CN102615108B - Centrifugal casting high-speed steel composite roll and manufacture method thereof - Google Patents

Centrifugal casting high-speed steel composite roll and manufacture method thereof Download PDF

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CN102615108B
CN102615108B CN201210101928.XA CN201210101928A CN102615108B CN 102615108 B CN102615108 B CN 102615108B CN 201210101928 A CN201210101928 A CN 201210101928A CN 102615108 B CN102615108 B CN 102615108B
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steel
roll
iron
speed steel
layer
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CN201210101928.XA
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CN102615108A (en
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符寒光
邢建东
雷永平
蒋业华
周荣
郭红星
岑启宏
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北京工业大学
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Abstract

The invention relates to a centrifugal casting high-speed steel composite roll and a manufacture method thereof and belongs to the field of casting. The composite roll is composed of outer layer high-speed steel, middle layer graphitic steel and core high-strength nodular cast iron by centrifugal compounding. The centrifugal casting high-speed steel composite roll is based on the conventional high-carbon high-vanadium high-speed steel roll, the content of vanadium is appropriately reduced, niobium is added at the same time, and the Nb/V is controlled to be 0.3 to 0.5 so that Nb and V form complex carbide (V, Nb) C so as to avoid forming segregation under the action of centrifugal force. A roll core of the high-speed steel composite roll adopts high-strength nodular cast iron, and a multivariate graphite steel middle layer is poured between an outer layer and the roll core for preventing interfusing elements of Cr, B, and the like which cause embrittlement when the nodular cast iron is poured to be fused with the outer layer high-speed steel. Microalloying processing for refining the organization is carried out on a roll surface high-speed steel material and the middle layer graphitic steel so as to achieve the purpose of improving the thermal cracking capacity of the roll material. The centrifugal casting high-speed steel composite roll has high overall performance, long service life and good economic benefits.

Description

A kind of centrifugal casting quick-cutting steel composite roller and manufacture method thereof
Technical field
The present invention is a kind of composite roll manufacture method, and particularly a kind of centrifugal casting quick-cutting steel composite roller and manufacture method thereof, belong to casting technology field.
Background technology
Along with developing by leaps and bounds that steel rolling is produced, improve roll quality and become an important ring.On modernization novel rolling mill, require roll to there is hardness layer depth and the roll surface of the performance such as even, good wear-resisting, anti-strip, thermal crack resistant and anti-rough surface, there is the roller core of some strength and toughness.This is that conventional cast method institute is unapproachable.The composite roll that adopts centre spinning method to manufacture, can make liquid metal far surpass crystallization and freezing under the centrifugal action of gravity decades of times, therefore can obtain the roll surface of dense structure, function admirable, and be applicable to two kinds of different materials and carry out composite casting, to meet the different performance of roll surface and roller core.Thereby can meet well present-day mill steel rolling production requirement.In recent years, centrifugal casting roll has become the important method of production high-quality roll, obtains very large development.
In order to improve the castability Chinese invention patent CN1082950 of composite roll, composite roll and its production method are disclosed, the composite roll with the core of using the housing parts of excellent wear and the hard high alloy cast steel of anti-surperficial roughening or cast iron manufacture and manufacturing with tough and tensile cast iron or cast steel, the formation of housing parts cast iron is 1.0-3.0%C by weight, 2.0% or lower Si, 2.0% or lower Mn, 2.0-15.0% Cr, 10.0% or lower Mo, 2.0-8.0% V, all the other are Fe and inevitable impurity, within the scope of case surface to 50 mm depth, by Analysis deterrmination, the average grain diameter 100 μ m or less of metal structure matrix, and meet formula m 2≤ 1.2m 1, m in formula 1case surface average grain diameter, m 2be 50 mm depth place average grain diameters, this composite roll is produced with centre spinning method.Chinese invention patent CN1070433 also discloses the composite roll of outer material of roll and centrifugal casting.This outer material of roll comprises, C:1.5~3.5%, below Si:1.5%, below Mn:1.2%, Cr:5.5~12.0%, Mo:2.0~8.0%, V:3.0~10.0%, Nb:0.6~7.0%, and need meet following formula requirement: (1): V+1.8Nb≤7.5C-6.0 (%), (2) 0.2≤Nb/V≤0.8, remainder is Fe and inevitable impurity, has advantages of that to adopt centre spinning method casting, mar proof and resistance to breaking property all good.Chinese invention patent CN1631565 also discloses High Vanadium Rapid Steel Composite Roll And Production Technology, roll is divided into roller core and roll wearing layer, roller core adopts the good low-alloy steel of toughness or mild steel material to make, roll wearing layer adopts high-vanadium high-speed steel material, the essential element content of this high-vanadium high-speed steel is: C:1.8-3.5%, V:7-12%, Cr:4-5%, Mo:2-4%, Ni:0.5-1.5%, surplus is iron.Its production technology is: roller core and roll wearing layer are integrated by the compound founding of eddy-current heating consecutive solidification method for crystallising.This invention roll wearability is good, and cost performance is high, safe and reliable.Roll dense structure, evenly, segregation-free, bi-material is good metallurgical binding, bond strength is high, can not rupture, cracked phenomenon in use procedure, can reduce that consumable accessory lost efficacy and the shutdown number of times that causes.Effectively improved toughness and the wearability of roll, solved centre spinning component segregation easily occurs, CPC method, ESR method complex manufacturing, the problem that cost is high.Chinese invention patent CN1861829 also discloses composite high chromium steel roller and the preparation method of improvement.This invention is the improvement about the composite roll that is high chrome with working lining to hot-strip and preparation method, it is characterized in that high chrome components of working layer is C0.8-2.0%, Si0.5-1.2%, Mn0.4-1.5%, Ni0.4-1.5%, Cr8-16%, Mo0.2-3.0%, V0.1-1.0%, N0.01-0.25%, B0.001-0.003%, Al0.01-0.3%, P≤0.03%, S≤0.015%, all the other are iron and impurity, and adopt vertical centrifugal laminated pouring.The more original high chrome of gained composite high chromium steel roller has, and working lining