CN114717403A - Oxygen-free continuous annealing furnace for producing high-precision seamless steel pipes - Google Patents
Oxygen-free continuous annealing furnace for producing high-precision seamless steel pipes Download PDFInfo
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- CN114717403A CN114717403A CN202210211426.6A CN202210211426A CN114717403A CN 114717403 A CN114717403 A CN 114717403A CN 202210211426 A CN202210211426 A CN 202210211426A CN 114717403 A CN114717403 A CN 114717403A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000000137 annealing Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 80
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000003546 flue gas Substances 0.000 claims abstract description 31
- 230000000694 effects Effects 0.000 claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000001914 filtration Methods 0.000 claims description 22
- 238000000746 purification Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 10
- 238000012546 transfer Methods 0.000 description 7
- 238000005406 washing Methods 0.000 description 7
- 239000000706 filtrate Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/106—Ring-shaped filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/02—Separating dispersed particles from gases, air or vapours by liquid as separating agent by passing the gas or air or vapour over or through a liquid bath
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention provides an oxygen-free continuous annealing furnace for high-precision seamless steel pipe production, and relates to the technical field of steel pipe heat treatment. This an anaerobic continuous annealing stove for production of high-accuracy seamless steel pipe, including base and furnace mantle, the top one side of heating seat is rotated and is connected the one end of pressing from both sides at the activity heating, the outside that the activity heating pressed from both sides is rotated and is connected with the connecting rod, the one end of connecting rod is rotated and is connected with the disc, the outside top of disc is connected with the connection rope through the rope fastening, the one end of connecting the rope runs through furnace mantle and fixed connection at the output of electric jar. Can put between activity heating clamp and heating seat through making the steel pipe, the activity heating presss from both sides because gravity whereabouts, and then realizes adjusting activity heating and presss from both sides and the steel pipe distance, conveniently adapts to the annealing of different diameter steel pipes, and degree of automation is high, realizes the high-efficient reuse of energy, improves energy utilization, plays purifying effect to the flue gas, reduces environmental pollution, and safety ring protects, improves operational environment's comfort level.
Description
Technical Field
The invention relates to the technical field of steel pipe heat treatment, in particular to an oxygen-free continuous annealing furnace for high-precision seamless steel pipe production.
Background
The heat treatment has the functions of improving the mechanical property of the material of the precision steel pipe, eliminating residual stress and improving the cutting processing property of the metal of the steel pipe. A traditional oxygen-free continuous annealing furnace adopts an oxidation-free continuous heat treatment furnace with protective gas, and can obtain an oxidation-free surface in the production processes of intermediate heat treatment and final finished product heat treatment of a high-precision seamless steel pipe, the adoption of the heat treatment process not only improves the quality of the steel pipe, but also overcomes the pollution of acid washing to the environment, a workpiece needing heat treatment is placed on a continuously-operating mesh belt, and is heated in a muffle tank, so that various alloy pipes, bars and the like can be treated at a lower cost, the yield per hour is about more than 0.3 ton, the protective gas generally adopts nitrogen with the purity of 99.99 percent, and the product achieves soft state, brightness, no oxidation and zero decarburization due to the fact that the workpiece is annealed in the protective atmosphere.
Traditional anaerobic continuous annealing furnace is in to seamless steel pipe heat treatment in-process, and it is comparatively troublesome to different diameter steel pipe annealing's regulation adaptation process that partial annealing furnace is to need artifical regulation heater and steel pipe distance, and the distance of partial annealing furnace heater and steel pipe is fixed in addition, and when the steel pipe heat treatment to the difference, heat transfer efficiency is not high, and the annealing furnace exhaust gas temperature is high, does not utilize surplus heat energy well, and is low to energy utilization.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the oxygen-free continuous annealing furnace for producing the high-precision seamless steel tubes, and solves the problems that the distance between a heater of the annealing furnace and the seamless steel tubes with different diameters is difficult to adjust and the heat energy utilization efficiency is low.
