CN104232877B - A kind of strip steel annealing furnace roller roll surface anti-dross device - Google Patents
A kind of strip steel annealing furnace roller roll surface anti-dross device Download PDFInfo
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- CN104232877B CN104232877B CN201410412836.2A CN201410412836A CN104232877B CN 104232877 B CN104232877 B CN 104232877B CN 201410412836 A CN201410412836 A CN 201410412836A CN 104232877 B CN104232877 B CN 104232877B
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Abstract
A kind of strip steel annealing furnace roller roll surface anti-dross device belongs to strip steel Equipment for Heating Processing, particularly relates to continuous strip annealing furnace.Feature is to set air inlet pipeline on described nitrogen letter shoot, air inlet pipeline outlet side is connected nitrogen damping device by nitrogen intake valve, air relief valve, dampness regulation valve, dry gas regulation valve, nitrogen damping device is entered stove regulation valve by dampness, filling line is connected to the dampness nozzle bottom annealing furnace soaking zone, and air inlet pipeline, nitrogen damping device, filling line and annealing furnace form a gas passage.Advantage is that the dew point of soaking zone atmosphere is 27 DEG C～35 DEG C in this device annealing furnace, the gas microgranule of high dew point is first enriched with in furnace roller non-strip steel contact surface roughness valley point, the high temperature strip steel that bringing-up section is come is encased, gas microgranule expanded by heating, effectively stop the sponge iron on strip steel to be bonded to tumor on furnace roller, improve product quality, reduce blow-on roll change number of times, reduce spare part expense and production cost, improving product lumber recovery and unit operation rate.
Description
Technical field
The invention belongs to strip steel Equipment for Heating Processing, particularly relate to continuous strip annealing furnace.
Background technology
Continuous annealing furnace is important cold rolled annealed equipment, setting preheating section, bringing-up section, soaking zone, slow cooling section, rapid cooling section, overaging section, secondary cooling zone and cold section eventually in currently used annealing furnace, airtight furnace chamber soaking zone is full of the nitrogen hydrogen mixeding gas that dew point is-40 DEG C～-50 DEG C.Strip steel under room temperature is preheated in entering stove, bringing-up section constantly heats, and is up to 680 DEG C～850 DEG C to soaking zone belt steel surface temperature, continues 44s～109s at soaking zone.Owing to the small amounts ferrum of belt steel surface is reduced into sponge iron under conditions of high temperature, reducing atmosphere, in addition the speed difference (change of unit speed and the inertia system speed difference of steel band) of strip steel and furnace roller and the roughness reason on furnace roller surface, the sponge iron generated easily is taken root at roll surface roughness valley point, is grown up, the longest more big, cumulative, final dross, dross is printed off concavity pit major defect on strip steel, is affected belt steel product quality.Not yet disclose strip steel annealing furnace roller roll surface anti-dross device at present and solve furnace roller furnace sow problem, simply use the DPC-74(ceramic metal of resistive connection tumor) as furnace roller sprayed on material, defect is that sprayed on material price is high, increases production cost；Or increase blow-on number of times, and change dross furnace roller, defect is that a blow-on is first lowered the temperature and heated up afterwards, and energy resource consumption is big, and blow-on affect the service life of annealing furnace frequently, changes furnace roller labor intensity greatly, and increase standby redundancy consumption increases production cost greatly.
Summary of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of strip steel annealing furnace roller roll surface anti-dross device, effectively solve furnace roller furnace sow problem, improve product quality, reduce blow-on roll change number of times, reduce spare part expense and production cost, improving product lumber recovery and unit operation rate.
A kind of strip steel annealing furnace roller roll surface anti-dross device, including annealing furnace, furnace roller is set in annealing furnace, annealing furnace soaking zone top peripheral hardware furnace chamber dew point display instrument, nitrogen letter shoot, hydrogen delivery tube respectively with source of the gas, gas hybrid station connects, gas hybrid station supplies to annealing furnace, it is characterized on described nitrogen letter shoot setting air inlet pipeline, air inlet pipeline outlet side is by nitrogen intake valve, air relief valve, dampness regulation valve, dry gas regulation valve connects nitrogen damping device, nitrogen damping device is entered stove regulation valve by dampness, filling line is connected to the dampness nozzle bottom annealing furnace soaking zone, air inlet pipeline, nitrogen damping device, filling line and annealing furnace form a gas passage.During use, gas hybrid station is continual carries nitrogen and hydrogen mixture in annealing furnace, open the intake valve on air inlet pipeline and dampness regulation valve, carried the nitrogen that dew point is-60 DEG C～-70 DEG C that comes by source of the gas and enter dampness tank, obtain the wet nitrogen of dew point-0 DEG C～-10 DEG C, wet nitrogen enters stove through filling line from soaking zone furnace bottom, mix with the nitrogen hydrogen in stove, forming dew point is-27 DEG C～-35 DEG C of nitrogen hydrogen mixeding gas, the gas microgranule of high dew point is first enriched with in furnace roller non-strip steel contact surface roughness valley point, the high temperature strip steel that bringing-up section is come is encased, gas microgranule expanded by heating, the sponge iron on strip steel is effectively stoped to be bonded to tumor on furnace roller.
