CN107299216B - Steel rolling heating furnace - Google Patents
Steel rolling heating furnace Download PDFInfo
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- CN107299216B CN107299216B CN201710473971.1A CN201710473971A CN107299216B CN 107299216 B CN107299216 B CN 107299216B CN 201710473971 A CN201710473971 A CN 201710473971A CN 107299216 B CN107299216 B CN 107299216B
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- heating
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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
- C21D9/70—Furnaces for ingots, i.e. soaking pits
Abstract
The invention discloses a steel rolling heating furnace, which comprises a heating furnace body, wherein a heat insulation plate is fixedly arranged in the heating furnace body, the heating furnace body is sequentially divided into a preheating chamber, a heating chamber and a soaking chamber by the heat insulation plate from left to right, transmission rollers are respectively arranged on two sides of the heating furnace body and the upper end of the heat insulation plate, thermocouples are respectively embedded on one side of the inner walls of the preheating chamber, the heating chamber and the soaking chamber, a heating pipe is embedded at the inner bottom end of the heating chamber, a steam turbine is fixedly arranged at the inner bottom end of the left side of a heat transfer pipeline, a rotating shaft of the steam turbine penetrates through the heat transfer pipeline through a sealing bearing and is in transmission connection with a generator, a heat exchange pipe is coiled. The heating device has the advantages of simple and reasonable structural design, convenient operation, safety, stability, energy conservation, environmental protection, good heating effect, uniform heating, wide application range and contribution to popularization and promotion.
Description
Technical Field
The invention belongs to the technical field of steel rolling production, and particularly relates to a steel rolling heating furnace.
Background
In the prior art, the hearth of a steel rolling heating furnace comprises: a preheating section, a heating section and a soaking section. The furnace temperature at the feed end is a preheating section, and the effect of the preheating section is that the billet is preheated by utilizing the heat of furnace gas, and the billet rises at a constant speed in the heating process; the heating section is a main heating section, and the temperature of furnace gas is higher, so that the rapid heating is realized; the soaking section is positioned at the discharging end to ensure the uniform integral temperature of the discharged material blank. Because the heating action of the steel billet in the heating furnace is different, the temperature requirements of different stages in the heating furnace are different, and the stability of steel rolling heating can be ensured only by simultaneously working a plurality of groups of heating mechanisms, so that the manufacturing cost is increased, and meanwhile, the energy consumption is higher. The heating section is a main heating section, the furnace temperature of the heating section is increased to carry out intensified heating on the steel billet, the furnace temperature of the heating section is generally about 1200 ℃, the steel billet is mainly heated by radiation heat transfer, the temperature of the outer surface of the steel billet reaches the requirement of rolling due to the intensified heating on the steel billet, but the temperature inside the steel billet is far lower than the surface temperature to form a 'hard core', and a section temperature difference is formed on the cross section of the steel billet. The temperature of a rolled steel billet generally requires that the surface temperature of the steel billet is about 1200-1250 ℃, the temperature difference of the cross section is less than or equal to 30 ℃, the steel billet must be heated to meet the rolling requirement, the temperature of the cross section is uniform, the temperature difference of the cross section is less than or equal to 30 ℃, the function of a soaking section is to heat the steel billet to reduce the temperature difference of the cross section of the steel billet, and the temperature of a hearth of the soaking section is generally about 1280 ℃. As the rolling mill is improved, the rolling capacity is increased, so that the heating capacity of the original heating furnace cannot meet the requirement of the improved rolling mill on productivity. The investment is too large for reconstructing a new heating furnace, and the new heating furnace cannot be implemented generally. However, if the original heating furnace is continuously used for production, the blank of the heating furnace is heated unevenly, and the center of the blank cannot be completely burned, the condition that the rolling mill is heated and stops rolling after being heated can often occur, and the production is influenced. Is not beneficial to wide popularization and dissemination.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a steel rolling heating furnace.