In order to achieve the purpose, the invention is realized by the following technical scheme: the anaerobic continuous annealing furnace for producing high-precision seamless steel pipes comprises a base and a furnace cover, wherein the edge of the base is fixedly connected with the bottom end of the furnace cover, steel pipe inlets and steel pipe outlets are arranged in the middle parts of the front side and the rear side of the furnace cover, and the middle part of the upper surface of the base is fixedly connected with a heating seat, one side of the top of the heating seat is rotatably connected with one end of the movable heating clamp, heating sheets are arranged on the opposite sides of the movable heating clamp and the heating seat, the outer side of the movable heating clamp is rotatably connected with a connecting rod, one end of the connecting rod is rotatably connected with a disc, the top of the outer side of the disc is connected with a connecting rope through a rope buckle, the middle part of the disc is rotatably connected with a supporting plate, one end of the supporting plate is fixedly connected on the inner wall of the furnace cover, one end of the connecting rope penetrates through the furnace cover and is fixedly connected to the output end of the electric cylinder, and the bottom of the electric cylinder is fixedly connected to the outer wall of the furnace cover.
Preferably, an opening formed between the heating seat and the movable heating clamp corresponds to the central axis direction of the inlet and the outlet of the steel pipe.
Preferably, the base is a box body with a hollow inner part, one side of the inner part of the base is connected with a fan, an input end of the fan is fixedly connected with a heat discharging pipe, an output end of the heat discharging pipe is fixedly connected with a first connecting pipe, one end of the first connecting pipe penetrates through a side wall of a heat exchanger shell and is connected with a heat exchanging bent pipe in an extending way, the bottom of the heat exchanger shell is fixedly connected with one side of the inner middle part of the base, one end of the heat exchanging bent pipe is fixedly connected with a second connecting pipe, the upper part and the lower part of the heat exchanger shell are both fixedly connected with a first water inlet and outlet pipe, one end of the second connecting pipe penetrates through a side wall of a filtering and accommodating shell and is connected with a flue gas purifying filter in an extending way, the flue gas purifying filter is positioned at the lower part of the filtering and accommodating shell, the outer side of the filtering and accommodating shell is connected with the other side of the inner middle part of the base, and the upper part and the lower part of the filtering and accommodating shell are both fixedly connected with a second water inlet and outlet pipe, one side of the upper part of the filtering containing shell is fixedly connected with an exhaust pipeline, and one side of the exhaust pipeline penetrates through the side wall of the furnace cover.
Preferably, the heat exchange elbow is an S-shaped elbow, and the flue gas purification filter is a ceramic filter element.
Preferably, the outside of stove cover is provided with the support frame, the equal sliding connection in top both sides of support frame has the bearing plate, two the bearing plate rotates respectively and connects the both ends at the guide roll to the output at the motor is run through a bearing plate and extends to connect to the one end of guide roll, the outside fixed connection of motor is in one side of a bearing plate.
Preferably, a plurality of rubber pads are distributed on the inner side wall of the inlet and outlet of the steel pipe at intervals, and the rubber pads form an annular lantern ring, so that the sealing effect is achieved, and the steel pipe can adapt to steel pipes with different diameters.
Preferably, a V-shaped groove is formed in the middle of the guide roller.
Preferably, the other side of the top of the heating seat and the other end of the movable heating clamp are both provided with a cushion pad.
Preferably, a through hole is formed in the side wall of the furnace cover, and a sealing gasket is arranged in the through hole and used for containing and sealing the connecting rope.
Preferably, the outer side wall of the furnace cover is provided with a fixed pulley, and the outer side of a roller of the fixed pulley is in contact with the connecting rope.
The working principle is as follows: the steel pipe can be placed between the movable heating clamp and the heating seat, the two heating sheets are used for heating, the output end of the electric cylinder is used for shrinkage movement, the connecting rope can be stretched to drive the disc to rotate, the connecting rod can drive the movable heating clamp to move upwards, the output end of the electric cylinder extends out, the movable heating clamp falls due to gravity, the distance between the movable heating clamp and the steel pipe is adjusted, the fan is used for absorbing smoke in the furnace cover, the smoke enters the heat exchange bent pipe after passing through the heat discharge pipe and the first connecting pipe, the upper portion and the lower portion of the heat exchanger shell are provided with first water inlet and drain pipes, the first water inlet and drain pipe at the upper portion is used as a water inlet pipe, the first water inlet and drain pipe at the lower portion is used as a water outlet pipe, tap water can be added into the heat exchanger shell, and the smoke in the heat exchange bent pipe can be subjected to heat exchange fully; after flue gas and running water heat transfer, through the second connecting pipe, in the gas cleaning filter gets into to filter and holds the shell, utilize the upper portion and the equal fixedly connected with second inlet and drain pipe in lower part that filter and hold the shell, can add filtrate or washing liquid entering filter and hold the shell through the second inlet and drain pipe on upper portion, utilize gas cleaning filter and the dual filtration of filtrate to purify, play purifying effect to the flue gas, can wash gas cleaning filter through adding the washing liquid simultaneously, can in time discharge filtrate or washing liquid through the second inlet and drain pipe of lower part.
