US3640114A - Method of hot rolling metal - Google Patents
Method of hot rolling metal Download PDFInfo
- Publication number
- US3640114A US3640114A US835809A US3640114DA US3640114A US 3640114 A US3640114 A US 3640114A US 835809 A US835809 A US 835809A US 3640114D A US3640114D A US 3640114DA US 3640114 A US3640114 A US 3640114A
- Authority
- US
- United States
- Prior art keywords
- metal
- roll
- chromium
- hot
- molybdenum
- 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.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 66
- 239000002184 metal Substances 0.000 title claims abstract description 66
- 238000005098 hot rolling Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 39
- 239000011651 chromium Substances 0.000 claims abstract description 39
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 34
- 239000011733 molybdenum Substances 0.000 claims abstract description 34
- 238000005336 cracking Methods 0.000 claims abstract description 33
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 30
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 30
- 239000010937 tungsten Substances 0.000 claims abstract description 30
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 28
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 12
- 239000011572 manganese Substances 0.000 claims abstract description 12
- 229910000599 Cr alloy Inorganic materials 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000788 chromium alloy Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 11
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 11
- 239000010703 silicon Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 8
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000009835 boiling Methods 0.000 claims abstract description 7
- 239000002826 coolant Substances 0.000 claims abstract description 6
- 238000005242 forging Methods 0.000 claims description 14
- 230000008021 deposition Effects 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 31
- 239000000956 alloy Substances 0.000 description 31
- 235000016768 molybdenum Nutrition 0.000 description 26
- 239000000463 material Substances 0.000 description 10
- 238000005275 alloying Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 238000004458 analytical method Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000007792 addition Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 238000010791 quenching Methods 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 238000005552 hardfacing Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910002065 alloy metal Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000001627 detrimental effect Effects 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- 230000001976 improved effect Effects 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000010137 moulding (plastic) Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000967 As alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- -1 carbon chromium molybdenum tungsten vanadium manganese silicon Chemical compound 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- QFXZANXYUCUTQH-UHFFFAOYSA-N ethynol Chemical group OC#C QFXZANXYUCUTQH-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007542 hardness measurement Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- QVRVXSZKCXFBTE-UHFFFAOYSA-N n-[4-(6,7-dimethoxy-3,4-dihydro-1h-isoquinolin-2-yl)butyl]-2-(2-fluoroethoxy)-5-methylbenzamide Chemical compound C1C=2C=C(OC)C(OC)=CC=2CCN1CCCCNC(=O)C1=CC(C)=CC=C1OCCF QVRVXSZKCXFBTE-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005492 weld surfacing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
- B23K35/308—Fe as the principal constituent with Cr as next major constituent
-
- 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
-
- 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
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium 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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
Definitions
- the roll may 3 3 12/1966 comprisea" ferrous metal body to which the metal contacting surface of chromium Ohtake ..;.75/l26 C mill is preferably iron or steel above its critical temperature.
- This invention relates to a method of hot rolling metal and particularly to operations performed on metal in its hot forgeable temperature ranges, particularly in a hot rolling mill.
- the invention is concerned with the drastic temperatureextremes, necessarily cyclic in nature, to which certain working parts of the mill, especially rolls, are subjected and the damage. which thermal shocks caused by the cyclic temperature changes do to the working parts of the mill and to improvement of the performance and efficiency of the mill which can be effected by importantly, in accordance with the invention, improving the resistance of such working parts of the mill to damage by thermal shock.
- Rolls Contact with hot metal being rolled in a hot rolling mill, is made principally by rolls. These may be the rolls which transport the hot metal and on which it may rest for a period while awaiting the next processing step or the work rolls which produce plastic deformation by applying squeezing pressure to the metal.
- heat is rapidly transferred to the surface of the roll by conduction and radiation. In some locations even convection may contribute to the transfer but in any case the roll surface receives an intense local heating.
- a roll surface is cooled to prevent too much build up of heat in the roll which would reduce its strength and cause the sticking of hot metal on subsequent contacts.
- Roll cooling is normally done by water sprays although there are a few locations in a mill where a blast of air at ambient temperature may ,be adequate.
- the rate of formation and propagation of fire cracks in a mill roll varies with the hot working temperature of the metal being processed; steel is commonly handled above its critical temperature in the range of l,450 to 2,200'F., nickel at about 1,200 to 2,300 F., copper at about l,200 to l,6.00 F. and aluminum at about 900 to 950 F. Because of the large tonnage rolled and the high-hot working temperature the rolling of steel is responsible for most fire crack damag to mill rolls. While the fire cracking of rolls cannot be stopped it can be slowed down as this invention teaches.
