CN202222459653 U CN 202222459653U CN 218506922 U CN218506922 U CN 218506922U
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Abstract
The embodiment of the application provides an automatic cleaning system of heat treatment furnace roller table surface, it rotates to drive the roll table through the motor, realize the transport of steel sheet, the current position of rethread metal detection element detection steel sheet, the controller is according to the parameter determination current motor rotational speed of current roll table converter, then confirm the rotational speed of roll table, the transport speed of steel sheet is confirmed according to the rotational speed of roll table again, thereby grasp the position that the steel sheet breaks away from behind the metal detection element detection area in real time, the user sets for operating parameter such as the rotational speed of motor and/or turning to through the host computer, the controller corresponds the motor operating parameter that the position that adjusts the steel sheet and is located corresponds, make sliding friction produce between roll table and the steel sheet, under the effect of friction force, can get rid of the adnexed metal oxide of roll table surface, can realize the automatic clearance of roll table surface, for traditional clearance mode, need not shut down, the normal production processing of steel sheet is not influenced, and the expense input is low.
Description
Technical Field
The application relates to the technical field of heat treatment, in particular to an automatic cleaning system for the surface of a roller way of a heat treatment furnace.
Background
The heat treatment is an important component in the production of steel plates, can not only change the processing performance of the steel plates when in use, but also obviously improve the mechanical property, therefore, the heat treatment is one of important ways for improving the product quality in the steel industry, and is particularly important as a heat treatment furnace of heat treatment heating equipment.
The heat treatment furnace generally comprises a furnace body, a roller way, combustion equipment and the like. Because the heat treatment furnace is generally used for continuous production, and the furnace is in a high-temperature environment, metal oxides are easily generated on the metal surface, when the roller way conveys the steel plate, part of the metal oxides are attached to the roller way to influence the surface smoothness of the roller way, some metal oxides can even stick to the steel plate which is subsequently subjected to heat treatment, even indentations are generated on the steel plate, and certain influence is generated on the surface quality of the steel plate.
Once the above situation occurs, the roller way needs to be cleaned, for example, if there are many metal oxides attached to the roller way, the roller way may need to be replaced by stopping the machine, which not only affects the normal production, but also increases the cost required for replacing the roller way.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides an automatic cleaning system for the surface of a roller way of a heat treatment furnace, which can clean the roller way in the heat treatment furnace on the premise of not influencing normal production, and has low cleaning cost.
The embodiment of the application provides an automatic clearance system in heat treatment furnace roll table surface, includes: the device comprises an upper computer, a controller, a roller way frequency converter, a motor and a metal detection element;
the motor is electrically connected with the roller way frequency converter, the motor is connected with the roller way, the motor is used for driving the roller way to rotate, and the roller way frequency converter is used for adjusting working parameters of the motor so as to change the rotating speed and/or the steering of the motor;
the utility model discloses a metal detection element, including controller, metal detection element, controller, upper computer, roller table converter, controller, upper computer, controller and upper computer electric connection, the controller be used for receiving the position of the steel sheet of metal detection element transmission, the upper computer is located the position of the steel sheet of controller transmission, and to the controller sends that the steel sheet place roller table corresponds the control parameter of predetermineeing of roller table converter, the controller is used for adjusting the roller table converter extremely predetermine the control parameter, has in order to control at least one in the motor that the roller table of steel sheet corresponds with predetermineeing working parameter work.
In one possible implementation, the metal detection element includes a cold metal detector and a hot metal detector;
the cold metal detector is arranged in front of the heat treatment furnace and is used for detecting the position of a steel plate in front of the heat treatment furnace;
the hot metal detector is arranged in the heat treatment furnace and is used for detecting the position of a steel plate in the heat treatment furnace;
the cold metal detector and the hot metal detector are both electrically connected with the controller.
In a feasible implementation manner, the number of the roller ways is multiple, correspondingly, the number of the motors is multiple, and the number of the motors is the same as that of the roller ways and is connected in a one-to-one correspondence manner;
the quantity of roll table converter with the quantity of motor is the same and the one-to-one is connected, and is a plurality of the roll table converter all with controller electric connection.
