CN1425891A - Protective gas on-line purging copper tube bright continuous annealing furnace - Google Patents
Protective gas on-line purging copper tube bright continuous annealing furnace Download PDFInfo
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- CN1425891A CN1425891A CN 01139129 CN01139129A CN1425891A CN 1425891 A CN1425891 A CN 1425891A CN 01139129 CN01139129 CN 01139129 CN 01139129 A CN01139129 A CN 01139129A CN 1425891 A CN1425891 A CN 1425891A
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Abstract
The continuous copper tube bright annealing furnace features that there are air intake pipe and air exhaust pipe in the material rack; copper tube inner purging unit and inner air exhaust unit in the front chamber, heating chamber, water cooling chamber and forcing cooling chamber; that all the air intake pipes are communicated and so do the air exhaust pipes. The present invention may be used to produce bright copper tube with inner surface of superhigh cleanness. The annealing furnace also has the features of low manufacture cost, low air consumption, low power consumption, high production efficiency and continuous production.
Description
Technical field:
The present invention relates to nonferrous materials annealing process equipment, specifically a kind of band protective gas on-line purging copper tube bright continuous annealing furnace.
Background technology:
As everyone knows, copper pipe need be annealed at the annealing furnace in protective atmosphere or vacuum state under the different temperature for obtaining different mechanical propertys (soft attitude formula half-hard state) and having the surfaces externally and internally of light.Existing copper tube bright annealing furnace is a kind of to be the movably flue that (vertical or horizontal) has sealing, before heating flue being carried out forvacuum after the reinforced sealing outside stove handles, fill protection gas again, then flue being inserted process furnace heats, flue with heating places the outdoor cooling process of carrying out again, after the room temperature to be cooled the flue sealing door is opened the taking-up copper pipe, this kind annealing furnace is by whole heating of flue transmitted heat heating copper tube power consumption height, it is long to cool off the slow time simultaneously, furnace burdening is few, again can not continuous production, efficient is low; Another kind is domestic in recent years general just adopt expensive by the overseas-built continous way bright annealing oven that has the vacuum lock air chamber; its intake zone of this kind annealing furnace and discharge zone are two vacuum lock air chambers; respectively the gas of two Room is carried out vacuum-treat with the preceding need of discharging after each charging; charge into protection gas again; and by heating zone and the isolation of cooling room twice fire door, to prevent the copper pipe oxidation of heating and cooling process.The sealing difficulty of above-mentioned annealing furnace is big, the front and back secondary reformer door of particularly overseas-built continuous annealing furnace heating zone, often open and close automatically at furnace high-temperature and airtight condition lower furnace door, bear its installation making of the pyritous sealing material or the pressure mechanism of sealing and maintenance and all compare difficulty, the present domestic homemade continuous bright annealing furnace that has the vacuum lock air chamber that still do not have; The clean annealing furnace door of existing domestic band flue formula is owing to be mounted in the outer charging place outer end of stove, adopt heat-resisting 0 type rubber ring by being easier in press sealing all around and watercooling jacket cooling, but often distortion, poorly sealed, therefore normal open go into a large amount of hydrogen (more than 10%) reduce must light the surface, but copper pipe often causes the defective of hydrogen embrittlement; Because air-conditioning and refrigerator use floride-free copper pipe requirement to use the coil pipe of deep bid heavy (150-300kg/ dish), its internal surface requires the superelevation degree of cleaning less than 20mg/M over past in addition 2 years
2Be difficult to and reach thousands of rice and internal diameter has only inner air tube short period of time extraction in stove of several millimeters coil pipe through tight after-combustion with the method that vacuumizes; the also very difficult simultaneously protection atmospheric pressure by furnace chamber makes and is full of protection gas in the coil pipe pipe; cause annealing back selective oxidation in the pipe; blackout, the lubricating oil heated volatile cooling after stain copper pipe surfaces externally and internally that copper pipe is residual.Therefore manufacturer states annealing furnace in the use in order to obtain bright and clean internal surface, copper pipe be everlasting stove outward in advance with coil pipe by the dish clean, oil removing and fill into nitrogen, these are very difficult work, increase cost, reduce production efficiency, also be difficult to solve the discharging of volatile matter in the pipe in the heat-processed simultaneously, the copper pipe requirement of table superelevation degree of cleaning in therefore also not reaching.