hardness drop is less than 3HSD, and the wearability of roll can improve more than 30%, and roll millimeter amount of rolling improves 33% left and right.The fatigue resistance of roll also improved more than 25% more originally simultaneously, resistance to corrosion is also significantly improved, roll single reconditioning quality also can reduce below 20% more originally, and working lining and core material metallurgical junction get togather, and more originally can be enhanced about more than once service life.Chinese invention patent CN1803325 also discloses the manufacture method of compound high speed steel roll.The outer high-speed steel of this composite roll and core graphitic steel are metallurgical binding, and its manufacture method is to adopt centrifugal casting technique by after two kinds of metal material cast moldings, then composite roll is carried out roughing and carries out quenching heat treatment.Chinese invention patent CN1846887 also discloses a kind of compound high speed steel roll and manufacture method thereof, the compound high speed steel roll of this invention is composited by centre spinning method by the body of roll and roller core, rolling body material is high carbon high-speed steel, the percentage by weight of the chemical composition mainly containing is: C, 1.8~2.8; Mo, 4.0~8.0; V, 3.0~7.0; Nb, 1.5~4.0; Cr, 6.0~12.0; RE, 0.1~0.25; Ti, 0.15~0.40; N, 0.08~0.20; K, 0.06~0.18; Si < 2.0; Mn < 2.0; S < 0.05; P < 0.05; Surplus is Fe and undetectable trace impurity; Roller core material is high-strength ductile cast iron, and the percentage by weight of the chemical composition mainly containing is: C, 3.2~3.6; Si, 1.8~2.4; Mn, 0.4~0.8; Ni, 0.3~1.2; Cr, 0.3~0.8; Mo, 0.2~0.5; Mg, 0.03~0.08; RE, 0.05~0.14; P < 0.08; S < 0.03; Surplus is Fe and undetectable trace impurity.Its wearability is obviously better than high Ni-Cr infinite cold hardness cast iron roll and high-chromium iron-cast roller, and technique is simple, and production efficiency is high.Chinese invention patent CN102069174A also discloses a kind of production method of centrifugal electroslag smelting casting double-basis composite roll, it is characterized in that it comprises the following steps: (1), prepare slag liquid, get the calcirm-fluoride of (55-65) % and (25-35) % alundum (Al2O3) and (5-15) magnesia of % be placed in fusing slagging liquid in stove, get metallic iron with casting and make consutrode after fusing; (2), slag liquid is poured in stove, adopt fusing consutrode to carry out electroslag melting, make consutrode be fused into gradually iron liquid and enter in stove, obtain slag iron mixed liquor; (3), slag iron mixed liquor is injected to quantitative pouring bag and carry out Metallurgical processing; Slag iron mixed liquor is injected to centrifugal casting machine and fill type and solidifying under centrifugal force, obtain body of roll housing blank; (4) after cleaning body of roll housing blank inner surface slag thing, with iron liquid breaker roll body of roll housing, fill out core and process, obtain centrifugal electroslag smelting casting double-basis composite roll.The roll quality that this invention is produced is good, and quality is high.Chinese invention patent CN101386029 also discloses a kind of composite roll mixed with reinforcement cast iron base and manufacture method thereof; the composite bed of this composite roll mixed with reinforcement cast iron base making (working lining) is the cast iron-base composite material that tungsten filament and carbide particle mix enhancing, and the roller core of roll is high-strength gray cast iron.Its preparation method is that the tungsten silk screen being compiled into tungsten filament is arranged in the casting mold of centrifuge in advance, its number of plies is arranged 1~4 layer, in the time of 1300 ℃~1350 ℃, high-strength gray cast iron is poured in the centrifuge casting mold with certain rotation speed, the roll of as cast condition is chilled to room temperature through Overheating Treatment thermal diffusion stove after changing mutually, obtains composite roll mixed with reinforcement cast iron base.The composite bed of this composite roll mixed with reinforcement cast iron base (working lining) is good with the combination of roller core, experimental results show that, composite roll mixed with reinforcement cast iron base prepared by the present invention has higher red hardness and good wearability, the service life that internal stress is little, can extend roll greatly.Chinese invention patent CN101351569 also discloses a kind of centrifugally cast composite roll, have: skin, it consists of: by containing C:2.5~9%, Si:0.1~3.5%, Mn:0.1~3.5%, V:11~40% in quality %, surplus is that Fe and inevitable impurity form; Intermediate layer, consists of the high-speed steel class alloy that is formed at above-mentioned outer inner face; Internal layer, consists of the cast iron or the cast steel that are formed at above-mentioned intermediate layer inner face.Chinese invention patent CN1068764 also discloses a kind of centrifugal casting molten-slag, it is characterized in that its chemical composition (% by weight) is: SiO 2, Al 2o 3, Fe 2o 3in any one or more sums be 15.0~30.0%, K 2o, Na 2o, Li 2in O, any one or more sums are that in 15.0~39.9%, CaO, MgO, FeO, any one or more sums are 0.1~10%, any or both sums 5.0~20.0% in fluoride or chloride, B 2o 330.0~55.0%.This slag has good fast thawing, spreadability, precipitation, can meet centrifugally cast composite roll completely.Chinese invention patent CN1264749 also discloses a kind of high-speed antiwear cast steel, is applicable to large-scale wearing piece, composite roller operational layer.The specific chemical composition (% by weight) that is characterized in it is as follows: 1.8-4.2%C, 2-12%W, 3-12%Mo, 4-15%Cr, 0-10%Co, 2.5-10%V, 0.3-2.5%Nb, 0.5-1.5%Si, 0.3-0.8%Mn, 0.2-0.6%Al, 0.02-0.10%N ,≤0.03%S, ≤ 0.03%P, all the other are Fe, this invention feature is a kind of high-carbon, high vanadium, chromium type high casting high speed steel, casting character is good, wear-resisting and red hardness good.Chinese invention patent CN1076393 also discloses a kind of manufacture method of steel-cored cast-iron compound roll, adopt traditional sand mold rising pouring spiral-flow type and electric arc heated non-feedhead casting process, steel core is processed into curved, and at the coated one deck fusible metal layer of steel core surface, steel core is combined with cast iron housing curved surface, fastening compound by molten steel solidification shrinkage stress.Due to coated one deck fusible metal on steel core top layer, setting temperature is reduced, setting time extends, balance the shrinkage stress that produces of molten steel solidification, effectively solved and adopted traditional casting process at the steel core surface compounded cast iron of casting, the technical barrier that shell easily splits, steel core is combined with cast iron housing curved surface, frictional force is large, incrust.
