CN111589873A - Combined roller and preparation method thereof - Google Patents
Combined roller and preparation method thereof Download PDFInfo
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- CN111589873A CN111589873A CN202010400716.6A CN202010400716A CN111589873A CN 111589873 A CN111589873 A CN 111589873A CN 202010400716 A CN202010400716 A CN 202010400716A CN 111589873 A CN111589873 A CN 111589873A
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- 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
- B21B27/032—Rolls for sheets or strips
-
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
- B22F3/04—Compacting only by applying fluid pressure, e.g. by cold isostatic pressing [CIP]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
- C22C29/16—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on nitrides
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Geometry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a combined roller and a preparation method thereof. The roller sleeve is a working surface of the roller and is arranged on the excircle of the roller core; the roll core is used for supporting the roll sleeve, the roll necks of the roll core are positioned at two ends of the roll core and are arranged in a bearing of a rolling mill, and the rolling force is transmitted to the rack through a bearing seat and a screw-down device; the roller sleeve fixing device is used for assembling the roller sleeve and the roller core together and has the functions of fixing and positioning; the roll sleeve is made of Ti (C, N) -based metal ceramic, so that the high precision, high modulus and high wear resistance of the roll are realized.
Description
Technical Field
The invention relates to the technical field of plate and strip rolling and bar and wire rolling, in particular to a combined roller and a preparation method thereof.
Background
The roller is one of the core components of the rolling mill and is a vulnerable part, and the performance of the roller is the key for determining the efficiency and the quality of rolled materials of the rolling mill. At present, the roller is basically made of tool and die steel, but the hardness and the elastic modulus of the steel roller are low, so that the high-precision, high-performance and high-efficiency rolling of the ultra-thin strip product of the steel rolling material which is difficult to roll is difficult to realize.
For this reason, researchers have adopted many approaches.
(1) The composite roll is characterized in that the outer layer and the core part (including the roll neck part) of a roll body of the roll are made of different materials, the two materials are metallurgically combined, and the composite roll can meet the requirements of the roll body of the rolling mill on the performances of wear resistance, thermal fatigue resistance and the like to a certain extent and simultaneously ensures the obdurability of the core part and the roll neck. The outer layer and the core material are mainly selected according to the specific requirements of the machine frame where the roller is arranged on the service performance of the roller. The outer layer material of the common composite roller comprises chilled cast iron, unbounded chilled cast iron, nodular cast iron, high-chromium cast iron, alloy steel, semi-steel, high-chromium steel, high-speed steel, hard alloy and the like; the core part is made of gray cast iron, nodular cast iron, cast steel and forged steel. The composite roll is widely applied to various rolling mills, such as a finish rolling work roll of a hot-rolled strip rolling mill, a back-up roll of a strip rolling mill, a middle and finish rolling work roll of a profile steel tube rolling mill, and the like. The roll shell of some combination rolls is also composite, such as the horizontal roll of an H-section mill, the stretch reducing roll of a tube mill, etc.
There are various methods for manufacturing the composite roll, and the main methods are a casting method, a welding method, a powder metallurgy method, a spray deposition method, a composite ingot forging method.
(2) Combination rolls (rolled roll): a combination roll is a roll in which a roll shell and a roll core made of different materials are mechanically assembled together, and is also called a nested roll.
1) The combined roller device with the Chinese patent number ZL03226253 is a combined roller device which adopts a hydraulic nut axial clamping mode to fix a roller ring on a roller shaft and comprises the roller shaft and a hydraulic nut, a locking ring, a spacer ring and an alloy roller ring which are arranged on the roller shaft, wherein the hydraulic nut is composed of a nut, a piston ring and a sealing rubber ring, the locking ring is arranged between the hydraulic nut and the alloy roller ring and is composed of a stepped ring and a flat ring, the outside of the stepped ring is a stepped cylindrical surface, the flat ring is sleeved outside the stepped ring, the matching surface of the flat ring and the stepped ring is at least two sections of multi-section inclined surface matching surfaces, and the thickness of the flat ring is equal to or slightly smaller than the gap between the. The utility model increases the ratio of the available working length of the roller, can combine the number of roller pieces at will, is convenient to disassemble and assemble, and has large working area of the hydraulic nut, thereby reducing the manufacturing cost of the hydraulic nut; the precision requirement for processing the locking ring is reduced, and the locking rings with different thicknesses do not need to be prepared, so that the operation is simple, the disassembly and the assembly are convenient, labor and time are saved. The hydraulic nut consists of a nut, a piston ring and a sealing rubber ring, the locking ring is arranged between the hydraulic nut and the alloy roll collar, the working surface is the alloy roll collar, and the hydraulic nut can only be used for producing rods and wires, can not be used for producing strips and can not be used for producing extremely thin strips.