In a possible implementation, the width of the steel plate is the same as the axial length of the roller table.
In a possible implementation manner, the minimum length of the steel plate is the sum of the distance between every two consecutive four roller ways and the diameter of the four roller ways.
In one possible implementation, the upper computer is an HMI upper computer.
In one possible implementation, the controller is a PLC controller.
The embodiment of the application provides a pair of automatic cleaning system of heat treatment furnace roller table surface, it rotates to drive the roll table through the motor, realize the transport of steel sheet, the current position of rethread metal detection element detection steel sheet, the controller is according to the parameter determination current motor rotational speed of current roll table converter, then confirm the rotational speed of roll table, the transport speed of steel sheet is confirmed according to the rotational speed of roll table again, thereby grasp the position that the steel sheet breaks away from behind the metal detection element detection area in real time, the user sets for operating parameters such as the rotational speed of motor and/or turning to through the host computer, the controller corresponds the motor operating parameter that the position that adjusts the steel sheet and is located corresponds, make sliding friction produce between roll table and the steel sheet, under the effect of friction force, can get rid of roll table surface's attached metal oxide, can realize the automatic clearance of roll table surface, for traditional clearance mode, need not shut down, the normal production processing of steel sheet is not influenced, and the expense input is low.
Drawings
FIG. 1 is a schematic view of a first structure of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of a second structure of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure;
FIG. 3 is a schematic view illustrating a state of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure;
fig. 4 is an enlarged view of a partial top view of fig. 3.
Description of reference numerals:
1-a motor; 2-roller bed frequency converter; 3-a controller; 4-an upper computer; 5-a metal detection element; 6-steel plate; 7-roller bed;
101-a first motor; 102-a second electric machine; 103-a third motor; 1 n-nth motor;
201-a first roller bed frequency converter; 202-a second roller frequency converter; 203-a third three-roller frequency converter; 2 n-nth roller bed frequency converter;
51-a cold metal detector; 52-a hot metal detector;
701-a first roller bed; 702-a second roller table; 703-a third roller bed; 7 n-nth roller bed.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The continuous production of the heat treatment furnace often causes metal oxides to be generated on the metal surface, when a steel plate is conveyed, the lower surface of the steel plate is in contact with the periphery of a roller way, partial metal oxides on the surface of the steel plate are adhered to the periphery of the roller way under the action of the self gravity of the steel plate, so that the periphery of the roller way becomes uneven, when the roller way with uneven peripheral recesses conveys other steel plates, the metal oxides adhered to the periphery of the roller way can be transferred to other steel plates, the surface smoothness of the steel plates is influenced, some metal oxides with large adhesion acting force cannot fall off from the roller way, even indentations can be formed on the surface of the steel plate during heat treatment or after heat treatment, and the quality of the steel plate is seriously influenced.
At present, the metal oxide roller way is mostly dismantled and a replacement roller way is installed to avoid the problems, but the production and processing efficiency of the steel plate is seriously influenced by the mode, and the temperature in a heat treatment furnace is higher and the operation is inconvenient.
In order to solve the problems, the application provides an automatic cleaning system for the roller way surface of the heat treatment furnace, which can carry out heat treatment on a steel plate and conveying the steel plate as usual, on the premise of not influencing the production and processing of the steel plate.
FIG. 1 is a schematic view of a first structure of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure; FIG. 2 is a schematic view of a second structure of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure; FIG. 3 is a schematic view illustrating a state of an automatic cleaning system for a surface of a roller bed of a heat treatment furnace according to an embodiment of the present disclosure; fig. 4 is an enlarged view of a partial top view of fig. 3. Referring to fig. 1, an embodiment of the present application provides an automatic cleaning system for a surface of a roller way of a heat treatment furnace, including: the device comprises an upper computer 4, a controller 3, a roller way frequency converter 2, a motor 1 and a metal detection element 5.