Summary of the invention:
The object of the present invention is to provide a kind of new protective gas on-line purging copper tube bright continuous annealing furnace that has; replace and carry out preliminary vacuum processing and vacuum air-locked and need not the coil pipe internal surface is carried out in advance by the artificial purifying treatment of dish; produce air-conditioning, the bright copper pipe of table superelevation degree of cleaning in refrigerator (environmental protection fluorine-free product) is needed.
To achieve these goals; the technical scheme of the online purging copper tube bright continuous annealing furnace of shielding gas of the present invention is: a kind of protective gas on-line purging copper tube bright continuous annealing furnace; it mainly comprises body of heater; this body of heater comprises bin successively; cup; heating chamber; the water cooling chamber; strong cold house; it is characterized in that: bin is provided with inlet pipe and escape pipe; at cup; heating chamber; the water cooling chamber; the outer wall both sides of strong cold house are installed blow device and interior gas barrier of copper pipe and protection gas air feed gas barrier in the copper pipe respectively; inlet pipe in the copper pipe of each chamber in the blow device is connected and is communicated with the inlet pipe of bin, and the escape pipe in the copper pipe of each chamber in the gas barrier is connected and is communicated with the escape pipe of bin.
The present invention compared with prior art has following characteristics:
1, adopting the very low little restitutive protection's gas of purity rich oxygen content is source of the gas (N2:99.999%; H2:99.99%.Wherein H2 accounts for the mixed ratio of 1-3%), (100M of the supply different flow of the control regulated that different zones in annealing furnace (feed chamber, heating chamber, cooling room, strong cold discharge chamber) is continuous and discontinuous
3/ h-200M
3/ h) protective gas, make the annealing furnace internal pressure by two directions of discharge chamber after from heating chamber to stokehold feed chamber and stove from height to the low malleation (60mm-20mm water column) that keeps certain gradient.Heating expansible shielding gas with the evaporable dusty gas of air in the stove and heating back copper pipe surface by the stokehold after adjustable gas barrier at two ends, chamber get rid of the outer or part of stove and get rid of outside the stove by the front and back fire door that need not the high sealing degree; copper pipe in the stove is in the heating and cooling process in the protective atmosphere of little reductibility of malleation all the time; oxygen level obtains the copper pipe surface of light less than 30PPM in its stove.
2, install in certain position, the furnace outer wall both sides of each chamber of annealing furnace and can lead in the copper pipe of protecting gas gas barrier in the blow device and copper pipe.This device and appropriate length also have inlet mouth and the bin of venting port, inlet pipe and vapor pipe is connected on the certain position in stove, bin is accurately to locate by photoelectricity position-sensing switch and mechanical turnover panel, and blow device and gas barrier are communicated with the air inlet and the venting port of bin both sides.When purging in the pipe shielding gas of certain pressure (6kg) is communicated with coil pipe with coil pipe air inlet mouth of pipe connecting joint on the bin by the inlet pipe of bin; link to each other with escape pipe joint on the bin by the other end of the coil pipe mouth of pipe of giving vent to anger again; gas is got rid of outside the stove through being connected from the gas barrier of furnace side behind the coil pipe; can realize coil pipe feed chamber in stove like this; heating chamber; the protection air-blowing was swept in cooling room was constantly managed; air in the pipe can be discharged out of the furnace; outside the lubricant residue purging of heated volatile internal surface can being come out of the stove again; cold protection gas can quicken copper pipe cooling cooling in the time of simultaneously in the cooling section scavenging duct; shorten cooling time; and make the interior reservation of copper pipe protect gas; seal at the coil pipe two ends after coming out of the stove; make copper pipe in transportation and storing; the not contaminated for a long time and oxidation of pipe internal surface, the requirement that has realized producing bright copper pipe with superelevation degree of cleaning internal surface.
