CN1064827A - Contain roll of sintered hard alloy and cast iron and preparation method thereof - Google Patents
Contain roll of sintered hard alloy and cast iron and preparation method thereof Download PDFInfo
- Publication number
- CN1064827A CN1064827A CN92101435A CN92101435A CN1064827A CN 1064827 A CN1064827 A CN 1064827A CN 92101435 A CN92101435 A CN 92101435A CN 92101435 A CN92101435 A CN 92101435A CN 1064827 A CN1064827 A CN 1064827A
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- China
- Prior art keywords
- roll
- casting
- cast
- alloy
- cast iron
- 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.)
- Granted
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 42
- 239000000956 alloy Substances 0.000 title claims abstract description 42
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 16
- 229910001566 austenite Inorganic materials 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000717 retained effect Effects 0.000 claims abstract description 8
- 238000005097 cold rolling Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 238000005098 hot rolling Methods 0.000 claims abstract description 7
- 229910001563 bainite Inorganic materials 0.000 claims abstract description 6
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 6
- 239000010439 graphite Substances 0.000 claims abstract description 6
- 230000008602 contraction Effects 0.000 claims abstract description 5
- 238000009750 centrifugal casting Methods 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 4
- 229910000640 Fe alloy Inorganic materials 0.000 abstract description 3
- 238000009987 spinning Methods 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 229910001141 Ductile iron Inorganic materials 0.000 description 6
- 238000000465 moulding Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000003110 molding sand Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910001126 Compacted graphite iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- APGROBRHKCQTIA-UHFFFAOYSA-N [Mg].[Si].[Fe] Chemical compound [Mg].[Si].[Fe] APGROBRHKCQTIA-UHFFFAOYSA-N 0.000 description 1
- -1 and at this place Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- ATTFYOXEMHAYAX-UHFFFAOYSA-N magnesium nickel Chemical compound [Mg].[Ni] ATTFYOXEMHAYAX-UHFFFAOYSA-N 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
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
-
- 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
- B21B27/02—Shape or construction of rolls
- B21B27/03—Sleeved rolls
- B21B27/035—Rolls for bars, rods, rounds, tubes, wire or the like
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Heat Treatment Of Articles (AREA)
- Tires In General (AREA)
Abstract
The present invention relates to a kind of roll that contains sintered hard alloy and cast iron and preparation method thereof.This roll can be used for hot rolling or cold rolling.The body of roll comprises one or several cemented carbide rings of roll body that is cast into the alloy of iron by centre spinning method.This casting alloy mainly comprises graphite cast iron, contains retained austenite after casting.In order to reduce or to eliminate fully because cast iron that the cooling of casting back causes and the local contraction between the sintered hard alloy, this retained austenite is when once (or repeatedly) heat treatment step subsequently, and changing into wholly or in part under the situation that volume increases mainly is bainite.The core of roll body can be made of another selective alloy.
Description
It is basic the present invention relates to by centre spinning method one or several cemented carbide rings is cast into iron, and being preferably with cast iron is the casting alloy of base.The product that generates only is one to be made, and has the composite roll of metallurgical binding between sintered hard alloy and cast iron.
Being used for hot rolling or the cold rolling composite roll that contains sintered hard alloy comprises with various connectors and locking device and is connected one or several cemented carbide rings on (driving) axle.To change apart from a kind of method that is sent to the sintered hard alloy roll from driving shaft and to be to use keyway or other transmission groove or the drive lugs made from cemented carbide rings fully.But sintered hard alloy is a kind of as if having the fragile material that limits tensile strength and specific notch sensitivity in the conveyer in the turning in above-mentioned commentaries on classics, can not work satisfactorily based on these conventional methods of attachment.The another kind of method that transmits the commentaries on classics distance is the frictional force by cemented carbide rings inner surface place.Yet, cause the increase of the tangent line tension in the cemented carbide rings in this lip-deep radial load, and directly locate to have maximum within it.These tensile stresses are added in other tensile stress that roll produces in use.
By with the shell casting of the alloy of iron on cemented carbide rings, obtain being used for hot rolling or cold rolling composite roll, wherein transmit to change and can be arranged on the cast iron, for example referring to Swedish patent NO.7010170-5(publication number 371114 apart from required device).But this is a simple problem anything but.Because during cooling the shrinkage ratio cemented carbide rings of shell is big, produce on the sintered hard alloy power to internal direction, cause axial tensile stress at the cemented carbide rings outer surface, these stress vertically act on rolling during the micro-crack that produces of roller surface.Under the influence of these tensile stresses, the expansion of the degree of depth of micro-crack may cause fracture of roller or need a large amount of trimmings, and the result has limited total rolling power of roll.
