CN100447261C - Continuous annealing furnace to utilize afterheat of strip steel in the same casing - Google Patents
Continuous annealing furnace to utilize afterheat of strip steel in the same casing Download PDFInfo
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- CN100447261C CN100447261C CNB2006101246127A CN200610124612A CN100447261C CN 100447261 C CN100447261 C CN 100447261C CN B2006101246127 A CNB2006101246127 A CN B2006101246127A CN 200610124612 A CN200610124612 A CN 200610124612A CN 100447261 C CN100447261 C CN 100447261C
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 32
- 239000010959 steel Substances 0.000 title claims abstract description 32
- 238000000137 annealing Methods 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 95
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 33
- 239000002918 waste heat Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present invention discloses one kind of continuous annealing furnace to utilize afterheat of strip steel in the same casing. The continuous annealing furnace includes furnace body, heating unit, strip steel feeding port and strip steel discharging port. The furnace body includes heating and heat insulating casing, high temperature section cooling and preheating casing, middle temperature section cooling and preheating casing, channel and low temperature section cooling and preheating casing, and has strip steel driving wheel train and strip steel discharging wheel train inside both the high temperature section cooling and preheating casing and the middle temperature section cooling and preheating casing. There is also one liquid heat exchange tank for strip steel to be soaked inside in front of the furnace body. The present invention can utilize the afterheat of strip steel obviously.
Description
Technical field
The present invention relates to annealing furnace, especially relate to a kind of with the continuous annealing furnace that utilizes band steel cooling waste heat in the casing.
Technical background
For obtaining required performance, cold rolled strip generally need carry out anneal.The band Heat Treatment Of Steel relates to warm process, is made up of processes such as preheating, heating, (soaking) insulation, coolings.Now Chang Yong band steel hearth type heat treatment is divided into two kinds by mode of operation: a kind of is the interval type stove, and for example bell furnace relates to warm process in same inner cover, general without preheating process, and the band steel is web-like and overlays in the cover; Another kind is a continuous furnace, belongs to constant temperature oven, and preheating, heating, insulation, cooling divide to be carried out in different casings, and the band steel is continuous band-shaped and advances from preheating section, goes out from temperature descending section.
The advantage of existing bell furnace is that equipment cost is lower, workpiece is annealed afterwards required good percentage elongation, maintenance is more convenient, resistance to air loss good, shortcoming is as follows: 1, interval type adds ratio of specific heat continous way heating power consumption, and the waste heat of workpiece temperature-fall period can not get effective utilization basically, because web-like stacks, for shortening temperature fall time, generally all will dispose wind, water-cooling cover, it is supporting to need water circulating pump group, cooling, stocking system to give; Even add the special-purpose cooling table that disposes blower fan in addition; 2, lack the distinctive workpiece of continuous oven and in stove, can obtain the strong this technology of hot-drawn; Can not the random arrangement cleaning, finishing, cold drawn rectifying, equipment such as Electrostatic greasing, though can configuration separately before and after thermal treatment, than having increased operation and cost, and plate shape good not as continuous oven.
The relative merits of existing continuous furnace have been compared part with bell furnace opposite, but, the waste heat of temperature-fall period is by the outer air channel of the case that adds especially (air channel must the more high-power recirculation blower of configuration) preheating section and temperature descending section to be linked up, by blower fan force that protective atmosphere circulates in the stove between preheating section and temperature descending section, with the realization heat exchange; But practice shows that this method utilization rate of waste heat is not high, and major cause is: 1, air channel gas unavoidably has calorific loss outside case, and the heat waste rate is not low; 2, be heat-conducting medium only basically, so heat transfer efficiency is not high with the not really high protective atmosphere of mobile temperature; 3, all only each carries out in one, two casing for cooling, preheating, can not utilize to many gradients temperature head, and since case air channel gas heat waste rate is big outward, causing correspondence that many casings are set, to carry out heat exchange action little; Also consume energy when 4, recirculation blower moves, and easily cause the leakage of protective atmosphere; And just entered the workpiece of cooling preheating casing by the heat tracing casing, the protective atmosphere that the stream of air channel from case outside comes cooling too fast, make non-solid solution handle the required unit elongation of workpiece and be not so good as bell furnace.