3, for the uniform mechanism performance of tubing after obtaining to anneal, Heating temperature is even, speed of cooling is fast and realize continous way production, double many insert heat radiation tubes heating is adopted in the heating zone, and have the thermal circulation fan and the strong cold blast engine of sealing gland and water-cooled sealing bearing, and internal cooling hydrologic cycle cooling system efficiently by the many groups of furnace roof.Roller-way transfer system and the outer bin circulation roller-way of stove that furnace bottom is made by heat-resisting steel rider transport system, constituted the closed cycle of continuous annealing, whole process is by the PLC procedure auto-control in the housing, display screen shows the production whole process automatically, and this annealing furnace also has low cost of manufacture, and air consumption is little, power consumption is little, the production efficiency height, easy to operate, the quantity-produced characteristics.
Description of drawings:
Fig. 1 is the structural representation of one embodiment of the invention
Fig. 2 is the interior blow device synoptic diagram of the copper pipe among Fig. 1
Embodiment:
Below in conjunction with drawings and Examples the present invention is further described.
The present invention includes body of heater 1, this body of heater mainly comprises bin 2 successively, cup 3, heating chamber 4, water cooling chamber 5, strong cold house 6, it is different from prior art and is: bin 2 is provided with inlet pipe and escape pipe, at cup, heating chamber, the water cooling chamber, blow device 8 and the interior gas barrier of copper pipe in the copper pipe are all installed in the outer wall both sides of strong cold house, blow device is identical with the structure of gas barrier in the copper pipe in the copper pipe, just the inlet mouth of blow device is the venting port of gas barrier in the copper pipe in the copper pipe, inlet pipe in the copper pipe of each chamber in the blow device is connected and is communicated with the inlet pipe of bin, and the escape pipe in the copper pipe of each chamber in the gas barrier is connected and is communicated with the escape pipe of bin.Be provided with double many heat radiation tubes at heating chamber 4 in the enforcement, be provided with thermal circulation fan 9 and strong cold blast engine 10 and corresponding cooling at the top of body of heater, be proven technique about thermal circulation fan, strong cold blast engine and corresponding cooling, just on this annealing furnace, use, this not enough detailed description in detail; Blow device 8 moves cylinder 11 in the copper pipe in force; on mobile cylinder 11, be provided with compressed air inlet 12; mobile cylinder 11 is connected with sliding seal 14 by a connection piece 13; on sliding seal 14, be provided with and purge protection gas import 15; can slide in purging movable head 17 in the end 16 of this sliding seal; in purging movable head 17, be provided with through hole 18; be provided with sealing-ring 19 at purging movable head end face; on bin 2, coil pipe is housed; one side of bin is equipped with inlet pipe; the opposite side of bin is equipped with escape pipe; before; but back chamber fire door has two automatic lifting sealing doors; the isolation fire door that automatic lifting is arranged between each chamber in the body of heater; before; be equipped with protection gas air seal set and reach at heating chamber at the fire door place of back chamber; the water cooling chamber; be equipped with and replenish diffuser and protection gas air feeder fast strong cold house; before; two adjustable gas barrier 7 and exhaust water seal arrangement also are equipped with up and down in fire door place, back chamber; the length of each chamber be slightly larger than a bin length and with bin inlet mouth and both sides, furnace wall, the corresponding position of venting port be equipped with purge in the pipe and manage in gas barrier, below be further described with prior art and in conjunction with some above-mentioned features.