- the conduct of the rolling operation can thereby be greatly improved by reducing the rate at which fire cracking spreads into extensive and insupportable damage whereby the mill product becomes increasingly marked and the hazard of roll breakage increases with the deepening cracks which act as fatigue notches.
- mill operation becomes a gamble of additional tonnage before a roll change against breakage in the mill.
- Roll failure by wear is bad enough but wear can be observed and followed and a replacement part scheduled for a time when a mill is down.
- Roll failure by breakage during mill operation is the most expensive type of failure and minimization of the risk of roll breakage isof the utmost importance to mill operations.
- a welded roll must be used substantially as deposited since the finished bearings at either end will not tolerate exposure to a heat treatment such as the annealing treatment commonly used on a new roll body while still in the unfinished condition.
- a roll produced by applying a weld deposit to a supporting structure such as a used roll body represents the more restricted situation and a material which performs satisfactorily in the weld deposited form without benefit of heat treatment can therefore also be employed as a new roll material where heat treatments can be added.
- tungsten in an amount of about 1.3 to 2 percent as an aid to grain refinement, hot hardness and tempering resistance and it has been stated that when dissolved in the matrix tungsten is extremely reluctant to precipitate on tempering, and when it does, at temperatures of 950 to l,l00 F., probably in the fonn of W C, it accounts for the phenomenon of secondary hardness and, in the high-speed steel tools, for red hardness. It has also been said that because molybdenum has a smaller atomic weight than tungsten it will produce twice as many atoms for alloying in the steel; thus l percent molybdenum can be substituted for 1.6 to 2 percent tungsten.
- molybdenum also imparts high-temperature strength to steels when present in amounts as low as about 0.5 percent, that molybdenum when present alone, however, promotes decarburization and that small amounts of chromium minimize this effect. It has still further been said that vanadium present in virtually all the chromium-molybdenum steels is highly effective in promoting hot hardness at l,l00 F. and that 0.5 percent vanadium is as effective as l.5 percent vanadium.
- chromium itself is well known. It imparts oxidation resistance to steel and greatly increases its hardenability. in conjunction with molybdenum an optimum increase in high-temperature strength is accomplished at about 2 percent chromium.
- alloys No. 2, No. 3, No. 6 and No. 8 l have achieved in a single weld deposit both unprecedented resistance to fire cracking and a good level of the properties which produce resistance to wear at elevated temperatures.
- Alloy No. l l illustrates the help which can be gained from use of low levels of vanadium in amounts up to 1 percent in-a composition which otherwise would be unsatisfactory in hot hardness or softening resistance.
- alloy No. ll the addition of about 0.7 percent molybdenum and 0.3 percent vanadium increased the hardenability, hot hardness and softening resistance to an acceptable level in the presence of only 2 percent chromium, it is believed more conservative to take 3 percent chromium as the minimum which should be used.
- Alloy No. 9 an alloy with about 7 percent chromium and about 1.5 percent molybdenum, has satisfactory hot hardness with marginal softening resistance. It may be noted that molybdenum above about 4 percent did cause premature failure by fire cracking due to a grain boundary phase. To insure against the possibility of a detrimental grain boundary condition, the upper limit for molybdenum is established at 2 percent.
- Alloy No. 8 which had a chromium and tungsten total of about 9 percent, exhibits good fire cracking properties and excellent elevated temperature behavior. There is danger of the formation of intergranular phases in deposits with too high an alloy content as exemplified by alloy no. 10. Therefore, a value of 9 percent of the total of chromium, molybdenum, tungsten and vanadium is established as a maximum.
- Certain residual elements normal to ferrous hard-facing deposits may also be present; the range of silicon is commonly from 0.2 percent to 2 percent and of manganese from 0.3 percent to 3 percent. Phosphorus and sulphur may be present in typically commercial amounts. The balance is substantially iron.
- a wear resistant hard-facing weld deposit resistant to fire cracking should contain vanadium (l-l 0- 0.5 about I manganese 0.3-3 0.3-2.5 about 2 silicon 0.2-2 0.22 about and with the sum of the percentages of chromium, molyb denum, tungsten and vanadium between about 4 and about 9, the balance being substantially iron.
- Chromium steels with alloy metal contents equal to those of my chromium steels but with carbon contents over 0.20 pcr cent and therefore unsuitable for rolling mill use have been used for many tool steels, for welding electrodes and also for steel mill rolls.
