CN105312540B - The composite roll manufacturing process and equipment of a kind of reusable edible roller core - Google Patents

The composite roll manufacturing process and equipment of a kind of reusable edible roller core Download PDF

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CN105312540B
CN105312540B CN201510771147.5A CN201510771147A CN105312540B CN 105312540 B CN105312540 B CN 105312540B CN 201510771147 A CN201510771147 A CN 201510771147A CN 105312540 B CN105312540 B CN 105312540B
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roll
roller
composite roll
water
composite
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CN105312540A (en
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丁家伟
丁刚
耿德英
鹿微微
鹿策
施孟达
孔军
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Danyang Hengqing Composite Material Science & Technology Co Ltd
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Danyang Hengqing Composite Material Science & Technology Co Ltd
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Abstract

The invention discloses a kind of composite roll manufacturing process of reusable edible roller core and equipment, 800~1000 DEG C are integrally heated to the thick-wall hollow steel pipe plug in Combined water cooling crystallizer using sensing heater, pour into roll shaft working lining liquation, continue heating 10~50 minutes, start lowering or hoisting gear to be lifted up heater with certain speed, insulation ring was raised to through 5~15 minutes to stop, continue heating 10~50 minutes, feeding is carried out to rising head, stops water flowing after heating and cools down 30 minutes~24 hours.Using hot mosaic technology that composite roll set and mandrel connection is integral, technique is simple, and production efficiency is high, securely and reliably, service life length.Recycling for roller core is realized, its utilization rate saves the waste of material and the energy, reduce environmental pollution more than 60%.

Description

The composite roll manufacturing process and equipment of a kind of reusable edible roller core
Technical field
The invention belongs to metal-pressed machine technical field, the composite roll manufacture of more particularly to a kind of reusable edible roller core Processes and apparatus, the manufacture of composite roll suitable for Steel-rolling Industry.
Background technology
Roll is described as " mothers of steel ", is metal material is produced plastic deformation in the production of the rolling metals such as steel, aluminium, copper Instrument, be to determine milling train production efficiency and mill bar quality and the important large component of economy, be mill milling can not or Scarce critical piece and most important large consumable part, its consuming cost are about the 5%~15% of Rolling production cost.If The ratio for the factors, then its shared production cost such as the production for considering to bring by roll consumption is shut down, drop is produced and plant maintenance increases Again can be higher.
Milling train is the visual plant in metal-pressed machine production, is the aobvious of one national Iron & Steel Development technical merit of measurement Principal coordinates will.It is the critical component largely consumed in Rolling production and roll is the chief component of milling train, is to determine one The basic guarantee of national rolling technique development level, be a national metal material design, material forming technique, processing and manufacturing and The embodiment directly perceived of the basic industries comprehensive technical levels such as heat treatment.Rolling industry production in, each stocking none be not according to Shaped by the rolling of roll, in other words " no roller is good-for-nothing ", so, the quality of roll and effect are most important.
Roll quality is not only related to Rolling production cost and milling train production operational availability, also largely influences stocking Quality.With the development of steel rolling technology, rolling mill speed and automaticity improve constantly, to the resistance to of roll quality particularly roll Mill property, intensity and toughness etc. propose higher requirement.Roller performance is further improved to adapt to the needs of milling train, realizes steel The energy-saving production of section bar, it is the fresh target that roll development person faces.
China's roll manufacturing industry passes through the development and growth of decades, turns into roll yield big country of the world, roll at present There is very big development in terms of manufacturing technology and material kind.In terms of roll material, from spheroidal graphite cast-iron, alloy infinitely chilled ductile cast iron Acicular constituent spheroidal graphite cast-iron till now, high alloy infinitely chilled ductile cast iron, rich chromium cast iron, hard alloy, semi-high speed steel and High-speed steel etc..It is multiple also to develop into centrifugation from conventional cast single material and press over system casting composite in terms of casting technique Close casting process.Current domestic roll deliverability has reached more than 1,000,000 tons, and design and manufacture ability can reach 120~ 1500000 tons.With China's rolling equipment transformation and constantly introduce advanced milling train from foreign countries, milling train is to automation, continuous Change, heavy-duty direction are developed, and the tissue and performance to roll propose higher requirement.
However, the metallurgical roller rolled steel mean consumption that China voluntarily develops still has larger difference compared with developed countries Away from.Recent statistics from China Steel association, China's steel yield has reached 1,125,570,000 tons within 2014, accounts for global steel production Amount more than 40%, calculated according to the kg/t steel of loss per ton steel roll 1.0~1.2, more than 110~130 ten thousand tons of roll of year consumption, year disappears Consume more than 20,000,000,000 yuan of roll fund.In order to meet being actually needed for Rolling production, China is required for spending a large amount of foreign exchanges every year Import roll, the only high-quality roll of import in 2010 be about more than 3.0 ten thousand ton, and consumption foreign exchange is about more than 200,000,000 dollar.China's roll it is big Amount consumption, causes resource and the huge waste of the energy.In addition, external roll Year's consumption is also above million tons, the market demand Amount is big.No matter so big learies are from the rolling cost of steel rolling mill, or in terms of the energy and resource consumption in China All it is a huge waste, environment and resource is exerted heavy pressures on.Therefore, roll quality is improved, extends roll campaign, no It is only capable of saving a large amount of foreign exchanges, but also substantial amounts of roll material can be saved, develops high-quality long-life roll material and its shaping It technology, can not only meet domestic demand, but also foreign exchange earning can be realized.
Domestic and international existing roll at present, mostly using overall cast steel roll and grain roll.Grain roll and cast steel Roll is compared, and its wearability is preferable, but intensity is poor, easy roll breakage.In order to improve roller surface hardness, apply in recent years The metal casting of heterogeneity is respectively adopted in the centrifugal casting technique of roll, the roll surface and roll centre of centrifugal casting roll, in the hope of The unification of roller surface hardness and roll barrel intensity.Because the manufacturing cost of this roll is high, roll, which is disposably scrapped, to be caused The reasons such as the significant wastage of material, the application of centrifugal roller are extremely restricted.Then, there is composite (back-up) roll, combination is rolled Roller is solving the problems such as waste of material to a certain degree, and assembly roller uses antifriction alloy roller set, and roll campaign improves A lot, but the connecting mode of its roll shaft and roller set uses key connecting or welding manner more, in actual production, collapses set, scroll key Frequently occur etc. accident.In addition, roll made from existing inventive technique is substantially all after being worn there is cladding material, roller core is only There is melting again to realize the problem of recycling, cause the waste of material and the energy.
