EP1033191A1 - Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren - Google Patents

Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren Download PDF

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Publication number: EP1033191A1
Authority: EP; European Patent Office
Prior art keywords: weight; liquid metal; liquid; heavy; poids
Prior art date: 1999-03-04
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP99400531A

Other languages

English (en)

French (fr)

Inventor

Jean-Claude Werquin

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Individual

Original Assignee

Individual

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1999-03-04

Filing date

1999-03-04

Publication date

2000-09-06

1999-03-04 Application filed by Individual filed Critical Individual

1999-03-04 Priority to EP99400531A priority Critical patent/EP1033191A1/de

2000-09-06 Publication of EP1033191A1 publication Critical patent/EP1033191A1/de

Status Withdrawn legal-status Critical Current

Links

238000004519 manufacturing process Methods 0.000 title claims abstract description 8
238000005097 cold rolling Methods 0.000 title description 3
238000005098 hot rolling Methods 0.000 title description 2
150000001875 compounds Chemical class 0.000 title 1
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 64
229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 37
150000004767 nitrides Chemical class 0.000 claims abstract description 37
230000004907 flux Effects 0.000 claims abstract description 27
229910052751 metal Inorganic materials 0.000 claims abstract description 26
229910052757 nitrogen Inorganic materials 0.000 claims abstract description 26
239000002184 metal Substances 0.000 claims abstract description 25
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 22
229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 20
239000007788 liquid Substances 0.000 claims abstract description 18
239000011651 chromium Substances 0.000 claims abstract description 17
238000005204 segregation Methods 0.000 claims abstract description 17
239000010955 niobium Substances 0.000 claims abstract description 14
229910052758 niobium Inorganic materials 0.000 claims abstract description 12
229910052715 tantalum Inorganic materials 0.000 claims abstract description 12
239000012535 impurity Substances 0.000 claims abstract description 11
229910052742 iron Inorganic materials 0.000 claims abstract description 10
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 10
229910052684 Cerium Inorganic materials 0.000 claims abstract description 9
GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims abstract description 9
229910052735 hafnium Inorganic materials 0.000 claims abstract description 9
238000005275 alloying Methods 0.000 claims abstract description 8
230000005484 gravity Effects 0.000 claims abstract description 8
VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims abstract description 8
230000008018 melting Effects 0.000 claims abstract description 7
238000002844 melting Methods 0.000 claims abstract description 7
229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
229910001018 Cast iron Inorganic materials 0.000 claims abstract description 5
QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 5
WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 5
229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
239000010937 tungsten Substances 0.000 claims abstract description 5
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 4
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 4
229910017052 cobalt Inorganic materials 0.000 claims abstract description 4
239000010941 cobalt Substances 0.000 claims abstract description 4
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 4
229910052759 nickel Inorganic materials 0.000 claims abstract description 4
229910052804 chromium Inorganic materials 0.000 claims abstract description 3
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 3
229910052710 silicon Inorganic materials 0.000 claims abstract description 3
239000010703 silicon Substances 0.000 claims abstract description 3
229910045601 alloy Inorganic materials 0.000 claims description 37
239000000956 alloy Substances 0.000 claims description 37
238000000034 method Methods 0.000 claims description 19
229910052720 vanadium Inorganic materials 0.000 claims description 18
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 18
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
238000005096 rolling process Methods 0.000 claims description 15
239000000203 mixture Substances 0.000 claims description 14
229910052799 carbon Inorganic materials 0.000 claims description 13
239000002893 slag Substances 0.000 claims description 9
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 8
229910052750 molybdenum Inorganic materials 0.000 claims description 7
239000011733 molybdenum Substances 0.000 claims description 7
230000004927 fusion Effects 0.000 claims description 5
239000002131 composite material Substances 0.000 claims description 4
238000005119 centrifugation Methods 0.000 claims description 3
229910000831 Steel Inorganic materials 0.000 claims description 2
230000003111 delayed effect Effects 0.000 claims description 2
239000010959 steel Substances 0.000 claims description 2
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 5
CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 4
235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 2
235000011941 Tilia x europaea Nutrition 0.000 abstract description 2