1, cup
But this fire door place, chamber reaches with the heating chamber connecting place two automatic lifting sealing doors are arranged, fire door compresses fire door by decline power automatically by crank mechanism on the fire door and stage clip and crank chute, and its sealing material selects the heat-resisting polyamine fat of orthogonal seal strip edge to admire in the rectangular tank of furnace chamber port.Be equipped with protection gas air seal set and before the end of feed chamber and heating chamber fire door fast additional diffuser be housed at the fire door place of cup; its effect is to prevent that by the fire door sealing gland air moment from entering cup when door opened charging, and opens air displacement plug for outlet from charging to fire door and venting port that the terminal protection air-flow that replenishes the big flow of diffuser fast carries during with.Two adjustable gas barrier and exhaust water seal arrangement also are equipped with up and down in cup ingress, and its effect is that the volatilization gas of the little air of cup and heating chamber and pollution is discharged out of the furnace by malleation in the stove and the displacement of heating expansible protection gas.By the pressure in the adjustable size joint stove of regulating free air delivery and gas supply flow.The length of cup be slightly larger than a bin length and with bin inlet mouth and both sides, furnace wall, the corresponding position of venting port be equipped with purge in the pipe and pipe in gas barrier protect gas with online purging in realizing managing.
2, heating chamber
This chamber has two with two identical fire doors of the described structure of cup, closes automatically during heating.Its furnace roof both sides have double 4 groups of plug-in type electromagnetics to add heat radiation tube and insert the Heating temperature that four zones of heating chamber were controlled and measured to the thermometric thermocouple tube respectively in 4 zones.Furnace roof is equipped with four groups of thermal circulation fans with sealing bearing of sealing gland and water-cooled, makes the protection gas of continuous supply and the copper pipe temperature of heating be replaced and stir.The terminal furnace wall side of heating chamber (by colling end) is equipped with adjustable continuous air feeder, supplies with protection gas incessantly in heating chamber, and makes the high malleation of maintenance 40-60mm water column in the heating chamber.The oxygen level of this chamber should be guaranteed below 30PPM.Equally in the protection tracheae is equipped with in the stove both sides of the air inlet of this chamber and bin and the corresponding position, mouth of pipe place of giving vent to anger blow device and manage in gas barrier; in heat-processed, can purge automatically discontinuously, till the clean non smoke of eliminating gas of the heated volatile of discharging.
3, cooling room (1# water cooling chamber, 2# water cooling chamber)
This chamber adopts the ten sections water coolers by heat exchange in two Room to form cooling system in order to obtain quick and uniform cooling performance, and every section water cooler is formed by separating four groups of cold sink water tanks up and down respectively, surrounds furnace chamber.Every section water cooler is supplied with by the big flow cooling water of the 1-2kg pressure of independent relief valve adjustment, the water inlet pipe of every group of water cooler is equipped with can be regulated and displayable rate of flow meter, regulate and the controlled chilling flow, simultaneously every group of water shoot converges in to concentrate in the open type square-shaped hopper water tank and is discharged to the main discharge pipe road, and totally 10 groups of water drain funnel water tanks are installed in the cooling water pipeline system of cooling room side.Reduce to about 200 ℃ from heating chamber 500-600 ℃ the high temperature in back that comes out in order to ensure coil pipe, the length of this chamber can be placed the length of two bins simultaneously, promptly can be successively in continuous production the coil pipe of two bins be cooled off.The end of cooling room connects the isolation fire door that strong cold discharge chamber is equipped with the same identical automatic lifting, and part air admission cooling room is arranged when preventing the discharge chamber discharging.Cooling room in the overseas-built continuous annealing furnace is to have adopted compulsory outdoor refrigerating unit; promptly the vacuum fan of indoor heat protection gas by big flow extracted through the outer heat exchange water cooler of stove and cool off; blast the cooling that circulates in the stove again; though effect is preferably also arranged; but make the interior protection wave of stove move too greatly even influence the protective atmosphere of adjacent heating chamber; and consume a large amount of protection gas; simultaneously because very fast from the high temperature cooling rate; need not to adopt and force outer circulation to be cooled off; and the cost height, bulky and bigger noise arranged.