The existing roll structure in China removes roll such as universal mill horizontal roller, the edger roll of fraction special shape, pipeline at present Part roll, section steel straightening roller, cantilever rolling mill roll using recycle Split type structure roll outside, more than 90% it is all types of Roll is all overall structure.Cause the significant wastage of roll material.
For produced problem in assembly roller practical application, China Patent No. CN1142993A discloses a kind of high energy Assembly roller is measured, overcomes present combination roll the deficiencies in the prior art, solves collapse set during assembly roller use well, The problem of peeling.Its mainly describe it is a kind of manufacture and assembling process according to pressure rolling power on the basis of to the effective work department of roll Position input energy, makes it improve the high-energy roll of intensity, rigidity, resistance to flaking and wearability to greatest extent.But through reality Border is investigated, and the high-energy roll rarely has application in production, because it has the following disadvantages:The roller set of the high-energy assembly roller It is complicated with the assembly manipulation process of roll shaft;The unloading difficulty of roller set is big;Assembling and unloading are intended to rely on exclusively for this product design Hydraulic test, due to the whole series hydraulic test production cost is significantly raised;In the high-energy assembly roller course of work Because of Long-term Vibration, roller set deformation(Energy)During reduction, it is necessary to unload roll and ressemble, waste time and energy;Roll sleeve unloads When easily cause the scratch of roll shaft outer surface and roll sleeve inner surface, greatly shorten the service life of roll shaft.Chinese patent CN2129657Y " prestressing combination roll ", CN1059482A " steel cementing-combined roller technology ", CN1092992A " combinations It is bushing compound that formula hollow roll and its manufacture method ", ZL02223546.9 " Roller ring composite roller " etc. also individually disclose manufacture Roll technology;These combined-type roll collar (roller set) rolls are in a variety of different ways by antifriction alloy collars (roller set) and mandrel Link together.It must be " outer hard interior tough " that they, which do not mention collars, so as on the premise of roll safe handling is ensured Service life is improved, these rolls can have phenomena such as collapsing set, destroying in actual use, thus not be widely applied.
With the continuous progress of Steel-rolling Industry technology, in order to ensure work roll cooling security, it is desirable to which roll is using process Middle core will have higher toughness;At the same time, in order to improve steel yield and product surface quality, iron and steel enterprise is to roll The requirement of service life and wearability also increasingly improves, and this just needs roll working lining using the high high-abrasive material of hardness.Therefore, Domestic and international scientific worker is doing discussion and the practical work of ring roller always.Develop bushing composite roll.
Compound Bushing Rolls are one of roll types.It is differently to make the body of roll and roller core and roll neck two parts respectively After performing, one is assembled them into by hot charging interference fit using cast setting technique, wearability can be met simultaneously and resisted The performance requirement of both contradictions of breaking property.The roller core for accounting for total amount more than 60% can be with cycle applications, and account for whole roll weight and exist The roll sleeve through more renewing both can be with recycle applications after Rejection standard is reached for less than 40% roll sleeve.With it is traditional Solid roll is compared, compound bushing to remanufacture roll not only quality is good but also reduce the cost of roll.
Current domestic and international developed composite ring manufacturing process, manufactured mostly using centrifugal composite casting method, due to by The limitation of manufacturing process, manufactured composite roll set inner layer material is spheroidal graphite cast-iron, there is no legal system to make the internal layer of steel material. And use imbedding process mostly using composite roll set inner layer material is preheated into 300~800 DEG C in heating furnace, it is put into molding sand In, then mould assembling pours into roller set outer layer of composite material, and the major defect of the technique is:Heated in heating furnace, due to heating when Between it is long, heated object is oxidizable, although can by protecting the surface of solids not aoxidized in surface of solids coating protective agent, Thoroughly to prevent that the oxidation of the surface of solids is extremely difficult.Further, since pre- warmware is fetched into cast from heating furnace, among this Time is typically whard to control, causes the actual temperature change of compound preceding pre- warmware larger, can not stably ensure compound interface Quality.And solid portion is washed away for a long time using high-temperature liquid metal, the efficiency of heating surface is very low, has both wasted substantial amounts of height Warm metal causes the unnecessary waste of the energy and material.Simultaneously because the chilling action of solid portion, casting mold is poured into liquid metals The liquid metals close to solid portion solidifies in the surface of solids immediately afterwards, and the metal that this layer quickly solidifies is easily cracked, real Crackle spreads in the application of border.
The content of the invention
It is an object of the invention to there is the deficiency of technology for oneself, propose that a kind of simple production process, equipment investment are small, raw Efficiency high, the composite roll manufacturing process and equipment of a kind of reusable edible roller core that cost is low, performance is good are produced, simplifies composite roll set Manufacturing process, composite roll set performance and production efficiency are improved, reduces production cost and equipment investment.
The equipment scheme for solving its technical problem is:The equipment has a planer-type region directional solidification jacking equipment 16, Lifting platform 17 is installed on planer-type region directional solidification jacking equipment 6, being provided with electromagnetic induction above lifting platform 17 adds Hot device 8, lifting screw 15 is rotated by lifting motor 14 or hydraulic test drives lifting platform 17 to be moved down in set speed It is dynamic, the side installation electromagnetic induction electrical power control cabinet 19 of directional solidification jacking equipment 16, electromagnetic induction power supply in planer-type region Two output ends of switch board 19 are connected by water-cooled cable 20 with the both ends of electromagnetic induction heating device 8, are determined in planer-type region There is a base support to the bottom of solidification jacking equipment 16, support plinth 12 is installed on base support 13, in support plinth Water-cooled bottom water tank 11 is installed, the center of bottom water tank 11 is manhole, in being provided with above bottom water tank 11 above 12 The heart is the bottom board 10 of manhole, and Combined water cooling crystallizer 7 is provided with above bottom board 10, is crystallized in water cooling The top of device 7 is provided with insulation ring 6, the center hole that roll shaft plug 5 passes through support plinth 12, bottom water tank 11 and bottom board 12 The center of crystallizer 7 is fixed on, connection has casting runner 3 in the side of bottom board 10, and casting runner 3 is arranged on base support On 13 and sit brick 4 with cast to be connected, cast sits that brick 4 is installed above feed trumpet 2, and casting leakage is provided with the top of feed trumpet Bucket 1, there is pouring ladle 18 above depositing funnel 1.