A solution to this problem is disclosed in Swedish patent application NO.8804503-4, according to this application, one or several cemented carbide rings is cast in the shell of alloy of iron, wherein casting alloy mainly comprises graphite cast iron, this cast iron contains the retained austenite of morphological element after casting, be preferably 15-20%(weight), in order to reduce or to eliminate fully because cast iron that the cooling of casting back causes and the local contraction between the sintered hard alloy, mainly be bainite during at heat treatment step once or several times subsequently under the situation that volume increases with all or part of the changing into of austenite.
The method of above-mentioned patent application only can prepare collar earlier, then by connector on driving shaft and locking device these rings is combined into complete roll.Promptly be used in transmit to change apart from essential connector cylinder iron parts make, but still have the restriction of size, from but to transmitting a kind of restriction of changeing distance.In addition, the wearing face of roll (body of roll) is restricted dimensionally.According to the method described above or other is existing, apart from the sintered hard alloy system that transmits the connector operation, because the required connector and the space of locking device, people can not be provided with cemented carbide rings fully freely on the body of roll by certain type commentaries on classics.Thereby desiring to be used for rolling surface is restricted significantly.
Centrifugal casting is the known technology of the common rotationally symmetric body of preparation.The centrifugal force that this technology utilizes the rotating cylindrical mold to be reached is thrown to the mold wall with motlten metal, and at this place, metal is solidified into required shape under pressure.This technology is generally used for preparing pipe, liner, axle bush etc., but also is used to prepare roll.For example, by the known a kind of composite roll that is used for hot-rolling mill or cold-rolling mill of Swedish patent application NO.8603987-2, this roll has the shell of centrifugal casting outer wear layer or high alloy cast steel and the core of vermicular iron, spheroidal graphite cast-iron or normal steel casting.
According to the present invention, now provide only with a composite roll of making by means of centrifugal casting, this roll has metallurgical the connection between sintered hard alloy and cast iron, the body of roll herein can and need one or several cemented carbide rings of equipment according to actual rolling condition.The free degree in this design can only just can reach by the present invention.
Fig. 1,2 and 3 shows some alternative embodiment.Fig. 1 shows the roll of a kind of spheroidal graphite cast-iron (1), wherein is cast into a cemented carbide rings (2).
Fig. 2 shows the roll of a kind of spheroidal graphite cast-iron (1), wherein has been cast into four cemented carbide rings (2).
Fig. 3 shows a kind of roll, and this roll has the cemented carbide rings (2) of four castings in spheroidal graphite cast-iron (1), and has the core and the axle journal of another material.
Cemented carbide rings in molding sand or the moulding of a plurality of rings must make by this way, so that molten cast iron does not arrive the outer surface of sintered hard alloy. This is that the present invention can confirm.
The outer surface of cemented carbide rings (or a plurality of ring) has constituted the body of roll of prepared composite roll.The experience that is cast into collar according to the prior art for preparing of patent application NO.8804503-4 shows that a small amount of molten cast iron of infiltrating the cemented carbide rings outer surface causes in the surface quality of infiltrating sintered hard alloy under the surface and worsens.By the outer surface of machine cut one or several millimeters sintered hard alloys, can eliminate this surface deterioration.In order successfully to prepare composite roll of the present invention, must avoid above-mentioned this infiltration, and this also is possible.
In order to reach metallurgical binding best between sintered hard alloy and the cast iron, must in groove, use highly overheated iron, in conjunction with the amount of the mold filler of being controlled and predetermined rotary speed, to reach equilibrium heating and fusing, i.e. this part and the cast iron metallurgical binding of cemented carbide rings part (the not moulding in molding sand of this part) superficial layer.
Composite roll of the present invention through necessary heat treatment and be machined into net shape and size after, comprise a complete roll or collar.This composite roll has been eliminated aforesaid, and existing cemented carbide rings desires will change reliably the difficulty apart from be sent to the sintered hard alloy part by driving shaft.