The motor 1 is electrically connected with the roller way frequency converter 2, the motor 1 is connected with the roller way 7, the motor 1 is used for driving the roller way 7 to rotate, and the roller way frequency converter 2 is used for adjusting the working parameters of the motor 1 so as to change the rotating speed and/or the steering direction of the motor 1;
the metal detection element 5 and the roller bed frequency converter 2 are both electrically connected with the controller 3, the metal detection element 5 is used for detecting the position of the steel plate 6, the controller 3 is electrically connected with the upper computer 4, and the controller 3 is used for receiving the position of the steel plate 6 transmitted by the metal detection element 5.
The upper computer 4 is used for receiving the position of the steel plate 6 transmitted by the controller 3, sending preset control parameters of the roller way frequency converter 2 corresponding to the roller way 7 where the steel plate 6 is located to the controller 3, and the controller 3 is used for adjusting the roller way frequency converter 2 to the preset control parameters so as to control at least one of the motors 1 corresponding to the roller way 7 with the steel plate 6 to work according to the preset working parameters.
For example, after the upper computer 4 is started, a user presets control parameters of the roller way frequency converter 2 through the upper computer 4 and sends the control parameters to the controller 3, the controller 3 receives the control parameters and adjusts the roller way frequency converter 2 to preset control parameters, the roller way frequency converter 2 controls the corresponding motor 1 to change the rotating speed and/or the steering direction, and therefore the control parameters are distinguished from the working states of other motors, so that the roller way 7 corresponding to the motor 1 which changes the rotating speed and/or the steering direction and the steel plate 6 slide relatively, and metal oxides on the surface of the roller way 7 are removed through the sliding friction force between the steel plate 6 and the roller way 7.
The embodiment of the application provides an automatic cleaning system for roller way surfaces of heat treatment furnaces, the roller way 7 is driven to rotate through the motor 1, the conveying of a steel plate 6 is achieved, the current position of the steel plate 6 is detected through the metal detection element 5, the controller 3 determines the current rotating speed of the motor 1 according to the current parameters of the roller way frequency converter 2, then determines the rotating speed of the roller way 7, and determines the conveying speed of the steel plate 6 according to the rotating speed of the roller way 7, so that the position of the steel plate 6 after being separated from the detection area of the metal detection element 5 is mastered in real time, a user sets the rotating speed and/or steering and other working parameters of the motor 1 through the upper computer 4, the controller 3 correspondingly adjusts the working parameters of the motor 1 corresponding to the position of the steel plate 6, sliding friction is generated between the roller way 7 and the steel plate 6, metal oxides attached to the surfaces of the roller way 7 can be removed under the action of friction force, the automatic cleaning of the surfaces of the roller way 7 can be achieved, compared with the traditional cleaning mode, the system does not need of stopping, normal production and does not affect the normal production and the steel plate 6, and the cost investment is low.
Referring to fig. 2, in some examples, the metal detection element 5 includes a cold metal detector 51 and a hot metal detector 52;
the cold metal detector 51 is arranged in front of the heat treatment furnace, and the cold metal detector 51 is used for detecting the position of the steel plate 6 in front of the heat treatment furnace;
a hot metal detector 52 is provided in the heat treatment furnace, the hot metal detector 52 being for detecting the position of the steel plate 6 in the heat treatment furnace;
the cold metal detector 51 and the hot metal detector 52 are both electrically connected to the controller 3.
Before the steel plate 6 is subjected to heat treatment, the temperature is low, and the cold metal detector 51 can meet the condition for detecting the position of the steel plate 6; after the heat treatment, the temperature of the steel plate 6 rises, and the hot metal detector 52 can be adapted to a higher temperature working environment, and is installed in the furnace, and the failure rate in a high temperature environment is lower than that of the cold metal detector 51.
Referring to fig. 2, in some examples, the number of the roller ways 7 is multiple, and correspondingly, the number of the motors 1 is multiple, and the number of the motors 1 is the same as that of the roller ways 7 and is connected in a one-to-one correspondence manner. The number of the roller bed frequency converters 2 is the same as that of the motors 1, and the roller bed frequency converters 2 are connected with the controller 3 in a one-to-one correspondence manner.
