CN103589853B - A kind of Horizontal Continuous Furnace for titanium band and strip anneal - Google Patents
A kind of Horizontal Continuous Furnace for titanium band and strip anneal Download PDFInfo
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- CN103589853B CN103589853B CN201310550203.3A CN201310550203A CN103589853B CN 103589853 B CN103589853 B CN 103589853B CN 201310550203 A CN201310550203 A CN 201310550203A CN 103589853 B CN103589853 B CN 103589853B
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- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 99
- 239000010936 titanium Substances 0.000 title claims abstract description 99
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 238000000137 annealing Methods 0.000 claims abstract description 134
- 239000012298 atmosphere Substances 0.000 claims abstract description 88
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 61
- 239000010959 steel Substances 0.000 claims abstract description 61
- 230000001681 protective effect Effects 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 27
- 238000001816 cooling Methods 0.000 claims abstract description 25
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 64
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 56
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 54
- 238000004519 manufacturing process Methods 0.000 claims description 37
- 229910052739 hydrogen Inorganic materials 0.000 claims description 36
- 239000001257 hydrogen Substances 0.000 claims description 35
- 229910052757 nitrogen Inorganic materials 0.000 claims description 29
- 229910052786 argon Inorganic materials 0.000 claims description 27
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 21
- 238000006073 displacement reaction Methods 0.000 claims description 19
- 150000002431 hydrogen Chemical class 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 9
- 239000012300 argon atmosphere Substances 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 239000002131 composite material Substances 0.000 description 8
- 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
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 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
- 230000008901 benefit Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 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
- 230000003902 lesion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The present invention relates to a kind of Horizontal Continuous Furnace for titanium band and strip anneal, 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 gas ventilator and gas-circulating system; Gas ventilator is arranged on Horizontal Continuous Furnace stove inner furnace wall, gas ventilator is connected with outer protection gas airing system, and be set to, when Horizontal Continuous Furnace needs to produce steel band or titanium band, need the protective atmosphere of protective atmosphere Rapid replacement required for technique of different zones in stove according to technique; In the adjustment that described gas-circulating system is set to protective atmosphere in stove and replacement process, strengthen furnace atmosphere circulation by carrying out flow-disturbing in Horizontal Continuous Furnace different zones to furnace atmosphere.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.
Description
Technical field
The invention belongs to Field of Heat-treatment, be specifically related to a kind of Horizontal Continuous Furnace being applicable to titanium band and strip anneal.
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 reduce; hardness increases; be unfavorable for following process and use, therefore the annealing of titanium plate is general adopts vacuum annealing or argon gas atmosphere protection 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, middle part and heart portion are heated inequality, 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 strengthening atmosphere convection current under an argon atmosphere in annealing process, although improve the structure and properties homogeneity of vacuum annealing titanium plate to a certain extent, but fail fundamentally to solve the problem of titanium plate annealing ununiformity, annealing sheet material also exists the problem such as performance difference and surface quality defect at different positions.The invention that application number is 201110003672.4 provides a kind of continuous bright annealing furnace to involve in the technique of row continuous bright annealing process to Cold-rolled Pure titanium, Ti Alloy Strip; according to the thick difference of volume; pass through successively with the speed of 2 ~ 6m/min; cleaning; dry up; finally introduce continuous bright annealing furnace, in annealing furnace, fill inert protective gas argon gas.Application number is that continuous annealing solves the easy unequal problem of being heated caused of periodic annealing, but because titanium plate rolling reductions performance is special, titanium plate & strip production line construction difficulty is large, titanium plate is expensive and consumption is little, the strip producing line of special construction titanium plate is not only invested huge, and product line throughput can be to a certain degree superfluous.Mostly utilize steel sheet production line to carry out the rolling of titanium plate at present, follow-uply take vacuum coil annealing or continuous annealing mode.
Application number be 201220023604.4 utility model provide a kind of stainless steel and titanium steel continuous annealing furnace spray device for cooling, 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 the one-piece construction solving existing annealing furnace spray device for cooling is unfavorable for the quick cooling after stainless steel heating and the quick cooling process behind titanium steel slow cooling section, and the problem that installation and maintenance are very inconvenient.The stainless steel that this utility model is studied and titanium steel continuous annealing furnace, being carry out continuous annealing to stainless steel with containing the steel of the alloying element titanium added, is not the continuous annealing furnace that can carry out continuous annealing to stainless steel and titanium plate.