ZL 201420618874.9, a combined roller structure, including the roller core, the peripheral coaxial axle center cover of roller core is equipped with the roller shell, the peripheral coaxial axle center cover of roller shell is equipped with the roller, the inside coaxial axle center of roller core is inserted and is had the roller, the roller core is made by rubber, the roller shell is made by alloy ball-milling cast iron, the roller is made by high chromium centrifugation composite cast iron, the roller is made by graphite steel, a plurality of annular dovetail grooves have evenly been seted up on the peripheral wall of roller, the centre of a circle of each annular dovetail groove all falls on the axis of roller, the distance size between two adjacent annular dovetail grooves is 2-5 times of the size of each annular dovetail groove, this combined roller structure, the comprehensive properties of main part is strong, whole low in production cost, the relation of connection is stable, operate steadily. A plurality of annular dovetail grooves are uniformly formed in the peripheral wall of the roller disclosed by the patent, and the roller can only be used for producing rods and wires, but cannot be used for producing strips and even extremely thin strips.
Through retrieval and patent analysis, the composite roller is used for rolling plate strips, and the combined roller is used for rolling rods, wires and section steel. The combined roller technology can be used for producing wide and thin strips and can also be used for rolling rods, wires and section steel, and needs to be developed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a combined roller and a preparation method thereof, which realize the high precision, high modulus and high wear resistance of the roller.
The technical scheme for realizing the purpose of the invention is as follows:
a combined roller consists of a roller core, a roller sleeve and a roller sleeve fixing device, wherein the roller sleeve is a working surface of the roller and is arranged on the excircle of the roller core; the roll core is used for supporting the roll sleeve, the roll necks of the roll core are positioned at two ends of the roll core and are arranged in a bearing of a rolling mill, and the rolling force is transmitted to the rack through a bearing seat and a screw-down device; the roller sleeve fixing device is used for assembling the roller sleeve and the roller core together and has the functions of fixing and positioning. The elastic modulus of the roller sleeve is greater than that of the roller core; the hardness and wear resistance of the roll shell are also greater than those of the roll core.
The sleeve also has a smooth cylindrical or grooved surface.
The roller sleeve is made of Ti (C, N) -based metal ceramic, and the roller core and the roller sleeve fixing device are made of common carbon steel or alloy steel; the elastic modulus of the roller sleeve of the Ti (C, N) -based metal ceramic material is 400-500 GPa, which is more than twice that of a high-speed steel roller, the red hardness is good, and the working temperature can reach 1100 ℃, so that the high modulus of the roller is realized; the high HRA is 84-93, the wear resistance is good, and the hardness is equivalent to that of hard alloy, so that the high wear resistance of the roller is realized; the Ti (C, N) -based cermet and the special processing technology are adopted, so that the precision of the roller is high, and the high precision of the roller is ensured.
The Ti (C, N) -based metal ceramic mainly comprises TiN: 35-65% and TiC: 20-60%, SiC: 3-10%, Cr3C 2: 5-13%; preferably: TiN: 45-55% and TiC: 40-50%, SiC: 3-5%, Cr3C 2: 5-10%; the above are the weight percentage contents.
A preparation method of a combined roller comprises the following steps:
(1) adopting a layer-by-layer pressing method, pressing the uniformly mixed Ti (C, N) -based metal ceramic powder layer by layer, pressing to a shape and a size larger than a required shape and size, and then carrying out cold isostatic pressing sintering;
the main components of the Ti (C, N) -based metal ceramic powder are TiN: 35-65% and TiC: 20-60%, SiC: 3-10%, Cr3C 2: 5-13%; preferably: TiN: 45-55% and TiC: 40-50%, SiC: 3-5%, Cr3C 2: 5-10%; the above are the weight percentage contents.