The present invention improves further, and described nitrogen damping device is made up of the dampness tank of the water inlet pipe of band water intaking valve, water injection tank and scale with a scale, and the top of water injection tank connects water inlet pipe, connects with dampness tank and communicate bottom water injection tank, dampness tank peripheral hardware dampness dew point display instrument；The side of water injection tank sets overflow pipe, and the mouth of pipe of overflow pipe is slightly above upper limit waterline, and the lower end of overflow pipe sets overflow valve, and the water level in suppression dampness tank is too high, reduces the moisture in nitrogen；Dampness tank side sets gauge box, and gauge cassette bottom portion and upper side connect with dampness tank respectively and communicate, it is ensured that the water in dampness tank can enter in gauge box, sets band upper limit water level and the magnetic flap Liquid level scale of the water level that rolls off the production line in scale box.
The present invention improves further, described air inlet pipeline is made up of air inlet pipe and dry gas arm, intake valve, air relief valve and dampness regulation valve is set successively in air inlet pipe, dry gas arm is set in the air inlet pipe of dampness regulation valve at air relief valve, dry gas regulation valve is set on dry gas arm, air inlet pipe one end of air inlet pipeline is connected with nitrogen letter shoot, and the other end stretches into below the upper limit water level of dampness tank, and the dry gas arm of air inlet pipeline is connected with the top of dampness tank.Initial dew point be the nitrogen of-60 DEG C～-70 DEG C through intake valve, air relief valve, then regulate valve/dry gas regulation valve proportioning through dampness so that the dew point of wet nitrogen is easily controlled, it is ensured that the dew point of wet nitrogen-0 DEG C～-10 DEG C stably shows state.
The present invention improves further, described filling line is entered stove regulation valve, airway and nozzle and constitutes by escape pipe, dampness, set dampness on airway and enter stove regulation valve, airway one end enters stove regulation valve and is connected with dampness, the other end is all provided with escape pipe, and escape pipe is connected with the nozzle bottom annealing furnace soaking zone；End at airway sets condensed water elimination valve, discharges condensed water in time.
Compared with prior art, advantage is novel, and structure letter is gathered, rationally；This device, by arranging air inlet pipeline on nitrogen letter shoot, obtains the nitrogen that dew point is-60 DEG C～-70 DEG C, and nitrogen obtains convenient, is not required to additionally increase source of the gas；In annealing furnace, the dew point of soaking zone atmosphere is-27 DEG C～-35 DEG C, the gas microgranule of high dew point is first enriched with in furnace roller non-strip steel contact surface roughness valley point, the high temperature strip steel that bringing-up section is come is encased, gas microgranule expanded by heating, effectively stop the sponge iron on strip steel to be bonded to tumor on furnace roller, improve product quality, reduce blow-on roll change number of times, reduce spare part expense and production cost, improving product lumber recovery and unit operation rate.
Accompanying drawing explanation
The present invention is further described below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of a kind of strip steel annealing furnace roller roll surface anti-dross device.
In figure: 1-water intaking valve, 2-water injection tank, 3-overflow pipe, 4-overflow valve, 5-nitrogen intake valve, 6-air relief valve, 7-dampness regulation valve, 8-dry gas regulation valve, 9-dampness tank, 10-dampness enters stove regulation valve, 11-dampness dew point display instrument, 12-gauge box, 13-upper limit water level Liquid level scale, 14-lower limit water level Liquid level scale, 15-annealing furnace, 16-furnace roller, 17-strip steel, the wet nitrogen of 18-, 19-furnace chamber dew point display instrument, 20-condensed water elimination valve, 21-nitrogen letter shoot, 22-air inlet pipeline, 23-airway, 24-escape pipe, 25-nozzle, 26-hydrogen delivery tube, 27-gas hybrid station.