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 2
239000004571 lime Substances 0.000 abstract description 2
239000000395 magnesium oxide Substances 0.000 abstract description 2
239000000377 silicon dioxide Substances 0.000 abstract description 2
150000001247 metal acetylides Chemical class 0.000 description 15
239000011572 manganese Substances 0.000 description 14
230000008569 process Effects 0.000 description 12
230000015572 biosynthetic process Effects 0.000 description 10
238000005266 casting Methods 0.000 description 10
239000007787 solid Substances 0.000 description 8
238000009750 centrifugal casting Methods 0.000 description 6
238000007792 addition Methods 0.000 description 5
229910052782 aluminium Inorganic materials 0.000 description 5
230000007246 mechanism Effects 0.000 description 5
XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
230000008901 benefit Effects 0.000 description 4
239000011248 coating agent Substances 0.000 description 4
238000000576 coating method Methods 0.000 description 4
230000000052 comparative effect Effects 0.000 description 4
239000000839 emulsion Substances 0.000 description 4
238000011081 inoculation Methods 0.000 description 4
229910052719 titanium Inorganic materials 0.000 description 4
239000010936 titanium Substances 0.000 description 4
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
229910001566 austenite Inorganic materials 0.000 description 3
239000003795 chemical substances by application Substances 0.000 description 3
238000004945 emulsification Methods 0.000 description 3
229910002804 graphite Inorganic materials 0.000 description 3
239000010439 graphite Substances 0.000 description 3
150000002739 metals Chemical class 0.000 description 3
238000013508 migration Methods 0.000 description 3
230000005012 migration Effects 0.000 description 3
238000001556 precipitation Methods 0.000 description 3
229910000975 Carbon steel Inorganic materials 0.000 description 2
229910052776 Thorium Inorganic materials 0.000 description 2
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
229910052770 Uranium Inorganic materials 0.000 description 2
239000011149 active material Substances 0.000 description 2
239000000853 adhesive Substances 0.000 description 2
230000001070 adhesive effect Effects 0.000 description 2
229910052786 argon Inorganic materials 0.000 description 2
229910052796 boron Inorganic materials 0.000 description 2
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210000001787 dendrite Anatomy 0.000 description 2
238000011161 development Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
229940082150 encore Drugs 0.000 description 2
239000007791 liquid phase Substances 0.000 description 2
239000012071 phase Substances 0.000 description 2
239000000843 powder Substances 0.000 description 2
230000002028 premature Effects 0.000 description 2
238000011160 research Methods 0.000 description 2
239000004094 surface-active agent Substances 0.000 description 2
ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
229910001141 Ductile iron Inorganic materials 0.000 description 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
241000237502 Ostreidae Species 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 1
230000005587 bubbling Effects 0.000 description 1
229910052791 calcium Inorganic materials 0.000 description 1
239000011575 calcium Substances 0.000 description 1
230000002860 competitive effect Effects 0.000 description 1
230000001143 conditioned effect Effects 0.000 description 1
239000013078 crystal Substances 0.000 description 1
238000002425 crystallisation Methods 0.000 description 1
230000008025 crystallization Effects 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000008034 disappearance Effects 0.000 description 1
239000006185 dispersion Substances 0.000 description 1
230000009977 dual effect Effects 0.000 description 1
229910001325 element alloy Inorganic materials 0.000 description 1
230000008030 elimination Effects 0.000 description 1
238000003379 elimination reaction Methods 0.000 description 1
230000001804 emulsifying effect Effects 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
230000005496 eutectics Effects 0.000 description 1
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238000012423 maintenance Methods 0.000 description 1
239000000155 melt Substances 0.000 description 1
238000005272 metallurgy Methods 0.000 description 1
ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 description 1
238000004452 microanalysis Methods 0.000 description 1
239000008267 milk Substances 0.000 description 1
235000013336 milk Nutrition 0.000 description 1
210000004080 milk Anatomy 0.000 description 1
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238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
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238000007254 oxidation reaction Methods 0.000 description 1
235000020636 oyster Nutrition 0.000 description 1
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239000006104 solid solution Substances 0.000 description 1
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239000002436 steel type Substances 0.000 description 1
238000003756 stirring Methods 0.000 description 1
238000012546 transfer Methods 0.000 description 1
238000011282 treatment Methods 0.000 description 1
JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
230000003313 weakening effect Effects 0.000 description 1
238000005303 weighing Methods 0.000 description 1