The specific pressing process comprises the following steps: selecting
Placing the annular hole die on a platform of a press machine, putting Ti (C, N) -based metal ceramic powder into an annular hole of the die, wherein the adding amount is 30-50 mm high, preferably 38-42 mm, each time, the powder with the height of 30-50 mm is pressed to 20-40 mm by a pressure head at the pressure of 1800-2300 MPa, and the powder with the height of 38-42 mm is pressed to 28-32 mm to form a layer by the pressure head at the pressure of 2000-2100 MPa; then, the powder with a height of 30-50 mm is loaded and pressed to 20-40 mm, and the powder is loaded and pressed to the required thickness, so the method is called a layer-by-layer pressing method.
(2) Machining an inner hole of the Ti (C, N) -based metal ceramic roller sleeve by taking the outer circle as a reference, wherein the taper of the inner hole is 1: 10-1: 50;
(3) processing the roller core, wherein the taper is consistent with that of the roller sleeve;
(4) a fixing device for processing the roller sleeve;
(5) the processed roller sleeve is arranged in the roller core without hot loading, and a positioning pin is added to the nut after the nut is fastened in place;
(6) and (5) carrying out fine grinding on the roller sleeve by taking the positioning hole of the roller core as a reference.
The Ti (C, N) -based cermet roller sleeve is manufactured by a layer-by-layer pressing method, so that large-size manufacturing, and organization and performance homogenization are realized.
The invention has the beneficial effects that:
(1) the roller sleeve is made of Ti (C, N) -based metal ceramic, the elastic modulus is up to 400-500 GPa, and is more than twice of that of a high-speed steel roller; the red hardness is good, and the working temperature can reach 1100 ℃, thereby realizing the high modulus of the roller.
(2) The roller sleeve is made of Ti (C, N) -based metal ceramic, has high HRA (hardness of 84-93) and good wear resistance, and is equivalent to hard alloy, so that high wear resistance of the roller is realized.
(3) The roller sleeve is made of Ti (C, N) -based cermet and a special processing technology, and the thermal expansion coefficient is 8-10 × 10- 6K-1Thermal expansion coefficient of 10-12 × 10 compared with carbon steel and alloy steel-6K-1And the high precision of the roller is ensured.
(4) The Ti (C, N) -based metal ceramic has low content of scarce resources, the cost is 35-55% of that of hard alloy, and the roll core is carbon steel or alloy steel with lower price, so that the processing cost of the whole roll is reduced.
Drawings
FIG. 1 is a sectional view showing the structure of a composite roll according to the present invention;
FIG. 2 is a cross-sectional view of the composite roll shell of the present invention;
FIG. 3 is a view of the core of the composite roll of the present invention;
fig. 4 is a structural view of the fixing device of the combined roller sleeve of the invention.
Description of the figures
1-roller core 2-roller sleeve fixing device 3-roller sleeve 4-fastening nut 5-positioning pin
Detailed Description
The following description is further provided in connection with the accompanying drawings and the detailed description of the embodiments for illustrating how the invention may be practiced.
(1) And (3) pressing the uniformly mixed Ti (C, N) -based metal ceramic powder layer by a layer-by-layer pressing method, pressing to a shape and a size larger than a required shape, and then carrying out cold isostatic pressing sintering. The size of the roller sleeve blank is as follows: the outer diameter phi is 96mm, the length is 300mm, the wall thickness is 17mm, and the hardness difference delta HRA is less than or equal to 2;
(2) machining an inner hole of the Ti (C, N) -based metal ceramic roller sleeve by taking the outer circle as a reference, wherein the taper of the inner hole is 1: 10-1: 50;
(3) as shown in fig. 3, the roller core 1 is processed, and the taper is consistent with that of the roller sleeve 3;
(4) as shown in fig. 4, the fixing device 2 for processing the roll shell;
(5) as shown in fig. 1 and 4, the processed roller sleeve 3 is arranged in the roller core 1, no hot loading is needed, and after the roller sleeve is fastened in place by a nut 4, a positioning pin 5 is added to the nut;
(6) and (3) carrying out fine grinding on the roller sleeve 3 by taking the positioning hole of the roller core 1 as a reference.
Example 1
1) A straight pull type 250mm four-roller cold rolling mill is selected,
2) selecting a working roll of phi 90mm
The material of the roller core is Cr12MoV, and the elastic modulus E is 206 Gpa;
the roller sleeve is high-modulus titanium carbonitride cermet, and the main components are TiN: 48% and TiC: 42%, SiC: 4%, Cr3C 2: 6 percent; . The elastic modulus E is 480Gpa, and the surface hardness of the roller body is HRA 91.6; the outer diameter of the roller sleeve is phi 94 multiplied by 300mm, and the wall thickness is 12 mm;
the roll shell is installed on the roll core and fixed by a fastening device.