But, adopt centre spinning method to produce compound high speed steel roll and run into three subject matters.(1) due to high-speed steel, contain the alloying elements such as V, Nb, W, Mo, the carbide density that they form differs greatly and easily forms segregation.When centrifugal casting, the VC primary crystal carbide that early solidification is separated out, because density is little compared with molten steel, inwardly forms segregation in set of surfaces under centrifugal action, makes microstructure and composition inhomogeneous.(2) traditional centrifugally cast composite roll, heart portion material is casting pig or the magnesium iron that has Graphite Precipitation.When cladding material is high-speed steel, due to the element that contains a large amount of chilling tendencies, thereby make outer and heart portion binding site graphitization deterioration, add the segregation of carbide, joint portion is become fragile, cause composite roll skin to peel off.(3) when roll heart portion material adopts while having the cast steel of high strength and high elongation rate, because its fusing point is higher than high-speed steel, during cast by the inner surface melting mixing of the outer high-speed steel with having solidified.The fusing point of this melting layer is lower than heart portion molten steel, becomes the position of final set, very easily produces the intensity of casting flaw, reduction binding site.When requiring heart portion material selection forged steel, centre spinning more cannot be accomplished.
Summary of the invention
The present invention seeks to the problems referred to above that exist in producing for centrifugal casting quick-cutting steel composite roller, develop a kind of element segregation light, roll surface and roller core are combined, and roll surface hardness is high, uniformity of hardness and wearability is good and roll neck intensity is high compound high speed steel roll manufacture method.The present invention is on existing high carbon and vanadium high speed steel roll basis, suitably reduces content of vanadium, adds niobium element simultaneously, makes Nb become double carbide (V, Nb) C with V-arrangement.When it is separated out as primary crystal, density and molten steel are roughly the same, thereby have avoided forming segregation under centrifugal action.Thereby Nb and V need have a certain amount of proportioning in Composition Design, the present invention is controlled at 0.3-0.5 by Nb/V.The roller core of centrifugal casting quick-cutting steel composite roller still adopts high-strength ductile cast iron, when preventing from pouring into a mould magnesium iron and the fusion of outer high-speed steel sneak into Cr, B etc. cause the element of embrittlement, between skin and roller core, pour into a mould intermediate layer, adjust the composition in intermediate layer, make each interlayer all reach metallurgical binding, centrifugal casting quick-cutting steel composite roller of the present invention is three-decker.In addition, in order to prevent occurring crackle in roll centrifugal casting process, roll surface high speed steel material is carried out to the microalloy treatment of thinning microstructure, reach the object that improves roll material thermal crack resistant ability.
Object of the present invention can realize by following measures:
Compound high speed steel roll of the present invention is formed by centrifugal compound by outer high-speed steel, intermediate layer graphitic steel and core hi-strength nodular iron.Chemical composition (the mass fraction of its outer high-speed steel, be %): 1.45~1.55C, 0.4~0.6B, 10.5~11.5Cr, 3.5~4.5Mo, 0.6~0.8Co, 3.0~3.6V, 1.08~1.50Nb, and 0.3≤Nb/V≤0.5,1.0~1.2Ni, 0.04~0.08Mg, 0.04~0.08RE, 0.03~0.05Al, 0.03~0.05Ca, 0.03~0.05Ba, Si<1.2, Mn<0.5, S<0.03, P<0.04, all the other are Fe and inevitable trace impurity.(mass fraction, is %) chemical composition of its intermediate layer graphitic steel: 2.6~2.8C, 1.6~1.8Si, Mn<0.4, S<0.02, P<0.07,0.03~0.06RE, 0.03~0.06Mg, 0.03~0.05Ca, 0.03~0.05Ba, 0.015~0.035Zr, 0.015~0.035Bi, 0.015~0.035Sb, 0.3~0.6Cu, all the other are Fe and inevitable trace impurity.(mass fraction, is %) chemical composition of its core magnesium iron: 3.1~3.4C, 1.8~2.2Si, 0.4~0.6Mn, S<0.02, P<0.07,0.15~0.35Mo, 0.35~0.50Ni, 0.015~0.035Zr, 0.015~0.035Bi, 0.015~0.035Sb, 0.03~0.05Ca, 0.03~0.05Ba, 0.040~0.068Mg, 0.020~0.045RE, all the other are Fe and inevitable trace impurity.
Compound high speed steel roll electro-smelting of the present invention, its manufacturing technology steps is:
(1) the elder generation's outer high-speed steel of difference melting, intermediate layer graphitic steel and core magnesium iron in 3 electric furnaces, the smelting process of its ectomesoderm high-speed steel is: 1. by steel scrap, carburant, ferrochrome, molybdenum-iron, ferro-niobium, metallic cobalt and the fusing of nickel plate Hybrid Heating, when liquid steel temperature rises to 1580~1600 ℃, add successively calsibar alloy, aluminium, vanadium iron and ferro-boron, then be warming up to 1600~1630 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth is crushed to the fritter of 12~15mm, be placed in casting ladle bottom, adopt and in bag, pour method to the molten steel processing of going bad.The smelting process of intermediate layer graphitic steel is: 1. by steel scrap, carburant and the fusing of copper coin Hybrid Heating, when liquid steel temperature rises to 1500~1520 ℃, add successively ferrosilicon and calsibar alloy, then be warming up to 1520~1550 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. by magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, adopt and in bag, to pour method to the molten steel processing of going bad, when molten steel is come out of the stove, adding is the silicon content (quality of molten steel gross mass 0.50~0.65% of coming out of the stove, as follows) 75~80% ferrosilicon carries out inoculation.The smelting process of core magnesium iron is: 1. by steel scrap, carburant, molybdenum-iron and the fusing of nickel plate Hybrid Heating, when molten iron temperature rises to 1480~1500 ℃, add successively ferromanganese, ferrosilicon and calsibar alloy, then be warming up to 1520~1550 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. by magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, the method that pours in employing bag is carried out nodularization and rotten processing to molten iron, when molten iron is come out of the stove, add is that the come out of the stove ferrosilicon of silicon content 75~80% of molten iron gross mass 0.75~0.80% carries out inoculation.