Summary of the invention
The purpose of this invention is to provide a kind of with the continuous annealing furnace that utilizes band steel cooling waste heat in the casing; it is remarkable that it can significantly improve utilization rate of waste heat, the energy-saving effect of steel band temperature-fall period; it has reduced equipment manufacturing cost, has improved the annealing quality of workpiece, has reduced working cost and the discharging of heat in the atmosphere of workshop; reduced noise; can improve workman's operating condition, reach the purpose of protection environment.
The object of the present invention is achieved like this: the present invention includes body of heater, heating unit, forward (FWD) port and go out the band edge mouth, feature is that body of heater is made up of heating and insulation casing, high temperature section cooling preheating casing, middle-temperature section cooling preheating casing, passage and low-temperature zone cooling preheating casing, heating unit is located in heating and the insulation casing, between heating and insulation casing and high temperature section cooling preheating casing, high temperature section cooling preheating casing and middle-temperature section cooling preheating casing, there is passage to connect, forward (FWD) port and go out the front end that the band edge mouth is installed in low-temperature zone cooling preheating casing; The height direction four lines belt wheel of all having arranged in heating and insulation casing, high temperature section cooling preheating casing and middle-temperature section cooling preheating casing, the contiguous up and down casing upper end position that is arranged in of last two row, the contiguous up and down casing lower end position that is arranged in of following two row, last two row are arranged with following two line interlacings, and middle two rows wheel footpath is slightly little, the forward (FWD) wheel of first row and the third line is formed the forward (FWD) train, second row and the pulley of fourth line form the band train, contiguous forward (FWD) take turns and the wheel face of pulley between leave the gap with as tape track; The band steel is from the forward (FWD) port forward (FWD) of low-temperature zone cooling preheating casing, earlier by low-temperature zone cooling preheating casing, walk around the forward (FWD) train beginning roller of middle-temperature section cooling preheating casing front end then, walk around in the middle-temperature section cooling preheating casing again and high temperature section cooling preheating casing interior and heating and the intravital forward (FWD) train of insulation can, last forward (FWD) train end roller place changed course to heating and insulation box back, transfer band at this to by forward (FWD), going out band walked around before this in that heating and insulation can are intravital and went out to be with train beginning roller, walk around in heating and the insulation casing more successively and in the high temperature section cooling preheating casing and middle-temperature section cooling preheated tank is intravital goes out to be with train, that walks around middle-temperature section cooling preheating casing front end goes out to be with train end roller, by low-temperature zone cooling preheating casing, the band edge mouth that goes out from low-temperature zone cooling preheating casing goes out band at last, goes out to be with direction opposite with the forward (FWD) direction at the body of heater front end.
Heating and insulation casing, high temperature section cooling preheating casing and the intravital forward (FWD) train of middle-temperature section cooling preheated tank be positioned over out the band train above.
Be equipped with at the front end of body of heater and allow the band steel go out band back submerged liquid heat-exchange groove.If can entering, fluid temperature height, forward (FWD) absorb heat in the groove.
The forward (FWD) port of low-temperature zone cooling preheating casing front end with go out the band edge mouth and be step-like, and the forward (FWD) port go out the band edge mouth above.
Above high temperature section cooling preheated tank is intravital, be provided with adjacent forward (FWD) wheel to be used to pinch the auxiliary feed rolls of band steel.
The characteristics of annealing furnace of the present invention are: with the forward (FWD) train with go out with train disposed adjacent but in the same casing that links up and down at several difference in functionalitys, and forward (FWD) port and go out the same direction of band edge mouth at body of heater, two-port staggers.Proposed forward (FWD) in addition and gone out band also to utilize liquid to carry out heat exchange for medium.
Therefore, the present invention has following advantage:
1, can significantly improve utilization rate of waste heat, the obvious energy conservation of steel band temperature-fall period.Compared with the prior art, it is about 90% that burner hearth of the present invention effectively utilizes area to improve, and this is to energy-conservation favourable; Make full use of the waste heat of workpiece temperature-fall period, reduced the consumption of the energy.Cold rolled annealed now power consumption accounts for industry power consumption more than 60%, and for continuous oven, the heat major part of being supplied is absorbed by workpiece, so waste heat calorific value amount is a lot.In high temperature, middle temperature, low-temperature zone cooling preheating casing, the band that goes out that insulation finishes utilizes protective atmosphere, train, lagging material etc. in temperature difference forward (FWD) that heat transferred is contiguous and the casing, and this intravital heat transfer efficiency height of case, reason is; (1), eliminated the heat waste in the outer air channel of prior art case, usable afterheat calorific value amount improved greatly; (2), contiguous into and out of band, can make full use of the width of cloth and penetrate heat transfer; High temperature, middle-temperature section envrionment temperature are high and than higher, and forward (FWD) can obtain heat by conduction from the wheel face of contact with it; (3), preheating cooling is divided into several sections of high temperature, middle temperature, low temperature, the contiguous forward (FWD) of each point all has temperature head with going out to be with in every section, also just can carry out heat exchange, like this, rear end at the high temperature section preheating cooling casing that is close to heating, holding-zone, because it is very big to go out the heat flow density of band, the forward (FWD) that just is in preheat mode from the inlet body can be preheating to very high temperature to this end; (4), in casing, be provided with several low power fans, quicken transmission of heat by convection at each regional area, have the temperature difference naturally in tank ends, also help heat exchange.