In order to achieve the purpose, the invention adopts the following technical scheme:
a steel rolling heating furnace comprises a heating furnace body, wherein a heat insulation plate is fixedly arranged in the heating furnace body, the heating furnace body is sequentially divided into a preheating chamber, a heating chamber and a soaking chamber from left to right by the heat insulation plate, transmission rollers are respectively arranged on two sides of the heating furnace body and the upper end of the heat insulation plate, thermocouples are respectively inlaid on one sides of the inner walls of the preheating chamber, the heating chamber and the soaking chamber, the heating pipe is inlaid at the bottom end in the heating chamber, the top ends of the heating chamber and the soaking chamber are fixedly connected through a heat transfer pipeline, a steam turbine is fixedly arranged at the bottom end in the left side of the heat transfer pipeline, a rotating shaft of the steam turbine penetrates through the heat transfer pipeline through a sealing bearing and is connected with a generator, a heat exchange pipe is coiled on the surface in the left side of the heat transfer, and the bottom end of the front surface of the heating furnace body is provided with water inlet pipes which are respectively communicated with the preheating chamber, the heating chamber and the soaking chamber.
Preferably, four groups of supporting legs with shock-absorbing rubber pads are symmetrically installed at the corners of the bottom of the heating furnace body, and an epoxy resin anti-corrosion layer and a glass fiber heat-insulating layer are sprayed on the surface of the heating furnace body.
Preferably, warm water is filled in the preheating chamber, the heating chamber and the heat equalizing chamber, and the front face of the heating furnace body is provided with perspective windows with scales on the outer sides of the preheating chamber, the heating chamber and the heat equalizing chamber.
Preferably, the heat transfer pipeline is U-shaped, and an air inlet at the bottom of the left end of the heat transfer pipeline faces one side of the steam turbine.
Preferably, four groups of driving rollers are arranged on the same horizontal plane, and each driving roller comprises an upper roller and a lower roller, wherein the surfaces of the upper roller and the lower roller are provided with anti-skid protrusions.
Preferably, the front middle part of the heating furnace body is inlaid with a PLC control electric box, and the upper end of the surface of the PLC control electric box is inlaid with an LED display screen.
Preferably, the thermocouple, the heating pipe, the generator and the circulating pump are electrically connected with the PLC control electric box through leads.
Preferably, the tip and the external water supply system fixed connection of inlet tube, and the internally mounted of inlet tube have with PLC control electronic box electric connection's solenoid valve.
The invention has the technical effects and advantages that: compared with the prior art, the steel rolling heating furnace provided by the invention can ensure the uniformity of steel rolling heating through steam heating in the heating furnace body, because the heat quantity is more uniform after water heating, meanwhile, the water heating temperature is kept for a long time, the heat transfer pipeline can transfer the water vapor generated by the heating chamber to the soaking chamber to ensure the stable and uniform heat quantity in the soaking chamber, meanwhile, the water vapor generated by the heating chamber can push a steam turbine to rotate through the steam turbine, thereby driving a generator to work as a PLC control electric box for continuous charging, realizing the functions of energy saving and environmental protection, moreover, a heat exchange pipe on the surface of the heat transfer pipeline can transfer part of heat quantity to the preheating chamber for preheating steel rolling under the action of a circulating pump, a thermocouple can sense the temperature in the preheating chamber, the heating chamber and the soaking chamber in real time and display on an LED display screen on the surface of the heating chamber after the, the invention has the advantages of simple and reasonable structural design, convenient operation, safety, stability, energy conservation, environmental protection, good heating effect, uniform heating and wide application range, and is beneficial to popularization and application.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a cross-sectional view of the present invention.
In the figure: the device comprises a heating furnace body 1, a heat insulation plate 2, a preheating chamber 3, a heating chamber 4, a heat equalizing chamber 5, a thermocouple 6, a heating pipe 7, a driving roller 8, a heat transfer pipeline 9, a steam turbine 10, a generator 11, a heat exchange pipe 12, a circulating pump 13, a PLC control electronic box 14 and a water inlet pipe 15.
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. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. 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.