There are water inlet pipe 23 and outlet pipe 24 respectively in the side of Water-cooled bottom water tank 11;Water mold 7 in crystallizer by justifying The fourplatemold arc water cooling box assembly 7 of equally distributed 2 or 3 integral multiples forms on week, in each arc water cooling box The bottom connection of body component 7 has water inlet pipe 21, and on the top of each arc water cooling box assembly 7, connection has outlet pipe 22, passes through Arc water cooling box assembly 7 is connected into drum-shaped entirety by attachment bolt 9;Insulation ring 6 is resistance to by refractory material or fiber reinforcement Fiery material manufacture;Electromagnetic induction power supply be line-frequency induction power supply, medium frequency induction power supply, high frequency induction power supply, frequency be 500Hz~ 3000Hz。
Solving the process technology scheme that its technical problem uses is:First by the heavy wall of the required material and size manufactured After hollow steel pipe inner layer material surface carries out oil removing, processing of rust removing, one layer of antioxidizing paint is uniformly coated on its surface, is put into and adds Carry out in hot stove after being preheating to 500 DEG C~700 DEG C, be fixed on by the center hole of support plinth, bottom water tank and bottom board The center of crystallizer, starting region directional solidification lowering or hoisting gear, electromagnetic induction heater is dropped to the bottom of crystallizer, opened The water inlet pipe and water outlet pipe of water mold and bottom water tank, start electromagnetic induction heating power supply, by outside water mold Sensing heater carries out surface heating to thick-wall hollow steel pipe inner layer material, after to be heated to 800 DEG C~1000 DEG C, will smelt Required composite parts roll composite roll set outer sphere molten metal pour into pouring ladle, by the molten metal in pouring ladle according to it is pre- Fixed cast program by depositing funnel, feed trumpet, casting runner pour into crystallizer with thick-wall hollow steel pipe inner layer material it Between space in, in casting process, electromagnetic induction heater does not stop heating, after pouring metal melt, sensing heater Continue heating 10~50 minutes, poured into a mould molten metal is kept liquid within the regular hour, to increase the liquid solid time, Interface is set to form metallurgical binding, starting region directional solidification lowering or hoisting gear carries electromagnetic induction heater with certain speed upwards Rise, gradually disengage the roller set composite bed successively consecutive solidification, and according to quality requirement in difference from bottom to top of electromagnetic induction heating Region in control the different rate of climb, forming region directional solidification, be raised at insulation ring and stop through 5~15 minutes, continue Heating is carried out 10~50 minutes to insulation ring, to postpone insulated feeder setting time, feeding is carried out to rising head, makes composite-layer metal Gas and field trash in liquid fully float, and eliminate composite-layer metal casting flaw, stop heating after reaching the scheduled time, continue Water flowing cools down 30 minutes~24 hours, is high abrasion resisting material by the outer layer cast, and internal layer is high tenacity, pair of high-strength material Metal composite roller set takes out out of crystallizer;
The composite roll of founding set is machined to finished size, composite roll set is heat-treated, then by 100~ Particle that 200 purposes have more rib wedge angles and that stiff dough is tough, uniformly it is bonded to the endoporus of composite roll set respectively using binding agent Surface and the outer surface of mandrel, roller set is preheating to and covers 400~550 DEG C of temperature less than roller, soaking time is after 8~12 hours Directly it is pressed on mandrel, the table of more rib wedge angles and the tough particle of stiff dough embedded roller set internal layer and mandrel outer layer after roller set cooling Face, interface bond strength is improved, composite roll set is coupled to an organic whole with mandrel and form roller set roll, assembling finishes Composite roll afterwards enters stove and cools to room temperature with the furnace.
The composite roll of described reusable edible roller core covers outer layer by composite roll roller, composite roll roller covers internal layer and core Axle three parts form, composite roll cladding material be spheroidal graphite cast-iron, graphitic steel, nickel-chrome-molybdenum alloy cast iron, rich chromium cast iron, Gao Ge Cast steel, alloy cast steel, high boron alloy steel, high-speed steel, mould steel high-abrasive material;Roller set inner layer material is rolling, forges or cast Mild steel, low-alloy steel, medium carbon steel or spheroidal graphite cast-iron, the alloy cast iron made.
The mandrel is using various the material rolls or steel-casting or forged steel pieces or ironcasting scrapped.
The interference fit is interference fitted using H7/s6.
Described particles more prismatic wedge angles and that stiff dough is tough are SiC, WC, A12O3Or mullite.
Described fourplatemold can both have been realized by adding or reducing various sizes of arc water cooling box assembly The adjustment of fourplatemold inner diameter size within the specific limits, meet the manufacture of different different-diameter size composite roll sets, So as to reduce mould expense.
The composition of the mandrel surface antioxidizing paint is Na2B4O7, SiO2, Na2O, K2O, A12O3, CaO one kind therein Or Multiple components composition.
Beneficial effect
The bushing formula composite roll and manufacture of the recyclable sharp roller core of the present invention, it is main special compared with prior art Putting is:
1st, compound roll shaft is manufactured using the invented technology, because special casting method makes the metal of melting coagulate from bottom to top Gu being advantageous to the feeding of liquid metals, the defects of centre spinning is also easy to produce microstructure segregation, manufactured compound roll shaft are overcome Material does not have gravity segregation, and crystalline structure is excellent, even tissue, and the tiny consistency of crystal grain is high, and centrifugal casting can not be used before making The production of the material of method production is possibly realized.The range of choice of plug and composite material is wide, can be wanted according to different uses The forging or the composite material of rod cast thereby material and different performance, skin of the roll for asking free selection varying strength requirement can To use high alloy material, good red hardness and high temperature abrasion resistance are made it have.
