CN103555925A - Vertical-type continuous annealing furnace for titanium plate and steel strip - Google Patents
Vertical-type continuous annealing furnace for titanium plate and steel strip Download PDFInfo
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- CN103555925A CN103555925A CN201310550374.6A CN201310550374A CN103555925A CN 103555925 A CN103555925 A CN 103555925A CN 201310550374 A CN201310550374 A CN 201310550374A CN 103555925 A CN103555925 A CN 103555925A
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- 238000000137 annealing Methods 0.000 title claims abstract description 198
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 93
- 239000010936 titanium Substances 0.000 title claims abstract description 93
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 59
- 239000010959 steel Substances 0.000 title claims abstract description 59
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 84
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 68
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 56
- 229910052757 nitrogen Inorganic materials 0.000 claims description 35
- 229910052739 hydrogen Inorganic materials 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 33
- 239000001257 hydrogen Substances 0.000 claims description 32
- 239000007789 gas Substances 0.000 claims description 31
- 229910052786 argon Inorganic materials 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 24
- 150000002431 hydrogen Chemical class 0.000 claims description 19
- 238000006073 displacement reaction Methods 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 13
- 238000010926 purge Methods 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000001351 cycling effect Effects 0.000 abstract 2
- 238000007789 sealing Methods 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 4
- 238000004904 shortening Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The invention relates to a vertical-type continuous annealing furnace for a titanium plate and a steel strip. The vertical-type continuous annealing furnace comprises a heating section, a transitional section and a cooling section, wherein sealing systems are respectively arranged in front of the heating section and behind the cooling section, and the protection atmosphere inside each section of the annealing furnace is communicated with each other; and the vertical-type continuous annealing furnace is characterized by comprising a protection atmosphere replacing system and a protection atmosphere cycling system; the protection atmosphere replacing system is communicated with an external protection gas supply system and used for rapidly replacing the protection atmosphere of different areas inside the annealing furnace by utilizing the protection atmosphere needed by the process according to the process requirement when the steel strip or a titanium strip is produced by the vertical-type continuous annealing furnace so as to complete the adjustment and replacement of the protection atmosphere inside the furnace; the protection atmosphere cycling system is used for spoiling the protection atmosphere in different areas of the vertical-type continuous annealing furnace so as to enhance the circulation of the atmosphere inside the furnace in the adjustment and replacement processes of the protection atmosphere in the furnace. The vertical-type continuous annealing furnace can be used for continuously annealing the titanium strip and the steel strip, and the annealed titanium strip and steel strip with uniform tissue and property and good surface quality can be obtained.
Description
Technical field
The invention belongs to Field of Heat-treatment, be specifically related to a kind of vertical continuous annealing furnace that is applicable to titanium band and steel band annealing.
Background technology
Because the chemical property of titanium is active; at high temperature easily and the element generation chemical reaction such as O, N, H; cause the degradation of titanium plate and titanium alloy; intensity and Plasticity Decreasing; hardness increases; be unfavorable for following process and use, so general vacuum annealing or the argon gas atmosphere of adopting of titanium plate annealing protected annealing.In existing titanium plate production process, anneal mostly adopts vacuum coil annealing, vacuum coil annealing is periodic annealing, and the annealing cycle is long, because of in vacuum annealing process, titanium plate is outside, inequality is heated by middle part and heart portion, makes sheet material Internal and external cycle microstructure and property homogeneity poor.At present a lot of technique is subject to thermal effect to promote titanium plate by strengthen atmosphere convection current under argon gas atmosphere in annealing process, although promoted to a certain extent tissue and the performance uniformity of vacuum annealing titanium plate, but fail fundamentally to solve the problem of titanium plate annealing ununiformity, annealing sheet material exists the problems such as performance difference and surface quality defect at different positions.The invention that application number is 201110003672.4 provides a kind of, with continuous bright annealing furnace, Cold-rolled Pure titanium, Ti Alloy Strip is involved in to the technique that row continuous bright annealing is processed; according to the thick difference of volume; speed with 2 ~ 6m/min is passed through successively; clean; dry up; finally introduce continuous bright annealing furnace, in annealing furnace, fill inert protective gas argon gas.Continuous annealing has solved the unequal problem of being heated that periodic annealing easily causes, but because titanium plate rolling drawability is special, titanium Strip building of production line difficulty is large, titanium plate costliness and consumption are little, the special strip producing line of building titanium plate is not only invested huge, and produces to a certain degree surplus of line throughput.At present mostly utilize steel sheet production line to carry out the rolling of titanium plate, follow-up vacuum coil annealing or the continuous annealing mode taked.The continuous annealing of titanium plate adopts argon gas atmosphere protection, it is protective atmosphere protection annealing that steel band adopts hydrogen nitrogen mixture, after titanium plate being rolled on existing steel sheet production line, steel sheet production line continuous annealing furnace cannot carry out continuous annealing to titanium plate, if the special newly-built continuous annealing line that can be used for the annealing of titanium plate, invests huge; And because titanium plate demand is little, the easy superfluous interim stopping production of continuous annealing furnace that also therefore causes of continuous annealing line throughput, less economical, and may Yin Lu district location problem affect the problems such as production scheduling.
