CN116287644A - Novel continuous steel pipe stress-relief anaerobic annealing device and method - Google Patents
Novel continuous steel pipe stress-relief anaerobic annealing device and method Download PDFInfo
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- CN116287644A CN116287644A CN202310260829.4A CN202310260829A CN116287644A CN 116287644 A CN116287644 A CN 116287644A CN 202310260829 A CN202310260829 A CN 202310260829A CN 116287644 A CN116287644 A CN 116287644A
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/30—Stress-relieving
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Abstract
The invention relates to the technical field of steel tube processing, in particular to a novel continuous steel tube stress-relief anaerobic annealing device and a novel continuous steel tube stress-relief anaerobic annealing method.
Description
Technical Field
The invention relates to the technical field of steel tube processing, in particular to a novel continuous steel tube stress-relieving anaerobic annealing device and method.
Background
Annealing is a metal heat treatment process, which means that metal is slowly heated to a certain temperature, kept for a sufficient time and then cooled at a proper speed, so that hardness can be reduced, machinability is improved, residual stress is eliminated, size is stabilized, deformation and crack tendency are reduced, grains are thinned, a structure is adjusted, structural defects are eliminated, annealing is carried out under the working condition of introducing protective gas (generally carbon dioxide), annealing is also needed in the processing process of a steel pipe, the surface of the annealed steel pipe is bright, and the existing annealing device utilizes a heating device to provide heat for a heating block and then heat the steel pipe.
However, in the conventional apparatus for annealing steel pipes, after annealing the previous batch of steel pipes, the apparatus is stopped and the finished steel pipes are taken out, and then the next batch of steel pipes are placed in the apparatus, which results in lower annealing efficiency for the steel pipes.
Disclosure of Invention
The invention aims to provide a novel continuous steel pipe stress-relief anaerobic annealing device and method, and aims to solve the technical problem that in the traditional steel pipe annealing device in the prior art, after the annealing of the previous batch of steel pipes is completed, the processed steel pipes are taken out after the device is stopped, and then the next batch of steel pipes are placed in the device, so that the annealing efficiency of the steel pipes is low.
In order to achieve the above purpose, the novel continuous steel pipe destressing anaerobic annealing device comprises a base, an annealing box, a heating plate, a cooling box and a material taking mechanism, wherein the annealing box and the cooling box are arranged on the base, a feeding port and a protective gas inlet are formed in the annealing box, the material taking mechanism comprises a power piece, a disc, a supporting rod, a hollow block, a connecting block, a supporting plate, a shaft body and a shielding plate, the annealing box is further provided with a discharging port, two ends of the shaft body are rotatably connected with the annealing box, the supporting plate is fixedly connected with the shaft body, the heating plate is arranged on the supporting plate, the power piece is fixedly connected with the annealing box, the output end of the power piece is fixedly connected with the disc, one end of the connecting block is hinged with the supporting plate, the other end of the connecting block is hinged with the hollow block, one end of the supporting rod is fixedly connected with the disc, and the other end of the supporting rod penetrates through the through hole, and the supporting rod is fixedly connected with the eccentric position of the shielding plate.
The power piece comprises a support plate and a motor, wherein the support plate is fixedly connected with the annealing box, and the motor is installed on the support plate.
The material taking mechanism further comprises two sliding blocks, the annealing box is further provided with two sliding grooves, the two sliding blocks are fixedly connected with the hollow blocks, and the two sliding blocks are respectively and slidably connected with the corresponding sliding grooves.
The material taking mechanism further comprises a protection plate, wherein the protection plate is fixedly connected with the support plate and is located at one end, far away from the discharge hole, of the support plate.
The novel continuous steel pipe destressing anaerobic annealing device further comprises a supporting mechanism, and the supporting mechanism is arranged on the annealing box.
The supporting mechanism comprises a frame body, an air cylinder, a C-shaped plate and a connecting piece, wherein the frame body is fixedly connected with the annealing box, the connecting piece is rotationally connected with the frame body, the connecting piece is fixedly connected with the shielding plate, the air cylinder is installed on the frame body, the output end of the air cylinder is fixedly connected with the C-shaped plate, the C-shaped plate is provided with a supporting groove, and the connecting piece is contacted with the supporting groove.
