CN108018482A - A kind of high ferrochrome roll - Google Patents

A kind of high ferrochrome roll Download PDF

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Publication number
CN108018482A
CN108018482A CN201711370501.9A CN201711370501A CN108018482A CN 108018482 A CN108018482 A CN 108018482A CN 201711370501 A CN201711370501 A CN 201711370501A CN 108018482 A CN108018482 A CN 108018482A
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China
Prior art keywords
roll
casting
working lining
high ferrochrome
sandbox
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Granted
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CN201711370501.9A
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Chinese (zh)
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CN108018482B (en
Inventor
杜旭景
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Sinosteel Xingtai Machinery and Mill Roll Co Ltd
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Sinosteel Xingtai Machinery and Mill Roll Co Ltd
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Priority to CN201711370501.9A priority Critical patent/CN108018482B/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/10—Cast-iron alloys containing aluminium or silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/02—Centrifugal casting; Casting by using centrifugal force of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • C22C37/08—Cast-iron alloys containing chromium with nickel

Abstract

The invention discloses a kind of high ferrochrome roll, for large-scale wide and heavy plate mill, including roller core, roll neck and body of roll working lining, the chemical constituent and its mass percentage of body of roll working lining are C2.40 ~ 3.30%, Si0.60 ~ 1.00%, Mn0.90 ~ 1.20%, Cr15.00 ~ 18.00%, Ni1.10 ~ 1.70%, Mo0.80 ~ 1.40%, V0.10 ~ 0.60%, S≤0.10%, P≤0.05%, remaining is Fe and inevitable impurity.The present invention improves the mechanical performance of roll by adjusting heat treatment process, improves the wearability and millimeter amount of rolling of roll, extends the service life of roll.