The continuous annealing of titanium plate adopts argon gas atmosphere protection, steel band adopts hydrogen nitrogen mixture to be protective atmosphere protection annealing, after existing steel sheet production line is rolled titanium plate, steel sheet production line continuous annealing furnace cannot carry out continuous annealing to titanium plate, if the newly-built continuous annealing line that can be used for the annealing of titanium plate, then invest huge specially; And because titanium plate demand is little, the easy superfluous continuous annealing furnace stage that also therefore causes of continuous annealing line throughput stops production, less economical, and the problems such as production scheduling may be affected because of stove district location problem.
Summary of the invention
Uneven and there is the 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 simultaneously avoiding newly-built titanium band continuous annealing furnace to cause, the present invention proposes a kind of Horizontal Continuous Furnace being applicable to titanium band and strip anneal, 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:
For a Horizontal Continuous Furnace for titanium band and strip anneal, 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 gas ventilator and gas-circulating system; Gas ventilator is arranged on Horizontal Continuous Furnace stove inner furnace wall, gas ventilator is connected with outer protection gas airing system, and be set to when Horizontal Continuous Furnace needs to produce steel band or titanium band, need, by the protective atmosphere of protective atmosphere Rapid replacement required for technique of different zones in stove, to complete adjustment and the displacement of protective atmosphere in stove according to technique; In the adjustment that described gas-circulating system is set to protective atmosphere in stove and replacement process, strengthen furnace atmosphere circulation by carrying out flow-disturbing in Horizontal Continuous Furnace different zones to furnace atmosphere.
By technique scheme, Horizontal Continuous Furnace, when producing steel band, adopt hydrogen nitrogen mixture to be protective atmosphere, and hydrogen volume is than 75% ~ 100% in stove; When production line changes production titanium band into and this Horizontal Continuous Furnace needs for the production of titanium band, arranging Horizontal Continuous Furnace operational mode is creep mode, reduces Horizontal Continuous Furnace furnace temperature; When annealing furnace each district furnace temperature is down to 800 DEG C, gas ventilator is utilized to carry out nitrogen purging, progressively the hydrogen nitrogen mixture protective atmosphere in stove is replaced into nitrogen, the high-purity argon gas purging of volume fraction 99.99% is carried out again with gas ventilator, progressively protective atmosphere in stove is replaced into required argon gas, thus meets the continuous annealing protective atmosphere needs of titanium band; When after furnace atmosphere displacement completely, after namely argon content reaches 99%, heat up in Horizontal Continuous Furnace, and connect steel band and titanium band by processing apparatus before Horizontal Continuous Furnace entrance, annealing product is replaced by titanium band; Adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in Horizontal Continuous Furnace;
When Horizontal Continuous Furnace produces titanium band, in stove, argon gas is adopted to be protective atmosphere; When production line changes production steel band into and this Horizontal Continuous Furnace needs for the production of steel band, arranging Horizontal Continuous Furnace operational mode is creep mode, reduces Horizontal Continuous Furnace furnace temperature; Utilize gas ventilator to carry out nitrogen purging, progressively the argon atmosphere in stove is replaced into nitrogen; Utilize gas ventilator to pass into hydrogen when annealing furnace each district furnace temperature rises to 800 DEG C, progressively protective atmosphere in stove is replaced into required hydrogen nitrogen mixture, hydrogen volume than 75% ~ 100%, thus meets the continuous annealing protective atmosphere needs of steel band; After furnace atmosphere displacement completely, namely hydrogen volume than 75% ~ 100% after, heat up in Horizontal Continuous Furnace, and by processing apparatus connection titanium band and steel band before Horizontal Continuous Furnace entrance, annealing product be replaced by steel band; Adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in Horizontal Continuous Furnace.
By technique scheme, gas ventilator divides two subsystems, is respectively main airing system and time airing system; Main airing system atmosphere displacement the stage in stove, pass into protective atmosphere fast, secondary airing system in production phase regulating stove internal pressure to ensure furnace pressure state.
By technique scheme, gas ventilator is configured in heating zone or the cooling section of Horizontal Continuous Furnace, or is configured in the transition section between heating zone and cooling section; Gas-circulating system is configured in heating zone or the cooling section of Horizontal Continuous Furnace, or is configured in the transition section between heating zone and cooling section.
By technique scheme, is all equipped with the adjustable nozzle of wind speed in described Horizontal Continuous Furnace stove forms air cushion airing system along titanium band or steel band throughput direction upper and lower, the nozzle of air cushion airing system is staggered layout up and down; Described air cushion airing system is connected with outside inert protective gas airing system.