2, reduced equipment manufacturing cost, reduced working cost.In heating and insulation casing, with forward (FWD) train and go out to be with train to arrange up and down, be equivalent to the heating and the insulation casing of prior art have been shortened half, and only increased the height in a wheel footpath, cancelled the preheating section casing of prior art; The present invention has cancelled the outer air channel system of case, and just the forward (FWD) train has increased quantity than prior art; Integrate, obviously reduced equipment manufacturing cost.In addition, do not need with the more powerful gas blower of ducting system, the usage quantity of protective atmosphere has also reduced, so reduced working cost.
3, improved the annealing quality of workpiece.At the cooling preheating section, go out band is in cooling gradually always; And can be according to the performance requriements design body of heater specification of each user's workpiece and the quantity and the production technique of each functional section, so when keeping continuous oven plate shape good, required unit elongation also is improved.
4, reduced the discharging of heat in the atmosphere of workshop, reduced noise, can improve workman's operating condition, the protection environment.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the enlarged diagram of area I among Fig. 1;
Fig. 3 is the enlarged diagram of area I I among Fig. 1;
Fig. 4 is the enlarged diagram of area I II among Fig. 1;
Fig. 5 be among Fig. 1 A-A to synoptic diagram;
Fig. 6 is the enlarged diagram of area I V among Fig. 5.
Embodiment
Be described in further detail the present invention below in conjunction with embodiment, but should understand the scope that scope of the present invention is not limited only to these embodiment.
The present invention includes body of heater 17, heating unit 4, forward (FWD) port one 4 and go out band edge mouth 15, body of heater 17 is made up of heating and insulation casing 3, high temperature section cooling preheating casing 5, middle-temperature section cooling preheating casing 8, passage 7 and low-temperature zone cooling preheating casing 13, heating unit 4 is located in heating and the insulation casing 3, between heating and insulation casing 3 and high temperature section cooling preheating casing 5, high temperature section cooling preheating casing 5 and middle-temperature section cooling preheating casing 8, be connected with passage 7, forward (FWD) port one 4 and go out the front end that band edge mouth 15 is installed in low-temperature zone cooling preheating casing 13; At heating and insulation casing 3, the height directions four lines belt wheel of all having arranged in high temperature section cooling preheating casing 5 and the middle-temperature section cooling preheating casing 8, the contiguous up and down casing upper end position that is arranged in of last two row, the contiguous up and down casing lower end position that is arranged in of following two row, last two row are arranged with following two line interlacings, and the top delegation in top delegation in last two row and following two row is forward (FWD) wheel 18, form forward (FWD) train 9, following delegation in following delegation in last two row and following two row is pulley 19, form band train 10, below in last two row pulley 19 of delegation and down in two row above the forward (FWD) wheel 18 of delegation be that the wheel footpath of middle two rows belt wheel is slightly little, all leave the gap above in last two row above between the wheel face of the pulley 19 of the forward (FWD) wheel 18 of delegation and following delegation and down in two row between the wheel face of pulley 19 of the forward (FWD) wheel 18 of delegation and following delegation with as tape track, leave the gap between the promptly contiguous forward (FWD) wheel 18 and the wheel face of pulley 19 with as tape track; Band steel 20 is from forward (FWD) port one 4 forward (FWD)s of low-temperature zone cooling preheating casing 13, earlier by low-temperature zone cooling preheating casing 13, walk around the forward (FWD) train beginning roller 11 of middle-temperature section cooling preheating casing 8 front ends then, walk around in the middle-temperature section cooling preheating casing 8 again and high temperature section cooling preheating casing 5 in and the forward (FWD) train 9 in heating and the insulation casing 3, last forward (FWD) train end roller 1 place changed course to heating and insulation casing 3 rear ends, transfer band at this to by forward (FWD), going out band walks around in that heating and insulation can are intravital and goes out to be with train beginning roller 2, walk around in heating and the insulation casing more successively and in the high temperature section cooling preheating casing and middle-temperature section cooling preheated tank is intravital goes out to be with train 10, that walks around middle-temperature section cooling preheating casing front end at last goes out to be with train end roller 12, go out band from the band edge mouth 15 that goes out of low-temperature zone cooling preheating casing, go out to be with direction opposite with the forward (FWD) direction at body of heater 17 front ends.Band steel 20 is continual continuous operations.