- Chromium steels with analyses which fall within the limits of my invention have been made previously. They have been shown to have properties and have been demonstrated as useful for purposes none of which remotely anticipates or foreshadows their useful employment as a working surface ofa roll in the hot rolling of metal.
- a steel within the analysis which I require for rolling mill use has been proposed as a valve surfacing material resistant to the corrosive attack of hot refinery oil.
- This is a very special type of corrosive attack by the sulfur and other compounds present in oil.
- the service is continuous and the temperature is maintained constant by the hot oil.
- This service is not characterized by the rapid and extreme temperature cycles which by alternate heating and quenching produce fire cracking by fatigue in rolling mill rolls.
- the property of resistance to corrosion by hot oil teaches nothing about resistance to fire cracking under violent thermal cycles.
- a method for improving the performance and efficiency of a hot rolling mill which accepts metal at hot forging tcmperature, moves it through the mill and plastically reduces the metal, the method consisting of the steps of providing the mill with a roll having a metal contacting surface of chromium alloy steel having the following composition:
- the sum of the percentages of chromium, molybdenum, tungsten and vanadium being between about 4 and about 9, the balance being substantially iron, whereby to simultaneously greatly improve the resistance to thermal fatigue cracking while maintaining a good level of resistance to wear of the roll at hot forging temperature engaging the metal at hot forging temperature by such roll and applying to the roll a coolant at a temperature below the boiling point ofwater so that the roll is subjected to repeated heating and cooling cycles.
- a method for improving the performance and efficiency of a hot rolling mill which accepts metal at hot forging temperature, moves it through the mill and plastically reduces the metal.
- the method consisting of the steps of providing the mill with a roll having a ferrous metal core and a metal contacting surface of chromium alloy steel having the following composition:
- a method for improving the performance and efficiency of a hot rolling mill which accepts metal at hot forging temperature, moves it through the mill and plastically reduces the metal, the method consisting of the steps of providing the mill with a roll having a ferrous metal core and a weld deposited metal contacting surface of chromium alloy steel having the following composition:
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65636567A | 1967-07-27 | 1967-07-27 | |
| US83580969A | 1969-06-23 | 1969-06-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3640114A true US3640114A (en) | 1972-02-08 |
Family
ID=27097182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US835809A Expired - Lifetime US3640114A (en) | 1967-07-27 | 1969-06-23 | Method of hot rolling metal |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3640114A (enrdf_load_stackoverflow) |
| BE (1) | BE718540A (enrdf_load_stackoverflow) |
| DE (1) | DE1758703B1 (enrdf_load_stackoverflow) |
| FR (1) | FR1574542A (enrdf_load_stackoverflow) |
| GB (1) | GB1223164A (enrdf_load_stackoverflow) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918928A (en) * | 1970-09-14 | 1975-11-11 | Hitachi Metals Ltd | Shank or back material for high speed steel tools |
| DE2810186A1 (de) * | 1977-03-11 | 1978-09-14 | Southwire Co | Walzwerk und walze zum warmwalzen von nichteisenmetallen sowie verfahren zur herstellung der walze |
| US4853181A (en) * | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
| US5032356A (en) * | 1988-10-21 | 1991-07-16 | Hitachi Metals, Ltd. | High fatigue strength metal band saw backing material |
| US5595613A (en) * | 1994-03-09 | 1997-01-21 | Nissan Motor Co., Ltd. | Steel for gear, gear superior in strength of tooth surface and method for producing same |
| RU2173228C1 (ru) * | 1999-12-22 | 2001-09-10 | Ветер Владимир Владимирович | Прокатный валок |
