CN1301815C - Electromagnetic continuous casting method of composite roller and its casting equipment - Google Patents
Electromagnetic continuous casting method of composite roller and its casting equipment Download PDFInfo
- Publication number
- CN1301815C CN1301815C CNB2005100465550A CN200510046555A CN1301815C CN 1301815 C CN1301815 C CN 1301815C CN B2005100465550 A CNB2005100465550 A CN B2005100465550A CN 200510046555 A CN200510046555 A CN 200510046555A CN 1301815 C CN1301815 C CN 1301815C
- Authority
- CN
- China
- Prior art keywords
- crystallizer
- roller core
- roller
- electromagnetic
- electromagnetism water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Continuous Casting (AREA)
Abstract
The present invention relates to an electromagnetic continuous casting method of a composite roller and a casting device. The casting device is mainly characterized in that a double-electromagnetic water cooling crystallizer is adopted; the double-electromagnetic water cooling crystallizer comprises a sensing heat replenishment device, an electromagnetic stirrer, a sensing preheating furnace, and a crystallizer oscillation system, wherein the sensing heat replenishment device is positioned at the upper end of the crystallizer, the electromagnetic stirrer is positioned at the middle lower part of the crystallizer, and protective gas is charged by the sensing preheating furnace. The casting method comprises the following steps: a roller core is preformed; the roller core which is positioned is preheated in the sensing preheating furnace to a proper temperature; the roller core is pulled to the lower end of the double-electromagnetic water cooling crystallizer; a filling bath is positioned; the sensing heat replenishment device is started; working layer molten metal of a roller, which is molten, is filled into the double-electromagnetic water cooling crystallizer through the filling bath; a secondary cooling system, the crystallizer oscillation system, the electromagnetic stirrer and a throwing machine are orderly started; roller blanks are continuously pulled out of the crystallizer; after the roller blanks are out of the crystallizer, water is sprayed on the roller blanks, and the roller blanks are cooled. The bimetal composite roller manufactured by the present invention has the advantages of compact structure of a working layer, small crystal particles, homogeneous constituents, no aliquation, good red hardness and good wear resistance.
Description
Technical field
The present invention relates to the continuous casting technical field of bimetallic interface high temperature complex technique and bimetal part, particularly the continuous casing of composition metal roll and Casting Equipment.
Background technology
Roll plays crucial effects in steel rolling is produced, wearing and tearing simultaneously, consumption are also very big.The conventional manufacture method of roll mainly contains methods such as monoblock cast, overflow casting, centrifugal casting and forging.What the monoblock cast method obtained is the single component roll, and it is difficult to satisfy the core that makes roll both have high tenacity, has the requirement of high-wearing feature working lining again.For this reason, occurred casting or the composite roll of centrifugal casting, but because the composite roll roller core that adopts these methods to produce is an as-cast structure, thereby the intensity of roller core and toughness are all relatively poor with overflow.Along with the appearance of first feed mill and efficient rolling technique, also promoted the roll manufacturing industry new technical field of marching toward when having promoted the steel rolling industrial development.Occur some new roll manufacturing technologies subsequently, mainly contained methods such as continuous casting composite algorithm, electroslag remelting welding method, hot isostatic pressing method, spray up moulding and liquid metal electroslag composite algorithm.It is the most rising wherein to cast composite algorithm continuously, its working lining metal is low-alloy steel, semi-high speed steel or high-speed steel etc., wherein common with high-speed steel, to compare with traditional roll, composite roll has good wearability, red hardness, higher hardness and longer service life.Its application can be improved the quality of products and operating rate of rolling mill greatly, also has original advantage aspect the labor strength reducing the roll change number of times and alleviate.Yet, China also is in the starting stage to this Study on Technology, key factor is that a compound interface is arranged between composite roll roller core and operate outside layer, play a part in the quality of the fine or not breaker roll of compound interface quality and service life extremely crucial, desirable state is compound interface when reaching complete metallurgical binding, and its thickness is the smaller the better.Because adopt two kinds of materials in producing, its character differs greatly usually, and in process of production, it is solid-state that roll working lining metal is that liquid state and the roller core material of core are in, and this has just brought very big difficulty to the preparation of composite roll.But, development along with continuous casting steel machine technology and Electro-Magnetic Metallurgy technology, particularly electromagnetic induction heating and electromagnetic agitating technology in continuous casting steel machine is produced application, development and constantly perfect, for the manufacturing of composite roll provides a new thinking, however the development of this technology and improve the positive effort that also needs numerous scientific workers.
