CN214168073U - Strong air tempering furnace with improved structure for heat treatment of steel strip - Google Patents
Strong air tempering furnace with improved structure for heat treatment of steel strip Download PDFInfo
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- CN214168073U CN214168073U CN202022670536.8U CN202022670536U CN214168073U CN 214168073 U CN214168073 U CN 214168073U CN 202022670536 U CN202022670536 U CN 202022670536U CN 214168073 U CN214168073 U CN 214168073U
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Abstract
The utility model relates to an improve strong wind tempering furnace of structure for steel band heat treatment, including furnace body and bell, its characterized in that: an upper lining box is arranged in the inner cavity of the furnace cover, a lower lining box is arranged in the inner cavity of the furnace body, the upper lining box is arranged above the workpiece processing channel, and the lower lining box is arranged below the workpiece processing channel, so that a closed structure for the workpiece processing channel is formed; the bottom surface of the upper lining box and the top surface of the lower lining box are respectively provided with a plurality of ventilation openings to form a protective atmosphere circulation loop; the two water cooling fans comprise an upper water cooling fan and a lower water cooling fan, the upper water cooling fan is arranged in the inner cavity of the furnace cover, and the lower water cooling fan is arranged in the inner cavity of the furnace body to form an upper and lower opposite blowing structure; the four groups of heating boxes comprise an upper heating box and a lower heating box, wherein the upper heating box is arranged in the inner cavity of the furnace cover, and the lower heating box is arranged in the inner cavity of the furnace body to form an upper-lower opposite heating structure. The method has the characteristics of stable protective atmosphere input, uniform workpiece heating and the like.
Description
Technical Field
The utility model relates to a tempering furnace, in particular to a strong wind tempering furnace with an improved structure for steel strip heat treatment, which is mainly applied to the tempering treatment in a steel strip tempering line. Belongs to the technical field of metal heat treatment equipment.
Background
The belt tempering furnace in the prior art mainly uses two fans above the bellows to input protective atmosphere, and is of a single-side blowing structure. The tempering furnace of this structure has the following problems: (1) the input of protective atmosphere is unstable, the heating of the workpiece is not uniform, and the processing efficiency is low; (2) the atmosphere and heating of the upper and lower sides of the workpiece are not uniform, which causes the results of tempering treatment of the upper and lower sides of the workpiece to have larger difference and the hardness of the tempered tissue to be non-uniform, and the processing quality is not stable. And (3) the workpiece is not supported in the tempering treatment process in the furnace chamber, and the steel strip is greatly influenced by gravity, so that the steel strip can deform to a certain degree in the tempering treatment process.
Therefore, how to improve the processing efficiency and the processing quality of the tempering furnace becomes important.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems of unstable protective atmosphere input, uneven heating of workpieces, low processing efficiency, unstable processing quality, easy deformation of processing products and the like of the belt tempering furnace in the prior art, and providing an improved structure forced air tempering furnace for steel belt heat treatment, which has the prominent substantive characteristics and the obvious progress of reasonable structure, stable protective atmosphere input, even heating of workpieces, high processing efficiency, stable processing quality, non-deformable processing products and the like.
The purpose of the utility model can be achieved by adopting the following technical scheme:
the strong wind tempering furnace with the improved structure for the heat treatment of the steel strip comprises a furnace body and a furnace cover, wherein the furnace body is connected with the furnace cover to form a sealed inner cavity; a workpiece inlet/outlet is arranged at the two ends of the joint of the two, and a workpiece processing channel is arranged in the middle of the sealed inner cavity; a water cooling fan and a heating box are arranged in the sealed inner cavity; the structure is characterized in that: an upper lining box is arranged in the inner cavity of the furnace cover, a lower lining box is arranged in the inner cavity of the furnace body, the upper lining box is arranged above the workpiece processing channel, and the lower lining box is arranged below the workpiece processing channel, so that a closed structure for the workpiece processing channel is formed; the bottom surface of the upper lining box and the top surface of the lower lining box are respectively provided with a plurality of ventilation openings to form a protective atmosphere circulation loop; the two water cooling fans comprise an upper water cooling fan and a lower water cooling fan, the upper water cooling fan is arranged in the inner cavity of the furnace cover, and the lower water cooling fan is arranged in the inner cavity of the furnace body to form an upper and lower opposite blowing structure; the heating boxes are four groups (two groups for each of the upper heating box and the lower heating box), and comprise an upper heating box and a lower heating box, wherein the upper heating box is arranged in the inner cavity of the furnace cover, and the lower heating box is arranged in the inner cavity of the furnace body to form an upper-lower opposite heating structure; the air outlet of the upper water cooling fan and the upper heating box are positioned in the upper lining box, and the air outlet of the lower water cooling fan and the lower heating box are positioned in the lower lining box, so that a multipoint distributed air inlet and heating structure for a workpiece processing channel is formed; and a plurality of supporting rollers which are uniformly distributed are arranged in the workpiece processing channel to form a workpiece supporting structure.