Classifications

- 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
- 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/56—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.7% by weight of carbon

Definitions

the present invention relates to the cylinders of bimetallic or composite work intended to equip roughing and finishing rolling mills for trains hot strips, cold rolling mills, and also long product rolling mills, particularly wire and bar mills.
the second process, used worldwide is the centrifugal casting process with its variants horizontal, vertical or inclined. This process is more economic than the previous one, much more productive, but the products obtained do not have the same quality level due to limitations imposed by the process itself.
French Patent No. 2,625,226 also teaches that such gravity segregation can occur in alloys with a high Vanadium content, below of the eutectic composition when the Carbon and the Vanadium exceed certain limits. We can explain today these limits by the presence more or less large nitrides of the above mentioned elements and present as residual impurities.
Temperature austenitization of these heavy parts that are rolling mill cylinders is relatively limited, in particular by the nodular cast iron core, and only the vanadium can both form carbides MC, enter in M2C carbide by promoting its formation in detriment of the more massive and fragile M6C carbide and enter austenite solution at temperatures between 1050 ° and 1150 °.
Niobium not having succeeded in "weighing down” enough Vanadium carbides, we then tried to use other elements not only much more heavy but also having a very high free energy carbide formation negative. Among the elements likely to fulfill this dual role, while being also very hungry for nitrogen, we knew the elements following: Tantalum, Hafnium then Thorium and uranium.
Tantalum and Hafnium have already been used in as MC carbide generating elements for the manufacture of high-speed steel cylinders. The contents were then relatively small and the process used, the so-called “continuous coating by casting ”. (Patents JP 69666/87 & EP A 10309587)
This flux is usually added to the liquid metal, either in the solid state, in powder form, during the casting, either on the metal pocket where it melts before to be sunk.
the first observation was to observe, using the microanalysis, the presence in significant quantity of nitrogen and the element very greedy for nitrogen in the emulsion of flux.
nitrides therefore form within the metal liquid but are more or less wetted by the flux composed in particular of silicon oxide, calcium and aluminum.
Soluble both in metal and in flux they are surfactants. As such they are therefore responsible for the milk emulsion - liquid metal formed during intense brewing when setting places liquid metal against the shell during hydrodynamic regime. These solid nitrides increase as strongly the viscosity of the slag and make difficult its elimination by the centripetal force during of the casting of the second metal. But the emulsion itself, consists of drops of flux surrounded by metal liquid. This solidifies, which then makes impossible centripetal migration of the flow. A diaper formed of a mixture of metal and flux, very fragile, then intervenes at the interface of the two metals in weakening their bond.
the invention relates to a hot or cold rolling mill cylinder comprising a cast iron core and an external zone or envelope, in high-speed steel, characterized in that the external zone contains 2.3 to 3.5% by weight of carbon, from 6 to 8% in weight of vanadium and 3 to 9% by weight of molybdenum and does not exhibit gravity segregation due to the use of alloying elements forming nitrides heavy.
the metallic element forming nitrides can be one at least the following: tantalum, hafnium, zirconium, niobium.
the invention also relates to a method of manufacture of a rolling mill cylinder in which elaborates in a melting furnace and a metal is poured liquid constituted by a high-speed steel to constitute the cylinder casing, characterized in that deoxidizes the liquid metal and then introduces into the deoxidized liquid metal, at least one alloying element forming a heavy nitride and that after sinking the liquid metal, we pour a flow in the liquid state on the liquid metal delayed from the end from pouring the liquid metal.
Alloys of the high-speed steel type to constitute the envelope of the composite rolling mill cylinders were cast in a centrifugal casting plant horizontal by introducing a flow containing in particular silica, lime, magnesia and alumina and having a melting point of 1090 ° C.
This flux could be introduced as a solid powder during the pouring or pouring liquid after pouring from of a small graphite crucible. In this case, the slag was introduced 20 seconds after the end of casting.
the thickness of all these envelopes was about 50 mm.C
Alloy 1 does not segregate naturally. A added 1.1% tantalum was made 15 minutes before the pricked to empty the oven and after deoxidation cerium. The nitrogen content measured before adding was 350 ppm. The centrifuged envelope has no internal segregation, The structure has no carbide network, and no visible dendrite. In however, the flow present at the interface is emulsified with metal.
Alloy 2 is an alloy which naturally segregates into because of its high Vanadium content. Despite strong add Niobium, about 15 minutes before pricking and after deoxidation with Cerium, the centrifuged envelope has a segregated area of 7 mm, a structure dendritic and a fairly pronounced carbide network.
liquid Alloy 3 is an alloy naturally segregating due to the high contents in carbon and vanadium. With an addition of 1.6% of Hafnium, 15 minutes before pricking and after deoxidation in Cerium, the centrifuged envelope has no area segregated, neither emulsified slag, nor carbide network.
Alloy 4 is not a segregating alloy naturally. With an addition of 0.60% Tantalum, about 15 minutes before pricking and after deoxidation Cerium, the centrifuged envelope shows a segregation 5 mm with slightly emulsified flux. The network of carbides is clearly visible.
the flow introduced is liquid
Alloy 5 is a highly segregating alloy naturally. With an addition of 1.5% of Tantalum, after deoxidation in Cerium and about 15 minutes before pitted, the centrifuged envelope shows no segregation, no dendritic structure. A few carbides of type M6C slightly remain at the seals of a network that you can barely guess. There is no emulsified flow.
alloys A & B received no additions from Tantalum, Hafnium or Niobium. They were nevertheless cast like the previous alloys. Alloy A does has no segregation, alloy B has a 3 mm segregation. Both structures show dendrites and a network of carbides although the grades in Molybdenum and Tungsten are low. The two centrifuged envelopes show no flow emulsified.
the high-speed steel external zone must include for reasons given above from 2.3 to 4.5% by weight of carbon, 6 to 8% vanadium and 3 to 9% molybdenum and at least one element of the alloy forming a nitride heavy do not have, in their external area, segregation by gravity due to the element forming a heavy nitride.
the cylinders of the invention are distinguished from cylinders according to the prior art described above.
the element forming a heavy nitride can be chosen by apart from the elements indicated rather high as preferential.