(2) first at centrifuge upper skin of the roll high-speed steel, casting mold rotation speed n during cast skin of the roll 1determine as follows:
n 1 = 5520 &gamma; 1 &CenterDot; r 1 &CenterDot; &beta; 1 Formula (1)
In formula: n 1casting mold revolution during-cast skin of the roll high-speed steel, r/min, γ 1-high-speed steel liquation density, g/cm 3, r 1-body of roll inside radius, cm, β 1-adjust coefficient, high-speed steel is 1.2~1.4.
Skin of the roll high-speed steel pouring temperature is 1460~1480 ℃, and after cast, adding immediately anti-oxidation flux, its addition is 1.3~1.5kg/m 2(body of roll inner surface).
(3) skin of the roll high-speed steel is poured after 8min~15min, with contactless temperature-measuring instrument, measures body of roll internal surface temperature, when temperature is 1300 ℃~1350 ℃, and cast roll intermediate layer graphitic steel.Casting mold rotation speed n while pouring into a mould roll intermediate layer graphitic steel 2determine as follows:
n 2 = 5520 &gamma; 2 &CenterDot; r 2 &CenterDot; &beta; 2 Formula (2)
In formula: n 2casting mold revolution during-cast roll intermediate layer graphitic steel, r/min, γ 2-roll intermediate layer graphitic steel liquation density, g/cm 3, r 2-roll intermediate layer graphitic steel inside radius, cm, β 2-adjust coefficient, roll intermediate layer graphitic steel is 1.5~1.6.
Roll intermediate layer graphitic steel pouring temperature is 1430~1450 ℃, and its THICKNESS CONTROL, at 10~15mm, adds anti-oxidation flux immediately after cast, and its addition is 1.0~1.2kg/m 2(roll intermediate layer graphitic steel inner surface).
(4) roll intermediate layer graphitic steel is poured after 3min~6min, with contactless temperature-measuring instrument, measure roll intermediate layer graphitic steel internal surface temperature, when temperature is 1220 ℃~1280 ℃, direct casting roller core molten ductile cast iron under static state, molten steel pouring temperature is 1340 ℃~1390 ℃.
(5) roller core molten iron is poured after 12~24h, takes out compound high speed steel roll and enters burial pit, then carries out roughing.
(6) compound high speed steel roll after roughing is heated to 1020~1050 ℃ with stove, is incubated 3~6h, then air-cooled, finally at 500~530 ℃, carry out temper, tempering insulation time 10~18h, under same process, tempering is twice.Finally be refined to given size and precision.
Fig. 1 fills out core schematic diagram after compound high speed steel roll mould assembling, and Fig. 2 is the compound high speed steel roll schematic diagram after fine finishining.
The performance of roll is to be determined by its composition, and the Design of Chemical Composition of roll of the present invention be the reasons are as follows:
Compound high speed steel roll of the present invention is formed by centrifugal compound by outer high-speed steel, intermediate layer graphitic steel and core hi-strength nodular iron.In order to alleviate element segregation, in its outer high-speed steel, not containing the larger W elements of density, red hardness and high temperature abrasion resistance in order to ensure high-speed steel roll, added amounts of cobalt element.In order to improve its quenching degree and to improve wearability, more chromium element and appropriate boron element have also been added.The segregation causing in order to alleviate low density VC, also adds appropriate niobium element, and 0.3≤Nb/V ratio≤0.5 makes Nb become density close to double carbide (V, the Nb) C of molten steel with V-arrangement, can obviously alleviate the segregation that VC causes.In addition, in layer high-speed steel, also add the microalloy elements such as appropriate rare earth, magnesium, calcium, barium, aluminium outside, except rising deoxidation, desulfidation, also has obvious thinning microstructure, improve the effect of carbon-boron compound form and distribution, can obviously improve the anti-casting cracking ability of high-speed steel and mechanical property, improve roll wearability.
The intermediate layer of composite roll of the present invention adopts polynary graphitic steel.Graphitic steel has higher intensity, as the intermediate layer of magnesium iron roller core and the high-speed steel body of roll, can obviously improve the bond strength of composite roll composite bed.But common graphite steel brittleness is large, in order to improve graphitic steel performance, the present invention adds trace bismuth, improve graphite form and distribution, add micro-antimony, can prevent that distortion from appearring in graphite, add trace zirconium, there is obvious thinning microstructure effect, add the elements such as trace rare-earth, magnesium, calcium, barium, except rising deoxidation, desulfidation, also have obvious thinning microstructure, improve the effect of graphitic steel toughness.
The core of composite roll of the present invention (comprising upper and lower roll neck) is used high-strength ductile cast iron.In order to make magnesium iron obtain high strength, appropriate molybdenum and nickel have been added.In order to improve percentage elongation and the impact flexibility of magnesium iron, guarantee that roll does not occur roll breakage accident in using, added the elements such as trace bismuth, antimony, zirconium, rare earth, magnesium, calcium, barium, can thinning microstructure, improve graphite form and distribution, improve magnesium iron combination property.
The present invention compared with prior art, has following characteristics:
(1) composite roll roller core magnesium iron of the present invention and body of roll high-speed steel have been realized good metallurgical binding by intermediate layer graphitic steel, guarantee to there will not be in roll casting, heat treatment, machining and use procedure layering, cracking.