The purpose of the utility model can also be achieved by adopting the following technical scheme:
furthermore, an elastic sealing piece is arranged at the joint of the furnace cover and the furnace body, a plurality of positioning and adjusting components are respectively arranged on the two sides of the furnace cover and the furnace body, and the relative position of the furnace cover and the furnace body is positioned and adjusted through the positioning and adjusting components to form an adjusting structure for the relative position of the furnace cover and the furnace body.
Furthermore, an annular gap is arranged between the inner wall of the furnace cover and the upper lining box, and an annular gap is arranged between the inner wall of the furnace body and the lower lining box to form an annular air flow channel so as to form an air flow circulation loop in the furnace body; and a plurality of thermocouple tubes are arranged in the annular airflow channel.
Furthermore, the inner walls of the furnace body and the furnace cover are provided with heat preservation cotton layers.
Furthermore, the upper water cooling fan and the lower water cooling fan are arranged in the middle of the inner cavity of the furnace body, three upper ventilation openings are formed in the bottom surface of the upper lining box, and three lower ventilation openings are formed in the top surface of the lower lining box on two sides of the positions where the upper water cooling fan and the lower water cooling fan are located; three upper ventilation openings are also formed in the bottom surface of the upper lining box and three lower ventilation openings are formed in the top surface of the lower lining box on the right side of the positions where the upper water cooling fan and the lower water cooling fan are located; forming a symmetrical protective atmosphere circulating loop.
Furthermore, a plurality of supporting seats are arranged on the bottom surface of the furnace body to support the furnace body to leave the ground.
The utility model has the following outstanding substantive characteristics and remarkable progress:
1. the utility model is provided with the upper water cooling fan and the lower water cooling fan to form an upper and lower opposite blowing structure; the four groups of heating boxes comprise an upper heating box arranged on the upper side surface of the sealed inner cavity and a lower heating box arranged on the lower side surface of the sealed inner cavity, so that an upper opposite heating structure and a lower opposite heating structure are formed; an upper lining box and a lower lining box are arranged in the sealed inner cavity, and the workpiece processing channel is sealed through the upper lining box and the lower lining box; the bottom surface of the upper lining box and the top surface of the lower lining box are respectively provided with a plurality of ventilation openings, an air outlet of an upper water cooling fan and an upper heating box are positioned in the upper lining box, and an air outlet of a lower water cooling fan and a lower heating box are positioned in the lower lining box, so that a multipoint distributed air inlet and heating structure for a workpiece processing channel is formed; and a plurality of supporting rollers which are uniformly distributed are arranged in the workpiece processing channel to form a workpiece supporting structure. Therefore, the problems that the belt tempering furnace in the prior art is unstable in protective atmosphere input, uneven in workpiece heating, low in machining efficiency, unstable in machining quality, easy to deform machining products and the like are solved, and the belt tempering furnace has the prominent substantive characteristics and the remarkable progress that the structure is reasonable, the protective atmosphere input is stable, the workpiece is uniform in heating, the machining efficiency is high, the machining quality is stable, the machining products are not easy to deform and the like.
2. The utility model discloses owing to respectively be equipped with a plurality of location and adjusting member in furnace body upper portion and furnace body lower part both sides, carry out the location regulation to furnace body upper portion and furnace body lower part relative position through location and adjusting member, constitute the regulation structure in furnace body inner chamber space, consequently can adjust furnace body inner chamber space according to the needs of product, have characteristics such as adaptation different product varieties and different specifications, energy saving and application scope extensively.