Detailed description of the invention
Below in conjunction with embodiment, present invention row further is described in detail.
As seen from Figure 1, a kind of strip steel annealing furnace roller roll surface anti-dross device, including annealing furnace 15, furnace roller 16 is set in annealing furnace, annealing furnace soaking zone top peripheral hardware furnace chamber dew point display instrument 19, nitrogen letter shoot 21, hydrogen delivery tube 26 respectively with source of the gas, gas hybrid station 27 connects, gas hybrid station supplies to annealing furnace, air inlet pipeline 22 is set on nitrogen letter shoot, air inlet pipeline outlet side is by nitrogen intake valve 5, air relief valve 6, dampness regulation valve 7, dry gas regulation valve 8 connects nitrogen damping device, nitrogen damping device is entered stove regulation valve 10 by dampness, filling line is connected to the dampness nozzle 25 bottom annealing furnace soaking zone, air inlet pipeline, nitrogen damping device, filling line and annealing furnace form a gas passage.During use, gas hybrid station 27 is continual carries nitrogen and hydrogen mixture in annealing furnace, open the intake valve on air inlet pipeline and dampness regulation valve, carried the nitrogen that dew point is-60 DEG C～-70 DEG C that comes by source of the gas and enter dampness tank, obtain the wet nitrogen of dew point-0 DEG C～-10 DEG C, wet nitrogen enters stove through filling line from soaking zone furnace bottom, mix with the hydrogen in stove, forming dew point is-27 DEG C～-35 DEG C of nitrogen hydrogen mixeding gas, the gas microgranule of high dew point is first enriched with in furnace roller non-strip steel contact surface roughness valley point, the high temperature strip steel that bringing-up section is come is encased, gas microgranule expanded by heating, the sponge iron on strip steel is effectively stoped to be bonded to tumor on furnace roller.
By Fig. 1 it can also be seen that nitrogen damping device is made up of the dampness tank 9 of the water inlet pipe of band water intaking valve 1, water injection tank 2 and scale with a scale, the top of water injection tank connects water inlet pipe, connects with dampness tank and communicate bottom water injection tank, dampness tank peripheral hardware dampness dew point display instrument 11；The side of water injection tank sets overflow pipe 3, and the mouth of pipe of overflow pipe is slightly above upper limit waterline, and the lower end of overflow pipe sets overflow valve 4, and the water level in suppression dampness tank is too high, reduces the moisture in nitrogen；Dampness tank side sets gauge box 12, gauge cassette bottom portion and upper side connect with dampness tank respectively and communicate, ensure that the water in dampness tank can enter in gauge box, in scale box, set upper limit water level magnetic flap Liquid level scale 13 and the water level magnetic flap Liquid level scale 14 that rolls off the production line.
Be it can also be seen that by Fig. 1, air inlet pipeline 22 is made up of air inlet pipe and dry gas arm, intake valve 5, air relief valve 6 and dampness regulation valve 7 is set successively in air inlet pipe, dry gas arm is set in the air inlet pipe of dampness regulation valve at air relief valve, dry gas regulation valve 8 is set on dry gas arm, air inlet pipe one end of air inlet pipeline is connected with nitrogen letter shoot 21, and the other end stretches into below the upper limit water level of dampness tank 9, and the dry gas arm of air inlet pipeline is connected with the top of dampness tank.Initial dew point be the nitrogen of-60 DEG C～-70 DEG C through intake valve, air relief valve, then regulate valve/dry gas regulation valve proportioning through dampness so that the dew point of wet nitrogen is easily controlled, it is ensured that the dew point of wet nitrogen-0 DEG C～-10 DEG C stably shows state.
Be it can also be seen that by Fig. 1, filling line is entered stove regulation valve 10, airway 23 and nozzle 25 and constitutes by escape pipe 24, dampness, set dampness on airway and enter stove regulation valve, airway one end enters stove regulation valve and is connected with dampness, the other end is all provided with escape pipe, and escape pipe is connected with the nozzle bottom annealing furnace soaking zone；End at airway sets condensed water elimination valve 20, discharges condensed water in time.