With continued reference to fig. 2, the plurality of motors 1 may include a first motor 101, a second motor 102, a third motor 103, \8230;, an nth motor 1n, for convenience of description. Correspondingly, the plurality of roller bed frequency converters 2 may include a first roller bed frequency converter 201, a second roller bed frequency converter 202, a third roller bed frequency converter 203, \8230;, an nth roller bed frequency converter 2n. Correspondingly, the plurality of roller tables 7 may comprise a first roller table 701, a second roller table 702, a third roller table 703, a 8230, an n roller table 7n.
It can be understood that the number of roller ways 7, the number of motors 1 and the number of roller way frequency converters 2 are all equal, i.e. n is equal to the number of motors 1.
In addition, for convenience of description, the first motor 101 is connected to the first roller bed 701, the first roller bed frequency converter 201 is electrically connected to the first motor 101, and the first roller bed frequency converter 201 is configured to adjust the operation speed and/or the steering direction of the first motor 101, so that the first motor 101 drives the first roller bed 701 to move at the operation speed and/or the steering direction.
The second motor 102 is connected to the second roller way 702, the second roller way frequency converter 202 is electrically connected to the second motor 102, and the second roller way frequency converter 202 is used for adjusting the operation speed and/or the turning direction of the second motor 102, so that the second motor 102 drives the second roller way 702 to move at the operation speed and/or the turning direction.
The third motor 103 is connected to the third roller 703, the third roller frequency converter 203 is electrically connected to the third motor 103, and the third roller frequency converter 203 is configured to adjust the operation speed and/or the rotation direction of the third motor 103, so that the third motor 103 drives the third roller 703 to move at the operation speed and/or the rotation direction.
The nth motor 1n is connected with the nth roller way 7n, the nth roller way frequency converter 2n is electrically connected with the nth motor 1n, and the nth roller way frequency converter 2n is used for adjusting the running speed and/or the steering of the nth motor 1n, so that the nth motor 1n drives the nth roller way 7n to move at the running speed and/or the steering.
According to the embodiment, the control parameters of the roller way frequency converter can be dynamically modified through the mutual matching between the controller and the roller way frequency converter, so that the running speed and/or the steering of the motor can be dynamically adjusted, the load on the motor is small, the motor can be prevented from faults such as locked rotor and overcurrent, and the safety of equipment and normal continuous production can be ensured.
Referring to fig. 3 and 4, taking the number of the roller ways as an example, the number of the roller ways is 24, and the reference number set is a positive integer set N1, N1= {701, 702, 703, 704, 705, 706, \ 8230 \8230; \ 724}, that is, in fig. 3, from left to right, the first roller way 701, the second roller way 702, the third roller way 703, and so on are sequentially arranged, and the sequence is continued until the twenty-four roller ways 724. When the steel plate 6 is positioned on the roller way marks 704-714, namely the steel plate 6 is positioned on the fourth roller way 704 to the fourteenth roller way 714, the controller adjusts the control parameters of the roller way frequency converters 207-210 corresponding to the roller ways with the roller way marks 707-710 to change the rotating speed and/or the steering direction of the motors 107-110 corresponding to the roller ways with the roller way marks 707-710, namely the controller adjusts the control parameters of the seventh roller way frequency converters 207 to the tenth roller way frequency converters 210 to change the rotating speed and/or the steering direction of the seventh motors 107 to the tenth motors 110 corresponding to the seventh roller ways 707-710 to generate sliding friction between the roller ways with the roller way marks 707-710 and the steel plate 6, so that the roller way surfaces with the roller way marks 707-710 can be cleaned, namely the sliding friction between the seventh roller way marks 707 to the tenth roller way 710 and the steel plate 6 can be cleaned, and the roller way surfaces of the seventh roller ways 707 to the tenth roller ways 710 can be cleaned.