3. The utility model is provided with an annular gap between the inner wall of the furnace body and the upper lining box and the lower lining box to form an annular air flow channel, so as to form an air flow circulation loop in the furnace body; the plurality of thermocouple tubes are arranged in the annular airflow channel, so that the upper surface and the lower surface of the workpiece are uniformly heated, the atmosphere is stable, the product quality is ensured, and the like.
4. Use the utility model discloses add the steel band and carry out tempering processing, can make the steel band tempering treatment process be heated evenly, whole tempering tissue is unanimous with hardness, improves tempering efficiency and tempering quality, provides reliable guarantee for product tempering stability.
Drawings
Fig. 1 is a front sectional view of an embodiment of the present invention.
Fig. 2 is a sectional view of a top view structure according to an embodiment of the present invention.
Fig. 3 is a side sectional view of an embodiment of the present invention.
Fig. 4 is an enlarged view of a portion of the structure of fig. 1.
Fig. 5 is an enlarged view of a portion of the structure of fig. 2.
In the figure, a fan 1, a heating box 2, a furnace cover 3, an upper lining box 4, a lower lining box 5, a furnace body 6, a support roller 7 and a positioning component 8 are arranged.
Detailed Description
Detailed description of the preferred embodiment 1
Referring to fig. 1 to 5, a strong wind tempering furnace with an improved structure for heat treatment of steel strips according to embodiment 1 of the present invention includes a furnace body 6 and a furnace cover 3, wherein the furnace body 6 is joined with the furnace cover 3 to form a sealed inner cavity; a workpiece inlet/outlet is arranged at the two ends of the joint of the two, and a workpiece processing channel is arranged in the middle of the sealed inner cavity; a water cooling fan 1 and a heating box 2 are arranged in the sealed inner cavity; an upper lining box 4 is arranged in the inner cavity of the furnace cover 3, a lower lining box 5 is arranged in the inner cavity of the furnace body 6, the upper lining box 4 is arranged above the workpiece processing channel, and the lower lining box 5 is arranged below the workpiece processing channel to form a closed structure for the workpiece processing channel; a plurality of ventilation openings are respectively arranged on the bottom surface of the upper lining box 4 and the top surface of the lower lining box 5 to form a protective atmosphere circulating loop 12; the two water cooling fans 1 comprise an upper water cooling fan 1-1 and a lower water cooling fan 1-2, the upper water cooling fan 1-1 is arranged in the inner cavity of the furnace cover 3, and the lower water cooling fan 1-2 is arranged in the inner cavity of the furnace body 6, so that an up-down opposite blowing structure is formed; the heating boxes 2 are four groups, including an upper heating box 2-1 and a lower heating box 2-2, the upper heating box 2-1 is arranged in the inner cavity of the furnace cover 3, and the lower heating box 2-2 is arranged in the inner cavity of the furnace body 6, so as to form an upper and lower opposite heating structure; an air outlet of the upper water cooling fan 1-1 and the upper heating box 2-1 are positioned in the upper lining box 4, an air outlet of the lower water cooling fan 1-2 and the lower heating box 2-2 are positioned in the lower lining box 5, and a multipoint distributed air inlet and heating structure for a workpiece processing channel is formed; and a plurality of supporting rollers 7 which are uniformly distributed are arranged in the workpiece processing channel to form a workpiece supporting structure.
In this embodiment:
an elastic sealing piece is arranged at the joint of the furnace cover 3 and the furnace body 6, a plurality of positioning and adjusting components 8 are respectively arranged at the two sides of the furnace cover 3 and the furnace body 6, and the relative positions of the furnace cover 3 and the furnace body 6 are positioned and adjusted through the positioning and adjusting components 8 to form an adjusting structure of the relative positions of the furnace cover 3 and the furnace body 6. The inner cavity space of the furnace body is adjusted according to the requirement of products, and the furnace is suitable for the processed workpieces of different varieties and different specifications.
An annular gap is arranged between the inner wall of the furnace cover 3 and the upper lining box, and an annular gap is arranged between the inner wall of the furnace body 6 and the lower lining box 5 to form an annular air flow channel 11 so as to form an air flow circulation loop in the furnace body 6; several thermocouple tubes 10 are arranged in the annular gas flow channel 11. So that the upper surface and the lower surface of the workpiece are heated uniformly, the atmosphere is stable, and the product quality is ensured.
The inner wall of the furnace cover 3 and the inner wall of the furnace body 6 are provided with a heat preservation cotton layer 9. The heat preservation time of the inner cavity of the furnace body is long, the protective atmosphere is stable, the workpiece is heated uniformly, and the product quality is improved.