Description

A kind of high ferrochrome roll
Technical field
The present invention relates to roll, especially a kind of high ferrochrome roll, for 5000mm grades of wide and heavy plate mills.
Background technology
Since eighties of last century the eighties, China has built up large-scale Wide and Thick Slabs more than more than ten bar 4000mm successively Rolling line, although the starting of large-scale Wide and Thick Slab is slower, with the rapid development of Chinese Steel Industry, large bridge, nuclear power station, large-scale water The needs in the fields such as dam, large-scale ships, Wide and Thick Slab have obtained wider application, and which also promotes the fast of Wide and Thick Slab production field Exhibition is hailed, China has been developed as Wide and Thick Slab production maximum in the world and consumption country.
The draught pressure of large-scale wide and heavy plate mill is big, maximum reachable 8000~12000t, while rolling side reciprocal back and forth Formula so that roll needs to bear higher alternate stress and larger mechanical shock.Four-high reversing mill is domestic and international at present Most widely used wide and heavy plate mill, mainly based on single chassis or Stand Mill four-high reversing mill, milling train generally uses High nickel chromium triangle indefinite chill centrifugal compound roll, but high nickel chromium triangle material wears no resistance, and roll shape holding capacity is poor, influences edition type control. There is investigation to represent that high chromium steel roller easily skids after being bitten in the use rolling of pony roughing mill at the same time, application effect is undesirable.
High ferrochrome roll is using carbon content as 2.3~3.3%, and the high chromium white wear-resistant cast iron of chromium content 12~22% is to roll Roller body of roll outer layer material, using spheroidal graphite cast-iron as core of the roll and roll neck material, the height produced using centrifugal compound pouring technology Alloy composite cast iron roller.Usually in all kinds of alloy iron rolls, as being set in body of roll outer tissue for molten iron separates out Carbide be Fe3C-type, hardness is 840~1100HV, and rich chromium cast iron, due to containing substantial amounts of chromium and nickel, molybdenum in molten iron Deng the carbide separated out in molten steel solidification in body of roll outer tissue is M7C3Type eutectic carbide, hardness up to 1500~ 2000HV, therefore, high ferrochrome roll have higher wearability and less hardness drop.
In recent years, the research both at home and abroad to rich chromium cast iron or cast steel with high chromium new material has remarkable progress, but is applied to The high ferrochrome roll of 5000mm grades of wide and heavy plate mills has no report.
The content of the invention
The technical problem to be solved in the invention is to provide a kind of high ferrochrome roll, can for large-scale wide and heavy plate mill Improve the mechanical performance of roll, improve the wearability and millimeter amount of rolling of roll, extend the service life of roll.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of high ferrochrome roll, for large-scale wide and heavy plate mill, including roller core, roll neck and body of roll working lining, body of roll work The chemical constituent and its mass percentage of layer are C2.40~3.30%, Si0.60~1.00%, Mn0.90~1.20%, Cr15.00~18.00%, Ni1.10~1.70%, Mo0.80~1.40%, V0.10~0.60%, S≤0.10%, P≤ 0.05%, remaining is Fe and inevitable impurity.
Technical solution of the present invention further improvement lies in that comprising the following steps：
A, smelt：The chemical constituent for pressing body of roll working lining carries out dispensing, is then smelted in induction furnace, smelting temperature For 1450~1550 DEG C；Roller core portion is smelted using the pig iron as raw material in blast furnace, and smelting temperature is 1450~1500 DEG C, before coming out of the stove Inovulant and nodulizer are added in molten iron；
B, centrifugal casting：Centrifugal casting body of roll working lining, the pouring temperature of molten iron is 1350~1400 DEG C；
C, mould assembling cast core and roll neck：The sandbox for being poured in body of roll working lining and the sandbox progress for pouring into a mould roll neck will be poured Merge；By the molten iron casting handled well in the sandbox to after merging, pouring temperature is 1380~1420 DEG C, obtains casting；
D, unpacking sand removal：Taken out in the sandbox of casting after merging after slow cooling, and clear up the molding sand of surface attachment；
E, it is heat-treated：Two-part annealing, then furnace cooling are carried out to casting.
Technical solution of the present invention further improvement lies in that：Inovulant is ferrosilicon and Si-Ba alloy, and inovulant accounts for molten iron Mass percent is 0.4~0.8%, and nodulizer is magnesium-rare earth, nodulizer account for the mass percent of molten iron for 1.1~ 1.3%.
Technical solution of the present invention further improvement lies in that：Rotating speed is 700~750r/min during centrifugation.
Technical solution of the present invention further improvement lies in that：Temperature retention time is 100~150h.
Technical solution of the present invention further improvement lies in that：The heating-up temperature of every section of annealing process is in two-part annealing 450~550 DEG C, soaking time is 25~30h.
Technical solution of the present invention further improvement lies in that：Roller surface hardness is HSD75~80.
Technical solution of the present invention further improvement lies in that：The large-scale wide and heavy plate mill rolls for 5000mm grades of Wide and Thick Slabs Machine.
By adopting the above-described technical solution, the technological progress that the present invention obtains is：
A kind of high ferrochrome roll of the present invention, improves the mechanical performance of roll, improves the wearability and millimeter of roll Amount of rolling, extends the service life of roll.
The present invention makes the alloy members such as C, Mn, Cr, Mo, V in roll by designing rational alloying component and casting technique Element can play more preferable synergistic effect, by appropriate heat treatment process so that roll is organized as martensite, retained austenite With carbide, matrix strength higher, simultaneously because high containing more Cr, Cr and C mass ratio, the carbide of formation be with M7C3Based on type, its microhardness is far above M3C-type, due to the raising of wear-resisting particle hardness so that the wearability of roll carries significantly It is high.In addition high chromium cast iron roll is in use, its surface can form one layer of fine and close Cr2O3Oxide-film, this oxidation membrane structure cause Close, strong adhesive force, hardness are high, protective effect are played to roll surface, so as to add the wearability of roll.Roll wearability carries Height, can be substantially improved the work efficiency of wide and heavy plate mill.
The present invention is produced using centrifugal casting by the way of, and the working lining and core of roll use different material and different Working lining and core, are then combined to together, are ensureing that top layer high rigidity height is resistance to by smelting process by the method for centrifugal casting While mill property, it ensure that the toughness of core of the roll, improve the surface quality and service life of roll.