The invention also provides a novel continuous steel pipe stress-relieving anaerobic annealing method, which adopts the novel continuous steel pipe stress-relieving anaerobic annealing device and comprises the following steps:
firstly, a quantitative steel pipe enters the annealing box through the feeding hole according to a specified rule, and the steel pipe is flatly paved and stays on the heating plate;
then, the heating plate is opened to heat the plurality of steel pipes, and after the heating is completed, the shielding plate is moved away from the discharge hole through the supporting mechanism;
with the power piece opened, the power piece drives the supporting plate to rotate through the disc, the supporting rod, the hollow block and the connecting block, and the supporting plate drives the heating plate to rotate;
when the heating plate rotates to incline, the steel pipes on the heating plate naturally roll and are discharged from the discharge hole into the cooling box for cooling, and then the power piece drives the supporting plate to reset through the disc, the supporting rod, the hollow block and the connecting block, and the next batch of steel pipes are added into the annealing box for processing;
the above operation is repeated, so that the annealing treatment of the steel pipe can be continuously performed, the annealing efficiency of the steel pipe is improved, and the batch annealing treatment of the steel pipe is facilitated.
According to the novel continuous steel pipe stress-relief anaerobic annealing device and method, the material taking mechanism is arranged, when a steel pipe is processed, firstly, a fixed amount of steel pipe enters the annealing box through the material inlet, the steel pipe is flatly laid and stays on the heating plate according to a specified rule, then the heating plate is opened to heat a plurality of steel pipes, after heating is completed, the shielding plate is moved away from the material outlet, along with opening of the power piece, the output end of the power piece drives the disc to rotate, the disc drives the supporting rod to rotate in the through hole, the supporting rod supports the hollow block to move while rotating in the through hole, one end of the connecting block is driven to rotate on the hollow block while moving, the other end of the connecting block is driven to rotate on the supporting plate, the supporting plate is driven to rotate while rotating, the shaft body is driven to rotate on the annealing box, and is driven to rotate, when the rotation is changed, the rolling is naturally discharged from the material outlet of the heating plate to the steel pipe, the cooling box is driven to cool down, and then the steel pipe can be repeatedly annealed, and the continuous annealing is carried out.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a front view of a first embodiment of the present invention.
Fig. 2 is a side view of a first embodiment of the invention.
Fig. 3 is a cross-sectional view of the A-A line structure of fig. 1 in accordance with the present invention.
Fig. 4 is a cross-sectional view of the B-B line structure of fig. 2 in accordance with the present invention.
Fig. 5 is a schematic structural view of a second embodiment of the present invention.
Fig. 6 is a front view of a third embodiment of the present invention.
Fig. 7 is a flow chart of the steps of the novel continuous steel tube destressing anaerobic annealing method of the invention.
101-base, 102-annealing box, 103-heating plate, 104-cooling box, 105-disc, 106-supporting rod, 107-hollow block, 108-connecting block, 109-supporting plate, 110-shaft, 111-shielding plate, 112-sliding block, 113-shielding plate, 114-supporting plate, 115-motor, 116-sliding groove, 117-through hole, 118-feeding hole, 119-discharging hole, 120-protective gas inlet, 201-frame, 202-cylinder, 203-C plate, 204-connecting piece, 205-supporting groove, 301-supporting block, 302-cover plate, 303-handle and 304-auxiliary groove.
Detailed Description
First embodiment:
referring to fig. 1 to 4, fig. 1 is a front view of a first embodiment of the present invention, fig. 2 is a side view of the first embodiment of the present invention, fig. 3 is a sectional view of the A-A line structure of fig. 1 of the present invention, and fig. 4 is a sectional view of the B-B line structure of fig. 2 of the present invention.