The upper water cooling fan 1-1 and the lower water cooling fan 1-2 are arranged in the middle of the inner cavity of the furnace body, and three upper ventilation openings 4-1 are arranged on the bottom surface of the upper lining box 4 and three lower ventilation openings 5-1 are arranged on the top surface of the lower lining box 5 on two sides of the positions of the upper water cooling fan 1-1 and the lower water cooling fan 1-2; three upper ventilation openings 4-1 are also formed in the bottom surface of the upper lining box 4 and three lower ventilation openings 5-1 are formed in the top surface of the lower lining box 5 on the right sides of the positions of the upper water cooling fan 1-1 and the lower water cooling fan 1-2; a symmetrical protective atmosphere circulation loop 12 is formed. The upper surface and the lower surface of the workpiece are heated uniformly, the atmosphere is stable, and the product quality is ensured.
The bottom surface of the furnace body 6 is erected on the ground through supporting legs 13, and a fixed supporting frame is welded in the furnace body 6. The lower lining box 5 is positioned in the furnace body 6, the box body of the lower lining box 5 is connected with the fixed supporting frame of the furnace body 6, the openings of the heating box 2-2 in the lower lining box 5 are positioned at the same side and correspond to the openings of the heating box of the furnace body, and the openings at the two sides of the lower lining box 5 correspond to the openings of the furnace body. The supporting carrier rollers 7 penetrate through the openings of the lower lining box 5 and the furnace body 6, and the supporting plates on two sides of the supporting carrier rollers 7 are positioned on two sides of the inner cavity of the furnace body 6 and are welded with the inner cavity of the furnace body 6. The furnace cover 3 is positioned above the furnace body 6, and a fixed support frame is welded in the furnace cover 3. Go up inside lining case 4 and be located the bell, go up inside lining case box and be connected with bell fixed stay frame, go up inside lining case heating box opening and bell heating box opening and be located the homonymy and correspond. And heat preservation cotton is filled among the furnace cover, the furnace body and the lining box. The heating box is inserted into the lining box through the openings of the furnace cover and the upper lining box as well as the openings of the furnace body and the lower lining box, and is fixed on the furnace cover and the furnace body by bolts and nuts. The impeller of the fan extends into the lining box through openings of the furnace cover and the upper lining box as well as the opening of the furnace body and the lower lining box, the fan is provided with a fixed flange, and the fan is fixed on the furnace cover and the furnace body through the flange by bolts and nuts. The positioning mechanism is welded on the two sides of the furnace cover and the furnace body, the upper positioning component is welded with the furnace cover, and the lower positioning mechanism is welded with the furnace body and used for positioning when the furnace cover is assembled with the furnace body. The furnace cover and the furnace body are fixed by bolts and nuts.
The working principle of the embodiment is as follows:
in the embodiment, the upper and lower fans (1-1, 1-2) are arranged in the inner cavity of the tempering furnace, and on the basis, the upper lining box 4 and the lower lining box 5 are designed for hot air guiding, so that the upper and lower steel strip surfaces of the steel strip can be subjected to same hot air strong circulation, the steel strip surfaces are heated uniformly, the microstructure of the product is consistent, and the hardness is uniform.
Twelve air outlets are designed in the upper lining box and the lower lining box, the air outlets are respectively positioned at two sides of the fan (1-1, 1-2), six air outlets are arranged at each side, the air outlets are symmetrical left and right, the upper position and the lower position correspond to each other, and each air outlet is over against the front surface of the steel strip. The protective atmosphere 20 drives the impeller to rotate powerfully through the fan, enters the lining boxes (4, 5) through the annular airflow channel 11, passes through the heating boxes (2-1, 2-2) to be heated, is output from the air outlet through the flow distribution plate to temper the steel strip, and then returns to the lining boxes (2-1, 2-2) through the fan in the middle. The whole process realizes the circulation flow of the protective atmosphere 20, greatly improves the use efficiency of heat and reduces energy loss. The plurality of air outlets enable the protective atmosphere 20 to be conveyed to each part of the steel surface more uniformly, the tempering treatment of the steel strip is more uniform, and the tempering quality of the steel strip is improved.