When body of roll working lining is poured into a mould in the present invention, the rotating speed of centrifuge is controlled in 700~750r/min, can make body of roll work Make layer has higher consistency in casting process, adds the wearability of roll.
Temperature retention time of the medium casting of the present invention in sandbox is 100~150h, ensure that the uniform cooling of casting, avoids Cracking.
Soaking time of annealing in the present invention is 25~30h, provides the time of abundance for the precipitation of carbide, carbide exists Body of roll working lining plays the role of dispersion-strengtherning, further increases the hardness and wearability of body of roll working lining, improves roll Service life.Heat treatment uses retarded cooling process, and total heat-treatment time ensure that body of roll tissue change is uniform, without obvious up to 170~200h Transition zone, body surface hardness is uniform, and hardness drop is minimum in working lining, and roll wearability is good.
Brief description of the drawings
Fig. 1 is the metallographic structure testing result of certified products in embodiment 1；
Fig. 2 is the metallographic structure testing result of certified products in embodiment 2；
Fig. 3 is the metallographic structure testing result of certified products in embodiment 3；
Fig. 4 is the metallographic structure testing result of certified products in embodiment 4.
Embodiment
The present invention is described in further details with reference to embodiment：
A kind of high ferrochrome roll, its specific implementation step are as follows：
A, smelt：The chemical constituent for pressing body of roll working lining carries out dispensing, the chemical constituent and its quality hundred of body of roll working lining It is C 2.40~3.30%, Si 0.60~1.00%, Mn 0.90~1.20%, Cr 15.00~18.00%, Ni to divide content 1.10~1.70%, Mo 0.80~1.40%, V 0.10~0.60%, S≤0.10%, P≤0.05%, remaining is for Fe and not Impurity can be avoided, is then smelted in induction furnace, smelting temperature is 1450~1550 DEG C；Roller core portion using the pig iron as raw material, Smelted in blast furnace, smelting temperature is 1450~1500 DEG C, adds inovulant in molten iron before coming out of the stove and nodulizer, inovulant are Ferrosilicon and Si-Ba alloy, the weight of inovulant account for the 0.4~0.8% of weight of molten iron, and nodulizer is magnesium-rare earth, nodulizer Weight accounts for the 1.1~1.3% of weight of molten iron；
B, centrifugal casting：Centrifugal casting body of roll working lining, the pouring temperature of molten iron are 1350~1400 DEG C, and when cast centrifuges Machine rotating speed is 700~750r/min；
C, mould assembling cast core and roll neck：The sandbox for being poured in body of roll working lining and the sandbox progress for pouring into a mould roll neck will be poured Merge；By the molten iron casting handled well in the sandbox to after merging, pouring temperature is 1380~1420 DEG C, obtains casting；
D, shake out sand removal：Casting slow cooling in sandbox, temperature retention time are 100~150h, open sandbox and take out casting, cleaning The molding sand of cast(ing) surface attachment；
E, it is heat-treated：Two-part annealing is carried out to casting, the heating-up temperature of every section of annealing process in two-part annealing For 450~550 DEG C, soaking time is 25~30h and then furnace cooling.
The roller surface hardness being prepared is HSD75~80, applied to 5000mm grades of wide and heavy plate mills.
Embodiment 1
The composition design target of body of roll working lining is C 2.40~2.60%, Si 0.60~0.70%, Mn in the present embodiment 1.10~1.20%, Cr 15.00~16.00%, Ni 1.50~1.70%, Mo 1.20~1.40%, V 0.30~ 0.50%, S≤0.05%, P≤0.05%, remaining is Fe and inevitable impurity.Manufacture method is as follows：
A, smelt：The chemical constituent for pressing body of roll working lining carries out dispensing, is then smelted in induction furnace, smelting temperature For 1450 DEG C；
Core of the roll is smelted using the pig iron as raw material in blast furnace, and smelting temperature is 1450 DEG C, is added before coming out of the stove in molten iron Inovulant and nodulizer, inovulant are ferrosilicon and Si-Ba alloy, and the weight of inovulant accounts for the 0.4% of weight of molten iron, and nodulizer is Magnesium-rare earth, the weight of nodulizer account for the 1.1% of weight of molten iron；
B, centrifugal casting：Centrifugal casting body of roll working lining, the pouring temperature of molten iron are 1350 DEG C, centrifuge speed during cast For 700r/min；
C, mould assembling cast core and roll neck：The sandbox for being poured in body of roll working lining and the sandbox progress for pouring into a mould roll neck will be poured Merge；By the molten iron casting handled well in the sandbox to after merging, pouring temperature is 1380 DEG C；
D, shake out sand removal：After slow cooling 100h, open sandbox in sandbox after casting and take out casting, cleaning cast(ing) surface attachment Molding sand；
E, it is heat-treated：To casting carry out two-part annealing, 450 DEG C, soaking time 30h of every section of annealing temperature, so Furnace cooling afterwards.
The chemical composition of molten iron in step A is analyzed, obtains the chemical composition and quality percentage of refined molten iron Content is C 2.56%, Si 0.69%, Mn 1.05%, Cr 15.00%, Ni 1.68%, Mo 1.37%, V 0.31%, S 0.015%, P 0.035%, remaining is Fe and inevitable impurity.
After testing, final obtained roller surface hardness is HSD75~79, and hardness drop testing result is within 3HSD.
Qualified product examine is surveyed in the implementation case and is found, metallographic structure is as shown in Figure 1.
Embodiment 2~4 has the body of roll components of working layer identical with above-described embodiment 1, except that the matter of each component Measure percentage, each composition design target as shown in Table 1 below, manufacturer used by embodiment 2~4 and above-described embodiment 1 Method step is identical, and different technological parameters is as shown in manufacture method part in table 1 below.
Table 1
After testing, the chemical composition mass percentage for the molten iron refined in each embodiment and final obtained roll table Surface hardness is as shown in table 2：
Table 2
Example 2 Example 3 Example 4
C (wt%) 2.54 2.75 3.15
Si (wt%) 0.66 0.78 0.85
Mn (wt%) 1.15 1.01 0.98
Cr (wt%) 15.40 16.50 17.65
Ni (wt%) 1.17 1.35 1.69
Mo (wt%) 1.19 0.88 1.45
V (wt%) 0.23 0.45 0.50
S (wt%) 0.016 0.014 0.013
P (wt%) 0.035 0.030 0.034
Hardness (HSD) 75~79 77~79 78~80
Embodiment 1 is contrasted with embodiment 2, shortens Shake-out Time, advantageously reduces the content of pearlite in alloy in as-cast structure, From metallographic structure as can be seen that the pearlite in as cast condition of product metallographic structure shown in embodiment 1 significantly reduces, organized after heat more equal Even densification.
Embodiment 1~4 is respectively applied to different rolling lines, using effect compared with the high nickel chromium triangle material roll that the same period uses, Millimeter milimeter number greatly improves, specific as shown in table 3：
Table 3
Example 1 Example 2 Example 3 Example 4
High nickel chromium triangle millimeter milimeter number 43 56 58 50
High ferrochrome millimeter milimeter number 83 96 106 120
Effect multiple 1.93 1.71 1.83 2.40

