CN1939620A - Method and apparatus for heating thin-band continuous-casting crystallized roller - Google Patents
Method and apparatus for heating thin-band continuous-casting crystallized roller Download PDFInfo
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- CN1939620A CN1939620A CN 200510030205 CN200510030205A CN1939620A CN 1939620 A CN1939620 A CN 1939620A CN 200510030205 CN200510030205 CN 200510030205 CN 200510030205 A CN200510030205 A CN 200510030205A CN 1939620 A CN1939620 A CN 1939620A
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Abstract
A method for heating the crystallizing roller used for conticasting thin band features the flame wall generated by oxygen fuel is used the heat the crystallizing roller, that is, the mixture of the combustion improving gas and gas or liquid fuel is ignited by multiple oxygen flame torches to form a flame wall to heat said crystallizing roller for preventing the early solidification of molten metal.
Description
(1) technical field
The present invention relates to sheet metal (band) continuous casting crystallization roller heating technique and oxygen fuel heating technique.
(2) background technology
The continuous casting technology of metal sheet band (plate) has efficiently, low consumption, characteristic cheaply, is the countries in the world new technology and the new technology of falling over each other to develop in recent years.Wherein the crystallization roller is one of critical component in strip (plate) the continuous casting plant equipment.Its basic principle is that molten steel enters the molten bath of being made up of the crystallization roller and the side seal board of two reverse rotations by current distribution device, and liquid metal is frozen at crystal roller surface through quick cooling has certain thickness base shell, closes back formation strip (plate) through rolling.The basic structure of crystallization roller mainly is made up of roller core, roller shell.Its crystallization roll sleeve material mostly adopts the Cu alloy material manufacturing, and its roller core adopts the stainless steel manufacturing usually.Roller core and roller shell link together by the mode of mechanical mode or welding.
Non-ferrous metal such as aluminium that twin roller casting can solidify rapidly when comparatively successfully being applied to cool off always.But the solidification rate of ferrous metal will be slowly many, can carry out satisfactorily for making continuous casting, realize that at casting surface cooling has uniformly just become crucial problem with solidifying.But this is to be difficult to realize, especially in casting just at first.Generally need make motlten metal by carrying the metal bath that constitutes by refractory material and crystallization roller in the geat at metal.Owing to directly contact with molten metal at smooth working section crystallization roller roll surface, the calorific value height of molten metal is so heat-conductive characteristic is the most important requirement of crystallization roller case material.But the initial period when continuous thin-belt casting, because crystallization roll sleeve and inner cooling fluid all are under the relatively low state of temperature, cooling effectiveness when therefore the cooling effectiveness of crystallization roller is higher than the smooth working section, so caused the molten metal cooling velocity too fast, through behind the crystallization roller broken belt taking place, what influence was produced normally carries out.Though casting open water before metal often pass through preheating stronger because the crystallization roll temperature is low to the cooling capacity of molten metal, still may make the motlten metal premature setting, when especially just having begun casting and being cast into strip, this phenomenon may be more remarkable.Therefore always need be to the geat conveying molten metals under than the much higher temperature of motlten metal liquidus curve temperature, flow through geat or can premature setting in crystallization roller molten bath so that guarantee at it.In order to realize this point, need carry out thermal compensation, so adopt the motlten metal before the cast of crystallization roller need surpass the temperature of normal cast temperature more than 100 ℃.
At present in order to improve the crystallization roller in the temperature of opening before watering, United States Patent (USP): 4,645, when No. 534 motlten metal being flowed to the continuous casting mould by tundish and immersion cast gate, by metal being provided the mode of supplementary heating prevent premature setting, way is to make electric current pass through motlten metal from heater such as plasma arc torch.Heater can be applied to the metal in the tundish, makes electric current flow to metal in the continuous casting mould by the immersion cast gate that flows to the tundish downstream.Japan Patent J91018979-B (publication number J59202142) also described when motlten metal when tundish flows to the continuous casting mould by the immersion cast gate, make the anode that is connected in the immersion cast gate from the current direction of the plasma arc torch in the tundish, thus the heating and melting metal.These two described technical schemes of patent are not to be directly used in the thin plate twin roller casting.In casting process, can not overcome the motlten metal premature setting problem of starting stage in induction system by instantaneously heated mode, this is because can not make heat enter metal with enough big speed, perhaps also the heat transmission can not be controlled at an enough big degree so that keep temperature, thereby keep flow rate by the flow channel of induction system.Patent publication No. CN1100978A provides a kind of elder generation to add the method for hot molten metal in the casting pond, makes motlten metal deliver to delivery port in the starting stage with higher temperature, delivers to the conveying cast gate with lower temperature At All Other Times in the casting.But this method is crossed the amount and the temperature of hot molten metal and all is difficult to control, especially still easily therefore produces broken belt under the strip working condition.