The invention provides an oxygen-free continuous annealing furnace for producing high-precision seamless steel pipes. The method has the following beneficial effects:
1. the invention can facilitate the seamless steel pipe to penetrate through the furnace cover through the inlet and the outlet of the two steel pipes, so that the steel pipe can be placed between the movable heating clamp and the heating seat, the two heating sheets are used for heating, the connecting rope can be stretched by using the output end of the electric cylinder to make contraction motion, so as to drive the disc to rotate, so that the connecting rod can drive the movable heating clamp to move upwards, the output end of the electric cylinder is used for extending out, the movable heating clamp falls due to gravity, so as to adjust the distance between the movable heating clamp and the steel pipe, and the invention is convenient to adapt to the annealing treatment of the steel pipes with different diameters, high in automation degree and convenient to adjust and control.
2. According to the invention, the fan is used for absorbing the flue gas in the furnace cover, the flue gas enters the heat exchange elbow after passing through the heat discharge pipe and the first connecting pipe, the upper part and the lower part of the heat exchanger shell are respectively provided with the first water inlet and outlet pipe, the first water inlet and outlet pipe at the upper part is used as a water inlet pipe, the first water inlet and outlet pipe at the lower part is used as a water outlet pipe, tap water can be added into the heat exchanger shell, the tap water can fully exchange heat with the flue gas in the heat exchanger shell and the heat exchange elbow, the rapid energy transfer and the efficient reutilization are realized, and the energy utilization rate is improved.
3. According to the invention, after heat exchange is carried out between flue gas and tap water, the flue gas enters the filtering and containing shell through the second connecting pipe and the flue gas purification filter, the upper part and the lower part of the filtering and containing shell are fixedly connected with the second water inlet and outlet pipe, and filtering liquid or cleaning liquid can be added into the filtering and containing shell through the second water inlet and outlet pipe on the upper part, so that the flue gas is subjected to double filtering and purification by the flue gas purification filter and the filtering liquid, the flue gas purification effect is achieved, the environmental pollution is reduced, the safety and the environmental friendliness are realized, the comfort level of the working environment is improved, and meanwhile, the flue gas purification filter can be cleaned by adding the cleaning liquid, so that the daily maintenance and operation are facilitated.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a front view of the present invention;
FIG. 4 is a right side view of the present invention;
fig. 5 is a schematic view of the inside of the furnace mantle of the present invention.
Wherein, 1, a base; 2. a fan; 3. a heat exchanger shell; 4. a first water inlet and outlet pipe; 5. a heat exchange elbow; 6. a flue gas purifying filter; 7. a second water inlet and outlet pipe; 8. a filter housing case; 9. a first connecting pipe; 10. a second connecting pipe; 11. an exhaust duct; 12. a heating base; 13. a furnace mantle; 14. a movable heating clamp; 15. a heating plate; 16. a connecting rod; 17. a rope fastener; 18. a disc; 19. a support plate; 20. a fixed pulley; 21. connecting ropes; 22. an electric cylinder; 23. a heat exhaust pipe; 24. a motor; 25. a bearing plate; 26. a support frame; 27. steel pipe inlet and outlet; 28. and a guide roller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
Example (b):
as shown in fig. 1-5, the embodiment of the present invention provides an oxygen-free continuous annealing furnace for producing high-precision seamless steel pipes, comprising a base 1 and a furnace mantle 13, wherein the edge of the base 1 is fixedly connected to the bottom end of the furnace mantle 13, the middle parts of the front and rear sides of the furnace mantle 13 are respectively provided with a steel pipe inlet 27 and a steel pipe outlet 27, the middle part of the upper surface of the base 1 is fixedly connected with a heating base 12, one side of the top of the heating base 12 is rotatably connected to one end of a movable heating clamp 14, the opposite sides of the movable heating clamp 14 and the heating base 12 are respectively provided with a heating plate 15, the outer side of the movable heating clamp 14 is rotatably connected with a connecting rod 16, one end of the connecting rod 16 is rotatably connected with a disc 18, the top of the outer side of the disc 18 is connected with a connecting rope 21 through a rope buckle 17, the middle part of the disc 18 is rotatably connected with a supporting plate 19, one end of the supporting plate 19 is fixedly connected to the inner wall of the furnace mantle 13, one end of the connecting rope 21 penetrates through the furnace mantle 13 and is fixedly connected to the output end of an electric cylinder 22, the bottom of the electric cylinder 22 is fixedly connected to the outer wall of the furnace cover 13.