3) Selecting 50W470 silicon steel sheets with the thickness of 0.50 multiplied by 130mm as rolled pieces;
rolling according to the original rolling schedule, namely adopting five passes to roll into a 50W470 silicon steel thin strip with the thickness of 0.10 multiplied by 130mm, reducing two passes compared with the original roller, reducing the average rolling force of the passes by 46 percent, having good plate shape, having the thickness precision of 0.10 plus or minus 0.003 percent which is higher than that of the two steel rollers by 0.10 plus or minus 0.009 percent, and improving the precision by two times.
Example 2
1) A straight pull type 250mm four-roller cold rolling mill is selected,
2) selecting a working roll of phi 90mm
The material of the roller core is Cr12MoV, and the elastic modulus E is 206 Gpa;
the roller sleeve is high-modulus titanium carbonitride cermet, and the main components are TiN: 50% and TiC: 40% and SiC: 5%, Cr3C 2: 5 percent; . The elastic modulus E is 480Gpa, and the surface hardness of the roller body is HRA 91.6; the outer diameter of the roller sleeve is phi 92 multiplied by 300mm, and the wall thickness is 11 mm;
the roll shell is installed on the roll core and fixed by a fastening device.
3) Selecting 50W470 silicon steel sheets with the thickness of 0.50 multiplied by 130mm as rolled pieces;
rolling according to the original rolling schedule, namely adopting five passes to roll into a 50W470 silicon steel thin strip with the thickness of 0.08 multiplied by 130mm, reducing two passes compared with the original roller, reducing the average rolling force of the passes by 52 percent, having good plate shape and thickness precision of 0.08 +/-0.002 which is higher than that of two steel rollers.
Claims (10)
1. A kind of combined roll, it is made up of core, roll sleeve and roll sleeve fixing device, the said roll sleeve is the working surface of the roll, install in the excircle of core, the roll neck of the core locates at both ends of the core and installs in the bearing of the rolling mill, transmit the rolling force to the stander through bearing bracket and screwdown gear; the roller sleeve fixing device is used for assembling the roller sleeve and the roller core together; the method is characterized in that: the elastic modulus of the roller sleeve is greater than that of the roller core; the hardness and wear resistance of the roll shell are also greater than those of the roll core.
2. The combination roll of claim 1, wherein: the roller sleeve is made of Ti (C, N) -based metal ceramic, and the roller core and the roller sleeve fixing device are made of common carbon steel or alloy steel.
3. The combination roll of claim 2, wherein: the elastic modulus of the roller sleeve made of the Ti (C, N) -based metal ceramic material is 400-500 GPa, and the hardness HRA is 84-93.
4. A composite roll according to any one of claims 1 to 3, characterised in that: the Ti (C, N) -based metal ceramic comprises the following main components in percentage by weight: TiN: 35-65% and TiC: 20-60%, SiC: 3-10%, Cr3C 2: 5 to 13 percent.
5. The combination roll of claim 4, wherein: the Ti (C, N) -based metal ceramic comprises the following main components in percentage by weight: TiN: 45-55% and TiC: 40-50%, SiC: 3-5%, Cr3C 2: 5 to 10 percent.
6. The combination roll of claim 1, wherein: the sleeve has a smooth cylindrical or grooved surface.
7. The method for manufacturing a composite roll according to any one of claims 1 to 6, comprising the steps of:
(1) adopting a layer-by-layer pressing method, pressing the uniformly mixed Ti (C, N) -based metal ceramic powder layer by layer, pressing to a shape and a size larger than a required shape and size, and then carrying out cold isostatic pressing sintering; preparing a Ti (C, N) -based metal ceramic roller sleeve;
(2) machining an inner hole of the Ti (C, N) -based metal ceramic roller sleeve by taking the excircle of the roller sleeve as a reference, wherein the taper of the inner hole is 1: 10-1: 50;
(3) processing the roller core, wherein the taper is consistent with that of the roller sleeve;
(4) a fixing device for processing the roller sleeve;
(5) the processed roller sleeve is arranged in the roller core without hot loading, and a positioning pin is added to the nut after the nut is fastened in place;
(6) and (5) carrying out fine grinding on the roller sleeve by taking the positioning hole of the roller core as a reference.