The invention provides a novel continuous steel pipe stress-relieving anaerobic annealing device which comprises: including base 101, annealing case 102, hot plate 103, cooler bin 104 and extracting mechanism, extracting mechanism includes power spare, disc 105, supports holding rod 106, cavity piece 107, connecting block 108, backup pad 109, axis body 110, shielding plate 111, two sliders 112 and guard plate 113, the power spare includes extension board 114 and motor 115, in the device of traditional annealing steel pipe among the prior art has been solved to the aforesaid scheme, after carrying out annealing to last batch of steel pipe, need take out the steel pipe that will process the completion after stopping the device, put the steel pipe of next batch in the device again, this process leads to the lower technical problem of annealing efficiency to the steel pipe.
For this specific embodiment, the annealing box 102 and the cooling box 104 are both disposed on the base 101, a feed inlet 118 and a protective gas inlet 120 are disposed on the annealing box 102, the heating plate 103 is used for heating the steel pipe, and a cooling liquid is disposed in the cooling box 104 and used for cooling the steel pipe.
Wherein, still be provided with discharge gate 119 on the annealing box 102, the both ends of axis body 110 all with annealing box 102 rotates to be connected, backup pad 109 with axis body 110 fixed connection, heating plate 103 sets up on backup pad 109, the power spare with annealing box 102 fixed connection, the output of power spare with disc 105 fixed connection, the one end of connecting block 108 with backup pad 109 articulates, the other end of connecting block 108 with cavity piece 107 articulates, cavity piece 107 is provided with through-hole 117, the one end of supporting rod 106 with disc 105 fixed connection, the other end of supporting rod 106 runs through the through-hole 117, supporting rod 106 eccentric arrangement is in disc 105, shielding plate 111 is arranged in discharge gate 119 department, through setting up extraction mechanism, when processing the steel pipe, at first according to prescribing to will quantitative steel pipe get into to in the annealing box 102, stop in heating plate 103 after the other end of connecting block 108 articulates with backup pad 109, the other end of connecting block 108 articulates with cavity piece 107, the cavity piece 107 is driven to rotate after the connecting block 106 is moved in the rotation of supporting plate 109, the connecting block is driven to rotate in the hollow piece 107, the hollow piece is driven to rotate, the connecting block 106 is driven to rotate, the hollow piece is driven to rotate in the rotation of connecting block 107, the hollow piece 107 is rotated in the rotation is carried out, through-hole 117. And drive the hot plate 103 rotates, when the hot plate 103 rotates and becomes the slope, steel pipe on the hot plate 103 is naturally rolled and is followed discharge gate 119 discharges to cool down in the case 104, later the power spare passes through disc 105 prop up hold the pole 106 hollow block 107 with connecting block 108 drives backup pad 109 resets, with next batch steel pipe add to the annealing case 102 is interior to process, repeat above-mentioned operation to can be continuous carry out the annealing treatment of steel pipe, improve the annealing efficiency to the steel pipe, do benefit to the batch annealing treatment of steel pipe.
Secondly, the support plate 114 is fixedly connected with the annealing box 102, the motor 115 is installed on the support plate 114, and the motor 115 can be fixed on the annealing box 102 through the support plate 114 by arranging the support plate 114 and the motor 115.
Meanwhile, the annealing box 102 is further provided with two sliding grooves 116, two sliding blocks 112 are fixedly connected with the hollow block 107, the two sliding blocks 112 are respectively and slidably connected with the corresponding sliding grooves 116, and by arranging two sliding blocks 112, the hollow block 107 drives the sliding blocks 112 to slide in the corresponding sliding grooves 116 when moving, so that the stability of the hollow block 107 can be improved.
In addition, the protection plate 113 is fixedly connected with the support plate 109 and is located at one end of the support plate 109 far away from the discharge port 119, and by setting the protection plate 113, the protection plate 113 can prevent the steel pipe from moving to the motor 115.