By technique scheme, heating zone is retort furnace; And heating zone is when being retort furnace, described gas ventilator and gas-circulating system are not all arranged on heating zone.
The present invention, in the Horizontal Continuous Furnace of titanium band and strip anneal, can produce titanium-steel-titanium composite panel to titanium band and steel band, Stainless Steel Band respectively, promote the efficiency of producing titanium-steel-titanium composite panel after carrying out continuous annealing.Horizontal Continuous Furnace includes heating zone, transition section and cooling section, each segment protect atmosphere.In addition, the object that gas-circulating system is arranged is atmosphere time swap for shortening described Horizontal Continuous Furnace and furnace atmosphere convection effects.Heating zone can be retort furnace, and main purpose is for shortening protective atmosphere adjustment and time swap in stove, shortening dew point regulation time and promote dew point level of control.
Relative to prior art, advantage of the present invention: provide a kind of Horizontal Continuous Furnace, can replace protective atmosphere in stove flexibly according to need of production is hydrogen nitrogen mixture or argon gas atmosphere, thus meets the annealing of strip anneal and titanium band; And after continuous annealing can being carried out to titanium band and Stainless Steel Band respectively, produce titanium-steel-titanium composite panel.Realize the function on a continuous annealing line, titanium band and steel band being rolled and being annealed, avoid the annealing for carrying out titanium band and produce special newly-built annealing furnace; It also avoid special newly-built titanium band annealing furnace and the problems such as interim stoppings production of equipment that cause because of demand deficiency, the quality problems such as when titanium band also there will not be periodic to anneal after annealing sheet material Internal and external cycle microstructure and property homogeneity is poor; Improve production line, the utilising efficiency in annealing furnace and workshop and economical efficiency; And the efficiency of production titanium-steel-titanium composite panel can be promoted.
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, preheating section 2, heating zone 3, cooling section 4, exit seal 5, gas ventilator 6, gas-circulating system 7, air cushion airing system 8.
Embodiment
In order to understand the present invention better, illustrate content of the present invention further below in conjunction with embodiment, but content of the present invention is not only confined to the following examples.
Embodiment 1:
The present embodiment is Horizontal Continuous Furnace, comprises inlet seal 1, preheating section 2, heating zone 3, cooling section 4, exit seal 5, is arranged in the gas ventilator 6 in heating zone, gas-circulating system 7 and air cushion airing system 8.Be equipped with air cushion airing system 8 in described Horizontal Continuous Furnace stove, the nozzle of air cushion airing system is staggered layout up and down, ensures that annealing band hoverheight is suitable for, stable; And the nozzle wind velocity of air cushion airing system is adjustable, according to thickness, the tension condition adjustment wind speed of annealing band, guarantee the buoyancy to annealing band and heat; Described air cushion airing system is connected with outside inert protective gas airing system, when Horizontal Continuous Furnace produces titanium band or steel band, selects corresponding Annealing Protection atmosphere (argon gas or hydrogen) to carry out air feed respectively.Air cushion airing system 8 mainly plays and forms the effect of air cushion from bottom picking-up band steel with blowing gas in horizontal chamber oven, thus avoids the surface with carrying roller lesion ribbon steel.
In the adjustment that described gas-circulating system 7 is set to protective atmosphere in stove and replacement process, strengthen furnace atmosphere circulation by carrying out flow-disturbing in annealing furnace different zones to furnace atmosphere.
When Horizontal Continuous Furnace produces steel band, in stove, hydrogen nitrogen (hydrogen volume is than 99.99%) gas mixture is adopted to be protective atmosphere, when needs change production titanium band into, arranging continuous annealing furnace operational mode is creep mode, reduce continuous annealing furnace furnace temperature, when annealing furnace each district furnace temperature is down to 800 DEG C, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into nitrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by nitrogen-blow simultaneously, progressively complete the displacement to furnace atmosphere, again by high-purity (volume fraction 99.99%) argon purge, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into argon gas fast in stove, air cushion airing system 8 also makes steel band keep overhang by winding-up argon gas simultaneously, progressively protective atmosphere in stove is replaced into required argon gas, furnace atmosphere circulation is strengthened by gas-circulating system 7 in replacement process, complete the displacement to furnace atmosphere, thus 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 Horizontal Continuous Furnace produces titanium band, in stove, argon gas is adopted to be protective atmosphere, when needs production line changes production steel band into, arranging continuous annealing furnace operational mode is creep mode, reduce continuous annealing furnace furnace temperature, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into nitrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by nitrogen-blow simultaneously, progressively complete the displacement to furnace atmosphere, hydrogen is passed into when annealing furnace each district furnace temperature rises to 800 DEG C, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into hydrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by winding-up hydrogen simultaneously, progressively protective atmosphere in stove is replaced into required hydrogen nitrogen (hydrogen volume is than 99.99%) gas mixture, furnace atmosphere circulation is strengthened by gas-circulating system 7 in replacement process, the main airing system of the gas ventilator be equipped with by continuous annealing furnace passes into protective atmosphere fast in stove, complete the displacement to furnace atmosphere, thus 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.