The utility model that application number is 201220023604.4 provides a kind of stainless steel and titanium steel continuous annealing furnace spray device for cooling, and this device relates to a kind of spray device for cooling, is specifically related to a kind of stainless steel and titanium steel continuous annealing furnace spray device for cooling.In order to solve the one-piece construction of existing annealing furnace spray device for cooling, be unfavorable for the quick cooling process behind the quick cooling and titanium steel slow cooling section after stainless steel heating, and the very inconvenient problem of installation and maintenance.The stainless steel that this utility model is studied and titanium steel continuous annealing furnace, be to carry out continuous annealing to stainless steel with containing the steel of the alloying element titanium adding, and is not the continuous annealing furnace that can carry out continuous annealing to stainless steel and titanium plate.
Summary of the invention
Inhomogeneous and have problems such as surface quality defect in order to solve titanium band microstructure and property in vacuum coil annealing, huge and the overcapacity problem of the investment of simultaneously avoiding newly-built titanium band vertical continuous annealing furnace to cause, the present invention proposes a kind of vertical continuous annealing furnace that is applicable to titanium band and steel band annealing, can be used for the continuous annealing of titanium band and steel band, obtain microstructure and property is even, surface quality is good annealing titanium band and steel band.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A vertical continuous annealing furnace for titanium band and steel band annealing, comprises heating zone, transition section and cooling section, before heating zone He after cooling section, is equipped with tightness system, and in each section of stove, protective atmosphere is communicated with; It is characterized in that: be equipped with protective atmosphere exchange system and the protective atmosphere recycle system; Protective atmosphere exchange system is connected with outer protection gas airing system, and be set to when vertical continuous annealing furnace need to be produced steel band or titanium band, according to technique, need to be the needed protective atmosphere of technique by the protective atmosphere Rapid replacement of different zones in stove, complete adjustment and the displacement of protective atmosphere in stove; The described protective atmosphere recycle system is set in the adjustment and replacement process of protective atmosphere in stove, by furnace atmosphere being carried out to flow-disturbing reinforcement furnace atmosphere in vertical continuous annealing furnace different zones, circulates.
By technique scheme, when vertical continuous annealing furnace is produced steel band, in stove, adopting hydrogen nitrogen mixture is protective atmosphere, and hydrogen volume is than 75% ~ 100%; When production line changes into, produce titanium band and this vertical continuous annealing furnace need to be for the production of titanium band time, it is creep mode that vertical continuous annealing furnace operational mode is set, and reduces vertical continuous annealing furnace furnace temperature; When each district's furnace temperature of annealing furnace is down to 800 ℃, utilize protective atmosphere exchange system to carry out nitrogen purging, progressively the hydrogen nitrogen mixture protective atmosphere in stove is replaced into nitrogen, with protective atmosphere exchange system, carry out again the high-purity argon gas purging of volume fraction 99.99%, progressively protective atmosphere in stove is replaced into needed argon gas, thereby meets the continuous annealing protective atmosphere needs of titanium band; After furnace atmosphere displacement completely, after argon content reaches 99%, in vertical continuous annealing furnace, heat up, and connect steel band and titanium band by processing apparatus before vertical continuous annealing furnace entrance, annealing product is replaced by titanium band; Adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in vertical continuous annealing furnace;
When vertical continuous annealing furnace is produced titanium band, in stove, adopting argon gas is protective atmosphere; When production line changes into, produce steel band and this vertical continuous annealing furnace need to be for the production of steel band time, it is creep mode that vertical continuous annealing furnace operational mode is set, and reduces vertical continuous annealing furnace furnace temperature; Utilize protective atmosphere exchange system to carry out nitrogen purging, progressively the argon shield atmosphere in stove is replaced into nitrogen; When each district's furnace temperature of annealing furnace rises to 800 ℃, utilize protective atmosphere exchange system to pass into hydrogen, progressively protective atmosphere in stove is replaced into needed hydrogen nitrogen mixture, hydrogen volume is than 75% ~ 100%, thereby meets the continuous annealing protective atmosphere needs of steel band; After furnace atmosphere displacement completely, hydrogen volume, than after 75% ~ 100%, heats up in vertical continuous annealing furnace, and by processing apparatus connection titanium band and steel band before vertical continuous annealing furnace entrance, annealing product is replaced by steel band; Adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in vertical continuous annealing furnace.