Forward (FWD) train 9 in heating and insulation casing 3, high temperature section cooling preheating casing 5 and middle-temperature section cooling preheating casing 8 be arranged in out band train 10 above.
The forward (FWD) port one 4 of low-temperature zone cooling preheating casing 13 front ends with go out band edge mouth 15 and be step-like, and forward (FWD) port one 4 go out band edge mouth 15 above.
Be equipped with at the front end of body of heater 17 and allow band steel 20 go out band back submerged liquid heat-exchange groove 16, forward (FWD) can immerse the absorption heat.
Be provided with adjacent forward (FWD) wheel 18 to be used to pinch the auxiliary feed rolls 6 of band steel 20 above in high temperature section cooling preheating casing 5.
In heating and insulation casing 3, high temperature section cooling preheating casing 5, middle-temperature section cooling preheating casing 8 and low-temperature zone cooling preheating casing 13, be provided with several low power fans.
Claims (5)
1, a kind of with the continuous annealing furnace that utilizes band steel cooling waste heat in the casing, comprise body of heater (17), heating unit (4), forward (FWD) port (14) and go out band edge mouth (15), it is characterized in that: body of heater (17) is made up of heating and insulation casing (3), high temperature section cooling preheating casing (5), middle-temperature section cooling preheating casing (8), passage (7) and low-temperature zone cooling preheating casing (13); Heating unit (4) is located in heating and the insulation casing (3), lowering the temperature at heating and insulation casing (3) and high temperature section cooling preheating casing (5), high temperature section cooling preheating casing (5) and middle-temperature section is connected with passage (7) between the preheating casing (8), forward (FWD) port (14) and go out band edge mouth (15) and be installed in the lower the temperature front end of preheating casing (13) of low-temperature zone; In heating and insulation casing (3), high temperature section cooling preheating casing (5) and middle-temperature section cooling preheating casing (8), forward (FWD) train (9) has been installed and has gone out to be with train (10); The direction four lines belt wheel of all having arranged just in heating and insulation casing (3), high temperature section cooling preheating casing (5) and middle-temperature section cooling preheating casing (8), the contiguous up and down casing upper end position that is arranged in of last two row, the contiguous up and down casing lower end position that is arranged in of following two row, last two row are arranged with following two line interlacings, and the top delegation in top delegation in last two row and following two row is forward (FWD) wheel (18), forms forward (FWD) train (9); Following delegation in following delegation in last two row and following two row is pulley (19), forms band train (10); Band steel (20) is from being installed in forward (FWD) port (14) forward (FWD) of low-temperature zone cooling preheating casing (13) front end, earlier by low-temperature zone cooling preheating casing (13), walk around the forward (FWD) train beginning roller (11) of middle-temperature section cooling preheating casing (8) front end then, walk around in the middle-temperature section cooling preheating casing (8) again and in the high temperature section cooling preheating casing (5) and the forward (FWD) train (9) in heating and the insulation casing (3), last forward (FWD) train end roller (1) to heating and insulation casing (3) rear end is located changed course, transfers band to by forward (FWD); Going out band walks around earlier go out to be with the train roller (2) that begins in heating and insulation casing (3), walk around successively again and go out to be with train (10) in heating and insulation casing (3) and in the high temperature section cooling preheating casing (5) and in the middle-temperature section cooling preheating casing (8), that walks around middle-temperature section cooling preheating casing (8) front end goes out to be with train end roller (12), by low-temperature zone cooling preheating casing (13), go out band from the band edge mouth (15) that goes out that is installed in low-temperature zone cooling preheating casing (13) front end at last.