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Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Manufacture And Refinement Of Metals (AREA)

EP99400531A 1999-03-04 1999-03-04 Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren Withdrawn EP1033191A1 (de)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
EP99400531A EP1033191A1 (de)	1999-03-04	1999-03-04	Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP99400531A EP1033191A1 (de)	1999-03-04	1999-03-04	Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren

Publications (1)

Publication Number	Publication Date
EP1033191A1 true EP1033191A1 (de)	2000-09-06

Family

ID=8241897

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99400531A Withdrawn EP1033191A1 (de)	1999-03-04	1999-03-04	Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren

Country Status (1)

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EP (1)	EP1033191A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN106513619A (zh) *	2016-12-02	2017-03-22	机械科学研究总院青岛分院	一种常压下离心铸造高氮奥氏体不锈钢钢管的工艺
CN106825480A (zh) *	2017-02-23	2017-06-13	中钢集团邢台机械轧辊有限公司	一种浇注离心轧辊用的保护渣的加入方法
WO2018107314A1 (zh) *	2016-12-12	2018-06-21	机械科学研究总院青岛分院有限公司	一种常压下离心铸造高氮奥氏体不锈钢钢管的工艺
CN115780775A (zh) *	2022-10-10	2023-03-14	中钢集团邢台机械轧辊有限公司	一种轧制型钢用深孔型高速钢轧辊的制造方法