The novel continuous steel pipe destressing anaerobic annealing device of this embodiment is used, through setting up the extracting mechanism, when processing the steel pipe, at first according to the regulation with quantitative steel pipe warp feed inlet 118 gets into to in the annealing box 102, the steel pipe tiling is stopped on the hot plate 103, later open the hot plate 103 heats many steel pipes, wait to heat the back of accomplishing the shielding plate 111 follow discharge gate 119 department moves away, with opening the power spare, the output of power spare drives disc 105 rotates, disc 105 drives butt pole 106 rotates in the through-hole 117, butt pole 106 is in butt when rotating in the through-hole 117 cavity piece 107 removes, the hollow piece 107 moves the time drive the one end of connecting block 108 is in rotate on the cavity piece 107, drive the other end of connecting block 108 is in the backup pad 109 rotates, backup pad 109 drives the spindle 110 is in the annealing box 102 rotates, along with opening the power spare, the output of power spare drives the disc 105 rotates in the time of connecting block 103 the steel pipe is in the through the rotation of connecting block 107, the hot plate 107 is carried out to the cooling box is carried out to the heat pipe cooling down, and is carried out to the cooling down in the heating plate 107 and is repeated to the annealing box is carried out in the cooling hole 107.
Second embodiment:
on the basis of the first embodiment, please refer to fig. 5, fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
The invention provides a novel continuous steel pipe stress-relieving anaerobic annealing device which further comprises a supporting mechanism, wherein the supporting mechanism comprises a frame 201, an air cylinder 202, a C-shaped plate 203 and a connecting piece 204.
For the present embodiment, the supporting mechanism is disposed on the annealing box 102, and by disposing the supporting mechanism, the shielding plate 111 can be moved more conveniently.
The frame 201 is fixedly connected with the annealing box 102, the connecting piece 204 is rotationally connected with the frame 201, the connecting piece 204 is fixedly connected with the shielding plate 111, the air cylinder 202 is installed on the frame 201, the output end of the air cylinder 202 is fixedly connected with the C-shaped plate 203, the C-shaped plate 203 is provided with a supporting groove 205, the connecting piece 204 is in contact with the supporting groove 205, when the shielding plate 111 needs to be moved, only the air cylinder 202 needs to be opened, the output end of the air cylinder 202 drives the C-shaped plate 203 to move, the supporting groove 205 on the C-shaped plate 203 is in contact with the connecting piece 204 and supports against the connecting piece 204, so that the connecting piece 204 rotates on the frame 201, and the connecting piece 204 rotates to drive the shielding plate 111 to move, thereby being capable of more conveniently moving the shielding plate 111 to cover or keep away from the discharge port 119.
When the novel continuous steel pipe destressing anaerobic annealing device of the embodiment is used, the air cylinder 202 is only required to be opened when the shielding plate 111 needs to be moved, the output end of the air cylinder 202 drives the C-shaped plate 203 to move, the supporting groove 205 on the C-shaped plate 203 contacts the connecting piece 204 and supports the connecting piece 204, so that the connecting piece 204 rotates on the frame 201, and the connecting piece 204 rotates to drive the shielding plate 111 to move, so that the shielding plate 111 can be moved more conveniently to cover or be far away from the discharge hole 119.
Third embodiment:
on the basis of the second embodiment, please refer to fig. 6, fig. 6 is a front view of a third embodiment of the present invention.
The invention provides a novel continuous steel pipe stress-relieving anaerobic annealing device which further comprises a cover assembly, wherein the cover assembly comprises two support blocks 301, a cover plate 302 and a handle 303.
For the present embodiment, the cover assembly is disposed on the annealing box 102, and by disposing the cover assembly, the shielding gas can be prevented from flowing out.
The annealing box 102 is further provided with two auxiliary grooves 304, the two support blocks 301 are respectively connected with the corresponding auxiliary grooves 304 in a sliding manner, the cover plate 302 is fixedly connected with the two support blocks 301, the cover plate 302 is fixed on the annealing box 102 through the two support blocks 301, and the cover plate 302 is used for preventing protective gas from flowing out.
Secondly, the handle 303 is fixedly connected with the cover plate 302, and by arranging the handle 303, the cover plate 302 can be pulled more conveniently to drive the two support blocks 301 to move.