8. The method for manufacturing a combined roll according to claim 7, wherein: the layer-by-layer pressing method in the step (1) comprises the following steps: a. selecting
Placing the annular hole die on a platform of a press machine, putting Ti (C, N) -based metal ceramic powder into the annular hole of the die, wherein the adding amount is 30-50 mm high each time, and pressing the powder with the height of 30-50 mm to 20-40 mm to form a layer by a pressure machine head at the pressure of 1800-2300 MPa; b. and (c) repeating the step (a), and continuously installing and pressing to obtain the required thickness.
9. The method for manufacturing a combined roll according to claim 8, wherein: the adding amount of the Ti (C, N) -based metal ceramic powder is 38-42 mm each time, and the powder with the height of 38-42 mm is pressed to 28-32 mm by a pressure machine head at the pressure of 2000-2100 MPa.
10. The method for manufacturing a combined roll according to claim 7, wherein: the Ti (C, N) -based metal ceramic powder comprises the following components in percentage by weight: 35-65% and TiC: 20-60%, SiC: 3-10%, Cr3C 2: 5 to 13 percent.
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| CN202010400716.6A CN111589873A (en) | 2020-05-13 | 2020-05-13 | Combined roller and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010400716.6A CN111589873A (en) | 2020-05-13 | 2020-05-13 | Combined roller and preparation method thereof |
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| CN111589873A true CN111589873A (en) | 2020-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
| WO2024197690A1 (en) * | 2023-03-30 | 2024-10-03 | 张凤泉 | Roller assembly and rolling method |
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| JPS5027707A (en) * | 1973-07-13 | 1975-03-22 | ||
| CN1035964A (en) * | 1988-07-30 | 1989-10-04 | 郑州市上街有色金属合金厂 | Cold-rolling aluminium figured plate working roller and manufacturing process thereof |
| CN2262461Y (en) * | 1994-08-28 | 1997-09-17 | 陈德华 | Alloy combined roller |
| CN2533964Y (en) * | 2002-04-05 | 2003-02-05 | 范峻杰 | Hydraulic prestressed high strength combined roll |
| CN105198475A (en) * | 2015-09-28 | 2015-12-30 | 西北工业大学 | Method for producing complex-shaped porous silicon nitride ceramic product |
| CN108265217A (en) * | 2018-03-26 | 2018-07-10 | 西安交通大学 | A kind of method for preparing -304 stainless steel metal ceramics hot-rolling mill composite material collars of Ti (C, N) |
| CN108342657A (en) * | 2018-03-27 | 2018-07-31 | 东北大学 | A kind of high abrasion cermet composite roll set and preparation method thereof |
| CN108746272A (en) * | 2018-07-27 | 2018-11-06 | 吉林大学 | A kind of building mortion rolling curved-surface piece using composite (back-up) roll |
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2020
- 2020-05-13 CN CN202010400716.6A patent/CN111589873A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5027707A (en) * | 1973-07-13 | 1975-03-22 | ||
| CN1035964A (en) * | 1988-07-30 | 1989-10-04 | 郑州市上街有色金属合金厂 | Cold-rolling aluminium figured plate working roller and manufacturing process thereof |
| CN2262461Y (en) * | 1994-08-28 | 1997-09-17 | 陈德华 | Alloy combined roller |
| CN2533964Y (en) * | 2002-04-05 | 2003-02-05 | 范峻杰 | Hydraulic prestressed high strength combined roll |
| CN105198475A (en) * | 2015-09-28 | 2015-12-30 | 西北工业大学 | Method for producing complex-shaped porous silicon nitride ceramic product |
| CN108265217A (en) * | 2018-03-26 | 2018-07-10 | 西安交通大学 | A kind of method for preparing -304 stainless steel metal ceramics hot-rolling mill composite material collars of Ti (C, N) |
| CN108342657A (en) * | 2018-03-27 | 2018-07-31 | 东北大学 | A kind of high abrasion cermet composite roll set and preparation method thereof |
| CN108746272A (en) * | 2018-07-27 | 2018-11-06 | 吉林大学 | A kind of building mortion rolling curved-surface piece using composite (back-up) roll |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872041A (en) * | 2020-12-24 | 2021-06-01 | 东台市宏凯不锈钢有限公司 | Manganese alloy roller and manufacturing method thereof |
| WO2024197690A1 (en) * | 2023-03-30 | 2024-10-03 | 张凤泉 | Roller assembly and rolling method |
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Application publication date: 20200828 |
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