(2) composite roll of the present invention is because of the buffer action of intermediate layer graphitic steel, guarantee that the elements such as boron in body of roll high-speed steel, chromium can not sneak in roller core magnesium iron, in addition, the acting in conjunction of the elements such as trace bismuth, antimony, zirconium, rare earth, magnesium, calcium, barium, can thinning microstructure, improve graphite form and distribution, roller core magnesium iron is kept under high strength prerequisite, also have higher percentage elongation and good impact flexibility.Its tensile strength is greater than 800Mpa, and percentage elongation is greater than 3%, and impact flexibility is greater than 18J/cm 2.
(3) compound high speed steel roll of the present invention, because roller core intensity is high, good toughness, occurs without roll breakage phenomenon in use, guarantees that compound high speed steel roll has good result of use.
Accompanying drawing explanation
After the mould assembling of Fig. 1 compound high speed steel roll, fill out core schematic diagram:
1-rising head case; 2-end cap; 3-casting mold; The outer high-speed steel of 4-; 5-intermediate layer graphitic steel; 6-base member case; 7-refractory brick; 8-base plate.
Fig. 2 compound high speed steel roll schematic diagram: 11-roll neck; The 12-body of roll; 13-intermediate layer; 14-roller core.
The specific embodiment
Anti-oxidation flux adopts but is not limited to O type glass dregs below.
Below in conjunction with embodiment, the present invention is further described.
Embodiment 1
In 500 kilograms, 500 kilograms and 1.5 tons of electric induction furnaces, smelt outer high-speed steel, intermediate layer graphitic steel and core magnesium iron respectively, then in horizontal centrifuge upper skin of the roll and intermediate layer, direct casting roller core molten ductile cast iron under static state, the manufacturing technology steps of compound high speed steel roll is:
(1) smelting of outer high-speed steel, intermediate layer graphitic steel and core magnesium iron.The smelting process of its ectomesoderm high-speed steel is: 1. by steel scrap, carburant, ferrochrome, molybdenum-iron, ferro-niobium, metallic cobalt and the fusing of nickel plate Hybrid Heating, when liquid steel temperature rises to 1581 ℃, add successively calsibar alloy, aluminium, vanadium iron and ferro-boron, then be warming up to 1605 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth is crushed to the fritter of 12~15mm, is placed in casting ladle bottom, adopt and in bag, pour method to the molten steel processing of going bad.The smelting process of intermediate layer graphitic steel is: 1. by steel scrap, carburant and the fusing of copper coin Hybrid Heating, when liquid steel temperature rises to 1518 ℃, add successively ferrosilicon and calsibar alloy, then be warming up to 1547 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, adopt and in bag, to pour method to the molten steel processing of going bad, when molten steel is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 79.0% of molten steel gross mass 0.50% carries out inoculation.The smelting process of core magnesium iron is: 1. by steel scrap, carburant, molybdenum-iron and the fusing of nickel plate Hybrid Heating, when molten iron temperature rises to 1483 ℃, add successively ferromanganese, ferrosilicon and calsibar alloy, then be warming up to 1522 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, the method that pours in employing bag is carried out nodularization and rotten processing to molten iron, when molten iron is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 75.4% of molten iron gross mass 0.80% carries out inoculation.
(2) first at centrifuge upper skin of the roll high-speed steel, casting mold rotation speed n during cast skin of the roll 1determine as follows:
n 1 = 5520 &gamma; 1 &CenterDot; r 1 &CenterDot; &beta; 1 Formula (3)
In formula: n 1casting mold revolution during-cast skin of the roll high-speed steel, r/min, γ 1-high-speed steel liquation density, g/cm 3, r 1-body of roll inside radius, cm, β 1-adjust coefficient, high-speed steel is 1.4.
Skin of the roll high-speed steel pouring temperature is 1465 ℃, and after cast, adding immediately anti-oxidation flux, its addition is 1.3kg/m 2(body of roll inner surface).
(3) skin of the roll high-speed steel is poured after 12min, with contactless temperature-measuring instrument, measures body of roll internal surface temperature, when temperature is 1317 ℃, and cast roll intermediate layer graphitic steel.Casting mold rotation speed n while pouring into a mould roll intermediate layer graphitic steel 2determine as follows:
n 2 = 5520 &gamma; 2 &CenterDot; r 2 &CenterDot; &beta; 2 Formula (4)
In formula: n 2casting mold revolution during-cast roll intermediate layer graphitic steel, r/min, γ 2-roll intermediate layer graphitic steel liquation density, g/cm 3, r 2-roll intermediate layer graphitic steel inside radius, cm, β 2-adjust coefficient, roll intermediate layer graphitic steel is 1.6.
Roll intermediate layer graphitic steel pouring temperature is 1448 ℃, and its THICKNESS CONTROL, at 12mm, adds anti-oxidation flux immediately after cast, and its addition is 1.2kg/m 2(roll intermediate layer graphitic steel inner surface).
(4) roll intermediate layer graphitic steel is poured after 5min, with contactless temperature-measuring instrument, measures roll intermediate layer graphitic steel internal surface temperature, when temperature is 1246 ℃, and direct casting roller core molten ductile cast iron under static state, molten steel pouring temperature is 1351 ℃.
(5) roller core molten iron is poured after 12h, takes out compound high speed steel roll and enters burial pit, then carries out roughing.
(6) compound high speed steel roll after roughing is heated to 1020 ℃ with stove, insulation 6h, then air-cooled, finally at 500 ℃, carry out temper, tempering insulation time 18h, under same process, tempering is twice.Finally be refined to given size and precision.Fig. 1 fills out core schematic diagram after compound high speed steel roll mould assembling, and Fig. 2 is the compound high speed steel roll schematic diagram after fine finishining.The outer high-speed steel composition of compound high speed steel roll is in Table 1, and the intermediate layer graphitic steel composition of compound high speed steel roll is in Table 2, and the core magnesium iron composition of compound high speed steel roll is in Table 3, and the performance of compound high speed steel roll is in Table 4.