In existing technology, whether the preparation of composite roll by prefabricated roller core, is divided into following two kinds of methods:
1. prefabricated roller core
At first adopt forging or rolling method to prepare the roller core of intensity height, good toughness, then roller core outside compound certain thickness material height, hardness height, anti-wear performance is good, red hardness is good, the working layer of long service life, and is wherein common with high carbon high-speed steel.Usual way is to adopt hot isostatic pressing method or electroslag remelting process (CN1102469C, CN1152486A), but these method ubiquities shortcomings such as cost height, complex process, production efficiency are low, are not suitable for large-scale production application.In the early 1990s in last century, Japan adopts CPC (Continuous pouring process for cladding) method to produce compound high speed steel roll, Beijing Iron and Steel Research Geueral Inst has also carried out exploratory research to this kind method in China, has obtained certain achievement (CN1102469C, CN1078112C).The method that they adopted all is that the high carbon high-speed steel water with fusion is poured between the steel core and water-cooled crystallizing mould of vertical means, the outer molten steel and the steel core of fusion are merged, by drawing mechanism roll is pulled down then, by crystallizer the time, constantly solidify, constantly pull out downwards then, thereby form composite roll with high carbon high-speed steel skin, forged steel or steel rolling core.But these methods have all adopted in casting process and have been funnelform tundish, so that temperature-compensating is being provided for casting process and is providing the feeding molten metal at process of setting, big, the each cast of this equipment volume consumes also complexity of a large amount of refractory materials, technology.In the warm of roller core, roller core is directly exposed in the air simultaneously, although scribble the waterglass layer, because preheat temperature is very high, inevitably wants oxidation, has influenced the bond quality of composite bed to a great extent, and waterglass also pollutes molten steel simultaneously; Do not adopt secondary cooling system in addition, its casting speed is very slow, productivity ratio is extremely low, and advanced electromagnetic agitation cast steel technology is not applied yet.
2. not prefabricated roller core
Mainly be to adopt centrifugal casting method; at first pour into a mould the working lining of roll outside; molten steel has watered the back and has added the protectiveness agent at the inner surface of working lining; after the working lining molten metal solidifies a period of time; adopt static state or centrifugation method casting roller core again, solidify the back and form composite roll (CN1439472A, CN1070600A, CN1077401A).These method technologies are fairly simple, has certain operability, but a transition region is arranged between roller core and the operate outside layer in these casting methods, be referred to as compound interface, its thickness directly influences bond quality, thickness is excessive or too smallly all can cause compound failure, and its thickness is difficult to control in Foundry Production.
Summary of the invention
At above-mentioned the deficiencies in the prior art, the electromagnetic continuous casting method and the Casting Equipment of the composite roll of the invention provides that a kind of casting method and Casting Equipment are simple, casting speed is fast, production efficiency is high, the working lining of gained roll and core performance are all good.
Composite roll electromagnetic continuous casting method of the present invention is as follows:
1, according to the requirement of pair roller core matter and size in the production application, the mode of employing machining is removed the oxide layer of roller core outside, the processing locating hole, and carry out pickling etc., the roller core of prefabricated composite roll;
2, prefabricated roller core is placed on the central shaft of two electromagnetism water molds, and position by location dummy bar head and roller core locating rack;
3, open the cooling water valve of two electromagnetism water molds, to locate dummy bar head then and rise to the bottom of responding to preheating furnace, the power supply of connecting the induction preheating furnace carries out preheating to roller core, in warm, charge into annulus feeding protective gas by the protective gas that is installed in the induction preheating furnace, make prefabricated roller core not oxidized, responding to the power of preheating furnace and length and casting speed simultaneously is complementary, make roller core in the process that moves down by continuously pre-heating, just be preheating to suitable temperature when arriving the upper edge of two electromagnetism water molds, what preheat temperature was looked the roller core material is not all 1100～1400 ℃;
4, in the upper edge of two electromagnetism water molds, place flow-injection groove, start the induction afterburner in two electromagnetism water molds then.The induction afterburner adopts the intermediate frequency concurrent heating, and in the continuous pouring process, it not only provides the heat radiation compensation for molten metal, and it is compound to be beneficial to bimetallic, and the feeding molten metal can effectively be provided, and improves roll working lining density, can improve roller surface quality simultaneously;
5, good roll working lining molten metal will be smelted, be poured in two electromagnetism water molds by flow-injection groove, pouring temperature is 1420～1500 ℃, start secondary cooling system subsequently successively, crystallizer vibrating system, magnetic stirrer and Blank drawing machine, wherein the mode of vibration of mould vibration device adopts the sinusoid vibration, vibration frequency is 1.6～2.5Hz, amplitude 2～6mm, the outside that magnetic stirrer both can be placed on two electromagnetism water molds also can be built in the cooling water of two electromagnetism water molds, adopt 4～15Hz low-frequency power, in casting process, apply low frequency and stir electromagnetic field, magnetic induction intensity is 0.02～0.08T, impel molten metal to flow, evenly the molten metal temperature field helps inclusion floating, crystal grain thinning is eliminated defectives such as segregation and internal shrinkage, the casting speed of Blank drawing machine is 0.2～0.4m/min, to guarantee the recombination time and the composite quality of composite surface;
6, adopt the mode of continuous pouring, pull down action roller core and location dummy bar head synchronously, when immersing the molten metal liquid level to the roller core upper end, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers in the time of throwing is cooled off to the roller stock water spray by secondary cooling system.