Two steel pipe exit 27 can make things convenient for seamless steel pipe to run through furnace mantle 13, make the steel pipe can put between activity heating clamp 14 and heating seat 12, utilize two heating plates 15 to heat, do the shrink motion through the output that utilizes electric jar 22, can stretch and connect rope 21 and then drive disc 18 and rotate, make connecting rod 16 can drive activity heating clamp 14 and upwards remove, the output that utilizes electric jar 22 stretches out, activity heating clamp 14 is because gravity whereabouts, and then realize adjusting activity heating clamp 14 and steel pipe distance, conveniently adapt to the annealing of different diameter steel pipes, degree of automation is high, be convenient for regulation and control.
The opening formed between the heating seat 12 and the movable heating clamp 14 corresponds to the central axis direction of the steel pipe inlet and outlet 27. The heating seat 12 and the movable heating clamp 14 are matched with the steel pipe inlet and outlet 27, so that the steel pipe can be placed between the heating seat 12 and the movable heating clamp 14 after entering the steel pipe inlet and outlet 27.
The base 1 is a box body with a hollow inner part, one side of the inner part of the base 1 is connected with a fan 2, the input end of the fan 2 is fixedly connected with a heat exhaust pipe 23, the output end of the heat exhaust pipe 23 is fixedly connected with a first connecting pipe 9, one end of the first connecting pipe 9 penetrates through one side wall of a heat exchanger shell 3 and is connected with a heat exchange bent pipe 5 in an extending way, the bottom of the heat exchanger shell 3 is fixedly connected with one side of the inner middle part of the base 1, one end of the heat exchange bent pipe 5 is fixedly connected with a second connecting pipe 10, the upper part and the lower part of the heat exchanger shell 3 are both fixedly connected with a first water inlet and outlet pipe 4, one end of the second connecting pipe 10 penetrates through one side wall of a filtering and accommodating shell 8 and is connected with a flue gas purifying filter 6 in an extending way, the flue gas purifying filter 6 is positioned at the lower part of the filtering and accommodating shell 8, the outer side of the filtering and accommodating shell 8 is connected with the other side of the inner middle part of the base 1, the upper part and the lower part of the filtering and accommodating shell 8 are both fixedly connected with a second water inlet and outlet pipe 7, an exhaust duct 11 is fixedly connected to one side of the upper portion of the filter accommodating case 8, and one side of the exhaust duct 11 penetrates through the side wall of the furnace cover 13.
Through utilizing fan 2 to absorb the flue gas in the furnace mantle 13, the flue gas passes through heat extraction pipe 23, get into in the heat transfer return bend 5 behind the first connecting pipe 9, the upper portion and the lower part of heat exchanger shell 3 all are provided with first water inlet and drain pipe 4, utilize first water inlet and drain pipe 4 on upper portion as the inlet tube, first water inlet and drain pipe 4 of lower part is as the outlet pipe, can add the running water to in the heat exchanger shell 3, the flue gas heat transfer fully of running water in heat exchanger shell 3 and in the heat transfer return bend 5, realize quick transmission and the high-efficient reuse of energy, energy utilization is improved.
After flue gas and running water heat transfer, through second connecting pipe 10, flue gas purification filter 6 gets into to filter and holds in the shell 8, utilize the upper portion and the equal fixedly connected with second inlet and drain pipe 7 in lower part that filter and hold shell 8, can add filtrate or washing liquid entering filter and hold in the shell 8 through second inlet and drain pipe 7 on upper portion, utilize flue gas purification filter 6 and filtrate double filtration purification, play purifying effect to the flue gas, reduce environmental pollution, safety and environmental protection, improve operational environment's comfort level, can wash flue gas purification filter 6 through adding the washing liquid simultaneously, the routine maintenance operation of being convenient for, filtrate or washing liquid can in time be discharged through second inlet and drain pipe 7 of lower part.