Embodiment 2
In 500 kilograms, 500 kilograms and 1.5 tons of electric induction furnaces, smelt outer high-speed steel, intermediate layer graphitic steel and core magnesium iron respectively, then in horizontal centrifuge upper skin of the roll and intermediate layer, direct casting roller core molten ductile cast iron under static state, the manufacturing technology steps of compound high speed steel roll is:
(1) smelting of outer high-speed steel, intermediate layer graphitic steel and core magnesium iron.The smelting process of its ectomesoderm high-speed steel is: 1. by steel scrap, carburant, ferrochrome, molybdenum-iron, ferro-niobium, metallic cobalt and the fusing of nickel plate Hybrid Heating, when liquid steel temperature rises to 1599 ℃, add successively calsibar alloy, aluminium, vanadium iron and ferro-boron, then be warming up to 1628 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth is crushed to the fritter of 12~15mm, is placed in casting ladle bottom, adopt and in bag, pour method to the molten steel processing of going bad.The smelting process of intermediate layer graphitic steel is: 1. by steel scrap, carburant and the fusing of copper coin Hybrid Heating, when liquid steel temperature rises to 1501 ℃, add successively ferrosilicon and calsibar alloy, then be warming up to 1524 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, adopt and in bag, to pour method to the molten steel processing of going bad, when molten steel is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 75.4% of molten steel gross mass 0.65% carries out inoculation.The smelting process of core magnesium iron is: 1. by steel scrap, carburant, molybdenum-iron and the fusing of nickel plate Hybrid Heating, when molten iron temperature rises to 1497 ℃, add successively ferromanganese, ferrosilicon and calsibar alloy, then be warming up to 1548 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, the method that pours in employing bag is carried out nodularization and rotten processing to molten iron, when molten iron is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 79.0% of molten iron gross mass 0.75% carries out inoculation.
(2) first at centrifuge upper skin of the roll high-speed steel, casting mold rotation speed n during cast skin of the roll 1determine as follows:
n 1 = 5520 &gamma; 1 &CenterDot; r 1 &CenterDot; &beta; 1 Formula (5)
In formula: n 1casting mold revolution during-cast skin of the roll high-speed steel, r/min, γ 1-high-speed steel liquation density, g/cm 3, r 1-body of roll inside radius, cm, β 1-adjust coefficient, high-speed steel is 1.4.
Skin of the roll high-speed steel pouring temperature is 1476 ℃, and after cast, adding immediately anti-oxidation flux, its addition is 1.5kg/m 2(body of roll inner surface).
(3) skin of the roll high-speed steel is poured after 12min, with contactless temperature-measuring instrument, measures body of roll internal surface temperature, when temperature is 1336 ℃, and cast roll intermediate layer graphitic steel.Casting mold rotation speed n while pouring into a mould roll intermediate layer graphitic steel 2determine as follows:
n 2 = 5520 &gamma; 2 &CenterDot; r 2 &CenterDot; &beta; 2 Formula (6)
In formula: n 2casting mold revolution during-cast roll intermediate layer graphitic steel, r/min, γ 2-roll intermediate layer graphitic steel liquation density, g/cm 3, r 2-roll intermediate layer graphitic steel inside radius, cm, β 2-adjust coefficient, roll intermediate layer graphitic steel is 1.5.
Roll intermediate layer graphitic steel pouring temperature is 1432 ℃, and its THICKNESS CONTROL, at 15mm, adds anti-oxidation flux immediately after cast, and its addition is 1.0kg/m 2(roll intermediate layer graphitic steel inner surface).
(4) roll intermediate layer graphitic steel is poured after 3min, with contactless temperature-measuring instrument, measures roll intermediate layer graphitic steel internal surface temperature, when temperature is 1269 ℃, and direct casting roller core molten ductile cast iron under static state, molten steel pouring temperature is 1385 ℃.
(5) roller core molten iron is poured after 24h, takes out compound high speed steel roll and enters burial pit, then carries out roughing.
(6) compound high speed steel roll after roughing is heated to 1050 ℃ with stove, insulation 3h, then air-cooled, finally at 530 ℃, carry out temper, tempering insulation time 10h, under same process, tempering is twice.Finally be refined to given size and precision.Fig. 1 fills out core schematic diagram after compound high speed steel roll mould assembling, and Fig. 2 is the compound high speed steel roll schematic diagram after fine finishining.The outer high-speed steel composition of compound high speed steel roll is in Table 1, and the intermediate layer graphitic steel composition of compound high speed steel roll is in Table 2, and the core magnesium iron composition of compound high speed steel roll is in Table 3, and the performance of compound high speed steel roll is in Table 4.
Embodiment 3
In 500 kilograms, 500 kilograms and 1.5 tons of electric induction furnaces, smelt outer high-speed steel, intermediate layer graphitic steel and core magnesium iron respectively, then in horizontal centrifuge upper skin of the roll and intermediate layer, direct casting roller core molten ductile cast iron under static state, the manufacturing technology steps of compound high speed steel roll is:
(1) smelting of outer high-speed steel, intermediate layer graphitic steel and core magnesium iron.The smelting process of its ectomesoderm high-speed steel is: 1. by steel scrap, carburant, ferrochrome, molybdenum-iron, ferro-niobium, metallic cobalt and the fusing of nickel plate Hybrid Heating, when liquid steel temperature rises to 1592 ℃, add successively calsibar alloy, aluminium, vanadium iron and ferro-boron, then be warming up to 1617 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth is crushed to the fritter of 12~15mm, is placed in casting ladle bottom, adopt and in bag, pour method to the molten steel processing of going bad.The smelting process of intermediate layer graphitic steel is: 1. by steel scrap, carburant and the fusing of copper coin Hybrid Heating, when liquid steel temperature rises to 1509 ℃, add successively ferrosilicon and calsibar alloy, then be warming up to 1538 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, adopt and in bag, to pour method to the molten steel processing of going bad, when molten steel is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 79.0% of molten steel gross mass 0.58% carries out inoculation.The smelting process of core magnesium iron is: 1. by steel scrap, carburant, molybdenum-iron and the fusing of nickel plate Hybrid Heating, when molten iron temperature rises to 1492 ℃, add successively ferromanganese, ferrosilicon and calsibar alloy, then be warming up to 1533 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, the method that pours in employing bag is carried out nodularization and rotten processing to molten iron, when molten iron is come out of the stove, adding is that the come out of the stove ferrosilicon of silicon content 75.4% of molten iron gross mass 0.78% carries out inoculation.