The invention provides a steel rolling heating furnace as shown in figures 1-2, which comprises a heating furnace body 1, wherein a heat insulation plate 2 is fixedly arranged inside the heating furnace body 1, the heating furnace body 1 is sequentially divided into a preheating chamber 3, a heating chamber 4 and a soaking chamber 5 from left to right by the heat insulation plate 2, transmission rollers 8 are respectively arranged at two sides of the heating furnace body 1 and the upper end of the heat insulation plate 2, thermocouples 6 are respectively embedded at one side of the inner walls of the preheating chamber 3, the heating chamber 4 and the soaking chamber 5, a heating pipe 7 is embedded at the bottom end inside the heating chamber 4, the top ends of the heating chamber 4 and the soaking chamber 5 are fixedly connected through a heat transfer pipeline 9, a steam turbine 10 is fixedly arranged at the bottom end inside the left side of the heat transfer pipeline 9, a rotating shaft of the steam turbine 10 penetrates through the heat transfer pipeline 9 through a sealing bearing to be in transmission connection with, the input end of the heat exchange tube 12 is fixedly connected with a circulating pump 13, the output end of the heat exchange tube 12 penetrates through the heating furnace body 1 and extends into the preheating chamber 3, and the bottom end of the front face of the heating furnace body 1 is provided with a water inlet tube 15 which is respectively communicated with the preheating chamber 3, the heating chamber 4 and the heat equalizing chamber 5.
Furthermore, four groups of supporting legs with shock-absorbing rubber pads are symmetrically arranged at the corners of the bottom of the heating furnace body 1, and an epoxy resin anti-corrosion layer and a glass fiber heat-insulating layer are sprayed on the surface of the heating furnace body 1.
Furthermore, warm water is filled in the preheating chamber 3, the heating chamber 4 and the heat equalizing chamber 5, and the front face of the heating furnace body 1 is provided with perspective windows with scales on the outer sides of the preheating chamber 3, the heating chamber 4 and the heat equalizing chamber 5.
Further, the heat transfer pipeline 9 is U-shaped, and the air inlet at the bottom of the left end of the heat transfer pipeline 9 faces one side of the steam turbine 10.
Furthermore, four groups of driving rollers 8 are arranged on the same horizontal plane, and the driving rollers 8 comprise upper and lower rollers with anti-skid protrusions on the surfaces.
Further, the front middle part of the heating furnace body 1 is inlaid with a PLC control electric box 14, and the upper end of the surface of the PLC control electric box 14 is inlaid with an LED display screen.
Further, the thermocouple 6, the heating pipe 7, the generator 11 and the circulating pump 13 are electrically connected with a PLC control electric box 14 through leads.
Further, the tip and the external water supply system fixed connection of inlet tube 15, and the internally mounted of inlet tube 15 have with PLC control electronic box 14 electric connection's solenoid valve.
Compared with the prior art, the steel rolling heating furnace provided by the invention can ensure the uniformity of steel rolling heating through steam heating in the heating furnace body 1, because the heat quantity is relatively uniform after water heating, meanwhile, the water heating temperature is kept for a long time, the heat transfer pipeline 9 can transfer the water vapor generated in the heating chamber 4 to the soaking chamber 5 to ensure the stable and balanced heat quantity in the soaking chamber 5, meanwhile, the water vapor generated in the heating chamber 4 can push the steam turbine 10 to rotate through the steam turbine 10, so as to drive the generator 11 to be used as a PLC control electric box 14 to continuously charge, the energy-saving and environment-friendly effects can be realized, the heat exchange pipe 12 on the surface of the heat transfer pipeline 9 can transfer a part of heat quantity to the preheating chamber 3 to preheat the steel rolling under the action of the circulating pump 13, the thermocouple 6 can sense the temperature in the preheating chamber 3, the heating chamber 4 and the soaking chamber 5 in real time and transfer the temperature to the LED display screen on the surface of the, the invention has the advantages of simple and reasonable structural design, convenient operation, safety, stability, energy conservation, environmental protection, good heating effect, uniform heating, wide application range and contribution to popularization and popularization.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. The utility model provides a steel rolling heating furnace, includes heating furnace body (1), its characterized in that: the heating furnace is characterized in that the heating furnace body (1) is fixedly provided with a heat insulation plate (2), the heating furnace body (1) is sequentially separated into a preheating chamber (3), a heating chamber (4) and a soaking chamber (5) from left to right by the heat insulation plate (2), driving rollers (8) are respectively arranged on the two sides of the heating furnace body (1) and the upper end of the heat insulation plate (2), thermocouples (6) are respectively embedded on one sides of the inner walls of the preheating chamber (3), the heating chamber (4) and the soaking chamber (5), heating pipes (7) are embedded at the bottom end of the inside of the heating chamber (4), the top ends of the heating chamber (4) and the soaking chamber (5) are fixedly connected through heat transfer pipes (9), a steam turbine (10) is fixedly arranged at the bottom end of the left side of the heat transfer pipes (9), and a rotating shaft of the steam turbine (10) is in transmission, a heat exchange pipe (12) is coiled on the left side surface of the heat transfer pipeline (9), the input end of the heat exchange pipe (12) is fixedly connected with a circulating pump (13), the output end of the heat exchange pipe (12) penetrates through the heating furnace body (1) and extends into the preheating chamber (3), and a water inlet pipe (15) which is respectively communicated with the preheating chamber (3), the heating chamber (4) and the soaking chamber (5) is arranged at the bottom end of the front side of the heating furnace body (1); a PLC control electric box (14) is embedded in the middle of the front face of the heating furnace body (1), and an LED display screen is embedded in the upper end of the surface of the PLC control electric box (14);
the thermocouple (6), the heating pipe (7), the generator (11) and the circulating pump (13) are electrically connected with the PLC control electric box (14) through leads; the tip and the external water supply system fixed connection of inlet tube (15), and the internally mounted of inlet tube (15) have with PLC control electronic box (14) electric connection's solenoid valve.