4, strong cold house
About 200 ℃ of the material temperature of coming out from cooling room, it is slow to reduce to room temperature again, and the time is long, therefore must take mandatory quick cooling discharging.This annealing furnace adopts by furnace roof in this strong cold house and forces cooling blower for 4 groups, and stove inwall both sides strong convection heat exchange system has constituted through the high-efficiency water cooling formula water cooler of stove inwall forces refrigeration cycle to reach the effect of fast cooling.Simultaneously because in the same identical pipe is equipped with in the both sides, chamber, purge and pipe in gas barrier the cold protection gas that the coil pipe on the bin purges is once more made the copper pipe fast cooling; and front end in this chamber; promptly be equipped with the identical fast additional diffuser of cup near the fire door place of cooling room; with the discharging process coil pipe being carried out indoor fast big flow air feed before opening the fire door discharging purges; promptly can assist cooling, enter air in the time of can preventing the fire door discharging again.At discharging stove gate place the fire door sealing gland air feeder identical with cup is housed equally fire door is carried out sealing gland.Before fire door, still be equipped with cup identical adjustable exhaust and water seal arrangement.
5, sweeping type bin and automatic blowout device
Realize continuous production in order to be implemented in the furnace annealing process in each indoor pipe that carries out discontinuous, to purge, the sweeping type bin of development is by the effective width in the burner hearth and the required bin length of certain loading capacity is arranged and allow length accordingly with each chamber, weld the higher bin of making of planeness by square hollow high temperature steel, on the one side steel of its bin the inlet pipe threaded end (TE) that the dish that can load at most with coil pipe on the bin is counted equal amts is housed, be used for connecting the high temperature stainless steel metallic hose that air inlet is used, the other end of metallic hose is equipped with the outside one end mouth of pipe insertion connection chucking of dismountable rapid-acting coupling with coil pipe.Be furnished with same vapor pipe threaded end (TE) on the opposite side square steel of bin and be used for connecting the high temperature stainless steel metallic hose that exhaust is used, the other end of metallic hose is equipped with the end mouth of pipe insertion connection chucking of dismountable rapid-acting coupling with the coil pipe inboard.Bin both sides square steel respectively has the plane inlet mouth and the venting port of symmetrical certain latus rectum in certain position; so that purging the plane exhaust joint of joint and gas barrier, the plane of blow device is connected; constituted the gas barrier of the venting hole → furnace side, plane on the square steel threaded end (TE) → bin square steel of an end mouth of pipe → dismountable cassette joint → hot metal flexible pipe → bin opposite side of the cassette joint of furnace side blow device → bin square steel plane air inlet port → bin air inlet square steel threaded end (TE) → hot metal flexible pipe → quick distachable → pipe end → coil pipe → coil pipe inboard, coil pipe outside, constituted in the shielding gas pipe and purge and deflated sealing and circulating gas circuit.Purge in the pipe that install in stove outside, each chamber and move protection air-blowing that cylinder is connected by pressurized air respectively with gas barrier and sweep the plane sweeping head and the exhaust head that have a sealing with exhaust slip cylinder and slip cylinder end portion and form.Such as " pipe in blow device " figure signal.The purging pressure of protection gas is 6kg, and compressed air pressure is 4-6kg.
6, the circulation device of rollgang and bin
For continuously feeding and discharging that guarantees annealing furnace and the circulation that is loaded with the bin of copper pipe, the furnace bottom of whole annealing furnace by variable-frequency motor and optoelectronic switch automatically control form by the roller-way that the speed of processing requirement transmits, swings, stops, the roller-way of heating zone is selected the heat-resistance stainless steel roller for use, the transmitting gear of roller-way and chain transmission mechanism are installed in the stove outside, and roller-way drive bearing and furnace wall connect by the sealed bearing of Castor Oil.Feeding roller table before two fire doors of chamber is electronic after by the stokehold mobile trolley usedly forms with the electronic mobile trolley used bin delivery roll railway roadbed consistent with the annealing furnace total length with vertically being arranged in the furnace side of discharging roller-way for the stove external circulating system of bin.The delivery roll that all transmits roller-ways can be controlled automatically by driving chain mechanism and will pass in and out bin and transmit automatically by certain quick-action, has constituted bin from the closed cycle outside stove in the stove, realization annealing furnace continuous production.