Claims (3)
- null1. a strip steel annealing furnace roller roll surface anti-dross device，Including annealing furnace (15)，Furnace roller (16) is set in annealing furnace，Annealing furnace soaking zone top peripheral hardware furnace chamber dew point display instrument (19)，Nitrogen letter shoot (21)、Hydrogen delivery tube (26) respectively with source of the gas、Gas hybrid station (27) connects，Gas hybrid station supplies to annealing furnace，Air inlet pipeline (22) is set on described nitrogen letter shoot，Air inlet pipeline outlet side is by nitrogen intake valve (5)、Air relief valve (6)、Dampness regulation valve (7)、Dry gas regulation valve (8) connects nitrogen damping device，Nitrogen damping device is entered stove regulation valve (10) by dampness、Filling line is connected to the dampness nozzle (25) bottom annealing furnace soaking zone，Air inlet pipeline、Nitrogen damping device、Filling line and annealing furnace form a gas passage，It is characterized in that，Described nitrogen damping device is by the water inlet pipe of band water intaking valve (1)、The dampness tank (9) of water injection tank (2) and scale with a scale is constituted，The top of water injection tank connects water inlet pipe，Connect with dampness tank bottom water injection tank and communicate，Dampness tank peripheral hardware dampness dew point display instrument (11)；The side of water injection tank sets overflow pipe (3), and the mouth of pipe of overflow pipe is slightly above upper limit waterline, and the lower end of overflow pipe sets overflow valve (4)；Dampness tank side sets gauge box (12), and gauge cassette bottom portion and upper side connect with dampness tank respectively and communicate, and sets upper limit water level magnetic flap Liquid level scale (13) and water level magnetic flap Liquid level scale (14) that rolls off the production line in scale box.
- Strip steel annealing furnace roller roll surface the most according to claim 1 anti-dross device, it is characterized in that, described air inlet pipeline (22) is made up of air inlet pipe and dry gas arm, intake valve (5) is set successively in air inlet pipe, air relief valve (6) and dampness regulation valve (7), dry gas arm is set in the air inlet pipe of dampness regulation valve at air relief valve, dry gas regulation valve (8) is set on dry gas arm, air inlet pipe one end of air inlet pipeline is connected with nitrogen letter shoot (21), the other end stretches into below the upper limit water level of dampness tank (9), the dry gas arm of air inlet pipeline is connected with the top of dampness tank.
- Strip steel annealing furnace roller roll surface the most according to claim 1 anti-dross device, it is characterized in that, described filling line is entered stove regulation valve (10) by escape pipe (24), dampness and airway (23) is constituted, set dampness on airway and enter stove regulation valve, airway one end enters stove regulation valve and is connected with dampness, the other end is all provided with escape pipe, and escape pipe is connected with the nozzle bottom annealing furnace soaking zone；End at airway sets condensed water elimination valve (20).
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| CN201410412836.2A CN104232877B (en) | 2014-08-21 | 2014-08-21 | A kind of strip steel annealing furnace roller roll surface anti-dross device |
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| CN201410412836.2A CN104232877B (en) | 2014-08-21 | 2014-08-21 | A kind of strip steel annealing furnace roller roll surface anti-dross device |
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| CN104232877B true CN104232877B (en) | 2016-08-03 |
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| CN104962709A (en) * | 2015-06-12 | 2015-10-07 | 内蒙古包钢钢联股份有限公司 | Novel silicon steel continuous annealing furnace nitrogen-hydrogen ratio humidification device and continuous annealing decarburization method |
| CN106676251B (en) * | 2017-01-24 | 2018-06-19 | 唐山钢铁集团有限责任公司 | A kind of device and method for preventing furnace roller dross in high-strength steel annealing process |
| CN106995876B (en) * | 2017-05-26 | 2018-05-15 | 鞍钢蒂森克虏伯（重庆）汽车钢有限公司 | A kind of annealing furnace humidifier pipe-line system and its operating method |
| CN107460432B (en) * | 2017-09-07 | 2019-06-28 | 马鞍山钢铁股份有限公司 | A kind of cold-strip steel pre-oxidation device |
| CN110218857B (en) * | 2019-06-24 | 2021-01-26 | 马鞍山钢铁股份有限公司 | Oxidation color strip steel annealing and decoloring device and oxidation color strip steel annealing and decoloring method |
| CN113063192B (en) * | 2021-04-06 | 2022-08-19 | 首钢京唐钢铁联合有限责任公司 | Humidifying device and humidifying method |
| CN113088672A (en) * | 2021-04-09 | 2021-07-09 | 马鞍山钢铁股份有限公司 | Humidifying control device for strip steel annealing furnace and atmosphere dew point control method thereof |
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