2nd, roll mandrel is directly preheated in crystallizer before cast using electromagnetic induction heater, it is right after cast Roll mandrel and the molten metal poured into a mould are incubated, and reduce the temperature difference between roller core and outer sphere molten metal, are advantageous to double Metal material it is good compound, there is good mechanical performance.On the other hand in order to reduce casting flaw, metallic composite is allowed Realize to lower and upper consecutive solidification, the flowing of molten metal automatically from top to bottom, be advantageous to molten metal feeding from top to bottom, so as to contract The short length in feeding area, reduce casting flaw, form the fine and close composite roll without shrinkage cavity;Continue in casting process to multiple Condensation material carries out electromagnetic induction heating, can reduce the oxidation for by the preheating temperature of composite, reducing composite, Ke Yizeng The liquid feeding solid time, promote the diffusion of two phase material more abundant, while function composite by electromagnetic stirring can be utilized, increase liquid metals pair By washing away for mandrel material surface, promote the matter and energy exchange between two phase material, make compound bed boundary easily controllable, from And the bond strength at interface is greatly improved, interface quality is good, it is possible to achieve good metallurgical bonding interface.
3rd, the present invention is molded using water mold substituted metal type, during roller sleeve forming, due to roller set outer layer gold Category liquid is the cooled and solidified in water mold, and cooling velocity is high, and nucleation ability is strong, can obtain the tiny solidification group of crystal grain Knit, dense structure's degree is high, and hardness is uniform, and mechanical property is good, improves the obdurability and thermal fatigue resistance of roll, has higher The properties possessed needed for wearability and cold-resistant, thermal fatigue and modern roll working layer, and there is excellent cutting Processing characteristics, casting and forging can be achieved, the service life of roll is improved, so as to meet modern rolling steel industry to high-performance roll Requirement.The life-span is intended for single use more than the new roll more than 20~30% of material used in original in the composite roll set manufactured through the technique.It is comprehensive Life-span improves more than 50%.
4th, it is molded using water mold substituted metal type, the technique recovery rate of casting is high, and liquid metals consumption is reduced, can 15~30% are saved than permanent mold casting, rate of metal is high, has saved material.
5th, due to being molded using water mold, the mold use life-span is up to thousands of times or even tens of thousands of times, great section Modeling Material has been saved, has reduced die cost, due to without sand molding, when having saved a large amount of molding sand and moulder, improving Efficiency.Substantial amounts of manufacturing expense has been saved, has reduced manufacturing cost, has reduced the waste of resource and the energy and the dirt of environment Dye.
6th, using the method for castingin realize high abrasion the body of roll and high tenacity, high tensile steel tube lining it is firm compound, keep away Exempt from faying face cracking.And roller set then can ensure that overall through hardening, harden, thus service life is higher, and effect of rolling is more preferable.And work as After outer material of roll wears, as long as changing composite roll set, roller core is turned waste into wealth without changing, can roll existing a large amount of give up Roller recycles, and its utilization rate realizes recycling for roller core more than 60%, saves the waste of material and the energy, subtract Environmental pollution is lacked.
7th, using more rib wedge angles and the tough particle insertion of stiff dough plus interference fit connecting process, roll structure is stable, connection Mode is simple, and interface bond strength is high, and security reliability is high, is not in loosening, the fracture phenomena of roller set in use, so as to letter Change processing technology, reduce production cost.
8th, thermal effectiveness can not be ensured because solid roll volume is big, and roller set then can ensure that overall through hardening, harden, Thus by a relatively large margin improve roll working life, effect of rolling is more preferable.
9th, the selection of roll working lining overcoat high-abrasive material and scope of design are wider, even with same material, use Life-span is higher;When the manufacture for new roll, the range of choice of mandrel material is wide, can use the forging of high intensity, high tenacity Steel, cast steel material, so as to improve roll shock resistance, make that it is easy to solve alloy cast iron roller core without roll breakage in Rolling production Roll breakage problem.
10th, there is the production efficiency higher than centrifuging process using the technique and device fabrication composite roll set, and overcomes Component segregation and the drawbacks of can not manufacturing forged steel roll neck roll present in Centrifugal compound foundry process, controllable process parameters are few, Simple production process is easily operated, and production efficiency is high, and power consumption is small, production cost lower than electroslag remelting process 1/2, compares submerged arc bead welding Method low 2/3, equipment simply invest it is small, it is applied widely.
11st, it is energy-saving to subtract dirt.Because roller set weight is only the 1/3 of solid roll weight, compared with solid roll, often give birth to One ton of roll is produced, casting will reduce 60%.If plug is reused three times, compared with solid roll, often roll one ton of steel and roll Roller, which is mutually measured, reduces 70%.China's ironcasting energy utilization rate is 15~25%, and the energy consumption for often producing 1 ton of qualified ironcasting is 500~700kg marks coal, accounts for the 15% of production cost.National about 1,200,000 tons of roll yield, the energy thus saved and reduction Pollution be huge.
Brief description of the drawings
Fig. 1 is present device installation diagram, wherein 1 is depositing funnel, 2 be feed trumpet, and 3 be a cast runner, and 4 sit for cast Brick, 5 be roll shaft plug, and 6 be insulation ring, and 7 be fourplatemold, and 8 be electromagnetic induction heater, and 9 be attachment bolt, and 10 be to pour Bottom plate is noted, 11 be bottom water tank, and 12 be support plinth, and 13 be base support, and 14 be lifting motor, and 15 be lifting screw, and 16 be dragon Gate-type region directional solidification jacking equipment, 17 be lifting platform, and 18 be pouring ladle, and 19 electromagnetic induction electrical power control cabinets, 20 be water cooling Cable, 23 be bottom tank inlet pipe, and 24 be bottom radiator drain.