The heating mode adopts the modular design of the box body, the heating wire is assembled in the box body, and the heating box is inserted into the air channel from the side surface for heating. The heating box is formed by connecting three groups of heating wires in a three-phase manner, connecting the three groups of heating wires in a 380v and Y manner, assembling and welding. The heating box is inserted into the lining box through the furnace cover, the opening between the furnace body and the lining box, and protective atmosphere is heated by the heating wire when passing through the heating wire. The total number of the heating boxes is 4, and the heating boxes are respectively positioned at two sides of the upper fan and the lower fan and are symmetrically distributed. Meanwhile, the heating box can be independently taken out, so that the heating box is convenient to replace and repair.
The temperature in the stove is high in the use, can lead to the motor shaft with heat conduction through hot-blast on, can lead to the motor working process temperature higher through heat-conduction, adopts the water-cooled motor can effectively reduce this influence. Compared with a conventional motor, the water-cooled motor is additionally provided with the water-cooled radiating system, the water-cooled radiating system enables the motor to radiate more quickly in the using process, the service life of the motor is prolonged, and the motor is more durable.
The motor can be controlled in a frequency conversion mode, can be adjusted when steel strips with different specifications are tempered, and the requirement of air quantity required by tempering treatment of the corresponding steel strips with different specifications can be met by adjusting the rotating speed of the motor through the frequency converter.
Four supporting rollers 7 are added in the lower inner lining box and are used for supporting the steel strip 30 (workpiece) and reducing the sagging caused by the influence of gravity so as to reduce the deformation of the steel strip in the tempering treatment process in the tempering furnace. The two sides of the supporting carrier rollers 7 are in contact with the furnace body 6, penetrate into the tempering furnace through the openings in the lower lining box and are symmetrically distributed on the two sides by taking the fan as the center, and the two sides are arranged on one side.
A positioning mechanism is designed between the furnace cover and the furnace body, so that the tempering furnace is convenient to position and assemble.
Introducing protective atmosphere into the furnace chamber, blowing the protective atmosphere into the upper lining box and the lower lining box by the fan along the specially designed air channel, leading the protective atmosphere into the upper lining box and the lower lining box and then heating the upper lining box and the lower lining box by the guide box, then advancing along the path in the furnace, leading part of the protective atmosphere into the 1 air port when passing through the air deflector, continuously blowing the rest protective atmosphere to the 2 air ports and the 3 air ports along the box body, leading the protective atmosphere into the furnace chamber through the air outlet, and returning the protective atmosphere to the upper lining box and the lower lining box from the furnace chamber through the fan. After the steel belt enters the furnace cavity, the weight of the steel belt is supported by 4 supporting carrier rollers, the influence of gravity on the steel belt is reduced, and the processing quality of the steel belt is improved.
The heating wire heats to give out heat, and the heat conducts heat to the steel band through the protective atmosphere, so as to achieve tempering heat treatment of the steel band. The fan blows the heated protective atmosphere onto the steel strip through the air duct, and the heat conduction effect is promoted.
Specific example 2:
the utility model discloses embodiment 2's characteristics are: on the basis of the specific embodiment 1, according to the length of the furnace body and the needs of the processed products, four, eight, ten or twelve upper ventilation openings 4-1 are arranged on the bottom surface of the upper lining box 4, four, eight, ten or twelve lower ventilation openings 5-1 are arranged on the top surface of the lower lining box 5, and the number of the upper ventilation openings 4-1 is the same as that of the lower ventilation openings 5-1. The rest is the same as in embodiment 1.
Specific example 3:
the utility model discloses specific embodiment 3's characteristics are: several thermocouple tubes 10 are arranged in the annular gas flow channel 11. The rest is the same as embodiment 1 or embodiment 2.