7, electric control system
Whole electrical control is by housing, the man-machine interface display screen, and push button, temperature control shows compositions such as moisture recorder.
Driving part: variable-frequency motor is adopted in main transmission, according to processing requirement, and the variation of realization speed and direction in the corresponding time period.
Temperature control: adopt imported with original packaging thermograph and controller, PID regulates and from adjusting, realizes fast and the accurately control of temperature; Two thermoelectric corners of field by using, realize temperature control and record synchronously, recording process temperature accurately, centralized Control and man-machine interface adopt import PLC program controller and touch control display screen.PLC realizes the accurate control of whole annealing furnace.Man-machine interface close friend, opening, the work condition state that shows whole annealing furnace fully in real time, indicate the current position of each bin and the working order of each work area accurately, and show corresponding alarm message timely, make operator can accurately and timely grasp the working order of annealing furnace, guarantee normal, stable production.Can also select different processing sequencees and corresponding processing parameter by the man-machine interface display screen, the technologist can carry out the modification and the adjustment of main technologic parameters easily.After parameter chooses, can send into PLC automatically and control automatically.
Provide the embodiment of the annealing furnace of development below
Annealing furnace is respectively by the mobile trolley used formation that can put the cup, heating chamber, cooling room (can put two bin length) and strong cold discharge chamber and former and later two the electronic input and output materials that carry the long bin of 8.5M, length overall 65M, the bin transfer roller railway roadbed of furnace side respective length arranged side by side.Effective width 1.5M in the stove, height 420mm.10 external diameter φ 900mm can be housed, the coil pipe of the after-combustion of height 280mm, the heavily about 150kg-200kg of every dish on each bin.Each bin passed through cup one hour, heating zone one hour, cooling room two hours, strong cold discharge chamber 45 minutes.Can be placed with 5 bins continuously simultaneously in the annealing furnace, on average per hour go out a bin, promptly hour turnout is 1.5T-2T.Other parameter of annealing φ 9.52 * 0.6 air-conditioning coil pipes is, 550 ℃ of Heating temperatures, and temperature fluctuation interval, four districts is 449 ℃-551 ℃.The protection gas that feeds, high purity nitrogen 99.999% and pure hydrogen 99.99% are joined hydrogen than being 1.5-2%; for protection atmospheric pressure 2kg in the stove; purge protection atmospheric pressure 6kg, cooling circulating water intake pressure 1.5kg, the heating zone oxygen level 16PPM that records; heating zone furnace pressure 60mm water column; chamber, front and back furnace pressure 20mm water column, 30 ℃ of drop temperatures, the tensile strength of the copper pipe different zones of mensuration is 251-260MPA; the standard that meets soft state property energy, the table degree of cleaning are 3.8mg/m in the copper pipe that records
2(Shanghai Inst. of Materials's test report) (is every m
2Pipe internal surface contain 3.8 milligrams dustiness) be far smaller than national standard 38mg/m
2And the superelevation degree of cleaning are less than 20mg/m
2The world use standard.Electrothermal radiation tube heating power summation is 300KW, and calorifier and circulation cold air machine and transmission power total power are 80KW, and this annealing furnace is actual effectively to use power to be 200KW.The throughput that has vacuum air-locked 2 than import
TThe annealing furnace of/h is with saving about 20%.Consume protection gas consumption instantaneous peak value 250M
3/ h, average gas consumption 180-200M
3/ h is than import band vacuum lock air chamber stove saving protection gas 30%.The shielding gas station that this process furnace uses is by a 20M
3Liquid nitrogen container, 2 300M
3Vaporizer and nitrogen hydrogen blender form, reduce by a 20M than the annealing furnace of import
3Nitrogen pot.Cooling circulating water is by 100M
3Cooling tower and 100M
3The high-level or low-level water case, hot water or cold water's pipe circle pump of big flow and electric water treatment device constitute, and have guaranteed annealing furnace cleaning and the use of refrigerative recirculated water.