Composite roll electromagnetic continuous-casting equipment and workpiece to be processed that the present invention adopts comprise: roller core locating rack, roller core (metal 1), induction preheating furnace, flow-injection groove, operating platform, induction afterburner, roll working lining molten metal (metal 2), two electromagnetism water molds, crystallizer vibrating system, magnetic stirrer, location dummy bar head, secondary cooling system, Blank drawing machine; Wherein roller core (metal 1) and roll working lining molten metal (metal 2) are workpiece to be processed.The roller core locating rack is arranged at its upper side; its below is the induction preheating furnace; the power of induction preheating furnace and length and casting speed are complementary; in the induction preheating furnace, protective gas has been installed and has been charged into annulus; can feed inert gas protects roller core; roller core locating rack and induction preheating furnace can move by easy on and off; convenient location; the below setting operation platform of induction preheating furnace; two electromagnetism water molds are positioned at the below of operating platform; it comprises induction afterburner and magnetic stirrer; the induction afterburner is arranged near the liquid level of working lining molten metal of two electromagnetism water molds; magnetic stirrer is positioned at the middle and lower part of two electromagnetism water molds; the outside that it both can be placed on two electromagnetism water molds also can be built in the cooling water of two electromagnetism water molds; two electromagnetism water molds below is provided with crystallizer vibrating system; secondary cooling system is positioned at the exit of two electromagnetism water molds; the location dummy bar head begins to be positioned at the bottom of two electromagnetism water molds; and connect mutually with the Blank drawing machine that is positioned at ground, flow-injection groove is placed in the upper edge of two electromagnetism water molds.
The present invention has following beneficial effect:
1, in the induction preheating furnace protective gas is installed and charges into annulus, and thermal treatment zone length and heating power and casting speed are complementary, when being moved, roller core finishes warm in the induction preheating furnace, owing to being connected with inert gas roller core is protected simultaneously, thereby made its oxidation in warm minimum;
2, in casting process without tundish, but directly molten metal is injected in two electromagnetism water molds by flow-injection groove, flow-injection groove is provided with slag trap;
3, two electromagnetic crystallizers have been adopted, the induction afterburner is installed on its top, make the temperature of molten metal and roller core when cast, remain on optimum temperature, not only provide thermal compensation for molten metal, it is compound to be beneficial to bimetallic, and the feeding molten metal can effectively be provided, and improve roll working lining density, improve roller surface quality simultaneously; Magnetic stirrer is installed in its underpart, adds low frequency and stir electromagnetic field in casting process, impels molten metal to flow, crystal grain thinning promotes inclusion floating etc., makes molten metal temperature field homogenising simultaneously, the feeding molten metal further is provided, eliminates segregation and internal shrinkage, improve the density of roll etc.;
4, adopting frequency is that 1.6～2.5Hz, amplitude are that the sine wave of 2～6mm vibrates crystallizer, helps the demoulding and improves pulling rate;
5, the employing of secondary cooling system can be cooled off the roller stock that leaves crystallizer, improves pulling rate and avoids the roller stock distortion.
Description of drawings
Accompanying drawing is a composite roll Casting Equipment schematic diagram, comprises among the figure: 1 roller core locating rack, 2 roller cores (metal 1), 3 induction preheating furnaces, 4 flow-injection grooves, 5 operating platforms, 6 induction afterburners, 7 roll working lining molten metals (metal 2), 8 pairs of electromagnetism water molds, 9 crystallizer vibrating systems, 10 magnetic stirrers, 11 location dummy bar heads, 12 secondary cooling systems, 13 Blank drawing machines, wherein roller core 2 and roll working lining molten metal 7 are workpiece to be processed.