Citations (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3455372A (en) *	1967-03-08	1969-07-15	Hidesuke Yamamoto	Continuous padding method using high frequency current
US4116684A (en) *	1976-03-17	1978-09-26	Hitachi Metals, Ltd.	High speed tool steel having high toughness
EP0309587A1 (de) *	1987-03-24	1989-04-05	Hitachi Metals, Ltd.	Verschleissfeste verbundwalze und verfahren zu ihrer herstellung
FR2625226A1 (fr) *	1987-12-23	1989-06-30	Chavanne Ketin	Cylindre de travail composite bimetallique
WO1995024513A1 (en) *	1994-03-11	1995-09-14	The Davy Roll Company Limited	Steel alloys and rolling mill rolls produced therefrom
EP0430241B1 (de) *	1989-11-30	1996-01-10	Hitachi Metals, Ltd.	Verschleissfeste Verbundwalze
EP0698670A1 (de) *	1994-06-29	1996-02-28	Kawasaki Steel Corporation	Material für die Aussenschicht einer Warmumformwalze und Verfahren zur Herstellung einer Warmumformwalze
EP0560210B1 (de) *	1992-03-06	1996-12-18	Hitachi Metals, Ltd.	Verbundwalze und Verfahren zu ihrer Herstellung
EP0562114B1 (de) *	1991-09-12	1998-11-04	Kawasaki Steel Corporation	Material für aussenschicht einer umformwalze und durch schleuderguss hergestellte verbundwalze
FR2767725A1 (fr) *	1997-09-01	1999-03-05	Jean Claude Werquin	Cylindre de travail composite pour le laminage a chaud & a froid en acier rapide a haut carbone et haut vanadium et son procede de fabrication par coulee centrifuge

1999
- 1999-03-04 EP EP99400531A patent/EP1033191A1/de not_active Withdrawn

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3455372A (en) *	1967-03-08	1969-07-15	Hidesuke Yamamoto	Continuous padding method using high frequency current
US4116684A (en) *	1976-03-17	1978-09-26	Hitachi Metals, Ltd.	High speed tool steel having high toughness
EP0309587A1 (de) *	1987-03-24	1989-04-05	Hitachi Metals, Ltd.	Verschleissfeste verbundwalze und verfahren zu ihrer herstellung
EP0309587B1 (de) *	1987-03-24	1993-07-28	Hitachi Metals, Ltd.	Verschleissfeste verbundwalze und verfahren zu ihrer herstellung
FR2625226A1 (fr) *	1987-12-23	1989-06-30	Chavanne Ketin	Cylindre de travail composite bimetallique
EP0430241B1 (de) *	1989-11-30	1996-01-10	Hitachi Metals, Ltd.	Verschleissfeste Verbundwalze
EP0562114B1 (de) *	1991-09-12	1998-11-04	Kawasaki Steel Corporation	Material für aussenschicht einer umformwalze und durch schleuderguss hergestellte verbundwalze
EP0560210B1 (de) *	1992-03-06	1996-12-18	Hitachi Metals, Ltd.	Verbundwalze und Verfahren zu ihrer Herstellung
WO1995024513A1 (en) *	1994-03-11	1995-09-14	The Davy Roll Company Limited	Steel alloys and rolling mill rolls produced therefrom
EP0698670A1 (de) *	1994-06-29	1996-02-28	Kawasaki Steel Corporation	Material für die Aussenschicht einer Warmumformwalze und Verfahren zur Herstellung einer Warmumformwalze
FR2767725A1 (fr) *	1997-09-01	1999-03-05	Jean Claude Werquin	Cylindre de travail composite pour le laminage a chaud & a froid en acier rapide a haut carbone et haut vanadium et son procede de fabrication par coulee centrifuge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN106513619A (zh) *	2016-12-02	2017-03-22	机械科学研究总院青岛分院	一种常压下离心铸造高氮奥氏体不锈钢钢管的工艺
WO2018107314A1 (zh) *	2016-12-12	2018-06-21	机械科学研究总院青岛分院有限公司	一种常压下离心铸造高氮奥氏体不锈钢钢管的工艺
CN106825480A (zh) *	2017-02-23	2017-06-13	中钢集团邢台机械轧辊有限公司	一种浇注离心轧辊用的保护渣的加入方法
CN106825480B (zh) *	2017-02-23	2019-06-21	中钢集团邢台机械轧辊有限公司	一种浇注离心轧辊用的保护渣的加入方法
CN115780775A (zh) *	2022-10-10	2023-03-14	中钢集团邢台机械轧辊有限公司	一种轧制型钢用深孔型高速钢轧辊的制造方法