According to the present invention, sintered hard alloy is cast into to have and is adjusted to Swedish patent NO.8601289-7(publication number 399911) graphite cast iron basically of described carbon equivalent (Ceqv.) component.Also to consider to sintered hard alloy for best metallurgical binding, its intensity, toughness and hardness, commentaries on classics apart from the whole needs that transmit.And machinability is selected the component of cast iron.By adding iron-silicon-magnesium and/or nickel-magnesium, making this casting alloy content of magnesium is 0.02-0.10%, is preferably 0.04-0.07%(weight).By using iron-silicon inoculation, making the silicone content of this cast iron is 1.9-2.8%, is preferably 2.1-2.5%(weight).Obtain having the spheroidal graphite cast-iron of the globular graphite of dispersion thus.This spheroidal graphite cast-iron has well balanced hardness-toughness-intensity to application.Brinell hardness is 250-300 under heat-treat condition.In addition, this cast iron will generate the alloying composition by alloying because of austenite.Be preferably nickel content 3-10%, be more preferred from 4-8%(weight), the result forms a certain amount of retained austenite, is 5-30% after casting promptly, is preferably 10-25%, or is more preferred from 15-20%(weight).By the heat treatment of one or several steps, can be under the situation that volume increases, the retained austenite of appropriate amount is transformed into other morphological element, for example bainite.Adjusted volume increases like this, promptly makes the various contractions that take place the composite roll from the cooling period of casting temperature all or part ofly to be eliminated.Adjust this heat-treating methods at the grade of sintered hard alloy, the component of cast iron and the application of roll.Heat treatment comprises and is heated to and remains on temperature 800-1000 ℃, is cooled to and remains on temperature 400-550 ℃, is cooled to room temperature again.
In a kind of alternative embodiment, roll comprises (or a plurality of) carbide ring and only is the shell of above-mentioned cast iron, and roll core and roll neck are cast by another casting alloy by centrifugal or static casting.
In another alternative embodiment, roll comprises the cemented carbide rings (or a plurality of ring) that annular outer cover is advanced in only casting.
According to the present invention, a kind of hot rolling or cold rolling usefulness also are provided, complete, the roll manufacture method of sintered hard alloy equipment.According to this method, at least one cemented carbide rings is placed in the mold of centrifugal casting apparatus, bore area and side surface thereof at ring between sintered hard alloy and cast iron freely form contact.Rotate this mold and when reach suitable speed, the molten cast iron that will have said components and suitable temperature enters downwards rotates in the mold, and at this moment molten iron is thrown to the mold wall and solidified under pressure.After being cooled to room temperature,, heat-treat by above-mentioned then the roll cleaning.
According to a kind of alternative method, a cemented carbide rings (or a plurality of ring) is cast into the shell that only is made of above-mentioned cast iron, cast core and roll neck by centrifugal or static casting by another casting alloy then.
According to another alternative embodiment, cemented carbide rings only is cast into ring-shaped shell by centrifugal casting.
Embodiment
With a kind of sintered hard alloy moulding in the molding sand of vertical centrifugal casting machine mold that contains component 70% tungsten carbide (WC), 13% cobalt (Co), 15% nickel (Ni), 2% chromium (Cr) (all percentages all by weight).Cemented carbide rings is of a size of:
-external diameter 340mm
-internal diameter 260mm
-wide 100mm
After moulding, the bore area of cemented carbide rings and the side surface between internal diameter and 310mm diameter thereof are freely, so that the metallurgical binding between this place's formation sintered hard alloy and cast iron.Make mold with 400 rev/mins of rotations.To contain component 3.7% carbon (C), 2.3% silicon (Si), 0.3% manganese (Mn), 5.4% nickel (Ni), 0.2% molybdenum (Mo), 0.05% magnesium (Mg) and surplus and be iron (Fe) (all percentage number averages by weight), temperature is that 1540 ℃ cast iron melts body and drains in the rotation mold.About 1 minute of the duration of casting.Progressively stop the rotation at this moment.
The cooling back is cleared up composite roll and is checked with ultrasonic method.The quality of metallurgical binding is good.
In order to make retained austenite change bainite into, by being heated to 900 ℃, 6 hours retention times, be cooled to 450 ℃ then, 4 hours retention times, be cooled to the room temperature breaker roll subsequently and heat-treat.When heat treatment is carried out in unlimited air, with the surface that freely exposes of the topped cemented carbide rings of antioxidant.Dimension of roller is:
The body of roll: Φ 310mm(sintered hard alloy Φ 340) * 500mm.
Roll neck: Φ 220 * 300mm+220 * 520mm.