The novel continuous steel pipe destressing anaerobic annealing device of the embodiment is used, the cover plate 302 is fixed on the annealing box 102 through the two support blocks 301, the cover plate 302 is used for preventing protective gas from flowing out, and the handle 303 is arranged, so that the cover plate 302 can be pulled more conveniently to drive the two support blocks 301 to move.
Referring to fig. 7, fig. 7 is a step flow chart of a novel continuous steel pipe destressing anaerobic annealing method of the invention, and the invention also provides a novel continuous steel pipe destressing anaerobic annealing method, which adopts the novel continuous steel pipe destressing anaerobic annealing device, comprising the following steps:
firstly, a fixed amount of steel pipes are put into the annealing box 102 through the feed port 118 according to the regulation, and the steel pipes are flatly laid and stay on the heating plate 103;
then, the heating plate 103 is opened to heat the plurality of steel pipes, and after the heating is completed, the shielding plate 111 is moved away from the discharge hole 119 through the abutting mechanism;
as the power piece is opened, the power piece drives the supporting plate 109 to rotate through the disc 105, the supporting rod 106, the hollow block 107 and the connecting block 108, and the supporting plate 109 drives the heating plate 103 to rotate;
when the heating plate 103 rotates to incline, the steel pipes on the heating plate 103 naturally roll and are discharged from the discharge hole 119 into the cooling box 104 for cooling, then the power piece drives the supporting plate 109 to reset through the disc 105, the supporting rod 106, the hollow block 107 and the connecting block 108, and the next batch of steel pipes are added into the annealing box 102 for processing;
the above operation is repeated, so that the annealing treatment of the steel pipe can be continuously performed, the annealing efficiency of the steel pipe is improved, and the batch annealing treatment of the steel pipe is facilitated.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (7)
1. The novel continuous steel pipe destressing anaerobic annealing device comprises a base, an annealing box, a heating plate and a cooling box, wherein the annealing box and the cooling box are arranged on the base, a feed inlet and a protective gas inlet are arranged on the annealing box,
the device also comprises a material taking mechanism;
the feeding mechanism comprises a power piece, a disc, a supporting rod, a hollow block, a connecting block, a supporting plate, a shaft body and a shielding plate, wherein a discharge hole is further formed in the annealing box, two ends of the shaft body are rotatably connected with the annealing box, the supporting plate is fixedly connected with the shaft body, the heating plate is arranged on the supporting plate, the power piece is fixedly connected with the annealing box, the output end of the power piece is fixedly connected with the disc, one end of the connecting block is hinged to the supporting plate, the other end of the connecting block is hinged to the hollow block, a through hole is formed in the hollow block, one end of the supporting rod is fixedly connected with the disc, the other end of the supporting rod penetrates through the through hole, the supporting rod is eccentrically arranged on the disc, and the shielding plate is arranged at the discharge hole.
2. The novel continuous steel pipe destressing anaerobic annealing device according to claim 1, wherein,
the power piece comprises a support plate and a motor, wherein the support plate is fixedly connected with the annealing box, and the motor is arranged on the support plate.
3. The novel continuous steel pipe destressing anaerobic annealing device according to claim 2, wherein,
the material taking mechanism further comprises two sliding blocks, the annealing box is further provided with two sliding grooves, the two sliding blocks are fixedly connected with the hollow blocks, and the two sliding blocks are respectively and slidably connected with the corresponding sliding grooves.
4. The novel continuous steel pipe destressing anaerobic annealing device according to claim 3, wherein,
the material taking mechanism further comprises a protection plate, wherein the protection plate is fixedly connected with the support plate and is positioned at one end of the support plate away from the discharge hole.
5. The novel continuous steel pipe destressing anaerobic annealing device according to claim 4, wherein,
the novel continuous steel pipe destressing anaerobic annealing device further comprises a supporting mechanism, and the supporting mechanism is arranged on the annealing box.