Fig. 2 is fourplatemold structure chart of the present invention, wherein 7 be fourplatemold.
Fig. 3 is fourplatemold arc water cooling casing modular construction top view of the present invention, wherein 21 be that combined type crystallizes Device water inlet pipe, 22 be fourplatemold outlet pipe, and 7 be crystallizer arc water cooling box assembly.
Fig. 4 is cisten mechanism figure in bottom of the present invention, wherein 11 be bottom water tank, be water inlet pipe, be outlet pipe.
Fig. 5 is cisten mechanism top view in bottom of the present invention, wherein 11 be bottom water tank, 23 be bottom tank inlet pipe, and 24 be bottom water Case outlet pipe.
Fig. 6 is composite roll noose composition of the present invention, wherein 25 be that composite roll roller covers outer layer, 26 be composite roll roller set It is interior.
Fig. 7 is roller structure figure of the present invention, wherein 27 be composite roll mosaic coating, 28 be composite roll mandrel.
Embodiment
With reference to accompanying drawing, it is as follows to provide embodiments of the invention:
Embodiment 1:In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the equipment has a planer-type region directional solidification Jacking equipment 16, lifting platform 17 is installed on planer-type region directional solidification jacking equipment 6, installed above lifting platform 17 There is electromagnetic induction heater 8, lifting screw 15 is rotated by lifting motor 14 or hydraulic test drives lifting platform 17 with set Speed move up and down, the side installation electromagnetic induction electrical power control cabinet 19 of directional solidification jacking equipment 16 in planer-type region, Two output ends of electromagnetic induction electrical power control cabinet 19 are connected by water-cooled cable 20 with the both ends of electromagnetic induction heating device 8, There is a base support bottom of planer-type region directional solidification jacking equipment 16, is provided with support plinth on base support 13 12, Water-cooled bottom water tank 11 is installed above support plinth 12, the center of bottom water tank 11 is manhole, the water tank 11 bottom of at The bottom board 10 installed above for having center to be manhole, is provided with Combined water cooling crystallizer above bottom board 10 7, insulation ring 6 is installed on the top of water mold 7, roll shaft plug 5 passes through support plinth 12, bottom water tank 11 and bottom board 12 center hole is fixed on the center of crystallizer 7, and in the side of bottom board 10, connection has casting runner 3, and casting runner 3 is pacified On base support 13 and sit brick 4 with cast to be connected, cast sits that brick 4 is installed above feed trumpet 2, at the top of feed trumpet Sprue cup 1 is installed, there is pouring ladle 18 above depositing funnel 1.
There are water inlet pipe 23 and outlet pipe 24 respectively in the side of Water-cooled bottom water tank 11;Water mold 7 in crystallizer by justifying The fourplatemold arc water cooling box assembly 7 of equally distributed 2 or 3 integral multiples forms on week, in each arc water cooling box The bottom connection of body component 7 has water inlet pipe 21, and on the top of each arc water cooling box assembly 7, connection has outlet pipe 22, passes through Arc water cooling box assembly 7 is connected into drum-shaped entirety by attachment bolt 9;Insulation ring 6 is resistance to by refractory material or fiber reinforcement Fiery material manufacture;Electromagnetic induction power supply is line-frequency induction power supply, medium frequency induction power supply, high frequency induction power supply, frequency 800Hz.
When work starts:The low carbon steel thick hollow steel pipe mandrel surface of the required size manufactured is removed first After oil, processing of rust removing, one layer of antioxidizing paint is uniformly coated on its surface, is put into heating furnace after carrying out being preheating to 550 DEG C, is led to The center hole for crossing support plinth, bottom water tank and bottom board is fixed on the center of crystallizer, the lifting of starting region directional solidification Device, electromagnetic induction heater is dropped to the bottom of crystallizer, open the water inlet pipe and water outlet pipe of water mold and bottom water tank, started Electromagnetic induction heating power supply, table is carried out to thick-wall hollow steel pipe plug by the sensing heater outside water mold Face is heated, and after to be heated to 890 DEG C, the roll composite roll set outer sphere molten metal for the Ni-Cr-Mo composition smelted is poured into pouring ladle It is interior, the molten metal in pouring ladle is poured into crystallization according to predetermined cast program by depositing funnel, feed trumpet, casting runner In space in device between thick-wall hollow steel pipe plug, in casting process, electromagnetic induction heater does not stop heating, metal After liquid is poured, sensing heater continues heating 12 minutes, poured into a mould molten metal is kept within the regular hour Liquid, to increase the liquid solid time, interface is set to form metallurgical binding, starting region directional solidification lowering or hoisting gear is by electromagnetic induction heating Device is lifted up with certain speed, gradually disengages the roll shaft composite bed of electromagnetic induction heating successively consecutive solidification from bottom to top, And the different rates of climb is controlled in different regions according to quality requirement, forming region directional solidification, guarantor was raised to through 6 minutes Stop at warm circle, continue to carry out insulation ring heating 15 minutes, to postpone insulated feeder setting time, feeding is carried out to rising head, The gas in composite-layer metal liquid and field trash is fully floated, composite-layer metal casting flaw is eliminated, after reaching the scheduled time Stop heating, continue water flowing and cool down 14 hours, be high abrasion resisting material by the outer layer cast, internal layer is high tenacity, high intensity material The bimetallic composite roll set of material takes out out of crystallizer;
The composite roll set of founding is machined to finished size, after composite roll set is heat-treated, then by 80 Particle that purpose has more rib wedge angles and that stiff dough is tough, uniformly it is bonded to the bore area of composite roll set respectively using binding agent With the outer surface of mandrel, roller set is preheating to and covers 450 DEG C of temperature less than roller, soaking time is directly pressed into core after 8 hours On axle, the surface of more rib wedge angles and the tough particle of stiff dough embedded roller set internal layer and mandrel outer layer after roller set cooling, boundary is improved Face bond strength, composite roll set is coupled to organic whole with mandrel and form roller set roll, compound after assembling is rolled Roller enters stove and cools to room temperature with the furnace.