Above patent all needs to adopt overheated metal, need consume a large amount of energy but a large amount of motlten metals is heated to said temperature, and can produce broken belt when beginning to cast when the casting strip, and this all will badly influence production cost.And high temperature has also limited the productivity ratio of casting machine, and reduces temperature of melt metal, can obtain higher solidification rate, promptly reaches high productivity ratio.
(3) summary of the invention
The object of the present invention is to provide a kind of thin band continuous casting crystallization roller heating means and device, be to utilize combustion gas and combustion-supporting gas to form the heating technique of oxygen fuel flame curtain wall, to the heating in advance of crystallization roller, when the duty of crystallization roller near or when reaching actual casting smooth working section, begin the casting of metal again, thereby solved the motlten metal premature setting problem when thin strap continuous casting begins to cast.
The present invention is achieved in that a kind of thin band continuous casting crystallization roller heating means, it is characterized in that the crystallization roller is heated, actual hot input process when its heating technique can be simulated the smooth working section of thin strap continuous casting, when the duty of crystallization roller near or when reaching actual casting smooth working section, begin the casting of metal again, make the casting of metals process directly start from normal smooth working section.
Above-mentioned thin band continuous casting crystallization roller heating means, described heating technique is an oxygen fuel flame curtain wall formula, combustion-supporting gas cuts mutually to form by nozzle ejection back separately with gas or liquid fuel and mixes, through the oxygen torch igniting of divergence expression, a plurality of oxygen torch flames are intertwined to form flame curtain wall heating thin band continuous casting crystallization roller.
Cut off the fuel and the combustion-supporting gas steam line of heating technique after above-mentioned thin band continuous casting crystallization roller heating means, described motlten metal begin to cast, switch to refrigerating gas, realize cooling the crystallization roller.
Above-mentioned thin band continuous casting crystallization roller heating means, described oxygen torch mouth can be formed by single mouth staggered pattern, short slit forms grid and forms, the formation that is arranged in parallel of long slit also can form mesh plate by fuel jet orifice and form, and also can be formed by the jet orifice plate that a plurality of spray orifices form.
A kind of thin band continuous casting crystallization roller heater, it is characterized in that adopting the heating of oxygen fuel flame curtain wall, it comprises curtain wall base plate, curtain wall substrate, oxygen torch mouth, igniter, two main gas tube roads, the curtain wall substrate is housed on the curtain wall base plate constitutes the thermal treatment zone, arranging a plurality of oxygen torch mouths on the curtain wall substrate, the interlaced arrangement of oxygen torch mouth is provided with igniter between the oxygen torch mouth of periphery, the thermal treatment zone; The curtain wall substrate is made up of two symmetrical upper and lower cavitys, cavity is made of upper and lower shrouding, intermediate plate, two side seal boards, intermediate plate one end top is bent into the top, other end top is bent into and presses down, make upper and lower cavity comprise a thick square opening pipe portion and a narrow flat part, thick square opening pipe portion communicates with narrow flat part and connection place becomes fillet; The logical main gas tube road of thick square opening pipe portion, upper cavity leads to fuel, and lower chamber leads to combustion-supporting gas; Intermediate plate has air guide awl and oxygen jet near lower chamber one side, has screw near upper cavity one side, and screw communicates with oxygen jet, and the mixing tube of spinning oxygen torch mouth on the screw, and the number of the oxygen torch mouth of installing on the number of screw and the substrate is consistent; There is convex shoulder the mixing tube outside and has external screw thread, the mixing tube bottom is screwed on the intermediate plate screw, the oxygen torch cap internal thread that the upper sealing plate duct is rotatably connected in oxygen torch mouth is passed on top, having nozzle on the convex shoulder enters in the mixing tube fuel in the upper cavity, convex shoulder compresses through oxygen torch cap intermediate plate and upper sealing plate is sealed, and oxygen torch crown portion has spray orifice.The spray orifice of described oxygen torch crown portion is a center of orifices, other spray orifice that around center of orifices, evenly distributes, and other spray orifice and center of orifices are certain angle.