Claims (8)
1, roll, be preferably and be used for hot rolling or cold rolling roll, this roll barrel comprises one or several cemented carbide rings that is cast into casting alloy, this casting alloy mainly comprises graphite cast iron, and after casting, contain 5-30%, be preferably the retained austenite of 15-20% (weight), in order to reduce or to eliminate fully because cast iron that the cooling of casting back causes and the local contraction between the sintered hard alloy, this austenite is in heat treatment step once or several times subsequently, all or part of changing into mainly is bainite under the situation that volume increases, it is characterized in that this roll that comprises roll neck is to be cast as one, is machined to net shape and size subsequently.
2, the roll of claim 1 is characterized in that, this roll makes by centrifugal casting.
3, the roll of claim 2 is characterized in that, this roll comprises the core and the roll neck of the shell of the described cast iron that contains one or several carbide ring and another casting alloy by centrifugal or static casting.
4, the roll of claim 2 is characterized in that, this roll comprises a cemented carbide rings (or a plurality of ring) that only is cast into annular outer cover.
5, the preparation roll, be preferably the method that is used for hot rolling or cold rolling roll, wherein the body of roll comprises one or several cemented carbide rings that is cast into casting alloy, this casting alloy mainly comprises graphite cast iron, and after casting, contain 5-30%, be preferably 15-20%%(weight) retained austenite, in order to reduce or to eliminate fully because cast iron that the cooling of casting back causes and the local contraction between the sintered hard alloy, this austenite is when heat treatment step once or several times subsequently, changing into wholly or in part under volume increases mainly is bainite, it is characterized in that the roll that comprises roll neck is to cast one, is machined to net shape and size then.
6, the method for claim 5 is characterized in that, foundry goods is made by centrifugal casting technique.
7, the method for claim 6 is characterized in that, by centrifugal casting cemented carbide rings (or a plurality of ring) is cast into the shell of described casting alloy, then by centrifugal or static casting by another casting alloy casting roll core and roll neck.
8, the method for claim 6 is characterized in that, only casts annular outer cover.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9100405-1 | 1991-02-11 | ||
| SE9100405A SE9100405D0 (en) | 1991-02-11 | 1991-02-11 | ROLLING, COMPOSITION OF HEAVY METAL AND CASTING IRON, AND SUITABLE FOR PREPARATION OF THE SAME |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1064827A true CN1064827A (en) | 1992-09-30 |
| CN1032628C CN1032628C (en) | 1996-08-28 |
Family
ID=20381865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN92101435A Expired - Fee Related CN1032628C (en) | 1991-02-11 | 1992-02-11 | Roll, comprising cemented carbide and cast iron, and method for manufacture of same |
Country Status (17)
| Country | Link |
|---|---|
| EP (1) | EP0571465A1 (en) |
| JP (1) | JPH04319059A (en) |
| KR (1) | KR920016174A (en) |
| CN (1) | CN1032628C (en) |
| BR (1) | BR9200461A (en) |
| CA (1) | CA2060768A1 (en) |
| CZ (1) | CZ164393A3 (en) |
| FI (1) | FI933532A0 (en) |
| HU (1) | HU216115B (en) |
| IL (1) | IL100901A (en) |
| MX (1) | MX9200574A (en) |
| NZ (1) | NZ241549A (en) |
| RU (1) | RU2060067C1 (en) |
| SE (1) | SE9100405D0 (en) |
| TN (1) | TNSN92011A1 (en) |
| WO (1) | WO1992013651A1 (en) |
| ZA (1) | ZA92832B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009015A (en) * | 2013-01-13 | 2013-04-03 | 邯郸市永固冶金备件有限公司 | Method for manufacturing double metal composite wear-resistant metallurgical rollers |