Embodiment 2:In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the equipment has a planer-type region directional solidification Jacking equipment 16, lifting platform 17 is installed on planer-type region directional solidification jacking equipment 6, installed above lifting platform 17 There is electromagnetic induction heater 8, lifting screw 15 is rotated by lifting motor 14 or hydraulic test drives lifting platform 17 with set Speed move up and down, the side installation electromagnetic induction electrical power control cabinet 19 of directional solidification jacking equipment 16 in planer-type region, Two output ends of electromagnetic induction electrical power control cabinet 19 are connected by water-cooled cable 20 with the both ends of electromagnetic induction heating device 8, There is a base support bottom of planer-type region directional solidification jacking equipment 16, is provided with support plinth on base support 13 12, Water-cooled bottom water tank 11 is installed above support plinth 12, the center of bottom water tank 11 is manhole, the water tank 11 bottom of at The bottom board 10 installed above for having center to be manhole, is provided with Combined water cooling crystallizer above bottom board 10 7, insulation ring 6 is installed on the top of water mold 7, roll shaft plug 5 passes through support plinth 12, bottom water tank 11 and bottom board 12 center hole is fixed on the center of crystallizer 7, and in the side of bottom board 10, connection has casting runner 3, and casting runner 3 is pacified On base support 13 and sit brick 4 with cast to be connected, cast sits that brick 4 is installed above feed trumpet 2, at the top of feed trumpet Sprue cup 1 is installed, there is pouring ladle 18 above depositing funnel 1.
There are water inlet pipe 23 and outlet pipe 24 respectively in the side of Water-cooled bottom water tank 11;Water mold 7 in crystallizer by justifying The fourplatemold arc water cooling box assembly 7 of equally distributed 2 or 3 integral multiples forms on week, in each arc water cooling box The bottom connection of body component 7 has water inlet pipe 21, and on the top of each arc water cooling box assembly 7, connection has outlet pipe 22, passes through Arc water cooling box assembly 7 is connected into drum-shaped entirety by attachment bolt 9;Insulation ring 6 is resistance to by refractory material or fiber reinforcement Fiery material manufacture;Electromagnetic induction power supply is line-frequency induction power supply, medium frequency induction power supply, high frequency induction power supply, frequency 800Hz.
When work starts:The low-alloy steel thick-wall hollow steel pipe mandrel surface of the required size manufactured is removed first After oil, processing of rust removing, one layer of antioxidizing paint is uniformly coated on its surface, is put into heating furnace after carrying out being preheating to 650 DEG C, is led to The center hole for crossing support plinth, bottom water tank and bottom board is fixed on the center of crystallizer, the lifting of starting region directional solidification Device, electromagnetic induction heater is dropped to the bottom of crystallizer, open the water inlet pipe and water outlet pipe of water mold and bottom water tank, started Electromagnetic induction heating power supply, table is carried out to thick-wall hollow steel pipe plug by the sensing heater outside water mold Face is heated, and after to be heated to 990 DEG C, the roll composite roll set outer sphere molten metal for the Ni-Cr-Mo composition smelted is poured into pouring ladle It is interior, the molten metal in pouring ladle is poured into crystallization according to predetermined cast program by depositing funnel, feed trumpet, casting runner In space in device between thick-wall hollow steel pipe plug, in casting process, electromagnetic induction heater does not stop heating, metal After liquid is poured, sensing heater continues heating 15 minutes, poured into a mould molten metal is kept within the regular hour Liquid, to increase the liquid solid time, interface is set to form metallurgical binding, starting region directional solidification lowering or hoisting gear is by electromagnetic induction heating Device is lifted up with certain speed, gradually disengages the roll shaft composite bed of electromagnetic induction heating successively consecutive solidification from bottom to top, And the different rates of climb is controlled in different regions according to quality requirement, forming region directional solidification, guarantor was raised to through 7 minutes Stop at warm circle, continue to carry out insulation ring heating 20 minutes, to postpone insulated feeder setting time, feeding is carried out to rising head, The gas in composite-layer metal liquid and field trash is fully floated, composite-layer metal casting flaw is eliminated, after reaching the scheduled time Stop heating, continue water flowing and cool down 18 hours, be high abrasion resisting material by the outer layer cast, internal layer is high tenacity, high intensity material The bimetallic composite roll set of material takes out out of crystallizer;
The composite roll set of founding is machined to finished size, after composite roll set is heat-treated, then by 80 Particle that purpose has more rib wedge angles and that stiff dough is tough, uniformly it is bonded to the bore area of composite roll set respectively using binding agent With the outer surface of mandrel, roller set is preheating to and covers 500 DEG C of temperature less than roller, soaking time is directly pressed into core after 10 hours On axle, the surface of more rib wedge angles and the tough particle of stiff dough embedded roller set internal layer and mandrel outer layer after roller set cooling, boundary is improved Face bond strength, composite roll set is coupled to organic whole with mandrel and form roller set roll, compound after assembling is rolled Roller enters stove and cools to room temperature with the furnace.
Embodiment 3:In Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, the equipment has a planer-type region directional solidification Jacking equipment 16, lifting platform 17 is installed on planer-type region directional solidification jacking equipment 6, installed above lifting platform 17 There is electromagnetic induction heater 8, lifting screw 15 is rotated by lifting motor 14 or hydraulic test drives lifting platform 17 with set Speed move up and down, the side installation electromagnetic induction electrical power control cabinet 19 of directional solidification jacking equipment 16 in planer-type region, Two output ends of electromagnetic induction electrical power control cabinet 19 are connected by water-cooled cable 20 with the both ends of electromagnetic induction heating device 8, There is a base support bottom of planer-type region directional solidification jacking equipment 16, is provided with support plinth on base support 13 12, Water-cooled bottom water tank 11 is installed above support plinth 12, the center of bottom water tank 11 is manhole, the water tank 11 bottom of at The bottom board 10 installed above for having center to be manhole, is provided with Combined water cooling crystallizer above bottom board 10 7, insulation ring 6 is installed on the top of water mold 7, roll shaft plug 5 passes through support plinth 12, bottom water tank 11 and bottom board 12 center hole is fixed on the center of crystallizer 7, and in the side of bottom board 10, connection has casting runner 3, and casting runner 3 is pacified On base support 13 and sit brick 4 with cast to be connected, cast sits that brick 4 is installed above feed trumpet 2, at the top of feed trumpet Sprue cup 1 is installed, there is pouring ladle 18 above depositing funnel 1.