By technique scheme, protective atmosphere exchange system divides two subsystems, is respectively main airing system and time airing system; Main airing system passes into fast protective atmosphere in atmosphere displacement in the stage in stove, inferior airing system in production phase regulating stove internal pressure to guarantee furnace pressure state.
By technique scheme, protective atmosphere exchange system is configured in heating zone or the cooling section of vertical continuous annealing furnace, or is configured in the transition section between heating zone and cooling section; The protective atmosphere recycle system is configured in heating zone or the cooling section of vertical continuous annealing furnace, or is configured in the transition section between heating zone and cooling section.
By technique scheme, heating zone is retort furnace; And when heating zone is retort furnace, described protective atmosphere exchange system and the protective atmosphere recycle system are not all arranged on heating zone.
The present invention is in the vertical continuous annealing furnace of titanium band and steel band annealing, can be respectively titanium band and steel band, Stainless Steel Band carried out producing titanium-steel-titanium composition board after continuous annealing, promotes the efficiency of producing titanium-steel-titanium composition board.Vertical continuous annealing furnace includes heating zone, transition section and cooling section, and each segment protect atmosphere is communicated with.Protective atmosphere exchange system is arranged on vertical continuous annealing furnace stove inner furnace wall.In addition, the object of protective atmosphere recycle system setting is for shortening atmosphere time swap and the furnace atmosphere convection effects of described vertical continuous annealing furnace.Heating zone can be retort furnace, and main purpose is for shortening protective atmosphere adjustment and time swap, shortening dew point adjustment time and lifting dew point level of control in stove.
With respect to prior art, advantage of the present invention: a kind of vertical continuous annealing furnace is provided, and can replace flexibly protective atmosphere in stove according to need of production is hydrogen nitrogen mixture or argon gas atmosphere, thereby meet, steel band is annealed and the annealing of titanium band; And can to titanium band and Stainless Steel Band, carry out after continuous annealing respectively, produce titanium-steel-titanium composition board.The function that realization is rolled and anneals titanium band and steel band on a continuous annealing line, avoids as carrying out the annealing of titanium band and producing special newly-built annealing furnace; The problems such as interim stoppings production of equipment of also having avoided special newly-built titanium band annealing furnace and having caused because of demand deficiency, the quality problems such as while also there will not be periodic to anneal after the annealing of titanium band sheet material Internal and external cycle microstructure and property homogeneity is poor; Utilising efficiency and the economical efficiency in production line, annealing furnace and workshop have been promoted; And can promote the efficiency of production titanium-steel-titanium composition board.
accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of another embodiment of the present invention.
In figure, each Reference numeral is corresponding as follows: inlet seal 1, heating zone 2, transition section 3, gas ventilator 4, the protective atmosphere recycle system 5, steering gear 6, passage 7, exit seal 8, cooling section 9.
Embodiment
In order to understand better the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not only confined to the following examples.
Embodiment 1:
The present embodiment is vertical continuous annealing furnace, comprises inlet seal 1, heating zone 2; transition section 3, cooling section 9, steering gear 6 and passage 7; exit seal 8, is arranged in the gas ventilator 4 on cooling section 9 and is arranged on the protective atmosphere recycle system 5 in heating zone 2.