The heat exchange bent pipe 5 is an S-shaped bent pipe, so that the heat exchange effect is improved, and the flue gas purification filter 6 is a ceramic filter element, so that impurity suspended matters are effectively removed.
The outside of furnace mantle 13 is provided with support frame 26, and the equal sliding connection in top both sides of support frame 26 has bearing plate 25, and two bearing plates 25 rotate respectively and connect the both ends at guide roll 28 to guide roll 28's one end runs through a bearing plate 25 and extends the output of connecting at motor 24, and motor 24's outside fixed connection is in one side of a bearing plate 25.
The motor 24 can drive the guide rollers 28 to rotate, and the plurality of guide rollers 28 can drive the seamless steel pipe to be conveyed into the furnace cover 13 for heat treatment, so that the steel pipe transportation is facilitated.
A plurality of rubber pads are distributed on the inner side wall of the steel pipe inlet and outlet 27 at intervals, and form an annular lantern ring to play a role in sealing and adapt to steel pipes with different diameters.
The guide roller 28 is provided with a V-shaped groove in the middle. The V-shaped groove is arranged, so that the steel pipe is convenient to limit, the steel pipe is prevented from deviating on the guide roller 28, the seamless steel pipe is ensured to accurately penetrate through the steel pipe inlet and outlet 27, and the steel pipe can conveniently enter and exit the furnace cover 13.
The other side of the top of the heating seat 12 and the other end of the movable heating clamp 14 are both provided with a buffer pad. Reducing the impact of the movable heating clamp 14 on the heating base 12.
A through hole is provided on the side wall of the furnace housing 13, and a gasket is provided in the through hole for accommodating and sealing the connection cord 21. The outer side wall of the furnace cover 13 is provided with a fixed pulley 20, and the outer side of a roller of the fixed pulley 20 is contacted with a connecting rope 21. The fixed pulley 20 is arranged to play a guiding role, and abrasion of the connecting rope 21 to a sealing pad in the through hole is reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A anaerobic continuous annealing stove for production of high-accuracy seamless steel pipe, including base (1) and furnace mantle (13), its characterized in that: the edge fixed connection of base (1) is in the bottom of furnace mantle (13), both sides middle part all is provided with steel pipe import and export (27) around furnace mantle (13) to the upper surface middle part fixedly connected with heating seat (12) of base (1), the top one side of heating seat (12) is rotated and is connected in the one end of activity heating clamp (14), the opposite side of activity heating clamp (14) and heating seat (12) all is provided with heating plate (15), the outside of activity heating clamp (14) is rotated and is connected with connecting rod (16), the one end of connecting rod (16) is rotated and is connected with disc (18), the outside top of disc (18) is connected with connection rope (21) through rope fastening (17), the middle part of disc (18) is rotated and is connected with backup pad (19), the one end fixed connection of backup pad (19) is on the inner wall of furnace mantle (13), one end of the connecting rope (21) penetrates through the furnace cover (13) and is fixedly connected to the output end of the electric cylinder (22), and the bottom of the electric cylinder (22) is fixedly connected to the outer wall of the furnace cover (13).
2. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: an opening formed between the heating seat (12) and the movable heating clamp (14) corresponds to the central axis direction of the steel pipe inlet and outlet (27).
3. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: the base (1) is a hollow box body, one side of the interior of the base (1) is connected with a fan (2), an input end of the fan (2) is fixedly connected with a heat discharging pipe (23), an output end of the heat discharging pipe (23) is fixedly connected with a first connecting pipe (9), one end of the first connecting pipe (9) penetrates through one side wall of a heat exchanger shell (3) and is connected with a heat exchanging bent pipe (5) in an extending mode, the bottom of the heat exchanger shell (3) is fixedly connected to one side of the middle of the interior of the base (1), one end of the heat exchanging bent pipe (5) is fixedly connected with a second connecting pipe (10), the upper portion and the lower portion of the heat exchanger shell (3) are both fixedly connected with a first water inlet and outlet pipe (4), one end of the second connecting pipe (10) penetrates through one side wall of a filtering accommodating shell (8) and is connected with a flue gas purifying filter (6) in an extending mode, and the flue gas purifying filter (6) is located at the lower portion of the filtering accommodating shell (8), the inside middle part opposite side at base (1) is connected in the outside that the filtration held shell (8), the filtration holds the equal fixedly connected with second of upper portion and the lower part of shell (8) and advances drain pipe (7), filtration holds upper portion one side fixedly connected with exhaust duct (11) of shell (8), the lateral wall of furnace mantle (13) is run through to one side of exhaust duct (11).