Above-mentioned thin band continuous casting crystallization roller heater; two branch roads are equipped with on described two main gas tube roads respectively; two branch roads on a main gas tube road connect fuel and inertia protection refrigerating gas respectively; two branch roads on another main gas tube road connect combustion-supporting gas and inertia protection refrigerating gas respectively, and each branch road all is equipped with reverse gas stop valve.In fuel and the combustion-supporting gas branch road flow sensor is housed also, pressure sensor is housed in the both sides on main gas tube road.
The difference of the present invention and conventional art is: technology in the past is absorbed in the heating and melting metal, by improving the heat loss that temperature of melt metal compensates the casting starting stage; The technology of the present invention is to adopt the technology that adds the thermal crystalline roller, actual hot input process when heating technique can be simulated the smooth working section of thin strap continuous casting, when the duty of crystallization near or when reaching actual casting smooth working section, begin the casting of metal again, make the casting of metals process directly start from normal smooth working section, avoided the motlten metal premature setting problem of starting stage.Perhaps dwindle the temperature difference of burning between casting starting stage and the normal smooth working section.The present invention adopts oxygen fuel flame curtain wall formula heating technique, by the heating crystal roller surface, to reach the heat input identical or close with the actual casting process of thin strap continuous casting, make the crystallization roller reach the working stability state in advance, the motlten metal of eliminating the casting starting stage stands the Quench of cold conditions continuous casting roller and the premature solidification problem occurs.Fuel shutoff and combustion-supporting gas switch to refrigerating gas after beginning to cast, and can realize crystallization roller cooling purpose.
The oxygen fuel flame curtain wall of heating technique of the present invention can adopt several different methods to form.For example form the oxygen flame of the high heat of high temperature at combustion torch mouth by oxygen and fuel, a plurality of oxygen fuel flame mouths form flame row, come certain distance by another flame again and arrange its gap of filling, many row's torch mouth alternating expressions are arranged, the flame torch is overlapped mutually in a distance, thereby a plurality of flame row forms the purpose that a uniform flame curtain wall reaches uniform high-efficiency heating crystal roller surface; Also can form, also can form grid by slit by flat flame slit; Also can form mesh plate by fuel jet orifice and form, the formation that is arranged in parallel of long slit also can be formed by the jet orifice plate that a plurality of spray orifices form.Oxygen fuel flame curtain wall device also has the refrigerating gas switch valve, can cool off the crystallization roller.
(4) description of drawings
The invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is an oxygen fuel flame curtain wall construction schematic diagram of the present invention;
Fig. 2 is an oxygen fuel flame curtain wall substrate cross-sectional structure schematic diagram;
Fig. 3 is intermediate plate and an oxygen torch mouth structure schematic diagram in the oxygen fuel flame curtain wall substrate.
Among the figure: 1 curtain wall base plate, 2 igniters, 3 oxygen torch mouths, 4 branch roads, 5 stop valves, 6 gas gauges, 7 main gas tube roads, 8 curtain wall substrates, 9 times shroudings, 10 intermediate plates, 11 upper sealing plates, 12 oxygen jets, 13 mixing tubes, 14 fuel nozzles, 15 oxygen torch caps, 16 spray orifices, 17 upper cavities, 18 lower chambers.
(5) specific embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of thin band continuous casting crystallization roller heater is to adopt oxygen fuel flame curtain wall heating technique, and it comprises curtain wall base plate 1, curtain wall substrate 8, oxygen torch mouth 3, igniter 2, two main gas tube roads 7.Oxygen fuel flame curtain wall construction is based on curtain wall base plate 1, and oxygen torch mouth 3 is evenly distributed in the thermal treatment zone of base plate in some way, and oxygen torch mouth 3 spacings are 3cm, interlaced arrangement, and the thermal treatment zone is the square frame district in the base plate 1 among Fig. 1, is curtain wall substrate 8.The oxygen torch mouth 3 of periphery, the thermal treatment zone is equipped with igniter 2, guarantees the validity of igniting.Oxygen fuel flame curtain wall is provided with two main gas tube roads 7, and two branch roads 4 are equipped with on each main gas tube road respectively.Logical respectively fuel of two branch roads 4 on one of them main gas tube road 7 and inertia protection refrigerating gas; Logical respectively combustion-supporting gas of two branch roads 4 on another main gas tube road 7 and inertia protection refrigerating gas.Reverse gas stop valve 5 all is housed in each branch road 4, prevents the reverse flow of gas and the tempering of curtain wall, in fuel and combustion-supporting gas branch road 4, flow sensor is housed also.In the both sides on main gas tube road 7 pressure sensor 6 is housed.So that interior fuel of control curtain wall and combustion-supporting gas ratio.