When vertical continuous annealing furnace is produced steel band, in stove, adopting hydrogen nitrogen (hydrogen volume is than 99.99%) gas mixture is protective atmosphere, when needs change production titanium band into, it is creep mode that continuous annealing furnace operational mode is set, reduce continuous annealing furnace furnace temperature, when each district's furnace temperature of annealing furnace is down to 800 ℃, utilize gas ventilator 4 to carry out nitrogen purging and progressively the hydrogen nitrogen mixture protective atmosphere in stove is replaced into nitrogen, use again high-purity (volume fraction 99.99%) argon purge, progressively nitrogen protection atmosphere in stove is replaced into needed argon gas, in replacement process, by the protective atmosphere recycle system 5, strengthening furnace atmosphere circulates, the main airing system of the gas ventilator 4 being equipped with by continuous annealing furnace passes into fast argon shield atmosphere in stove, complete the displacement to furnace atmosphere, thereby meet the continuous annealing protective atmosphere needs of titanium band.After furnace atmosphere displacement complete (argon content reaches 99%), heat up, and connect steel band and titanium band by processing apparatus before continuous annealing furnace entrance, annealing product is replaced by titanium band, adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in continuous annealing furnace;
When vertical continuous annealing furnace is produced titanium band, in stove, adopting argon gas is protective atmosphere; When needs production line changes production steel band into, it is creep mode that continuous annealing furnace operational mode is set, and reduces continuous annealing furnace furnace temperature, utilizes nitrogen purging progressively the argon shield atmosphere in stove to be replaced into nitrogen; When rising to 800 ℃, each district's furnace temperature of annealing furnace passes into hydrogen; progressively nitrogen protection atmosphere in stove is replaced into needed hydrogen nitrogen (hydrogen volume is than 99.99%) gas mixture; in replacement process, by the protective atmosphere recycle system 5, strengthening furnace atmosphere circulates; the main airing system of the gas ventilator 4 being equipped with by continuous annealing furnace passes into fast protective atmosphere in stove; complete the displacement to furnace atmosphere, thereby meet the continuous annealing protective atmosphere needs of steel band.After furnace atmosphere displacement complete (hydrogen volume is than 99.99%), heat up, and connect titanium band and steel band by processing apparatus before continuous annealing furnace entrance, annealing product is replaced by steel band, adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in continuous annealing furnace.
Preferably, gas ventilator 4 of the present invention is preferably air exchange system.
According to above-mentioned technique, according to need of production, replacing flexibly protective atmosphere in stove is hydrogen nitrogen mixture or argon gas atmosphere, reaches the object of the annealing that meets steel band annealing and titanium band; And can to titanium band and steel band, carry out after continuous annealing respectively, produce titanium-steel-titanium composition board.The function that realization is rolled and anneals titanium band and steel band on a continuous annealing line, need not be for carrying out the annealing of titanium band and producing special newly-built annealing furnace.And the quality problems such as while there will not be periodic annealing after titanium band annealing sheet material Internal and external cycle microstructure and property homogeneity is poor; Utilising efficiency and the economical efficiency in production line, annealing furnace and workshop have been promoted; And can promote the efficiency of production titanium-steel-titanium composition board.
Embodiment 2:
The present embodiment is vertical continuous annealing furnace, comprises inlet seal 1, heating zone 2, transition section 3; cooling section 9, steering gear and passage 7, exit seal 8; heating zone is retort furnace, has muffle tube 10 in heating zone, is arranged in gas ventilator 4 and the protective atmosphere recycle system 5 on cooling section 9.