The specific embodiment
Embodiment 1
Composite roll electromagnetic continuous-casting equipment and workpiece to be processed comprise: roller core locating rack 1, roller core 2 (adopting 45# carbon constructional quality steel bar), induction preheating furnace 3, flow-injection groove 4, operating platform 5, induction afterburner 6, (its chemical composition is by mass percentage: C 1.1% for roll working lining molten metal 7, Cr 5.0%, and W 7.0%, and Mo 4.3%, V 3.8%, all the other are Fe), two electromagnetism water molds 8, crystallizer vibrating system 9, magnetic stirrer 10, location dummy bar head 11, secondary cooling system 12, Blank drawing machine 13.Roller core locating rack 1 and induction preheating furnace 3 can move, conveniently locate by easy on and off; In induction preheating furnace 3 protective gas has been installed and has been charged into annulus, the power of induction preheating furnace 3 and length and casting speed are complementary, and make roller core 2 just can be preheating to preference temperature when moving continuously; Flow-injection groove 4 is placed in the upper edge of two electromagnetism water molds 8, is provided with slag trap; Equipment has adopted two electromagnetism water molds 8, it comprises induction afterburner 6 and magnetic stirrer 10, two electromagnetism water molds 8 are in the water mold periphery, are positioned at induction afterburner 6 is set near the crystallizer working lining metal bath surface, and magnetic stirrer 10 is set below the crystallizer horizontal center line; Two electromagnetism water molds below is provided with crystallizer vibrating system 9, and secondary cooling system 12 is positioned at the exit of two electromagnetism water molds, and location dummy bar head 11 begins to be positioned at the bottom of two electromagnetism water molds 8, and connects mutually with the Blank drawing machine 13 that is positioned at ground.
Embodiment 2
1, according in the production application to the requirement of roller core 2 materials and size, adopt the mode of machining to remove the oxide layer of roller core 2 outsides, processing locating hole, and carry out pickling etc., the roller core 2 of prefabricated composite roll;
2, prefabricated roller core 2 is placed on the central shaft of two electromagnetism water molds 8, and position by location dummy bar head 11 and roller core locating rack 1;
3, open the cooling water valve of two electromagnetism water molds 8, to locate dummy bar head 11 then and rise to the bottom of responding to preheating furnace 3, connect the power supply of induction preheating furnace 3, in warm, feed the inertia protective gas, roller core 2 in the process that moves down by continuously pre-heating, just be preheating to preheat temperature when arriving two electromagnetism water mold 8, preheat temperature is 1400 ℃;
4, in the upper edge of two electromagnetism water molds 8, place flow-injection groove 4, start the induction afterburner 6 in two electromagnetism water molds 8 then, induction afterburner 6 adopts intermediate frequency power supply;
5, will smelt good roll working lining molten metal 7, be poured in two electromagnetism water molds 8 by flow-injection groove 4, pouring temperature is 1420 ℃, start secondary cooling system 12, crystallizer vibrating system 9, magnetic stirrer 10 and Blank drawing machine 13 subsequently successively, wherein the mode of vibration of mould vibration device 9 adopts the sinusoid vibration, vibration frequency is 1.6Hz, amplitude 2mm, magnetic stirrer 10 adopts the 4Hz low-frequency power, in casting process, apply low frequency and stir electromagnetic field, magnetic induction intensity is 0.02T, and the casting speed of Blank drawing machine 13 is 0.2m/min;
6, adopt the mode of continuous pouring, pull down action roller core 2 and location dummy bar head 11 synchronously, during to roller core 2 upper end immersed in liquid level, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers 8 in the time of throwing is cooled off to the roller stock water spray by secondary cooling system 12.
The chemical composition of working lining metal is by mass percentage in the present embodiment: C 1.0%, and Cr 4.3%, and W 5.1%, and Mo 2.1%, and V 2.1%, and all the other are Fe, and core material adopts 45# carbon constructional quality steel bar.
Assay find roll component evenly, segregation-free, dense structure, crystal grain are tiny, do not have loose and shrinkage cavity, bimetallic is good in conjunction with the interface, has reached metallurgical binding fully.