Steel plate referring to fig. 3, 4, in some examples, the width of the steel plate 6 is the same as the axial length of the roller table 7.
In the above embodiment, the steel plate 6 can be in full contact with the top of one or more roller ways 7 in the axial direction, and the roller ways 7 can be completely cleaned after the roller ways 7 rotate for a circle and still contact with the steel plate 6.
In some examples, the minimum length L of the steel plate 6 is the sum of the distance between the four consecutive roller tracks 7 and the diameter of the four roller tracks 7, i.e. L ≧ 3 × D1+4 × D2, where D1 is the distance between two adjacent roller tracks 7 and D2 is the diameter of a roller track 7.
Above-mentioned embodiment can guarantee, has at least one roll table 7 to rotate still to be located the below of steel sheet 6 after a week, so, adjusts motor 1's rotational speed and/or turns to in proper order, and steel sheet 6 carries once, can accomplish the surface cleaning of all roll tables 7, need not to make steel sheet 6 carry out the transport many times in order to clear up comprehensively, can enough improve the efficiency of clear up comprehensively, can reduce the energy consumption that causes because of carrying many times again.
It will be appreciated that after the steel sheet 6 has passed a certain roller table 7, the roller table 7 is returned to the rotation speed and the direction of rotation for transporting the steel sheet 6.
In some examples, the upper computer 4 is an HMI (Human Machine Interaction, HMI for short) upper computer.
In the above embodiment, the HMI host computer can perform human-computer interaction through the display interface, and can reduce the use of instruments such as buttons, switches, and meters.
In some examples, the controller 3 is a PLC (Programmable logic Control, PLC for short) controller.
In the above embodiment, the PLC controller is selected, which has the advantages of high reliability and strong anti-interference performance.
When the steering of the motors 1 is adjusted, the number of the motors 1 for adjusting the steering is not more than 1/3 of the number of the roller ways 7 below the steel plate 6. Taking the steel plate 6 at the roller ways 704-714 as an example, the turning directions of the motors 108-110 corresponding to the roller ways 708-710 are preferentially adjusted, that is, when the steel plate 6 is located at the fourth roller way 704 to the fourteenth roller way 714, the turning directions of the eighth motor 108 to the tenth motor 110 are preferentially adjusted, so that the forward conveying force applied to the steel plate 6 is about 1/3 of the turning direction, and the steel plate 6 still has a forward moving trend, so as to prevent the steel plate 6 from moving in a reverse direction. It will be appreciated that when adjusting the steering of the motor 1, its rotational speed can be adjusted simultaneously.
When the rotation speeds of the plurality of motors 1 are adjusted, a mode in which the total of the rotation speed variation amounts of the plurality of motors 1 is 0 is preferably selected. Taking the steel plate 6 located at the fourth roller way 704 to the fourteenth roller way 714 as an example, the motor rotation speeds of the seventh motor 107 to the tenth motor 110 are increased by 10%, and the motor rotation speeds of the eleventh motor 111 to the fourteenth motor 114 are decreased by 10%; or the motor rotation speeds of the seventh motor 107, the ninth motor 109, the eleventh motor 111 and the thirteenth motor 113 are reduced by 20%, and the motor rotation speeds of the eighth motor 108, the tenth motor 110, the twelfth motor 112 and the fourteenth motor 114 are increased by 20%, so that the seventh roller way 707 to the fourteenth roller way 714 can be cleaned simultaneously, the conveying speed of the steel plate 6 can be kept unchanged, and the position of the steel plate 6 can be judged by the PLC controller more conveniently.
It should be noted that the numerical values and numerical ranges related to the embodiments of the present application are approximate values, and there may be a certain range of errors depending on the manufacturing process, and the error may be considered as negligible by those skilled in the art.