When vertical continuous annealing furnace is produced steel band, in stove, adopting hydrogen nitrogen (hydrogen volume is than 80%) gas mixture is protective atmosphere, when needs change production titanium band into, it is creep mode that continuous annealing furnace operational mode is set, reduce continuous annealing furnace furnace temperature, when each district's furnace temperature of annealing furnace is down to 800 ℃, utilize nitrogen purging progressively the hydrogen nitrogen mixture protective atmosphere in stove to be replaced into nitrogen, use again high-purity (volume fraction 99.99%) argon purge, progressively protective atmosphere in stove is replaced into needed argon gas, in replacement process, by the protective atmosphere recycle system, strengthening furnace atmosphere circulates, the main airing system of the protective atmosphere exchange system being equipped with by continuous annealing furnace passes into fast protective atmosphere in stove, complete the displacement to furnace atmosphere, thereby meet the continuous annealing protective atmosphere needs of titanium band.After furnace atmosphere displacement complete (argon content reaches 99%), heat up, and connect steel band and titanium band by processing apparatus before continuous annealing furnace entrance, annealing product is replaced by titanium band, adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in continuous annealing furnace;
When vertical continuous annealing furnace is produced titanium band, in stove, adopting argon gas is protective atmosphere, when needs production line changes production steel band into, it is creep mode that continuous annealing furnace operational mode is set, reduce continuous annealing furnace furnace temperature, utilize nitrogen purging progressively the argon shield atmosphere in stove to be replaced into nitrogen, when rising to 800 ℃, each district's furnace temperature of annealing furnace passes into hydrogen, progressively protective atmosphere in stove is replaced into needed hydrogen nitrogen (hydrogen volume is than 80%) gas mixture, in replacement process, by the protective atmosphere recycle system, strengthening furnace atmosphere circulates, the main airing system of the protective atmosphere exchange system being equipped with by continuous annealing furnace passes into fast protective atmosphere in stove, complete the displacement to furnace atmosphere, thereby meet the continuous annealing protective atmosphere needs of steel band.After furnace atmosphere displacement complete (hydrogen volume is than 80%), heat up, and connect titanium band and steel band by processing apparatus before continuous annealing furnace entrance, annealing product is replaced by steel band, adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in continuous annealing furnace.
According to above-mentioned technique, according to need of production, replacing flexibly protective atmosphere in stove is hydrogen nitrogen mixture or argon gas atmosphere, reaches the object of the annealing that meets steel band annealing and titanium band; And can to titanium band and steel band, carry out after continuous annealing respectively, produce titanium-steel-titanium composition board.The function that realization is rolled and anneals titanium band and steel band on a vertical continuous annealing line, need not be for carrying out the annealing of titanium band and producing special newly-built annealing furnace.And the quality problems such as while there will not be periodic annealing after titanium band annealing sheet material Internal and external cycle microstructure and property homogeneity is poor; Utilising efficiency and the economical efficiency in production line, annealing furnace and workshop have been promoted; And can promote the efficiency of production titanium-steel-titanium composition board.
Claims (5)
1. for a vertical continuous annealing furnace for titanium band and steel band annealing, comprise heating zone, transition section and cooling section, before heating zone He after cooling section, be equipped with tightness system, in each section of stove, protective atmosphere is communicated with; It is characterized in that: be equipped with protective atmosphere exchange system and the protective atmosphere recycle system; Protective atmosphere exchange system is connected with outer protection gas airing system, and be set to when vertical continuous annealing furnace need to be produced steel band or titanium band, according to technique, need to be the needed protective atmosphere of technique by the protective atmosphere Rapid replacement of different zones in stove, complete adjustment and the displacement of protective atmosphere in stove; The described protective atmosphere recycle system is set in the adjustment and replacement process of protective atmosphere in stove, by furnace atmosphere being carried out to flow-disturbing reinforcement furnace atmosphere in vertical continuous annealing furnace different zones, circulates.
2. vertical continuous annealing furnace according to claim 1, is characterized in that: when vertical continuous annealing furnace is produced steel band, in stove, adopting hydrogen nitrogen mixture is protective atmosphere, and hydrogen volume is than 75% ~ 100%; When production line changes into, produce titanium band and this vertical continuous annealing furnace need to be for the production of titanium band time, it is creep mode that vertical continuous annealing furnace operational mode is set, and reduces vertical continuous annealing furnace furnace temperature; When each district's furnace temperature of annealing furnace is down to 800 ℃, utilize protective atmosphere exchange system to carry out nitrogen purging, progressively the hydrogen nitrogen mixture protective atmosphere in stove is replaced into nitrogen, with protective atmosphere exchange system, carry out again the high-purity argon gas purging of volume fraction 99.99%, progressively protective atmosphere in stove is replaced into needed argon gas, thereby meets the continuous annealing protective atmosphere needs of titanium band; After furnace atmosphere displacement completely, after argon content reaches 99%, in vertical continuous annealing furnace, heat up, and connect steel band and titanium band by processing apparatus before vertical continuous annealing furnace entrance, annealing product is replaced by titanium band; Adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in vertical continuous annealing furnace;
When vertical continuous annealing furnace is produced titanium band, in stove, adopting argon gas is protective atmosphere; When production line changes into, produce steel band and this vertical continuous annealing furnace need to be for the production of steel band time, it is creep mode that vertical continuous annealing furnace operational mode is set, and reduces vertical continuous annealing furnace furnace temperature; Utilize protective atmosphere exchange system to carry out nitrogen purging, progressively the argon shield atmosphere in stove is replaced into nitrogen; When each district's furnace temperature of annealing furnace rises to 800 ℃, utilize protective atmosphere exchange system to pass into hydrogen, progressively protective atmosphere in stove is replaced into needed hydrogen nitrogen mixture, hydrogen volume is than 75% ~ 100%, thereby meets the continuous annealing protective atmosphere needs of steel band; After furnace atmosphere displacement completely, hydrogen volume, than after 75% ~ 100%, heats up in vertical continuous annealing furnace, and by processing apparatus connection titanium band and steel band before vertical continuous annealing furnace entrance, annealing product is replaced by steel band; Adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in vertical continuous annealing furnace.