Embodiment 3
1, according in the production application to the requirement of roller core 2 materials and size, adopt the mode of machining to remove the oxide layer of roller core 2 outsides, processing locating hole, and carry out pickling etc., the roller core 2 of prefabricated composite roll;
2, prefabricated roller core 2 is placed on the central shaft of two electromagnetism water molds 8, and position by location dummy bar head 11 and roller core locating rack 1;
3, open the cooling water valve of two electromagnetism water molds 8, to locate dummy bar head 11 then and rise to the bottom of responding to preheating furnace 3, connect the power supply of induction preheating furnace 3, in warm, feed protective gas, roller core 2 in the process that moves down by continuously pre-heating, just be preheating to suitable temperature when arriving two electromagnetism water mold 8, preheat temperature is 1100 ℃;
4, in the upper edge of two electromagnetism water molds 8, place flow-injection groove 4, start the induction afterburner 6 in two electromagnetism water molds 8 then, induction afterburner 6 adopts the intermediate frequency concurrent heating;
5, will smelt good roll working lining molten metal 7, be poured in two electromagnetism water molds 8 by flow-injection groove 4, pouring temperature is 1460 ℃, start secondary cooling system 12, crystallizer vibrating system 9, magnetic stirrer 10 and Blank drawing machine 13 subsequently successively, wherein the mode of vibration of mould vibration device 9 adopts the sinusoid vibration, vibration frequency is 2.0Hz, amplitude 4mm, magnetic stirrer 10 adopts the 9Hz low-frequency power, in casting process, apply low frequency and stir electromagnetic field, magnetic induction intensity is 0.06T, and the casting speed of Blank drawing machine 13 is 0.3m/min;
6, adopt the mode of continuous pouring, pull down action roller core 2 and location dummy bar head 11 synchronously, during to roller core 2 upper end immersed in liquid level, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers 8 in the time of throwing is cooled off to the roller stock water spray by secondary cooling system 12.
The chemical composition of working lining metal is by mass percentage in the present embodiment: C 1.5%, and Cr 6.8%, and W 10.2%, Mo6.2%, and V 8.6%, and all the other are Fe, and core material adopts 45# carbon constructional quality steel bar.
Assay find roll component evenly, segregation-free, dense structure, crystal grain are tiny, do not have loose and shrinkage cavity, bimetallic is good in conjunction with the interface, has reached metallurgical binding fully.
Embodiment 4
1, according in the production application to the requirement of roller core 2 materials and size, adopt the mode of machining to remove the oxide layer of roller core 2 outsides, processing locating hole, and carry out pickling etc., the roller core 2 of prefabricated composite roll;
2, prefabricated roller core 2 is placed on the central shaft of two electromagnetism water molds 8, and position by location dummy bar head 11 and roller core locating rack 1;
3, open the cooling water valve of two electromagnetism water molds 8, to locate dummy bar head 11 then and rise to the bottom of responding to preheating furnace 3, connect the power supply of induction preheating furnace 3, in warm, feed protective gas, roller core 2 in the process that moves down by continuously pre-heating, just be preheating to suitable temperature when arriving two electromagnetism water mold 8, preheat temperature is 1200 ℃;
4, in the upper edge of two electromagnetism water molds 8, place flow-injection groove 4, start the induction afterburner 6 in two electromagnetism water molds 8 then, induction afterburner 6 adopts the intermediate frequency concurrent heating;
5, will smelt good roll working lining molten metal 7, be poured in two electromagnetism water molds 8 by flow-injection groove 4, pouring temperature is 1500 ℃, start secondary cooling system 12, crystallizer vibrating system 9, magnetic stirrer 10 and Blank drawing machine 13 subsequently successively, wherein the mode of vibration of mould vibration device 9 adopts the sinusoid vibration, vibration frequency is 2.5Hz, amplitude 6mm, magnetic stirrer 10 adopts the 15Hz low-frequency power, in casting process, apply low frequency and stir electromagnetic field, magnetic induction intensity is 0.08T, and the casting speed of Blank drawing machine 13 is 0.4m/min;
6, adopt the mode of continuous pouring, pull down action roller core 2 and location dummy bar head 11 synchronously, during to roller core 2 upper end immersed in liquid level, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers 8 in the time of throwing is cooled off to the roller stock water spray by secondary cooling system 12.
The chemical composition of working lining metal is by mass percentage in the present embodiment: C 1.3%, and Cr 5.5%, and W 7.0%, and Mo 4.0%, and V 6.2%, and all the other are Fe, and core material adopts 45# carbon constructional quality steel bar.
Assay find roll component evenly, segregation-free, dense structure, crystal grain are tiny, do not have loose and shrinkage cavity, bimetallic is good in conjunction with the interface, has reached metallurgical binding fully.