2. The steel rolling heating furnace according to claim 1, characterized in that: four groups of supporting legs with shock-absorbing rubber pads are symmetrically arranged at the corners of the bottom of the heating furnace body (1), and an epoxy resin anti-corrosion layer and a glass fiber heat-insulating layer are sprayed on the surface of the heating furnace body (1).
3. The steel rolling heating furnace according to claim 1, characterized in that: the inside of preheating chamber (3), heating chamber (4) and soaking chamber (5) all is equipped with the warm water, and the front of heating furnace body (1) is located the outside of preheating chamber (3), heating chamber (4) and soaking chamber (5) and all is equipped with the perspective window of taking the scale.
4. The steel rolling heating furnace according to claim 1, characterized in that: the heat transfer pipeline (9) is U-shaped, and an air inlet at the bottom of the left end of the heat transfer pipeline (9) is over against one side of the steam turbine (10).
5. The steel rolling heating furnace according to claim 1, characterized in that: four groups of driving rollers (8) are arranged on the same horizontal plane, and the driving rollers (8) comprise upper and lower rollers with anti-skid protrusions on the surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710473971.1A CN107299216B (en) | 2017-06-21 | 2017-06-21 | Steel rolling heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710473971.1A CN107299216B (en) | 2017-06-21 | 2017-06-21 | Steel rolling heating furnace |
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| Publication Number | Publication Date |
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| CN107299216A CN107299216A (en) | 2017-10-27 |
| CN107299216B true CN107299216B (en) | 2021-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710473971.1A Active CN107299216B (en) | 2017-06-21 | 2017-06-21 | Steel rolling heating furnace |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115046222B (en) * | 2022-05-26 | 2024-01-12 | 阿尔法（江苏）重工科技有限公司 | Furnace chamber capable of automatically adjusting PID (proportion integration differentiation) by gas in pulverizing system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202322947U (en) * | 2011-11-21 | 2012-07-11 | 重庆钢铁(集团)有限责任公司 | Steel rolling heating furnace |
| CN202558899U (en) * | 2012-05-15 | 2012-11-28 | 天津市金亿德特钢有限公司 | Novel billet heating furnace |
| CN103352115A (en) * | 2013-07-18 | 2013-10-16 | 上海宝钢节能技术有限公司 | Steel rolling heating furnace |
| CN203917794U (en) * | 2014-05-29 | 2014-11-05 | 宁波北仑一特特殊钢有限公司 | A kind of heating furnace |
| CN105132666A (en) * | 2014-05-30 | 2015-12-09 | 宝山钢铁股份有限公司 | Pickling-free continuous annealing furnace reducing gas recycle use system and use method thereof |
| CN203976878U (en) * | 2014-08-20 | 2014-12-03 | 丁国民 | Electric heat treating furnace at the bottom of steel pipe energy-saving formula roller |
| CN104561515B (en) * | 2015-01-26 | 2016-10-05 | 河北星烁锯业股份有限公司 | Continuous way bar plate heating stove and heating means thereof |
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| CN107299216A (en) | 2017-10-27 |
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