Referring to Fig. 2, oxygen fuel flame curtain wall substrate 8 structures are made of two symmetrical upper and lower cavitys 17,18.Cavity is made up of upper sealing plate 11, following shrouding 9, intermediate plate 10, two side seal boards, intermediate plate 10 1 end tops are bent into the top, other end top is bent into and presses down, make upper and lower cavity 17,18 comprise a thick square opening pipe portion and a narrow flat part, thick square opening pipe portion and narrow flat part communicate, be connected and locate to be prepared into fillet, so that gas or fuel is not by there being the loss of pressure.Thick square opening pipe portion is oxygen or fuels sources, and narrow flat part is used to distribute the position of oxygen torch mouth 3 and prepare fumarole or oxygen torch mouth 3 installing holes.Wherein upper cavity 17 is the source of supply of fuel, the effect that thick square opening pipe portion plays steady fuel and distributes fuel, and all oxygen torch mouths 3 all are installed in the narrow flat part of upper cavity 17.Lower chamber 18 is the combustion-supporting gas source, the double action that thick square opening pipe portion plays gas collection district steady pressure and distributes oxygen.Cavity 17,18 is separated by intermediate plate 10 up and down, the effect that act as conducting oxygen and oxygen torch mouth 3 is installed of intermediate plate 10.
Referring to Fig. 3, oxygen fuel flame curtain wall substrate 8 interior shroudings 9 down are single structure.Intermediate plate 10 structures are comparatively complicated, have air guide vertebra and oxygen jet 12 in the side near lower chamber 8, and the oxygen in the lower chamber 18 enters oxygen torch mouth 3 inside by nozzle 12; Have the mixing tube 13 that screw is used to install oxygen torch mouth 3 in a side, and play the effect of sealed fuel near upper cavity 17; Screw communicates with oxygen jet 12.On the intermediate plate 10 on number and the substrate 8 of this structure of preparation the number of the oxygen torch mouth 3 of installation consistent.
There is convex shoulder mixing tube 13 outsides and has external screw thread, mixing tube 13 bottoms are screwed on intermediate plate 10 screws, oxygen torch cap 15 internal threads that upper sealing plate 11 ducts are rotatably connected in oxygen torch mouth 3 are passed on top, having fuel nozzle 14 on the convex shoulder enters in the mixing tube 13 fuel in the upper cavity 17, convex shoulder compresses through oxygen torch cap 15 intermediate plate 10 and upper sealing plate 11 is sealed, in order to isolated outside air.
Oxygen torch cap 15 has the last threaded engagement of internal thread and mixing tube 13, has spray orifice 16 at the top.The structure of spray orifice 16 is the spray orifice with a center, other the spray orifice of around center of orifices, evenly distributing, and these spray orifices and center of orifices are certain angle, play the effect that diversity flame evenly heats.
The present invention adopts oxygen and the fuel injection stream by two kinds of materials in torch to cut the mixed method that interweaves mutually, improves mixing efficiency, and the mixed zone is little and be applicable to pluralities of fuel.The flame characteristic that obtains thus is a divergence form flame, and the yet form to disperse of the heating of flame is not that focused beam neither parallel beam.
Several architectural features to oxygen fuel flame curtain wall are specifically described below.
1, the structure of oxygen torch mouth.Different oxygen flame mouths is selected in concrete job requirement according to the crystallization roller.Fuel can be selected hydrogen, natural gas, ethanol, acetone, acetylene, kerosene etc., and optimal gas is lower gas or the liquid fuels of carbon content such as hydrogen, natural gas and ethanol; Combustion-supporting gas adopts oxygen or compressed air, and best combustion-supporting gas is an oxygen.The mode that the structure of flame mouth can select fuel and combustion-supporting gas to spray respectively also can adopt fuel and combustion-supporting gas to mix earlier the mode of common ejection then.To be fuel eject the mode that mix the back respectively with combustion-supporting gas to best mode, can effectively reduce the speed of air-flow and adopt the structure dispersed flame of flame mouth, makes that the flame heat area is big, temperature even, temperature underspeeds little.