Embodiment 5
1, according in the production application to the requirement of roller core 2 materials and size, adopt the mode of machining to remove the oxide layer of roller core 2 outsides, processing locating hole, and carry out pickling etc., the roller core 2 of prefabricated composite roll;
2, prefabricated roller core 2 is placed on the central shaft of two electromagnetism water molds 8, and position by location dummy bar head 11 and roller core locating rack 1;
3, open the cooling water valve of two electromagnetism water molds 8, to locate dummy bar head 11 then and rise to the bottom of responding to preheating furnace 3, connect the power supply of induction preheating furnace 3, in warm, feed protective gas, roller core 2 in the process that moves down by continuously pre-heating, just be preheating to suitable temperature when arriving two electromagnetism water mold 8, preheat temperature is 1300 ℃;
4, in the upper edge of two electromagnetism water molds 8, place flow-injection groove 4, start the induction afterburner 6 in two electromagnetism water molds 8 then, induction afterburner 6 adopts the intermediate frequency concurrent heating;
5, will smelt good roll working lining molten metal 7, be poured in two electromagnetism water molds 8 by flow-injection groove 4, pouring temperature is 1450 ℃, start secondary cooling system 12, crystallizer vibrating system 9, magnetic stirrer 10 and Blank drawing machine 13 subsequently successively, wherein the mode of vibration of mould vibration device 9 adopts the sinusoid vibration, vibration frequency is 2.5Hz, amplitude 5mm, magnetic stirrer 10 adopts the 4Hz low-frequency power, in casting process, apply low frequency and stir electromagnetic field, magnetic induction intensity is 0.05T, and the casting speed of Blank drawing machine 13 is 0.4m/min;
6, adopt the mode of continuous pouring, pull down action roller core 2 and location dummy bar head 11 synchronously, during to roller core 2 upper end immersed in liquid level, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers 8 in the time of throwing is cooled off to the roller stock water spray by secondary cooling system 12.
The chemical composition of working lining metal is by mass percentage in the present embodiment: C 1.2%, Cr6.5%, and W7.8%, Mo 5.5%, and V 7.3%, and all the other are Fe, and core material adopts 45# carbon constructional quality steel bar.
Assay find roll component evenly, segregation-free, dense structure, crystal grain are tiny, do not have loose and shrinkage cavity, bimetallic is good in conjunction with the interface, has reached metallurgical binding fully.
Claims (8)
1, a kind of electromagnetic continuous casting method of composite roll is characterized in that this method adopts following processing step:
1. adopt the mode of machining to remove the outside oxide layer of roller core (2), the processing locating hole, and carry out pickling, the roller core of prefabricated composite roll (2);
2. prefabricated roller core (2) is placed on the central shaft of two electromagnetism water molds (8), and position by location dummy bar head (11) and roller core locating rack (1);
3. open the cooling water valve of two electromagnetism water molds (8), to locate dummy bar head (11) then and rise to the bottom of responding to preheating furnace (3), connect the power supply of induction preheating furnace (3), in warm, feed the inertia protective gas, roller core (2) in the process that moves down by continuously pre-heating, just be preheating to preheat temperature when arriving the upper edge of two electromagnetism water molds (8), preheat temperature is 1100～1400 ℃;
4. in the upper edge of two electromagnetism water molds (8), place flow-injection groove (4), start the induction afterburner (6) in two electromagnetism water molds (8) then;
5. will smelt good roll working lining molten metal (7), be poured in two electromagnetism water molds (8) by flow-injection groove (4), pouring temperature is 1420～1500 ℃, starts secondary cooling system (12), crystallizer vibrating system (9), magnetic stirrer (10) and Blank drawing machine (13) subsequently successively;
6. adopt the mode of continuous pouring, pull down action roller core (2) and location dummy bar head (11) synchronously, when immersing molten metal (7) liquid level to roller core (2) upper end, stop cast and continue downward throwing, till all pulling out, the outlet at two electromagnetic crystallizers (8) in the time of throwing is cooled off to the roller stock water spray by secondary cooling system (12).
2, according to the electromagnetic continuous casting method of the described composite roll of claim 1, it is characterized in that the mode of vibration of mould vibration device (9) adopts the sinusoid vibration, vibration frequency is 1.6～2.5Hz, amplitude 2～6mm.
3, according to the electromagnetic continuous casting method of the described composite roll of claim 1, it is characterized in that the outside that magnetic stirrer (10) both can be placed on two electromagnetism water molds (8) also can be built in the cooling water of two electromagnetism water molds (8), adopt 4～15Hz low-frequency power, apply low frequency and stir electromagnetic field in casting process, magnetic induction intensity is 0.02～0.08T.
4, according to the electromagnetic continuous casting method of the described composite roll of claim 1, the casting speed that it is characterized in that Blank drawing machine (13) is 0.2～0.4m/min.
5,, it is characterized in that responding to afterburner (6) and adopt 2000～2500Hz power supply according to the electromagnetic continuous casting method of the described composite roll of claim 1.