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Publication	Publication Date	Title
JP5423930B2 (ja)	2014-02-19	遠心鋳造製複合圧延ロール及びその製造方法
CA2249464C (fr)	2004-12-14	Alliage thixotrope aluminium-silicium-cuivre pour mise en forme a l'etat semi-solide
EP1067203A1 (de)	2001-01-10	Verfahren zum Herstellen von Eisen-Kohlenstoff-Mangan-Legierungbändern und also hergestellte Bändern
US20030111206A1 (en)	2003-06-19	Casting steel strip
EP1323837B1 (de)	2011-10-05	Herstellungsverfahren von Stahlprodukt aus Kohlenstoffstahl insbesondere für Galvanisieren.
US4357394A (en)	1982-11-02	Centrifugal casting
EP0190089B1 (de)	1989-01-18	Verfahren zum Behandeln von flüssigen Metallen mittels eines kalziumenthaltenden Fülldrahtes
EP1033191A1 (de)	2000-09-06	Verbundwalze zum Warm- oder Kaltwalzen und Herstellungsverfahren
US20040177945A1 (en)	2004-09-16	Casting steel strip
US4377196A (en)	1983-03-22	Method of centrifugally casting a metal tube
FR2604185A1 (fr)	1988-03-25	Alliages-maitres aluminium-titane contenant des additions d'un troisieme element, utiles pour l'affinage du grain de l'aluminium
FR2767725A1 (fr)	1999-03-05	Cylindre de travail composite pour le laminage a chaud & a froid en acier rapide a haut carbone et haut vanadium et son procede de fabrication par coulee centrifuge
EP0342082B1 (de)	1993-07-21	Verfahren zur Kühlung eines metallischen Stranggussproduktes
FR2658838A1 (fr)	1991-08-30	Rouleau compose resistant a l'usure.
EP1097753B1 (de)	2004-01-28	Neues vertikales Zentrifugalgiessverfahren für Walzen mit fester, nicht poröser Verbindung zwischen der äusseren Schicht aus Schnellstahl und dem Kern aus Sphäroguss
CA1177678A (fr)	1984-11-13	Procede pour ajuster la composition d'un alliage de zinc pour galvanisation au trempe, par ajout de compositions metalliques concentrees en additif d'alliage, et compositions d'addition
FR2765819A1 (fr)	1999-01-15	Procede de coulee centrifuge verticale a hydrodynamique amelioree et cylindres de laminage composites, a structure equiaxes, en comportant application
CA1181223A (en)	1985-01-22	Centrifugal casting
BE467794A (de)
BE637826A (de)
BE432657A (de)
FR2642347A1 (fr)	1990-08-03	Procede de coulee en continu d'aciers effervescents ou faiblement desoxydes, et poudre de couverture de lingotiere pour sa mise en oeuvre
BE519503A (de)
BE562298A (de)
BE903805A (fr)	1986-06-05	Procede pour la coulee continue des metaux.