Claims (5)
1; a kind of protective gas on-line purging copper tube bright continuous annealing furnace; it mainly comprises body of heater; this body of heater comprises bin successively; cup; heating chamber; the water cooling chamber; strong cold house; it is characterized in that: bin is provided with inlet pipe and escape pipe; at cup; heating chamber; the water cooling chamber; the outer wall both sides of strong cold house are installed blow device and interior gas barrier of copper pipe and protection gas air feed gas barrier in the copper pipe respectively; inlet pipe in the copper pipe of each chamber in the blow device is connected and is communicated with the inlet pipe of bin, and the escape pipe in the copper pipe of each chamber in the gas barrier is connected and is communicated with the escape pipe of bin.
2, by the described a kind of protective gas on-line purging copper tube bright continuous annealing furnace of claim 1, it is characterized in that: be provided with double many heat radiation tubes at heating chamber, be provided with thermal circulation fan and strong cold blast engine and corresponding cooling at the top of body of heater.
3, by the described a kind of protective gas on-line purging copper tube bright continuous annealing furnace of claim 1; it is characterized in that: blow device moves cylinder in the copper pipe; on mobile cylinder, be provided with compressed air inlet; mobile cylinder is connected with sliding seal by a connection piece; on sliding seal, be provided with and purge the import of protection gas; can slide in purging movable head in the end of this sliding seal, be provided with through hole in purging movable head, is provided with sealing-ring at purging movable head end face.
4, by the described a kind of protective gas on-line purging copper tube bright continuous annealing furnace of claim 1, it is characterized in that: coil pipe is housed on bin, and a side of bin is equipped with inlet pipe, and the opposite side of bin is equipped with escape pipe.
5; by the described a kind of protective gas on-line purging copper tube bright continuous annealing furnace of claim 1; it is characterized in that: preceding; but back chamber fire door has two automatic lifting sealing doors; the isolation fire door that automatic lifting is arranged between each chamber in the body of heater; before; be equipped with protection gas air seal set and reach at heating chamber at the fire door place of back chamber; the water cooling chamber; be equipped with and replenish diffuser and protection gas air feeder fast strong cold house; before; two adjustable gas barrier and exhaust water seal arrangement also are equipped with up and down in fire door place, back chamber, the length of each chamber be slightly larger than a bin length and with bin inlet mouth and both sides, furnace wall, the corresponding position of venting port be equipped with purge in the pipe and manage in gas barrier.
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| CN 01139129 CN1425891A (en) | 2001-12-20 | 2001-12-20 | Protective gas on-line purging copper tube bright continuous annealing furnace |
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| CN101363071B (en) * | 2008-09-27 | 2010-06-16 | 杭州金舟电炉有限公司 | Brilliant isothermal normalizing production system |
| CN102586577A (en) * | 2012-03-09 | 2012-07-18 | 辽宁科技大学 | Continuous reduction annealing furnace for sheet metal strips |
| CN102941241A (en) * | 2012-10-17 | 2013-02-27 | 青岛宏奥铜管有限公司 | Processing method used for Y2 state copper pipe |
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| CN109628863A (en) * | 2018-12-04 | 2019-04-16 | 苏州中门子工业炉科技有限公司 | High-temperature nickel-base alloy tubing perhydro light solution heat treatment roller bottom furnace and technique |
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| CN101363071B (en) * | 2008-09-27 | 2010-06-16 | 杭州金舟电炉有限公司 | Brilliant isothermal normalizing production system |
| CN103131839A (en) * | 2011-12-01 | 2013-06-05 | 湖南晟通科技集团有限公司 | Furnace body of continuous annealing furnace |
| CN103131839B (en) * | 2011-12-01 | 2016-05-25 | 晟通科技集团有限公司 | A kind of body of heater of continuous annealing furnace |
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