2, the arrangement of flame mouth.The alternating expression that is arranged as of flame mouth is arranged, and can effectively fill the gap between each flame mouth, make the flame curtain to add thermal effect more even.The spacing density that the flame mouth is arranged is 1.5 times to 2.0 times of flame diameter.Slit length can be identical with crystallization roller length in the slit structure, also can be shorter than crystallization roller length.The mesh-type structure is identical with flame mouth formula structure.
3, the length of flame curtain and width.The length of flame curtain is identical with the face length of crystallization roller; The width of flame curtain is close or identical with the width of molten metal contact-making surface.
4, the length of flame.The length of flame is between the 20mm to 100mm, can guarantee air-flow speed, flame diameter and prevent that heater self temperature is too high.
5, the radian of flame curtain.According to the length and the flame uniformity requirement of flame, the flame curtain can be prepared into the arc that is complementary with crystallization roller roll surface, and it is consistent with the radian of crystal roller surface that the radian of flame curtain keeps, so the radius of flame curtain negative camber is greater than crystal roller surface radius 50mm to 100mm.
6, the temperature of flame curtain.Real work requirement according to the crystallization roller, the maximum temperature of flame curtain is to open the temperature of molten metal when watering (about 1700 ℃), the temperature range of flame curtain is selected 800 ℃ to opening molten metal temperature when watering, and molten metal temperature when optimum range waters for opening (about 1700 ℃) is to this 300 ℃ of scope below temperature.
7, the heating power of flame curtain.Cooling power during crystallization roller smooth working section is the highest heating power of flame curtain.When more than 20% of cooling power when power bracket is chosen as crystallization roller smooth working section, optimum range are crystallization roller smooth working section 40% to 60% of power.
8, fuel ratio.According to different fuel and combustion-supporting gas, combustion-supporting gas will form the atmosphere that slightly is reproducibility a little less than stoicheiometry with the ratio of fuel, prevents that the flame curtain from forming oxidative damage to crystal roller surface.
9, miscellaneous function.When the crystallization roller normally open water after the flame curtain close rapidly, and switch to inert protective gas, the heating curtain wall forwards refrigerating function rapidly to by heating function, plays cooling and protects crystal roller surface.
Heating technique of the present invention has following feature:
1, the high and controllable joint of flame temperature.Flame mouth among the present invention in the flame curtain can obtain different flame temperatures with combustion-supporting gas and different ratios according to different fuel, and flame temperature can be selected between 500 ℃ to 1500 ℃ and control.
2, efficiency of heating surface height.Flame mouth number, density and the flame cap of flame curtain can require to adjust according to heating process among the present invention, and cooperate suitable flame temperature, thermal efficiency height.
3, widely applicable applicability is strong.The parameter of flame curtain can be adjusted according to different instructions for uses among the present invention.Continuous casting process requirement applicable to various different metals.
4, width of heating is unrestricted.The heater of the technology of the present invention can increase or reduce number and row's number of flame mouth as requested, so width of heating is unrestricted.
5, crystal roller surface is not formed damage.The present invention adopts the atmosphere of reproducibility to heat, and can not form oxidative damage to crystal roller surface.
6, switch is convenient.The present invention adopts combustion gas to heat, and heater switch is very convenient, and is simple to operate.
7, has multiple function.The present invention can switch to refrigerating function rapidly after heating, realize the double effects of heating and cooling.
Embodiment 1
Adopt hydrogen as combustion gas, oxygen is as combustion-supporting gas.The flow proportional of hydrogen and oxygen be chemical reaction than 1: 0.95, the pressure of hydrogen is 30PSI.The length of flame of resulting flame curtain wall is 30mm, and the temperature of flame is 1200 ℃; Be 50PSI when the pressure of hydrogen raises, the length of flame of resulting flame curtain wall is 50mm, and the temperature of flame is 1600 ℃.All flame intensities and the length of the formed flame curtain wall of heating technique of the present invention are close, and the temperature field is even.Heat effective.