The embodiment of the application provides an automatic cleaning system for roller way surfaces of heat treatment furnaces, the roller way 7 is driven to rotate through the motor 1, the conveying of a steel plate 6 is achieved, the current position of the steel plate 6 is detected through the metal detection element 5, the controller 3 determines the current rotating speed of the motor 1 according to the current parameters of the roller way frequency converter 2, then determines the rotating speed of the roller way 7, and determines the conveying speed of the steel plate 6 according to the rotating speed of the roller way 7, so that the position of the steel plate 6 after being separated from the detection area of the metal detection element 5 is mastered in real time, a user sets the rotating speed and/or steering and other working parameters of the motor 1 through the upper computer 4, the controller 3 correspondingly adjusts the working parameters of the motor 1 corresponding to the position of the steel plate 6, sliding friction is generated between the roller way 7 and the steel plate 6, metal oxides attached to the surfaces of the roller way 7 can be removed under the action of friction force, the automatic cleaning of the surfaces of the roller way 7 can be achieved, compared with the traditional cleaning mode, the system does not need of stopping, normal production and does not affect the normal production and processing of the steel plate 6, and the cost investment is low.
It is understood that a person skilled in the art can combine, split, recombine and the like the embodiments of the present application to obtain other embodiments on the basis of several embodiments provided by the present application, and the embodiments do not depart from the scope of the present application.
The above embodiments are only intended to be specific embodiments of the present application, and are not intended to limit the scope of the embodiments of the present application, and any modifications, equivalent substitutions, improvements, and the like made on the basis of the technical solutions of the embodiments of the present application should be included in the scope of the embodiments of the present application.
Claims (7)
1. The utility model provides an automatic clearance system of heat treatment furnace roll table surface which characterized in that includes: the device comprises an upper computer, a controller, a roller way frequency converter, a motor and a metal detection element;
the motor is electrically connected with the roller way frequency converter, the motor is connected with the roller way, the motor is used for driving the roller way to rotate, and the roller way frequency converter is used for adjusting the working parameters of the motor so as to change the rotating speed and/or the steering direction of the motor;
the utility model discloses a metal detection element, including controller, metal detection element, controller, upper computer, roller table converter, controller, upper computer, controller and upper computer electric connection, the controller be used for receiving the position of the steel sheet of metal detection element transmission, the upper computer is located the position of the steel sheet of controller transmission, and to the controller sends that the steel sheet place roller table corresponds the control parameter of predetermineeing of roller table converter, the controller is used for adjusting the roller table converter extremely predetermine the control parameter, has in order to control at least one in the motor that the roller table of steel sheet corresponds with predetermineeing working parameter work.
2. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1, wherein the metal detection element comprises a cold metal detector and a hot metal detector;
the cold metal detector is arranged in front of the heat treatment furnace and is used for detecting the position of a steel plate in front of the heat treatment furnace;
the hot metal detector is arranged in the heat treatment furnace and is used for detecting the position of a steel plate in the heat treatment furnace;
the cold metal detector and the hot metal detector are both electrically connected with the controller.
3. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1, wherein the number of the roller ways is multiple, correspondingly, the number of the motors is multiple, and the number of the motors is the same as that of the roller ways and is connected in a one-to-one correspondence manner;
the quantity of roll table converter with the quantity of motor is the same and the one-to-one is connected, and is a plurality of the roll table converter all with controller electric connection.
4. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1 or 3, wherein the width of the steel plate is the same as the axial length of the roller way.
5. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1 or 3, wherein the minimum length of the steel plate is the sum of the distance between four continuous roller ways and the diameter of the four roller ways.
6. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1, wherein the upper computer is an HMI upper computer.
7. The automatic cleaning system for the surface of the roller way of the heat treatment furnace according to claim 1, wherein the controller is a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222459653.9U CN218506922U (en) | 2022-09-16 | 2022-09-16 | Automatic cleaning system for surface of roller way of heat treatment furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222459653.9U CN218506922U (en) | 2022-09-16 | 2022-09-16 | Automatic cleaning system for surface of roller way of heat treatment furnace |
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| CN218506922U true CN218506922U (en) | 2023-02-21 |
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| CN202222459653.9U Active CN218506922U (en) | 2022-09-16 | 2022-09-16 | Automatic cleaning system for surface of roller way of heat treatment furnace |
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