EP0347512A1 - Bimetall-Walze für Reduktions- und Dressierwalzen in einem Walzwerk - Google Patents
Bimetall-Walze für Reduktions- und Dressierwalzen in einem Walzwerk Download PDFInfo
- Publication number
- EP0347512A1 EP0347512A1 EP88830267A EP88830267A EP0347512A1 EP 0347512 A1 EP0347512 A1 EP 0347512A1 EP 88830267 A EP88830267 A EP 88830267A EP 88830267 A EP88830267 A EP 88830267A EP 0347512 A1 EP0347512 A1 EP 0347512A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- construction roll
- bimetal construction
- niobium
- titanium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000005096 rolling process Methods 0.000 title claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 17
- 239000000956 alloy Substances 0.000 claims abstract description 17
- 150000001247 metal acetylides Chemical class 0.000 claims abstract description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 9
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010936 titanium Substances 0.000 claims abstract description 8
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 238000005496 tempering Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims 3
- ZLANVVMKMCTKMT-UHFFFAOYSA-N methanidylidynevanadium(1+) Chemical class [V+]#[C-] ZLANVVMKMCTKMT-UHFFFAOYSA-N 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- 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
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
Definitions
- This invention relates to a bimetal construction roll for reducing and finishing stands in a rolling mill train, being of a type having a table formed from an alloy including 1% to 2% carbon and 8% to 16% chromium.
- a bimetal construction roll as indicated being characterized in that metallic carbides of at least one element from the group comprising vanadium, niobium, and titanium are present in said alloy.
- a bimetal construction roll of steel for reducing and finishing stands in a hot rolling mill train comprises a table formed from an alloy which includes 1% to 2% carbon and 8% to 16% chromium.
- the table is formed from an alloy steel, specifically an alloy including, additionally to iron, the following composition of alloying elements: C Si Mn Cr Ni Mo V 1.5 .8 .8 12 .5 3.5 1
- the table of the bimetallic roll for rolling mills according to this invention is subjected to the following heat treatment steps: austenitization at temperatures in the 950° to 1050°C range; hardening in either still or blown air, with the cooling rate set to suit the roll size, and a pause followed by homogenizing at about 500°C; and two-step tempering to convert the residual austenite, at temperatures in the 450° to 550°C range to be selected according to the hardness sought.
- Additional elements such as molybdenum, are provided in the alloy whose content is determined in a manner known per se contingent on individual specific requirements.
- the bimetal construction roll of this invention has tested successfully as regards wear, thermal fatigue, and the banding phenomenon, while affording the added advantage of retaining the table shape characteristics unaltered as a result of the presence of secondary and tertiary vanadium, niobium, and titanium metallic carbides.
- these carbides affect the table deformability at working temperatures and impart a high resistance to hot plastic state flowing, thereby preventing surface deformation of the table.
- the net result is that the bimetal construction rolls according to the invention yield high quality rolled products.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP88830267A EP0347512A1 (de) | 1988-06-23 | 1988-06-23 | Bimetall-Walze für Reduktions- und Dressierwalzen in einem Walzwerk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP88830267A EP0347512A1 (de) | 1988-06-23 | 1988-06-23 | Bimetall-Walze für Reduktions- und Dressierwalzen in einem Walzwerk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0347512A1 true EP0347512A1 (de) | 1989-12-27 |
Family
ID=8200640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88830267A Withdrawn EP0347512A1 (de) | 1988-06-23 | 1988-06-23 | Bimetall-Walze für Reduktions- und Dressierwalzen in einem Walzwerk |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0347512A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419973A (en) * | 1990-06-13 | 1995-05-30 | Nippon Steel Corporation | Composite roll for rolling and process for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725050A (en) * | 1970-03-02 | 1973-04-03 | Bethlehem Steel Corp | Cold work die steel |
| EP0051511A1 (de) * | 1980-10-31 | 1982-05-12 | UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE par abréviation "USINOR" | Gegossene Walze zum Kaltwalzen und Verfahren zu ihrer Herstellung |
-
1988
- 1988-06-23 EP EP88830267A patent/EP0347512A1/de not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3725050A (en) * | 1970-03-02 | 1973-04-03 | Bethlehem Steel Corp | Cold work die steel |
| EP0051511A1 (de) * | 1980-10-31 | 1982-05-12 | UNION SIDERURGIQUE DU NORD ET DE L'EST DE LA FRANCE par abréviation "USINOR" | Gegossene Walze zum Kaltwalzen und Verfahren zu ihrer Herstellung |
Non-Patent Citations (9)
| Title |
|---|
| CHEMICAL ABSTRACTS, vol. 104, no. 14, 7th April 1986, page 240, abstract no. 113711s, Columbus, Ohio, US; H. BERNS et al.: "New cold-working tool steels", & PROC. CONF. MATER. ENG., 2ND 1985, 71-7 * |
| CHEMICAL ABSTRACTS, vol. 105, no. 12, 22nd October 1986, page 217, abstract no. 100939t, Columbus, Ohio, US; H. BERNS et al.: "New cold-working tool steel", & MET. MATER. (INST. MET.) 1986, 2(7), 421-5 * |
| IRON AND STEEL ENGINEER, vol. 59, no. 3, March 1982, pages 53-58, Pittsburgh, Penns., US; J. DODD: "Recent advances in roll metallurgy and technology" * |
| METALS ABSTRACTS, vol. 13, no. 12, December 1980, page 176, column 1, abstract no. 56-0995, Foxton, Cambridge, GB; J. ZLATNIKOVA et al.: "Study on properties of high-carbon chromium, molybdenum and vanadium alloyed steel in conditions of surface hardening of rolls", & HUTN. LISTY. 1980, 35(3), 174-179 * |
| PATENT ABSTRACTS OF JAPAN, vol. 11, no. 192 (C-429)[2639], 19th June 1987; & JP-A-62 13 529 (KAWASAKI STEEL CORP.) 22-01-1987 * |
| PATENT ABSTRACTS OF JAPAN, vol. 11, no. 214 (C-434)[2661], 10th July 1987; & JP-A-62 30 854 (NIPPON STEEL CORP.) 09-02-1987 * |
| PATENT ABSTRACTS OF JAPAN, vol. 6, no. 122 (C-112)[1000], 7th July 1982; & JP-A-57 47 849 (KOBE SEIKOSHO K.K.) 18-03-1982 * |
| PATENT ABSTRACTS OF JAPAN, vol. 6, no. 197 (C-128)[1075], 6th October 1982; & JP-A-57 108 248 (KANTOU TOKUSHIYU SEIKOU K.K.) 06-07-1982 * |
| PATENT ABSTRACTS OF JAPAN, vol. 6, no. 35 (C-93)[913], 3rd March 1982; & JP-A-56 152 945 (SHIN NIPPON SEITETSU K.K) 26-11-1981 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419973A (en) * | 1990-06-13 | 1995-05-30 | Nippon Steel Corporation | Composite roll for rolling and process for producing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19900519 |
|
| 17Q | First examination report despatched |
Effective date: 19920130 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19931206 |