Embodiment 2
Adopt natural gas as combustion gas, oxygen is as combustion-supporting gas.The flow proportional of natural gas and oxygen be chemical reaction than 1: 1, the pressure of natural gas is 45PSI.The length of flame of resulting flame curtain wall is 50mm, and the temperature of flame is 700 ℃; Be 50PSI when the pressure of hydrogen raises, the length of flame of resulting flame curtain wall is 80mm, and the temperature of flame is 1000 ℃.All flame intensities and the length of the formed flame curtain wall of heating technique of the present invention are close, but the length of flame is bigger than the length of oxyhydrogen flame.The temperature field of flame curtain wall is even, heats effective.
Embodiment 3
Employing ethanol acts as a fuel, and air is as combustion-supporting gas.The flow proportional of ethanol and air be chemical reaction than 1: 0.9, consider that ethanol is liquid fuel, adopted hydraulic pump as power source, the pressure of ethanol is 2.0kg/cm
2Flow with ethanol serves as that forming the chemical reaction ratio is 1: 0.9-1: 0.98 according to the compressed-air actuated flow of control.The length of flame of resulting flame curtain wall is 80mm, and the temperature of flame is 700 ℃; When raising, the pressure of ethanol is 3.0kg/cm
2, the length of flame of resulting flame curtain wall is 150mm, the temperature of flame is 1000 ℃.All flame intensities and the length of the formed flame curtain wall of heating technique of the present invention are close, but the length of flame is longer.The temperature field of flame curtain wall is even, heats effective.
Embodiment 4
Employing acetone acts as a fuel, and compressed air is as combustion-supporting gas.The flow proportional of acetone and air be chemical reaction than 1: 0.9, consider that acetone is liquid fuel, adopted hydraulic pump as power source, the pressure of acetone is 2.0kg/cm
2Flow with acetone serves as that forming the chemical reaction ratio is 1: 0.9-1: 1 according to the compressed-air actuated flow of control.The length of flame of resulting flame curtain wall is 60mm, and the temperature of flame is 800 ℃; When raising, the pressure of acetone is 2.5kg/cm
2, the length of flame of resulting flame curtain wall is 80mm, the temperature of flame is 1200 ℃.All flame intensities and the length of the formed flame curtain wall of heating technique of the present invention are close, and the length of flame is less, and acetone and the compressed air mixing ratio in nozzle is more abundant.The temperature field of flame curtain wall is even, heats effective.
Embodiment 5
Adopt acetylene as combustion gas, oxygen is as combustion-supporting gas.The flow proportional of acetylene and oxygen be chemical reaction than 1: 1, the pressure of acetylene is 45PSI.The length of flame of resulting flame curtain wall is 75mm, and the temperature of flame is 800 ℃; Be 50PSI when the pressure of hydrogen raises, the length of flame of resulting flame curtain wall is 120mm, and the temperature of flame is 1250 ℃.All flame intensities and the length of the formed flame curtain wall of heating technique of the present invention are close, but the length of flame is bigger than the length of oxyhydrogen flame.Flame easily forms black smoke when the amount of oxygen is lower than chemical reaction than 1: 0.85, and the amount of oxygen excessive (being higher than 1: 1.15) is the temperature superelevation of flame then, and the temperature field of flame curtain wall is even in the time of between 0.85-1.15, heats effective.
Claims (8)
1. thin band continuous casting crystallization roller heating means, it is characterized in that the crystallization roller is heated, actual hot input process when its heating technique can be simulated the smooth working section of thin strap continuous casting, when the duty of crystallization roller near or when reaching actual casting smooth working section, begin the casting of metal again, make the casting of metals process directly start from normal smooth working section.
2. thin band continuous casting crystallization roller heating means according to claim 1, it is characterized in that heating technique is an oxygen fuel flame curtain wall formula, combustion-supporting gas cuts mutually to form by nozzle ejection back separately with gas or liquid fuel and mixes, through the oxygen torch igniting of divergence expression, a plurality of oxygen torch flames are intertwined to form flame curtain wall heating thin band continuous casting crystallization roller.
3. thin band continuous casting crystallization roller heating means according to claim 1 and 2, the fuel and the combustion-supporting gas steam line that it is characterized in that beginning motlten metal to cast the back cuts off heating technique switch to refrigerating gas, realize the cooling to the crystallization roller.
4. thin band continuous casting crystallization roller heating means according to claim 2, it is characterized in that oxygen torch mouth can be formed by single mouth staggered pattern, short slit forms grid and forms, the formation that is arranged in parallel of long slit, also can form mesh plate and form, also can form by the jet orifice plate that a plurality of spray orifices form by fuel jet orifice.