Claims (8)

  1. A kind of 1. high ferrochrome roll, for large-scale wide and heavy plate mill, including roller core, roll neck and body of roll working lining, it is characterised in that： The chemical constituent and its mass percentage of the body of roll working lining are C2.40 ~ 3.30%, Si0.60 ~ 1.00%, Mn0.90 ~ 1.20%, Cr15.00 ~ 18.00%, Ni1.10 ~ 1.70%, Mo0.80 ~ 1.40%, V0.10 ~ 0.60%, S≤0.10%, P≤0.05%, Remaining is Fe and inevitable impurity.
  2. 2. a kind of high ferrochrome roll according to claim 1, it is characterised in that manufacture method comprises the following steps：
    A, smelt：The chemical constituent for pressing body of roll working lining carries out dispensing, is then smelted in induction furnace, smelting temperature is 1450~1550℃；Roller core portion is smelted using the pig iron as raw material in blast furnace, and smelting temperature is 1450 ~ 1500 DEG C, in iron before coming out of the stove Inovulant and nodulizer are added in water；
    B, centrifugal casting：Centrifugal casting body of roll working lining, the pouring temperature of molten iron is 1350 ~ 1400 DEG C；
    C, mould assembling cast core and roll neck：The sandbox for being poured in body of roll working lining will be poured to be closed with being used to pour into a mould the sandbox of roll neck And；By the molten iron casting handled well in the sandbox to after merging, pouring temperature is 1380 ~ 1420 DEG C, obtains casting；
    D, unpacking sand removal：Taken out in the sandbox of casting after merging after slow cooling, and clear up the molding sand of surface attachment；
    E, it is heat-treated：Two-part annealing, then furnace cooling are carried out to casting.
  3. A kind of 3. high ferrochrome roll according to claim 2, it is characterised in that：Inovulant is ferrosilicon and Si-Ba alloy, pregnant Educate agent account for molten iron mass percent be 0.4 ~ 0.8%, nodulizer is magnesium-rare earth, and nodulizer accounts for the mass percent of molten iron For 1.1 ~ 1.3%.
  4. A kind of 4. high ferrochrome roll according to claim 2, it is characterised in that：Rotating speed is 700 ~ 750r/min during centrifugation.
  5. A kind of 5. high ferrochrome roll according to claim 2, it is characterised in that：Temperature retention time is 100 ~ 150h.
  6. A kind of 6. high ferrochrome roll according to claim 2, it is characterised in that：Every section of annealing process in two-part annealing Heating-up temperature is 450 ~ 550 DEG C, and soaking time is 25 ~ 30h.
  7. A kind of 7. high ferrochrome roll according to claim 1, it is characterised in that：Roller surface hardness is HSD75 ~ 80.
  8. A kind of 8. high ferrochrome roll according to claim 1, it is characterised in that：The large-scale wide and heavy plate mill is 5000mm Level wide and heavy plate mill.
CN201711370501.9A 2017-12-19 2017-12-19 High-chromium iron roller Active CN108018482B (en)