There are water inlet pipe 23 and outlet pipe 24 respectively in the side of Water-cooled bottom water tank 11;Water mold 7 in crystallizer by justifying The fourplatemold arc water cooling box assembly 7 of equally distributed 2 or 3 integral multiples forms on week, in each arc water cooling box The bottom connection of body component 7 has water inlet pipe 21, and on the top of each arc water cooling box assembly 7, connection has outlet pipe 22, passes through Arc water cooling box assembly 7 is connected into drum-shaped entirety by attachment bolt 9;Insulation ring 6 is resistance to by refractory material or fiber reinforcement Fiery material manufacture;Electromagnetic induction power supply is line-frequency induction power supply, medium frequency induction power supply, high frequency induction power supply, frequency 800Hz.
When work starts:The low carbon steel thick hollow steel pipe mandrel surface of the required size manufactured is removed first After oil, processing of rust removing, one layer of antioxidizing paint is uniformly coated on its surface, is put into heating furnace after carrying out being preheating to 650 DEG C, is led to The center hole for crossing support plinth, bottom water tank and bottom board is fixed on the center of crystallizer, the lifting of starting region directional solidification Device, electromagnetic induction heater is dropped to the bottom of crystallizer, open the water inlet pipe and water outlet pipe of water mold and bottom water tank, started Electromagnetic induction heating power supply, table is carried out to thick-wall hollow steel pipe plug by the sensing heater outside water mold Face is heated, and after to be heated to 950 DEG C, the roll composite roll set outer sphere molten metal for the Ni-Cr-Mo composition smelted is poured into pouring ladle It is interior, the molten metal in pouring ladle is poured into crystallization according to predetermined cast program by depositing funnel, feed trumpet, casting runner In space in device between thick-wall hollow steel pipe plug, in casting process, electromagnetic induction heater does not stop heating, metal After liquid is poured, sensing heater continues heating 18 minutes, poured into a mould molten metal is kept within the regular hour Liquid, to increase the liquid solid time, interface is set to form metallurgical binding, starting region directional solidification lowering or hoisting gear is by electromagnetic induction heating Device is lifted up with certain speed, gradually disengages the roll shaft composite bed of electromagnetic induction heating successively consecutive solidification from bottom to top, And the different rates of climb is controlled in different regions according to quality requirement, forming region directional solidification, guarantor was raised to through 7 minutes Stop at warm circle, continue to carry out insulation ring heating 20 minutes, to postpone insulated feeder setting time, feeding is carried out to rising head, The gas in composite-layer metal liquid and field trash is fully floated, composite-layer metal casting flaw is eliminated, after reaching the scheduled time Stop heating, continue water flowing and cool down 24 hours, be high abrasion resisting material by the outer layer cast, internal layer is high tenacity, high intensity material The bimetallic composite roll set of material takes out out of crystallizer;
The composite roll set of founding is machined to finished size, after composite roll set is heat-treated, then by 80 Particle that purpose has more rib wedge angles and that stiff dough is tough, uniformly it is bonded to the bore area of composite roll set respectively using binding agent With the outer surface of mandrel, roller set is preheating to and covers 450 DEG C of temperature less than roller, soaking time is directly pressed into core after 8 hours On axle, the surface of more rib wedge angles and the tough particle of stiff dough embedded roller set internal layer and mandrel outer layer after roller set cooling, boundary is improved Face bond strength, composite roll set is coupled to organic whole with mandrel and form roller set roll, compound after assembling is rolled Roller enters stove and cools to room temperature with the furnace.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry For personnel it should be appreciated that the present invention is not limited by step embodiment, that described in step embodiment and specification is the present invention Principle, without departing from the spirit and scope of the present invention, design of the invention can by other various forms implement transport With also having various changes and modifications, these changes and improvements equally all fall within the protetion scope of the claimed invention.The present invention Claimed scope is by appended claims and its equivalent thereof.

Claims (9)

  1. A kind of 1. composite roll manufacturing process of reusable edible roller core, it is characterised in that:First by the required material manufactured and After the thick-wall hollow steel pipe inner layer material surface of size carries out oil removing, processing of rust removing, on its surface, uniformly one layer of coating is anti-oxidation Coating, it is put into heating furnace after carrying out being preheating to 500 DEG C~700 DEG C, passes through the center of support plinth, bottom water tank and bottom board Circular hole is fixed on the center of crystallizer, starting region directional solidification lowering or hoisting gear, electromagnetic induction heater is dropped into crystallizer Bottom, open the water inlet pipe and water outlet pipe of water mold and bottom water tank, start electromagnetic induction heating power supply, by installed in water cooling knot Sensing heater outside brilliant device carries out surface heating to thick-wall hollow steel pipe inner layer material, to be heated to 800 DEG C~1000 DEG C Afterwards, the roll composite roll set outer sphere molten metal for the required composite parts smelted is poured into pouring ladle, by the gold in pouring ladle Category liquid according to predetermined cast program by depositing funnel, feed trumpet, casting runner pour into crystallizer with thick-wall hollow steel In space between inner tube layer material, in casting process, electromagnetic induction heater does not stop heating, and pouring metal melt finishes Afterwards, sensing heater continues heating 10~50 minutes, poured into a mould molten metal is kept liquid within the regular hour, with Increase the liquid solid time, interface is formed metallurgical binding, starting region directional solidification lowering or hoisting gear is by electromagnetic induction heater with one Fixed speed is lifted up, and gradually disengages the roller set composite bed of electromagnetic induction heating successively consecutive solidification from bottom to top, and according to Quality requirement controls the different rates of climb in different regions, forming region directional solidification, insulation is raised to through 5~15 minutes Stop at circle, continue to carry out heating 10~50 minutes to insulation ring, feeding is carried out to rising head, stop adding after reaching the scheduled time Heat, continue water flowing and cool down 30 minutes~24 hours, be high abrasion resisting material by the outer layer cast, internal layer is high tenacity, high intensity The bimetallic composite roll set of material takes out out of crystallizer;
    The composite roll set of founding is machined to finished size, composite roll set is heat-treated, then by 100~200 Particle that purpose has more rib wedge angles and that stiff dough is tough, uniformly it is bonded to the bore area of composite roll set respectively using binding agent With the outer surface of mandrel, roller set is preheating to and covers 400~550 DEG C of temperature less than roller, soaking time is direct after 8~12 hours It is pressed on mandrel, the surface of more rib wedge angles and the tough particle of stiff dough embedded roller set internal layer and mandrel outer layer after roller set cooling, Interface bond strength is improved, composite roll set is coupled to an organic whole with mandrel and forms roller set roll, after assembling Composite roll enter stove and cool to room temperature with the furnace;
    The composite roll of described reusable edible roller core covers outer layer by composite roll roller, composite roll roller covers internal layer and mandrel three Part forms, and composite roll roller set cladding material is spheroidal graphite cast-iron, graphitic steel, nickel-chrome-molybdenum alloy cast iron, rich chromium cast iron, Gao Ge Steel, alloy cast steel, high boron alloy steel, high-speed steel, mould steel high-abrasive material;Composite roll roller set inner layer material is rolling, forging Or mild steel, low-alloy steel, the medium carbon steel of casting;
    The mandrel is using the various material rolls scrapped.