| CN103978177A (en) * | 2014-05-22 | 2014-08-13 | 江苏双勤民生冶化设备制造有限公司 | Vertical centrifugal casting method for roll neck |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19827861A1 (en) * | 1997-06-27 | 1999-01-07 | Mitsubishi Materials Corp | Thermal shock resistant composite roll |
| SE533591C2 (en) * | 2009-03-12 | 2010-11-02 | Sandvik Intellectual Property | Roller comprising a drive shaft and a roller ring |
| CN102069152B (en) * | 2010-12-22 | 2012-10-03 | 宁夏共享集团有限责任公司 | Modeling method of large-size ring-structure casting |
| PL2508262T3 (en) | 2011-04-04 | 2014-05-30 | Cellwood Machinery Ab | Method of provision of a fuel |
| EP2508670B1 (en) | 2011-04-04 | 2013-08-21 | Cellwood Machinery AB | Refining disc or refining disc segment |
| JOP20200150A1 (en) | 2011-04-06 | 2017-06-16 | Esco Group Llc | Hardfaced wearpart using brazing and associated method and assembly for manufacturing |
| US9221232B2 (en) * | 2011-11-21 | 2015-12-29 | Hitachi Metals, Ltd. | Centrifugally cast composite roll and its production method |
| JP6496933B2 (en) * | 2015-04-16 | 2019-04-10 | 新日鐵住金株式会社 | Material selection method for continuous casting roll and continuous casting roll |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3248482A1 (en) * | 1982-12-29 | 1984-07-05 | VEB Walzengießerei Coswig im VEB Rohrkombinat, DDR 8270 Coswig | Method of manufacturing solid-cast pin rollers according to the horizontal spin-casting principle depending upon the raw cast ball diameter and pin diameter and the casting cycles deriving therefrom |
-
1991
- 1991-02-11 SE SE9100405A patent/SE9100405D0/en unknown
-
1992
- 1992-02-05 ZA ZA92832A patent/ZA92832B/en unknown
- 1992-02-06 CA CA002060768A patent/CA2060768A1/en not_active Abandoned
- 1992-02-07 CZ CS931643A patent/CZ164393A3/en unknown
- 1992-02-07 EP EP92904709A patent/EP0571465A1/en not_active Withdrawn
- 1992-02-07 WO PCT/SE1992/000072 patent/WO1992013651A1/en not_active Application Discontinuation
- 1992-02-07 HU HUP9302321A patent/HU216115B/en not_active IP Right Cessation
- 1992-02-07 NZ NZ241549A patent/NZ241549A/en not_active IP Right Cessation
- 1992-02-09 IL IL10090192A patent/IL100901A/en not_active IP Right Cessation
- 1992-02-10 RU SU5010881/02A patent/RU2060067C1/en not_active IP Right Cessation
- 1992-02-11 KR KR1019920001907A patent/KR920016174A/en not_active Application Discontinuation
- 1992-02-11 MX MX9200574A patent/MX9200574A/en unknown
- 1992-02-11 BR BR929200461A patent/BR9200461A/en not_active IP Right Cessation
- 1992-02-11 CN CN92101435A patent/CN1032628C/en not_active Expired - Fee Related
- 1992-02-11 TN TNTNSN92011A patent/TNSN92011A1/en unknown
- 1992-02-12 JP JP4025086A patent/JPH04319059A/en active Pending
-
1993
- 1993-08-10 FI FI933532A patent/FI933532A0/en not_active Application Discontinuation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009015A (en) * | 2013-01-13 | 2013-04-03 | 邯郸市永固冶金备件有限公司 | Method for manufacturing double metal composite wear-resistant metallurgical rollers |
| CN103978177A (en) * | 2014-05-22 | 2014-08-13 | 江苏双勤民生冶化设备制造有限公司 | Vertical centrifugal casting method for roll neck |
| CN103978177B (en) * | 2014-05-22 | 2016-06-15 | 江苏双勤民生冶化设备制造有限公司 | A kind of roll neck and vertical centrifugal castmethod thereof and application |
Also Published As
| Publication number | Publication date |
|---|---|
| HU9302321D0 (en) | 1993-10-28 |
| HUT65654A (en) | 1994-07-28 |
| MX9200574A (en) | 1993-01-01 |
| JPH04319059A (en) | 1992-11-10 |
| FI933532A (en) | 1993-08-10 |
| NZ241549A (en) | 1994-01-26 |
| IL100901A0 (en) | 1992-11-15 |
| RU2060067C1 (en) | 1996-05-20 |
| CN1032628C (en) | 1996-08-28 |
| BR9200461A (en) | 1992-10-20 |
| FI933532A0 (en) | 1993-08-10 |
| KR920016174A (en) | 1992-09-24 |
| SE9100405D0 (en) | 1991-02-11 |
| CA2060768A1 (en) | 1992-08-12 |
| IL100901A (en) | 1994-04-12 |
| HU216115B (en) | 1999-04-28 |
| WO1992013651A1 (en) | 1992-08-20 |
| TNSN92011A1 (en) | 1993-06-08 |
| CZ164393A3 (en) | 1994-02-16 |
| ZA92832B (en) | 1992-11-25 |
| EP0571465A1 (en) | 1993-12-01 |
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