| EP2455180A1 (de) * | 2010-11-17 | 2012-05-23 | Cetto Maschinenbau Gmbh & Co. Kg. | Eisen-Chrom-Molybdän-Mangan Legierung, eine Verwendung dieser Legierung, ein Verfahren zur Erstellung dieser Legierung, eine Rolle für eine Walzanlage mit einer Oberfläche aus dieser Legierung sowie eine Rolle für eine Walzanlage mit einer Oberfläche, die mit einem Verfahren zur Erstellung dieser Legierung erstellt ist |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52116716A (en) * | 1976-03-27 | 1977-09-30 | Kubota Ltd | Roller for transporting |
| JPS52122218A (en) * | 1976-04-06 | 1977-10-14 | Kubota Ltd | Roller for conveyance |
| FR2467030A1 (fr) * | 1979-10-09 | 1981-04-17 | Pont A Mousson | Table bimetallique en acier pour rouleau de coulee continue et son procede de fabrication |
| FR2469221A1 (fr) * | 1979-11-13 | 1981-05-22 | Usinor | Cylindre de laminoir pour train a chaud |
| FR2619734A1 (fr) * | 1987-08-26 | 1989-03-03 | Uralsky Politekhn Inst | Procede de renovation des surfaces des articles d'acier |
| US5081760A (en) * | 1989-06-26 | 1992-01-21 | Hitachi, Ltd. | Work roll for metal rolling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1648471A (en) * | 1923-03-05 | 1927-11-08 | United Eng Foundry Co | Casting |
| US2021783A (en) * | 1931-11-20 | 1935-11-19 | Timken Roller Bearing Co | Alloy steel and articles made therefrom |
| US2051358A (en) * | 1934-08-06 | 1936-08-18 | John A Zublin | Alloy |
| US2449806A (en) * | 1945-06-12 | 1948-09-21 | Carpenter Steel Co | Cold hobbable steel |
| US2923619A (en) * | 1958-02-20 | 1960-02-02 | Carpenter Steel Co | Wear resistant steel |
| US3290183A (en) * | 1961-08-29 | 1966-12-06 | Yawata Iron & Steel Co | Method of producing anticorrosion high tensile strength rail |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB776482A (en) * | 1954-02-11 | 1957-06-05 | Boehler & Co Ag Geb | Improvements in and relating to rolling-mill rolls for hot-rolling |
-
1968
- 1968-07-24 FR FR1574542D patent/FR1574542A/fr not_active Expired
- 1968-07-25 GB GB35665/68A patent/GB1223164A/en not_active Expired
- 1968-07-25 DE DE19681758703 patent/DE1758703B1/de active Pending
- 1968-07-25 BE BE718540D patent/BE718540A/xx not_active IP Right Cessation
-
1969
- 1969-06-23 US US835809A patent/US3640114A/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1648471A (en) * | 1923-03-05 | 1927-11-08 | United Eng Foundry Co | Casting |
| US2021783A (en) * | 1931-11-20 | 1935-11-19 | Timken Roller Bearing Co | Alloy steel and articles made therefrom |
| US2051358A (en) * | 1934-08-06 | 1936-08-18 | John A Zublin | Alloy |
| US2449806A (en) * | 1945-06-12 | 1948-09-21 | Carpenter Steel Co | Cold hobbable steel |
| US2923619A (en) * | 1958-02-20 | 1960-02-02 | Carpenter Steel Co | Wear resistant steel |
| US3290183A (en) * | 1961-08-29 | 1966-12-06 | Yawata Iron & Steel Co | Method of producing anticorrosion high tensile strength rail |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918928A (en) * | 1970-09-14 | 1975-11-11 | Hitachi Metals Ltd | Shank or back material for high speed steel tools |
| DE2810186A1 (de) * | 1977-03-11 | 1978-09-14 | Southwire Co | Walzwerk und walze zum warmwalzen von nichteisenmetallen sowie verfahren zur herstellung der walze |
| US4853181A (en) * | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
| US5032356A (en) * | 1988-10-21 | 1991-07-16 | Hitachi Metals, Ltd. | High fatigue strength metal band saw backing material |
| US5595613A (en) * | 1994-03-09 | 1997-01-21 | Nissan Motor Co., Ltd. | Steel for gear, gear superior in strength of tooth surface and method for producing same |
| RU2173228C1 (ru) * | 1999-12-22 | 2001-09-10 | Ветер Владимир Владимирович | Прокатный валок |
| EP2455180A1 (de) * | 2010-11-17 | 2012-05-23 | Cetto Maschinenbau Gmbh & Co. Kg. | Eisen-Chrom-Molybdän-Mangan Legierung, eine Verwendung dieser Legierung, ein Verfahren zur Erstellung dieser Legierung, eine Rolle für eine Walzanlage mit einer Oberfläche aus dieser Legierung sowie eine Rolle für eine Walzanlage mit einer Oberfläche, die mit einem Verfahren zur Erstellung dieser Legierung erstellt ist |
Also Published As
| Publication number | Publication date |
|---|---|
| BE718540A (enrdf_load_stackoverflow) | 1969-01-27 |
| FR1574542A (enrdf_load_stackoverflow) | 1969-07-11 |
| DE1758703B1 (de) | 1972-05-31 |
| GB1223164A (en) | 1971-02-24 |
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