Claims (6)
1. The strong wind tempering furnace with the improved structure for the heat treatment of the steel strip comprises a furnace body (6) and a furnace cover (3), wherein the furnace body (6) is connected with the furnace cover (3) to form a sealed inner cavity; a workpiece inlet/outlet is arranged at the two ends of the joint of the two, and a workpiece processing channel is arranged in the middle of the sealed inner cavity; a water cooling fan (1) and a heating box (2) are arranged in the sealed inner cavity; the method is characterized in that: an upper lining box (4) is arranged in the inner cavity of the furnace cover (3), a lower lining box (5) is arranged in the inner cavity of the furnace body (6), the upper lining box (4) is arranged above the workpiece machining channel, and the lower lining box (5) is arranged below the workpiece machining channel, so that a closed structure for the workpiece machining channel is formed; the bottom surface of the upper lining box (4) and the top surface of the lower lining box (5) are respectively provided with a plurality of ventilation openings to form a protective atmosphere circulating loop (12); the two water cooling fans (1) comprise an upper water cooling fan (1-1) and a lower water cooling fan (1-2), the upper water cooling fan (1-1) is arranged in the inner cavity of the furnace cover (3), and the lower water cooling fan (1-2) is arranged in the inner cavity of the furnace body (6) to form an upper and lower opposite blowing structure; the two groups of heating boxes (2) comprise an upper heating box (2-1) and a lower heating box (2-2), the upper heating box (2-1) is arranged in the inner cavity of the furnace cover (3), and the lower heating box (2-2) is arranged in the inner cavity of the furnace body (6) to form an upper and lower opposite heating structure; an air outlet of the upper water cooling fan (1-1) and the upper heating box (2-1) are positioned in the upper lining box (4), an air outlet of the lower water cooling fan (1-2) and the lower heating box (2-2) are positioned in the lower lining box (5), and a multi-point distributed air inlet and heating structure for a workpiece processing channel is formed; a plurality of supporting rollers (7) which are uniformly distributed are arranged in the workpiece processing channel to form a workpiece supporting structure.
2. A structurally improved forced air tempering furnace for heat treatment of steel strip as claimed in claim 1 wherein: an elastic sealing piece is arranged at the joint of the furnace cover (3) and the furnace body (6), a plurality of positioning and adjusting components (8) are respectively arranged at the two sides of the furnace cover (3) and the furnace body (6), and the relative positions of the furnace cover (3) and the furnace body (6) are positioned and adjusted through the positioning and adjusting components (8) to form an adjusting structure for the relative positions of the furnace cover (3) and the furnace body (6).
3. A structurally improved forced air tempering furnace for heat treatment of steel strip according to claim 1 or 2 characterized in that: an annular gap is arranged between the inner wall of the furnace cover (3) and the upper lining box, and an annular gap is arranged between the inner wall of the furnace body (6) and the lower lining box (5) to form an annular air flow channel (11) so as to form an air flow circulation loop in the furnace body (6); a plurality of thermocouple tubes (10) are arranged in the annular airflow channel (11).
4. A structurally improved forced air tempering furnace for heat treatment of steel strip according to claim 1 or 2 characterized in that: the inner wall of the furnace body (6) and the inner wall of the furnace cover (3) are provided with a heat preservation cotton layer (9).
5. A structurally improved forced air tempering furnace for heat treatment of steel strip according to claim 1 or 2 characterized in that: the upper water cooling fan (1-1) and the lower water cooling fan (1-2) are arranged in the middle of the inner cavity of the furnace body, three upper ventilation openings (4-1) are formed in the bottom surface of the upper lining box (4) on the left side of the positions of the upper water cooling fan (1-1) and the lower water cooling fan (1-2), and three lower ventilation openings (5-1) are formed in the top surface of the lower lining box (5); three upper ventilation openings (4-1) are formed in the bottom surface of the upper lining box (4) and three lower ventilation openings (5-1) are formed in the top surface of the lower lining box (5) on the right sides of the positions of the upper water cooling fan (1-1) and the lower water cooling fan (1-2); a symmetrical protective atmosphere circulation loop (12) is formed.
6. A structurally improved forced air tempering furnace for heat treatment of steel strip according to claim 1 or 2 characterized in that: the bottom surface of the furnace body (6) is provided with a plurality of supporting seats (13) to support the furnace body (6) to leave the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022670536.8U CN214168073U (en) | 2020-11-18 | 2020-11-18 | Strong air tempering furnace with improved structure for heat treatment of steel strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022670536.8U CN214168073U (en) | 2020-11-18 | 2020-11-18 | Strong air tempering furnace with improved structure for heat treatment of steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214168073U true CN214168073U (en) | 2021-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022670536.8U Active CN214168073U (en) | 2020-11-18 | 2020-11-18 | Strong air tempering furnace with improved structure for heat treatment of steel strip |
Country Status (1)
| Country | Link |
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| CN (1) | CN214168073U (en) |
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2020
- 2020-11-18 CN CN202022670536.8U patent/CN214168073U/en active Active
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