According to above-mentioned technique, thus realize that to replace protective atmosphere in stove flexibly according to need of production be hydrogen nitrogen mixture or argon gas atmosphere, reach the object of the annealing meeting strip anneal and titanium band; And after continuous annealing can being carried out to titanium band and steel band respectively, produce titanium-steel-titanium composite panel.Realize the function on a continuous annealing line, titanium band and steel band being rolled and being annealed, need not for carrying out the annealing of titanium band and producing special newly-built annealing furnace.And the quality problems such as sheet material Internal and external cycle microstructure and property homogeneity is poor when there will not be periodic to anneal after the annealing of titanium band; Improve production line, the utilising efficiency in annealing furnace and workshop and economical efficiency; And the efficiency of production titanium-steel-titanium composite panel can be promoted.
Embodiment 2:
The present embodiment is Horizontal Continuous Furnace, comprises inlet seal 1, preheating section 2, heating zone 3, cooling section 4, exit seal 5, the gas-circulating system 7 being arranged in the gas ventilator 6 on cooling section and being arranged in heating zone.
When Horizontal Continuous Furnace produces steel band, in stove, hydrogen nitrogen (hydrogen volume is than 80%) gas mixture is adopted to be protective atmosphere, when needs change production titanium band into, arranging continuous annealing furnace operational mode is creep mode, reduce continuous annealing furnace furnace temperature, when annealing furnace each district furnace temperature is down to 800 DEG C, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into nitrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by nitrogen-blow simultaneously, progressively complete the displacement to furnace atmosphere, again by high-purity (volume fraction 99.99%) argon purge, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into argon gas fast in stove, air cushion airing system 8 also makes steel band keep overhang by winding-up argon gas simultaneously, progressively protective atmosphere in stove is replaced into required argon gas, furnace atmosphere circulation is strengthened by gas-circulating system 7 in replacement process, complete the displacement to furnace atmosphere, thus 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 Horizontal Continuous Furnace produces titanium band, in stove, argon gas is adopted to be protective atmosphere, when needs production line changes production steel band into, arranging continuous annealing furnace operational mode is creep mode, reduce continuous annealing furnace furnace temperature, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into nitrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by nitrogen-blow simultaneously, nitrogen purging is utilized progressively the argon atmosphere in stove to be replaced into nitrogen, hydrogen is passed into when annealing furnace each district furnace temperature rises to 800 DEG C, the main airing system of the gas ventilator 6 be equipped with by continuous annealing furnace passes into hydrogen fast in stove, air cushion airing system 8 also makes steel band keep overhang by winding-up hydrogen simultaneously, progressively protective atmosphere in stove is replaced into required hydrogen nitrogen (hydrogen volume is than 80%) gas mixture, furnace atmosphere circulation is strengthened by gas-circulating system 7 in replacement process, complete the displacement to furnace atmosphere, thus 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.
Thus realize that to replace protective atmosphere in stove flexibly according to need of production be hydrogen nitrogen mixture or argon gas atmosphere, reach the object of the annealing meeting strip anneal and titanium band; And after continuous annealing can being carried out to titanium band and steel band respectively, produce titanium-steel-titanium composite panel.Realize the function on a continuous annealing line, titanium band and steel band being rolled and being annealed, need not for carrying out the annealing of titanium band and producing special newly-built annealing furnace.And the quality problems such as sheet material Internal and external cycle microstructure and property homogeneity is poor when there will not be periodic to anneal after the annealing of titanium band; Improve production line, the utilising efficiency in annealing furnace and workshop and economical efficiency; And the efficiency of production titanium-steel-titanium composite panel can be promoted.