4. The oxygen-free continuous annealing furnace for high-precision seamless steel tube production according to claim 3, characterized in that: the heat exchange bent pipe (5) is an S-shaped bent pipe, and the flue gas purification filter (6) is a ceramic filter element.
5. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: the outside of stove cover (13) is provided with support frame (26), the equal sliding connection in top both sides of support frame (26) has bearing plate (25), two bearing plate (25) rotate respectively and connect the both ends at guide roll (28) to the output at motor (24) is run through one bearing plate (25) and is extended to the one end of guide roll (28), the outside fixed connection of motor (24) is in one side of one bearing plate (25).
6. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: a plurality of rubber pads are distributed on the inner side wall of the steel pipe inlet and outlet (27) at intervals, and the rubber pads form an annular lantern ring, so that the sealing effect is achieved, and the steel pipe inlet and outlet can adapt to steel pipes with different diameters.
7. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 5, characterized in that: the middle part of the guide roller (28) is provided with a V-shaped groove.
8. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: the other side of the top of the heating seat (12) and the other end of the movable heating clamp (14) are both provided with cushions.
9. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: the side wall of the furnace cover (13) is provided with a through hole, and a sealing gasket is arranged in the through hole and used for containing and sealing the connecting rope (21).
10. The oxygen-free continuous annealing furnace for the production of high-precision seamless steel pipes according to claim 1, characterized in that: the outer side wall of the furnace cover (13) is provided with a fixed pulley (20), and the outer side of a roller of the fixed pulley (20) is in contact with a connecting rope (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211426.6A CN114717403B (en) | 2022-03-04 | 2022-03-04 | Anaerobic continuous annealing furnace for producing high-precision seamless steel tube |
Applications Claiming Priority (1)
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132449A (en) * | 1994-11-10 | 1996-05-28 | Sumitomo Kinzoku Plantec Kk | Pressure-reduction type heat-shrinkable tube heating apparatus |
| CN204741575U (en) * | 2015-04-29 | 2015-11-04 | 湖州鑫浩特材科技有限公司 | Steel pipe make -up machine is heating device again |
| CN209672855U (en) * | 2019-04-04 | 2019-11-22 | 广东山摩新材料科技有限公司 | The fume treatment mechanism of the automatic cellar furnace of lithium battery saggar production |
| CN213120061U (en) * | 2020-07-30 | 2021-05-04 | 常州首创管业有限公司 | Heating furnace for producing cold-drawn precise seamless steel tube |
| CN215404343U (en) * | 2021-01-14 | 2022-01-04 | 天津爱信热处理有限公司 | Metal heat treatment follow-up annealing device |
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- 2022-03-04 CN CN202210211426.6A patent/CN114717403B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08132449A (en) * | 1994-11-10 | 1996-05-28 | Sumitomo Kinzoku Plantec Kk | Pressure-reduction type heat-shrinkable tube heating apparatus |
| CN204741575U (en) * | 2015-04-29 | 2015-11-04 | 湖州鑫浩特材科技有限公司 | Steel pipe make -up machine is heating device again |
| CN209672855U (en) * | 2019-04-04 | 2019-11-22 | 广东山摩新材料科技有限公司 | The fume treatment mechanism of the automatic cellar furnace of lithium battery saggar production |
| CN213120061U (en) * | 2020-07-30 | 2021-05-04 | 常州首创管业有限公司 | Heating furnace for producing cold-drawn precise seamless steel tube |
| CN215404343U (en) * | 2021-01-14 | 2022-01-04 | 天津爱信热处理有限公司 | Metal heat treatment follow-up annealing device |
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| CN114717403B (en) | 2024-05-17 |
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