5. thin band continuous casting crystallization roller heater, it is characterized in that adopting the heating of oxygen fuel flame curtain wall, it comprises curtain wall base plate, curtain wall substrate, oxygen torch mouth, igniter, two main gas tube roads, the curtain wall substrate is housed on the curtain wall base plate constitutes the thermal treatment zone, arranging a plurality of oxygen torch mouths on the curtain wall substrate, the interlaced arrangement of oxygen torch mouth is provided with igniter between the oxygen torch mouth of periphery, the thermal treatment zone; The curtain wall substrate is made up of two symmetrical upper and lower cavitys, cavity is made of upper and lower shrouding, intermediate plate, two side seal boards, intermediate plate one end top is bent into the top, other end top is bent into and presses down, make upper and lower cavity comprise a thick square opening pipe portion and a narrow flat part, thick square opening pipe portion communicates with narrow flat part and connection place becomes fillet; The logical main gas tube road of thick square opening pipe portion, upper cavity leads to fuel, and lower chamber leads to combustion-supporting gas; Intermediate plate has air guide awl and oxygen jet near lower chamber one side, has screw near upper cavity one side, and screw communicates with oxygen jet, and the mixing tube of spinning oxygen torch mouth on the screw, and the number of the oxygen torch mouth of installing on the number of screw and the substrate is consistent; There is convex shoulder the mixing tube outside and has external screw thread, the mixing tube bottom is screwed on the intermediate plate screw, the oxygen torch cap internal thread that the upper sealing plate duct is rotatably connected in oxygen torch mouth is passed on top, having nozzle on the convex shoulder enters in the mixing tube fuel in the upper cavity, convex shoulder compresses through oxygen torch cap intermediate plate and upper sealing plate is sealed, and oxygen torch crown portion has spray orifice.
6. thin band continuous casting crystallization roller heater according to claim 5, the spray orifice that it is characterized in that oxygen torch crown portion is a center of orifices, other spray orifice that around center of orifices, evenly distributes, other spray orifice and center of orifices are certain angle.
7. thin band continuous casting crystallization roller heater according to claim 5; it is characterized in that two main gas tube roads are equipped with two branch roads respectively; two branch roads on a main gas tube road connect fuel and inertia protection refrigerating gas respectively; two branch roads on another main gas tube road connect combustion-supporting gas and inertia protection refrigerating gas respectively, and each branch road all is equipped with reverse gas stop valve.
8. thin band continuous casting crystallization roller heater according to claim 7 is characterized in that in fuel and the combustion-supporting gas branch road flow sensor being housed also, in the both sides on main gas tube road pressure sensor is housed.
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| CNB2005100302055A CN100518998C (en) | 2005-09-29 | 2005-09-29 | Method and apparatus for heating thin-band continuous-casting crystallized roller |
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| CNB2005100302055A CN100518998C (en) | 2005-09-29 | 2005-09-29 | Method and apparatus for heating thin-band continuous-casting crystallized roller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323001A (en) * | 2017-08-25 | 2017-11-07 | 上海大松瓦楞辊有限公司 | A kind of stupefied type corrugated roller heating structure of fourth bone |
| CN107695323A (en) * | 2017-09-14 | 2018-02-16 | 云南云铝涌鑫铝业有限公司 | Mould preheating device and die assembly |
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| US3944444A (en) * | 1971-05-20 | 1976-03-16 | A. Finkl & Sons Company | Method for heat treating cylindrical products |
| DE102004006091B4 (en) * | 2004-02-07 | 2006-01-05 | Schott Ag | Gas-fired heating device |
| AR084290A1 (en) * | 2010-12-15 | 2013-05-08 | Theravance Inc | NEPRILISIN INHIBITORS, METHODS FOR THEIR PREPARATION AND INTERMEDIARIES USED THEREOF, PHARMACEUTICAL COMPOSITIONS THAT INCLUDE THEM AND THEIR USE IN THE MANUFACTURE OF MEDICINES TO TREAT DISEASES MEDIATED BY THE NEP INHIBITION |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107323001A (en) * | 2017-08-25 | 2017-11-07 | 上海大松瓦楞辊有限公司 | A kind of stupefied type corrugated roller heating structure of fourth bone |
| CN107695323A (en) * | 2017-09-14 | 2018-02-16 | 云南云铝涌鑫铝业有限公司 | Mould preheating device and die assembly |
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| CN100518998C (en) | 2009-07-29 |
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