(2) first at centrifuge upper skin of the roll high-speed steel, casting mold rotation speed n during cast skin of the roll 1determine as follows:
n 1 = 5520 &gamma; 1 &CenterDot; r 1 &CenterDot; &beta; 1 Formula (7)
In formula: n 1casting mold revolution during-cast skin of the roll high-speed steel, r/min, γ 1-high-speed steel liquation density, g/cm 3, r 1-body of roll inside radius, cm, β 1-adjust coefficient, high-speed steel is 1.3.
Skin of the roll high-speed steel pouring temperature is 1470 ℃, and after cast, adding immediately anti-oxidation flux, its addition is 1.4kg/m 2(body of roll inner surface).
(3) skin of the roll high-speed steel is poured after 11min, with contactless temperature-measuring instrument, measures body of roll internal surface temperature, when temperature is 1320 ℃, and cast roll intermediate layer graphitic steel.Casting mold rotation speed n while pouring into a mould roll intermediate layer graphitic steel 2determine as follows:
n 2 = 5520 &gamma; 2 &CenterDot; r 2 &CenterDot; &beta; 2 Formula (8)
In formula: n 2casting mold revolution during-cast roll intermediate layer graphitic steel, r/min, γ 2-roll intermediate layer graphitic steel liquation density, g/cm 3, r 2-roll intermediate layer graphitic steel inside radius, cm, β 2-adjust coefficient, roll intermediate layer graphitic steel is 1.5.
Roll intermediate layer graphitic steel pouring temperature is 1442 ℃, and its THICKNESS CONTROL, at 13mm, adds anti-oxidation flux immediately after cast, and its addition is 1.1kg/m 2(roll intermediate layer graphitic steel inner surface).
(4) roll intermediate layer graphitic steel is poured after 4min, with contactless temperature-measuring instrument, measures roll intermediate layer graphitic steel internal surface temperature, when temperature is 1267 ℃, and direct casting roller core molten ductile cast iron under static state, molten steel pouring temperature is 1360 ℃.
(5) roller core molten iron is poured after 20h, takes out compound high speed steel roll and enters burial pit, then carries out roughing.
(6) compound high speed steel roll after roughing is heated to 1040 ℃ with stove, insulation 5h, then air-cooled, finally at 520 ℃, carry out temper, tempering insulation time 15h, under same process, tempering is twice.Finally be refined to given size and precision.Fig. 1 fills out core schematic diagram after compound high speed steel roll mould assembling, and Fig. 2 is the compound high speed steel roll schematic diagram after fine finishining.The outer high-speed steel composition of compound high speed steel roll is in Table 1, and the intermediate layer graphitic steel composition of compound high speed steel roll is in Table 2, and the core magnesium iron composition of compound high speed steel roll is in Table 3, and the performance of compound high speed steel roll is in Table 4.
The outer high-speed steel composition of table 1 compound high speed steel roll (mass fraction, %)
Table 2 compound high speed steel roll intermediate layer graphitic steel composition (mass fraction, %)
Table 3 compound high speed steel roll core magnesium iron composition (mass fraction, %)
Table 4 compound high speed steel roll performance
Compound high speed steel roll of the present invention is because of the buffer action of intermediate layer graphitic steel, guarantees that the elements such as boron in body of roll high-speed steel, chromium can not sneak in roller core magnesium iron, and roller core magnesium iron is kept under high strength prerequisite, also has higher percentage elongation and impact flexibility preferably.Compound high speed steel roll of the present invention has carried out commercial Application in hot strip rolling mill, result shows, not only roll surface hardness is high for roll of the present invention, wearability is good, and roller core intensity is high, good toughness, and the body of roll and roller core have been realized good metallurgical binding, and binder course intensity is high, guaranteed the safe handling of composite roll, extend 350~420% than high Ni-Cr infinite cold hardness cast iron roll its service life, promotes the use of roll of the present invention and have good economic benefit.

Claims (2)

1. a centrifugal casting quick-cutting steel composite roller, is characterized in that:
Described centrifugal casting quick-cutting steel composite roller is formed by centrifugal compound by outer high-speed steel, intermediate layer graphitic steel and core magnesium iron; The chemical composition mass percent of its outer high-speed steel is as follows: 1.45~1.55C, 0.4~0.6B, 10.5~11.5Cr, 3.5~4.5Mo, 0.6~0.8Co, 3.0~3.6V, 1.08~1.50Nb, and 0.3≤Nb/V≤0.5,1.0~1.2Ni, 0.04~0.08Mg, 0.04~0.08RE, 0.03~0.05Al, 0.03~0.05Ca, 0.03~0.05Ba, Si < 1.2, Mn < 0.5, S < 0.03, P < 0.04, all the other are Fe and inevitable trace impurity;
The chemical composition mass percent of its intermediate layer graphitic steel is as follows: 2.6~2.8C, 1.6~1.8Si, Mn < 0.4, S < 0.02, P < 0.07,0.03~0.06RE, 0.03~0.06Mg, 0.03~0.05Ca, 0.03~0.05Ba, 0.015~0.035Zr, 0.015~0.035Bi, 0.015~0.035Sb, 0.3~0.6Cu, all the other are Fe and inevitable trace impurity;
The chemical composition mass percent of its core magnesium iron is as follows: 3.1~3.4C, 1.8~2.2Si, 0.4~0.6Mn, S < 0.02, P < 0.07,0.15~0.35Mo, 0.35~0.50Ni, 0.015~0.035Zr, 0.015~0.035Bi, 0.015~0.035Sb, 0.03~0.05Ca, 0.03~0.05Ba, 0.040~0.068Mg, 0.020~0.045RE, all the other are Fe and inevitable trace impurity.