6. The novel continuous steel pipe destressing anaerobic annealing device according to claim 5, wherein,
the supporting mechanism comprises a frame body, an air cylinder, a C-shaped plate and a connecting piece, wherein the frame body is fixedly connected with the annealing box, the connecting piece is rotationally connected with the frame body, the connecting piece is fixedly connected with the shielding plate, the air cylinder is installed on the frame body, the output end of the air cylinder is fixedly connected with the C-shaped plate, the C-shaped plate is provided with a supporting groove, and the connecting piece is contacted with the supporting groove.
7. A novel continuous steel pipe stress-relieving anaerobic annealing method, which adopts the novel continuous steel pipe stress-relieving anaerobic annealing device as claimed in claim 6, and is characterized by comprising the following steps:
firstly, a quantitative steel pipe enters the annealing box through the feeding hole according to a specified rule, and the steel pipe is flatly paved and stays on the heating plate;
then, the heating plate is opened to heat the plurality of steel pipes, and after the heating is completed, the shielding plate is moved away from the discharge hole through the supporting mechanism;
with the power piece opened, the power piece drives the supporting plate to rotate through the disc, the supporting rod, the hollow block and the connecting block, and the supporting plate drives the heating plate to rotate;
when the heating plate rotates to incline, the steel pipes on the heating plate naturally roll and are discharged from the discharge hole into the cooling box for cooling, and then the power piece drives the supporting plate to reset through the disc, the supporting rod, the hollow block and the connecting block, and the next batch of steel pipes are added into the annealing box for processing;
the above operation is repeated, so that the annealing treatment of the steel pipe can be continuously performed, the annealing efficiency of the steel pipe is improved, and the batch annealing treatment of the steel pipe is facilitated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310260829.4A CN116287644A (en) | 2023-03-17 | 2023-03-17 | Novel continuous steel pipe stress-relief anaerobic annealing device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310260829.4A CN116287644A (en) | 2023-03-17 | 2023-03-17 | Novel continuous steel pipe stress-relief anaerobic annealing device and method |
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| CN116287644A true CN116287644A (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310260829.4A Pending CN116287644A (en) | 2023-03-17 | 2023-03-17 | Novel continuous steel pipe stress-relief anaerobic annealing device and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353531A (en) * | 1979-08-03 | 1982-10-12 | Pont-A-Mousson S.A. | Process and installation for the handling and heat treatment of cast iron or steel pipes and tubes |
| CN204474723U (en) * | 2014-12-29 | 2015-07-15 | 嘉兴市昌龙机械设备有限公司 | Steel tube anneal furnace discharge device |
| KR101887963B1 (en) * | 2018-04-04 | 2018-08-13 | 동양철관 주식회사 | Heat treatment apparatus of steel pipe |
| CN212102927U (en) * | 2020-05-08 | 2020-12-08 | 江苏保利精工机电有限公司 | Novel continuous steel pipe destressing anaerobic annealing device |
| CN218538462U (en) * | 2022-11-28 | 2023-02-28 | 佛山市晟昕机械科技有限公司 | Automatic overturning and discharging device for stainless steel pipe |
-
2023
- 2023-03-17 CN CN202310260829.4A patent/CN116287644A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4353531A (en) * | 1979-08-03 | 1982-10-12 | Pont-A-Mousson S.A. | Process and installation for the handling and heat treatment of cast iron or steel pipes and tubes |
| CN204474723U (en) * | 2014-12-29 | 2015-07-15 | 嘉兴市昌龙机械设备有限公司 | Steel tube anneal furnace discharge device |
| KR101887963B1 (en) * | 2018-04-04 | 2018-08-13 | 동양철관 주식회사 | Heat treatment apparatus of steel pipe |
| CN212102927U (en) * | 2020-05-08 | 2020-12-08 | 江苏保利精工机电有限公司 | Novel continuous steel pipe destressing anaerobic annealing device |
| CN218538462U (en) * | 2022-11-28 | 2023-02-28 | 佛山市晟昕机械科技有限公司 | Automatic overturning and discharging device for stainless steel pipe |
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