2, as claimed in claim 1 with the continuous annealing furnace that utilizes band steel cooling waste heat in the casing, it is characterized in that: below in last two row pulley (19) of delegation and down in two row above the wheel footpath of forward (FWD) wheel (18) of delegation slightly little, in last two row above between the wheel face of pulley (19) of the forward (FWD) wheel (18) of delegation and following delegation and down two go in the forward (FWD) of top delegation take turns and all leave the gap between the wheel face of pulley (19) of (18) and following delegation with as tape track.
3, as claimed in claim 2 with the continuous annealing furnace that utilizes band steel cooling waste heat in the casing, it is characterized in that: the forward (FWD) port (14) that is installed in low-temperature zone cooling preheating casing (13) front end with go out band edge mouth (15) and be step-like, and forward (FWD) port (14) is in the top that goes out band edge mouth (15).
4, as claim 1 or 2 or 3 described, it is characterized in that: be equipped with at the front end of body of heater (17) and allow band steel (20) before forward (FWD) and go out band back submerged liquid heat-exchange groove (16) with the continuous annealing furnaces that utilize band steel cooling waste heat in the casing.
5, as claim 1 or 2 or 3 described continuous annealing furnaces with utilization band steel cooling waste heat in the casing, it is characterized in that: the top in high temperature section cooling preheating casing (8) is provided with adjacent forward (FWD) wheel (18) to be used to pinch the auxiliary feed rolls (6) of being with steel (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101246127A CN100447261C (en) | 2006-09-22 | 2006-09-22 | Continuous annealing furnace to utilize afterheat of strip steel in the same casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101246127A CN100447261C (en) | 2006-09-22 | 2006-09-22 | Continuous annealing furnace to utilize afterheat of strip steel in the same casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1932048A CN1932048A (en) | 2007-03-21 |
| CN100447261C true CN100447261C (en) | 2008-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101246127A Expired - Fee Related CN100447261C (en) | 2006-09-22 | 2006-09-22 | Continuous annealing furnace to utilize afterheat of strip steel in the same casing |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956057B (en) * | 2010-06-13 | 2012-06-06 | 浙江佰耐钢带有限公司 | Steel band thermal treatment system with waste heat utilization device |
| CN102010976B (en) * | 2010-12-08 | 2014-10-15 | 浙江佰耐钢带有限公司 | Steel belt heat treatment waste heat recovery device with bilayer structure |
| CN103014258B (en) * | 2012-12-12 | 2014-10-29 | 肇庆宏旺金属实业有限公司 | Annealing processing system |
| CN103710521B (en) * | 2013-12-28 | 2016-09-14 | 北京工业大学 | A kind of for improving auxiliary device and the implementation method that long base band used for coating conductor is the most dynamically annealed |
| CN116904733B (en) * | 2023-08-17 | 2024-04-16 | 河南恒创能科金属制品有限公司 | Diamond wire bus comprehensive annealing system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130630A (en) * | 1984-07-20 | 1986-02-12 | Nippon Kokan Kk <Nkk> | Method and apparatus for exchanging strip |
| JPS6230824A (en) * | 1985-07-30 | 1987-02-09 | Kobe Steel Ltd | Detection of welded place in continuous treating process of strip steel and the like |
| US4913748A (en) * | 1988-07-05 | 1990-04-03 | Sellitto Thomas A | Method and apparatus for continuous annealing |
| CN1107764A (en) * | 1994-03-02 | 1995-09-06 | 新日本制铁株式会社 | Continuous annealing apparatus of steel strip and tension control system for the same |
| CN2740621Y (en) * | 2004-11-08 | 2005-11-16 | 南京年达炉业有限责任公司 | Continuous annealing furnace |
-
2006
- 2006-09-22 CN CNB2006101246127A patent/CN100447261C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6130630A (en) * | 1984-07-20 | 1986-02-12 | Nippon Kokan Kk <Nkk> | Method and apparatus for exchanging strip |
| JPS6230824A (en) * | 1985-07-30 | 1987-02-09 | Kobe Steel Ltd | Detection of welded place in continuous treating process of strip steel and the like |
| US4913748A (en) * | 1988-07-05 | 1990-04-03 | Sellitto Thomas A | Method and apparatus for continuous annealing |
| CN1107764A (en) * | 1994-03-02 | 1995-09-06 | 新日本制铁株式会社 | Continuous annealing apparatus of steel strip and tension control system for the same |
| CN2740621Y (en) * | 2004-11-08 | 2005-11-16 | 南京年达炉业有限责任公司 | Continuous annealing furnace |
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| CN1932048A (en) | 2007-03-21 |
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