2. preparation a kind of centrifugal casting quick-cutting steel composite roller method as claimed in claim 1, is characterized in that, its step is as follows:
(1) the elder generation's outer high-speed steel of difference melting, intermediate layer graphitic steel and core magnesium iron in 3 electric furnaces, the smelting process of its ectomesoderm high-speed steel is: 1. by steel scrap, carburant, ferrochrome, molybdenum-iron, ferro-niobium, metallic cobalt and the fusing of nickel plate Hybrid Heating, when liquid steel temperature rises to 1580~1600 ℃, add successively calsibar alloy, aluminium, vanadium iron and ferro-boron, then be warming up to 1600~1630 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. magnesium-rare earth is crushed to the fritter of 12~15mm, be placed in casting ladle bottom, adopt and in bag, pour method to the molten steel processing of going bad, the smelting process of intermediate layer graphitic steel is: 1. by steel scrap, carburant and the fusing of copper coin Hybrid Heating, when liquid steel temperature rises to 1500~1520 ℃, add successively ferrosilicon and calsibar alloy, then be warming up to 1520~1550 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. by magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, adopt and in bag, to pour method to the molten steel processing of going bad, when molten steel is come out of the stove, adding quality is that the ferrosilicon that the siliceous quality of molten steel gross mass 0.50~0.65% is 75~80% of coming out of the stove carries out inoculation, the smelting process of core magnesium iron is: 1. by steel scrap, carburant, molybdenum-iron and the fusing of nickel plate Hybrid Heating, when molten iron temperature rises to 1480~1500 ℃, add successively ferromanganese, ferrosilicon and calsibar alloy, then be warming up to 1520~1550 ℃, after stokehold adjusting component is qualified, come out of the stove, 2. by magnesium-rare earth, metallic antimony, bismuth iron and ferrozirconium are crushed to the fritter of 8~12mm, be placed in casting ladle bottom, the method that pours in employing bag is carried out nodularization and rotten processing to molten iron, when molten iron is come out of the stove, adding quality is that the ferrosilicon that the siliceous quality of molten iron gross mass 0.75~0.80% is 75~80% of coming out of the stove carries out inoculation,
(2) first at centrifuge upper skin of the roll high-speed steel, casting mold rotation speed n during cast skin of the roll 1determine as follows:
formula (1)
In formula: n 1casting mold revolution during-cast skin of the roll high-speed steel, r/min, γ 1-high-speed steel liquation density, g/cm 3, r 1-body of roll inside radius, cm, β 1-adjust coefficient, high-speed steel is 1.2~1.4;
Skin of the roll high-speed steel pouring temperature is 1460~1480 ℃, adds immediately anti-oxidation flux after cast, and its addition is counted 1.3~1.5kg/m with body of roll inner surface 2;
(3) skin of the roll high-speed steel is poured after 8min~15min, with contactless temperature-measuring instrument, measures body of roll internal surface temperature, when temperature is 1300 ℃~1350 ℃, and cast roll intermediate layer graphitic steel; Casting mold rotation speed n while pouring into a mould roll intermediate layer graphitic steel 2determine as follows:
formula (2)
In formula: n 2casting mold revolution during-cast roll intermediate layer graphitic steel, r/min, γ 2-roll intermediate layer graphitic steel liquation density, g/cm 3, r 2-roll intermediate layer graphitic steel inside radius, cm, β 2-adjust coefficient, roll intermediate layer graphitic steel is 1.5~1.6;
Roll intermediate layer graphitic steel pouring temperature is 1430~1450 ℃, and its THICKNESS CONTROL, at 10~15mm, adds anti-oxidation flux immediately after cast, and its addition is counted 1.0~1.2kg/m with roll intermediate layer graphitic steel inner surface 2;
(4) roll intermediate layer graphitic steel is poured after 3min~6min, with contactless temperature-measuring instrument, measure roll intermediate layer graphitic steel internal surface temperature, when temperature is 1220 ℃~1280 ℃, direct casting roller core molten ductile cast iron under static state, molten steel pouring temperature is 1340 ℃~1390 ℃;
(5) roller core molten iron is poured after 12~24h, takes out compound high speed steel roll and enters burial pit, then carries out roughing;
(6) compound high speed steel roll after roughing is heated to 1020~1050 ℃ with stove, is incubated 3~6h, then air-cooled, finally at 500~530 ℃, carry out temper, tempering insulation time 10~18h, under same process, tempering is twice; Finally be refined to given size and precision.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1070433A (en) * 1991-09-12 1993-03-31 川崎制铁株式会社 The composite roll of outer material of roll and rotary casting
CN1424423A (en) * 2002-12-24 2003-06-18 西安交通大学 High-speed steel roll ring and its production
CN101240403A (en) * 2008-01-30 2008-08-13 中国科学院金属研究所 High-speed steel composite roller and casting method thereof
CN101530863A (en) * 2009-04-28 2009-09-16 江苏环立板带轧辊有限公司 Alloy cast steel roll and preparation method thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000160277A (en) * 2000-01-01 2000-06-13 Kubota Corp Composite roll
JP2007029968A (en) * 2005-07-25 2007-02-08 Jfe Steel Kk Method for manufacturing compound roll for hot rolling, and compound roll for hot rolling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1070433A (en) * 1991-09-12 1993-03-31 川崎制铁株式会社 The composite roll of outer material of roll and rotary casting
CN1424423A (en) * 2002-12-24 2003-06-18 西安交通大学 High-speed steel roll ring and its production
CN101240403A (en) * 2008-01-30 2008-08-13 中国科学院金属研究所 High-speed steel composite roller and casting method thereof
CN101530863A (en) * 2009-04-28 2009-09-16 江苏环立板带轧辊有限公司 Alloy cast steel roll and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
离心铸造含硼高速钢轧辊的研究;邹小伟等;《铸造技术》;20110931;第32卷(第09期);1313-1315 *
邹小伟等.离心铸造含硼高速钢轧辊的研究.《铸造技术》.2011,第32卷(第09期),

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