  2. 2. a kind of composite roll manufacturing process of reusable edible roller core according to claim 1, it is characterized in that:It is described anti-oxidation The composition of coating is Na2B4O7, SiO2, Na2O, K2O, A12O3, CaO one or more composition compositions therein.
  3. 3. a kind of composite roll manufacturing process of reusable edible roller core according to claim 1, it is characterized in that:Described more ribs Shape wedge angle and particle that stiff dough is tough be SiC, WC, Al2O3Or mullite.
  4. 4. a kind of equipment for the composite roll manufacturing process for realizing reusable edible roller core as claimed in claim 1, it is characterized in that: The equipment has a planer-type region directional solidification jacking equipment, and lifting is provided with the directional solidification jacking equipment of planer-type region Platform, electromagnetic induction heater is installed above lifting platform, passes through lifting motor(14)Rotate lifting screw or hydraulic test Lifting platform is driven to be moved up and down with set speed, the side installation electromagnetism sense of directional solidification jacking equipment in planer-type region Answer electrical power control cabinet, the both ends phase that two output ends of electromagnetic induction electrical power control cabinet pass through water-cooled cable and electromagnetic induction heating device Connection, in planer-type region, there is a base support bottom of directional solidification jacking equipment, supporting bottom is provided with base support Seat, is provided with Water-cooled bottom water tank, the center of bottom water tank is manhole, is installed above the water tank of bottom above support plinth The bottom board for having center to be manhole, is provided with Combined water cooling crystallizer above bottom board, is crystallized in water cooling The top of device is provided with insulation ring, and roll shaft plug is fixed on knot by the center hole of support plinth, bottom water tank and bottom board The center of brilliant device, in the side of bottom board, connection has casting runner, and casting runner is arranged on base support and sat with cast Brick is connected, and cast sits that brick is installed above feed trumpet, sprue cup is provided with the top of feed trumpet, in the upper of depositing funnel There is pouring ladle in face.
  5. 5. a kind of equipment of the composite roll manufacturing process of reusable edible roller core according to claim 4, it is characterized in that:Water cooling Crystallizer by crystallizer circumference the fourplatemold arc water cooling box assembly of equally distributed 2 or 3 integral multiples form, In the bottom of each arc water cooling box assembly, connection has water inlet pipe, and on the top of each arc water cooling box assembly, connection has Water pipe, arc water cooling box assembly is connected into by drum-shaped entirety by attachment bolt.
  6. 6. a kind of equipment of the composite roll manufacturing process of reusable edible roller core according to claim 4, it is characterized in that:Electromagnetism Induction power supply is line-frequency induction power supply, medium frequency induction power supply, high frequency induction power supply, and frequency is 500Hz~3000Hz.
  7. 7. a kind of equipment of the composite roll manufacturing process of reusable edible roller core according to claim 4, it is characterized in that:Insulation Circle is manufactured by refractory material.
  8. 8. a kind of equipment of the composite roll manufacturing process of reusable edible roller core according to claim 4, it is characterized in that:It is described Fourplatemold can realize roll interior diameter chi by adding or reducing various sizes of arc water cooling box assembly Very little adjustment within the specific limits, meet the manufacture of the compound roll shaft of different-diameter size.
  9. 9. a kind of equipment of the composite roll manufacturing process of reusable edible roller core according to claim 4, it is characterized in that:In water There are water inlet pipe and outlet pipe in the side of cold bottom water tank respectively.
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CN106140819B (en) * 2016-08-31 2018-08-14 唐山亿联盛轧辊有限公司 A kind of production method of compound high speed steel roll
CN106825516A (en) * 2017-02-19 2017-06-13 丹阳恒庆复合材料科技有限公司 A kind of composite roll roller covers manufacturing process and equipment
CN108722830B (en) * 2017-04-20 2021-07-16 宝山钢铁股份有限公司 Hot-rolled chromium-molybdenum low-alloy steel rust-proof production method
CN107511398B (en) * 2017-08-09 2019-07-02 三鑫重工机械有限公司 A kind of strong exhibition roll of wear-resistant type strip
CN107962167B (en) * 2017-11-08 2019-09-27 昆明理工大学 A kind of method that founding remanufactures roll
CN111375743A (en) * 2018-12-29 2020-07-07 沈阳铸造研究所有限公司 Casting device and precision casting method for high-temperature alloy part with complex structure
CN111974805A (en) * 2019-05-21 2020-11-24 本钢板材股份有限公司 High-chromium steel forged steel combined vertical roll of hot strip roughing mill

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