6; the Casting Equipment that the described composite roll electromagnetic continuous casting method of claim 1 adopts; comprise: roller core locating rack (1); induction preheating furnace (3); flow-injection groove (4); operating platform (5); two electromagnetism water molds (8); crystallizer vibrating system (9); location dummy bar head (11); secondary cooling system (12); Blank drawing machine (13); the water mold (8) that it is characterized in that this Casting Equipment is two electromagnetism water molds; in the induction preheating furnace (3) protective gas has been installed and has been charged into annulus; the lower end of crystallizer is provided with crystallizer vibrating system (9), and described pair of electromagnetism water mold (8) is in the water mold periphery; near being positioned at crystallizer working lining metal bath surface induction afterburner (6) is set, magnetic stirrer (10) is set in the crystallizer middle and lower part; the heated length of induction preheating furnace (3) and heating power and casting speed are complementary, and make roller core (2) finish warm in the operation in induction preheating furnace (3).
7, the Casting Equipment that adopts according to the described composite roll electromagnetic continuous casting method of claim 6, the induction afterburner (6) that it is characterized in that described pair of electromagnetism water mold (8) adopts 2000～2500Hz power supply, and the magnetic induction intensity of magnetic stirrer (10) is 0.02～0.08T.
8, the Casting Equipment that adopts according to the described composite roll electromagnetic continuous casting method of claim 6 is characterized in that flow-injection groove (4) is provided with slag trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100465550A CN1301815C (en) | 2005-06-01 | 2005-06-01 | Electromagnetic continuous casting method of composite roller and its casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100465550A CN1301815C (en) | 2005-06-01 | 2005-06-01 | Electromagnetic continuous casting method of composite roller and its casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1718322A CN1718322A (en) | 2006-01-11 |
| CN1301815C true CN1301815C (en) | 2007-02-28 |
Family
ID=35930342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100465550A Expired - Fee Related CN1301815C (en) | 2005-06-01 | 2005-06-01 | Electromagnetic continuous casting method of composite roller and its casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1301815C (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019391B (en) * | 2009-09-09 | 2013-03-27 | 沈阳东方钢铁有限公司 | Steel pipe continuous casting equipment |
| CN108356248B (en) * | 2018-02-28 | 2021-03-23 | 江苏大学 | Electromagnetic stirring vibration composite casting method for boron-containing high-speed steel roller sleeve |
| CN108393465B (en) * | 2018-02-28 | 2021-05-25 | 江苏大学 | Roll sleeve extrusion vibration casting device and roll sleeve production device |
| CN108421965A (en) * | 2018-02-28 | 2018-08-21 | 江苏大学 | A kind of roll sleeve extrusion and vibration method for casting production |
| CN109482831A (en) * | 2018-11-29 | 2019-03-19 | 鞍钢重型机械有限责任公司 | A kind of equipment and method of solid-liquid metallic composite continuously casting |
| CN109332656B (en) * | 2018-12-10 | 2020-11-06 | 东北大学 | Continuous casting high-speed steel composite roller prefabricated roller core heating device and using method thereof |
| CN111347029A (en) * | 2020-03-30 | 2020-06-30 | 湖北金盛兰冶金科技有限公司 | Process for influencing service life and strength of roller by using trace elements |
| CN112008063B (en) * | 2020-08-11 | 2022-02-22 | 湖南三泰新材料股份有限公司 | Preparation method and preparation device of composite blank |
| CN112276025B (en) * | 2020-10-28 | 2022-03-08 | 安徽工业大学 | Device and method for inhibiting vortex formation at ladle nozzle by adding electromagnetic field |
| CN113996770B (en) * | 2021-11-11 | 2023-06-09 | 太原科技大学 | Rolling forming equipment and method for carbon fiber reinforced metal plate |
| CN114951575B (en) * | 2022-05-05 | 2023-05-02 | 河北工程大学 | Cold heading steel continuous casting device and continuous casting process thereof |
| CN115608991A (en) * | 2022-12-14 | 2023-01-17 | 太原理工大学 | Large-scale double-metal shell ring flexible composite equipment and method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD265818A1 (en) * | 1987-11-09 | 1989-03-15 | Thaelmann Schwermaschbau Veb | METHOD AND DEVICE FOR FORMING COMPOSITE CASTORS |
| DE4106420A1 (en) * | 1990-02-28 | 1991-08-29 | Hitachi Metals Ltd | Wear-resistant composite roll having steel core - has iron alloy concast cover with min. non-grain graphite and high granular graphite at surface to improve resistance to surface roughening |