Claims (4)
1. for a Horizontal Continuous Furnace for titanium band and strip anneal, 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 gas ventilator and gas-circulating system; Gas ventilator is arranged on Horizontal Continuous Furnace stove inner furnace wall, gas ventilator is connected with outer protection gas airing system, and be set to when Horizontal Continuous Furnace needs to produce steel band or titanium band, need, by the protective atmosphere of protective atmosphere Rapid replacement required for technique of different zones in stove, to complete adjustment and the displacement of protective atmosphere in stove according to technique; Gas ventilator divides two subsystems, is respectively main airing system and time airing system; Main airing system atmosphere displacement the stage in stove, pass into protective atmosphere fast, secondary airing system in production phase regulating stove internal pressure to ensure furnace pressure state; In the adjustment that described gas-circulating system is set to protective atmosphere in stove and replacement process, strengthen furnace atmosphere circulation by carrying out flow-disturbing in Horizontal Continuous Furnace different zones to furnace atmosphere;
Horizontal Continuous Furnace, when producing steel band, adopt hydrogen nitrogen mixture to be protective atmosphere, and hydrogen volume is than 75% ~ 100% in stove; When production line changes production titanium band into and this Horizontal Continuous Furnace needs for the production of titanium band, arranging Horizontal Continuous Furnace operational mode is creep mode, reduces Horizontal Continuous Furnace furnace temperature; When annealing furnace each district furnace temperature is down to 800 DEG C, gas ventilator is utilized to carry out nitrogen purging, progressively the hydrogen nitrogen mixture protective atmosphere in stove is replaced into nitrogen, the high-purity argon gas purging of volume fraction 99.99% is carried out again with gas ventilator, progressively protective atmosphere in stove is replaced into required argon gas, thus meets the continuous annealing protective atmosphere needs of titanium band; When after furnace atmosphere displacement completely, after namely argon content reaches 99%, heat up in Horizontal Continuous Furnace, and connect steel band and titanium band by processing apparatus before Horizontal Continuous Furnace entrance, annealing product is replaced by titanium band; Adjustment annealing furnace is normal operation mode, carries out the annealing of titanium band in Horizontal Continuous Furnace;
When Horizontal Continuous Furnace produces titanium band, in stove, argon gas is adopted to be protective atmosphere; When production line changes production steel band into and this Horizontal Continuous Furnace needs for the production of steel band, arranging Horizontal Continuous Furnace operational mode is creep mode, reduces Horizontal Continuous Furnace furnace temperature; Utilize gas ventilator to carry out nitrogen purging, progressively the argon atmosphere in stove is replaced into nitrogen; Utilize gas ventilator to pass into hydrogen when annealing furnace each district furnace temperature rises to 800 DEG C, progressively protective atmosphere in stove is replaced into required hydrogen nitrogen mixture, hydrogen volume than 75% ~ 100%, thus meets the continuous annealing protective atmosphere needs of steel band; After furnace atmosphere displacement completely, namely hydrogen volume than 75% ~ 100% after, heat up in Horizontal Continuous Furnace, and by processing apparatus connection titanium band and steel band before Horizontal Continuous Furnace entrance, annealing product be replaced by steel band; Adjustment annealing furnace is normal operation mode, carries out the annealing of steel band in Horizontal Continuous Furnace.
2. the Horizontal Continuous Furnace for titanium band and strip anneal according to claim 1, is characterized in that: gas ventilator is configured in heating zone or the cooling section of Horizontal Continuous Furnace, or is configured in the transition section between heating zone and cooling section; Gas-circulating system is configured in heating zone or the cooling section of Horizontal Continuous Furnace, or is configured in the transition section between heating zone and cooling section.
3. the Horizontal Continuous Furnace for titanium band and strip anneal according to claim 1, it is characterized in that: is all equipped with the adjustable nozzle of wind speed along titanium band or steel band throughput direction upper and lower in described Horizontal Continuous Furnace stove and forms air cushion airing system, the nozzle of air cushion airing system is staggered layout up and down; Described air cushion airing system is connected with outside inert protective gas airing system.
4. the Horizontal Continuous Furnace for titanium band and strip anneal according to claim 1, is characterized in that: heating zone is retort furnace; And heating zone is when being retort furnace, described gas ventilator and gas-circulating system are not all arranged on heating zone.
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| CN104878188B (en) * | 2015-05-20 | 2017-02-22 | 东北大学 | Experimental facility and experiment method for realizing air cushion type heat treatment of aluminum strips |
| CN113667802B (en) * | 2021-07-31 | 2023-05-12 | 浙江明泰控股发展股份有限公司 | Continuous annealing device |
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