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Application Number Priority Date Filing Date Title
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108588322A (en) * 2018-08-06 2018-09-28 龚晓俅 A kind of manufacturing method of high carbon ferro-chrome ball
CN109226259A (en) * 2018-09-12 2019-01-18 南京钢铁股份有限公司 A method of improving hot rolling pipeline steel oxidation iron sheet integrality
CN109536825A (en) * 2018-12-28 2019-03-29 中钢集团邢台机械轧辊有限公司 A kind of cast iron quality planisher working roll and its manufacturing method
CN110508786A (en) * 2019-09-24 2019-11-29 济南市白象科技发展有限公司 A kind of composite roller
CN111101058A (en) * 2019-12-26 2020-05-05 中钢集团邢台机械轧辊有限公司 High-wear-resistance graphite steel edge rolling roller of section steel-rail beam rolling mill and manufacturing method thereof
CN111922321A (en) * 2020-10-14 2020-11-13 常州凯达重工科技有限公司 High-chromium cast iron roller and manufacturing method of bottom pouring type high-chromium cast iron roller
CN114351032A (en) * 2021-12-21 2022-04-15 中钢集团邢台机械轧辊有限公司 Preparation method of high-material vertical roll

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JPH10121186A (en) * 1996-08-23 1998-05-12 Kawasaki Steel Corp Centrifugally cast sleeve roll and its production
CN105274425A (en) * 2015-10-28 2016-01-27 中钢集团邢台机械轧辊有限公司 High-alloy roller for front stage of hot continuous finish rolling and preparation method thereof
CN106244908A (en) * 2016-08-26 2016-12-21 中钢集团邢台机械轧辊有限公司 A kind of hot continuous rolling finishing roll and manufacture method thereof
CN106636877A (en) * 2016-12-29 2017-05-10 常州凯达重工科技有限公司 High chromium cast iron composite casting section steel product roller and preparation method thereof
CN106834900A (en) * 2017-02-23 2017-06-13 中钢集团邢台机械轧辊有限公司 A kind of centrifugal compound ferrochrome roll high and its manufacture method

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Publication number Priority date Publication date Assignee Title
JPS5376119A (en) * 1976-12-17 1978-07-06 Hitachi Metals Ltd Highhhardness highhchrome roll and method of making same
JPH10121186A (en) * 1996-08-23 1998-05-12 Kawasaki Steel Corp Centrifugally cast sleeve roll and its production
CN105274425A (en) * 2015-10-28 2016-01-27 中钢集团邢台机械轧辊有限公司 High-alloy roller for front stage of hot continuous finish rolling and preparation method thereof
CN106244908A (en) * 2016-08-26 2016-12-21 中钢集团邢台机械轧辊有限公司 A kind of hot continuous rolling finishing roll and manufacture method thereof
CN106636877A (en) * 2016-12-29 2017-05-10 常州凯达重工科技有限公司 High chromium cast iron composite casting section steel product roller and preparation method thereof
CN106834900A (en) * 2017-02-23 2017-06-13 中钢集团邢台机械轧辊有限公司 A kind of centrifugal compound ferrochrome roll high and its manufacture method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108588322A (en) * 2018-08-06 2018-09-28 龚晓俅 A kind of manufacturing method of high carbon ferro-chrome ball
CN109226259A (en) * 2018-09-12 2019-01-18 南京钢铁股份有限公司 A method of improving hot rolling pipeline steel oxidation iron sheet integrality
CN109536825A (en) * 2018-12-28 2019-03-29 中钢集团邢台机械轧辊有限公司 A kind of cast iron quality planisher working roll and its manufacturing method
CN109536825B (en) * 2018-12-28 2021-03-30 中钢集团邢台机械轧辊有限公司 Cast iron material temper mill working roll and manufacturing method thereof
CN110508786A (en) * 2019-09-24 2019-11-29 济南市白象科技发展有限公司 A kind of composite roller
CN111101058A (en) * 2019-12-26 2020-05-05 中钢集团邢台机械轧辊有限公司 High-wear-resistance graphite steel edge rolling roller of section steel-rail beam rolling mill and manufacturing method thereof
CN111922321A (en) * 2020-10-14 2020-11-13 常州凯达重工科技有限公司 High-chromium cast iron roller and manufacturing method of bottom pouring type high-chromium cast iron roller
CN114351032A (en) * 2021-12-21 2022-04-15 中钢集团邢台机械轧辊有限公司 Preparation method of high-material vertical roll
CN114351032B (en) * 2021-12-21 2023-12-12 中钢集团邢台机械轧辊有限公司 Preparation method of high-material vertical roll

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