| CN1076393A (en) * | 1992-12-22 | 1993-09-22 | 济南钢铁总厂 | A kind of manufacture method of steel-cored cast-iron compound roll |
| JPH11285710A (en) * | 1998-04-06 | 1999-10-19 | Nippon Steel Corp | Composite work roll for cold rolling and its manufacture |
| CN1253052A (en) * | 1998-11-03 | 2000-05-17 | 东北大学 | Final casting-rolling method for forming steel-in-copper bimetal material |
| CN1280042A (en) * | 2000-08-11 | 2001-01-17 | 钢铁研究总院 | Continuous casting equipment and method for composite roller |
| CN2505206Y (en) * | 2001-09-29 | 2002-08-14 | 武汉钢铁(集团)公司 | Roll core-filling pouring device |
| CN1390663A (en) * | 2002-06-14 | 2003-01-15 | 韩国强 | Equipment and method for casting bimetal roller |
| CN1559726A (en) * | 2004-02-19 | 2005-01-05 | 清华大学 | Method of electromagnet continuoces casting of high spped steel composite roller |
-
2005
- 2005-06-01 CN CNB2005100465550A patent/CN1301815C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD265818A1 (en) * | 1987-11-09 | 1989-03-15 | Thaelmann Schwermaschbau Veb | METHOD AND DEVICE FOR FORMING COMPOSITE CASTORS |
| DE4106420A1 (en) * | 1990-02-28 | 1991-08-29 | Hitachi Metals Ltd | Wear-resistant composite roll having steel core - has iron alloy concast cover with min. non-grain graphite and high granular graphite at surface to improve resistance to surface roughening |
| CN1076393A (en) * | 1992-12-22 | 1993-09-22 | 济南钢铁总厂 | A kind of manufacture method of steel-cored cast-iron compound roll |
| JPH11285710A (en) * | 1998-04-06 | 1999-10-19 | Nippon Steel Corp | Composite work roll for cold rolling and its manufacture |
| CN1253052A (en) * | 1998-11-03 | 2000-05-17 | 东北大学 | Final casting-rolling method for forming steel-in-copper bimetal material |
| CN1280042A (en) * | 2000-08-11 | 2001-01-17 | 钢铁研究总院 | Continuous casting equipment and method for composite roller |
| CN2505206Y (en) * | 2001-09-29 | 2002-08-14 | 武汉钢铁(集团)公司 | Roll core-filling pouring device |
| CN1390663A (en) * | 2002-06-14 | 2003-01-15 | 韩国强 | Equipment and method for casting bimetal roller |
| CN1559726A (en) * | 2004-02-19 | 2005-01-05 | 清华大学 | Method of electromagnet continuoces casting of high spped steel composite roller |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1718322A (en) | 2006-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1301815C (en) | Electromagnetic continuous casting method of composite roller and its casting equipment | |
| CN101722288B (en) | Method for preparing local particle reinforced aluminum alloy cylinder sleeve by semi-solid casting technology | |
| CN1265914C (en) | Integral easting method of cast steel supporting roller | |
| CN1060695C (en) | Continuous and semicontinuous method preparing gradient material | |
| CN105522126B (en) | The compound roll shaft manufacturing process of high-performance and equipment | |
| CN102310174B (en) | Method and device for improving metal solidification defects and refining solidification textures | |
| CN101041165A (en) | Low-aliquation high-speed steel roll and the preparing method | |
| CN101823139B (en) | Casting method of low-alloy hydraulic pump stator casting | |
| CN102994784A (en) | Method for phase structure in refined hypereutectic aluminum-silicon alloy by strong magnetic field composited with alterant | |
| CN1943917A (en) | Process for preparing large cast steel support roller | |
| CN105624571B (en) | A kind of super-thick steel plate and its production technology | |
| CN1059365C (en) | Manufacture of composite milling roller | |
| CN1280042A (en) | Continuous casting equipment and method for composite roller | |
| CN101596590B (en) | Method for inhibiting large steel ingot from macrosegregation by mechanical stirring | |
| CN107243618A (en) | A kind of production method of compound high speed steel roll | |
| Miyazawa | Continuous casting of steels in Japan | |
| CN117245064A (en) | Process and equipment for controlling crystallization structure of integral casting roller | |
| CN100591438C (en) | Method for manufacturing low segregation large-scale steel ingot | |
| CN103128248B (en) | Semisolid centrifugal separating casting ball grinding process, process device and ball casting machine | |
| CN200954539Y (en) | Large cast-steel supporting roller casting apparatus | |
| CN102069174A (en) | Method for producing centrifugal electroslag smelting and casting double-base composite roller | |
| CN102747244A (en) | Method for compound modification refining of aluminum alloy cast structure | |
| CN2820386Y (en) | Electromagnetic continuous casting device for composite roller | |
| CN101654743A (en) | Device and method for directionally solidifying steel ingot with oversized cross section by electric slag furnace | |
| CN201586733U (en) | Large cross-section blank casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070228 Termination date: 20210601 |