3. vertical continuous annealing furnace according to claim 1 and 2, is characterized in that: protective atmosphere exchange system divides two subsystems, is respectively main airing system and time airing system; Main airing system passes into fast protective atmosphere in atmosphere displacement in the stage in stove, inferior airing system in production phase regulating stove internal pressure to guarantee furnace pressure state.
4. vertical continuous annealing furnace according to claim 3, is characterized in that: protective atmosphere exchange system is configured in heating zone or the cooling section of vertical continuous annealing furnace, or is configured in the transition section between heating zone and cooling section; The protective atmosphere recycle system is configured in heating zone or the cooling section of vertical continuous annealing furnace, or is configured in the transition section between heating zone and cooling section.
5. according to the vertical continuous annealing furnace described in claim 1 or 2 or 4, it is characterized in that: heating zone is retort furnace; And when heating zone is retort furnace, described protective atmosphere exchange system and the protective atmosphere recycle system are not all arranged on heating zone.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105063301A (en) * | 2015-09-10 | 2015-11-18 | 洛阳理工学院 | Vertical continuous heating and quenching production equipment for aluminum alloy plate strip |
| CN112877528A (en) * | 2020-12-27 | 2021-06-01 | 江苏轩辕特种材料科技有限公司 | High-strength magnesium-aluminum alloy quenching device and working method |
| CN113667802A (en) * | 2021-07-31 | 2021-11-19 | 浙江明泰控股发展股份有限公司 | Novel continuous type annealing ware |
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| CN101760606A (en) * | 2008-12-26 | 2010-06-30 | 宁波宝新不锈钢有限公司 | Control method of protective atmosphere of stainless steel cover type annealing furnace |
| JP2013147681A (en) * | 2012-01-17 | 2013-08-01 | Jfe Steel Corp | Steel strip continuous annealing furnace and continuous annealing method |
| CN203569153U (en) * | 2013-11-08 | 2014-04-30 | 中冶南方(武汉)威仕工业炉有限公司 | Vertical continuous annealing furnace for annealing titanium plates and steel strips |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101760606A (en) * | 2008-12-26 | 2010-06-30 | 宁波宝新不锈钢有限公司 | Control method of protective atmosphere of stainless steel cover type annealing furnace |
| JP2013147681A (en) * | 2012-01-17 | 2013-08-01 | Jfe Steel Corp | Steel strip continuous annealing furnace and continuous annealing method |
| CN203569153U (en) * | 2013-11-08 | 2014-04-30 | 中冶南方(武汉)威仕工业炉有限公司 | Vertical continuous annealing furnace for annealing titanium plates and steel strips |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105063301A (en) * | 2015-09-10 | 2015-11-18 | 洛阳理工学院 | Vertical continuous heating and quenching production equipment for aluminum alloy plate strip |
| CN112877528A (en) * | 2020-12-27 | 2021-06-01 | 江苏轩辕特种材料科技有限公司 | High-strength magnesium-aluminum alloy quenching device and working method |
| CN113667802A (en) * | 2021-07-31 | 2021-11-19 | 浙江明泰控股发展股份有限公司 | Novel continuous type annealing ware |
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