CN103831306A - Composite high-temperature alloy material on surface of hot-rolling descaling pinch roll - Google Patents
Composite high-temperature alloy material on surface of hot-rolling descaling pinch roll Download PDFInfo
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- CN103831306A CN103831306A CN201210486720.4A CN201210486720A CN103831306A CN 103831306 A CN103831306 A CN 103831306A CN 201210486720 A CN201210486720 A CN 201210486720A CN 103831306 A CN103831306 A CN 103831306A
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Abstract
The invention discloses a composite high-temperature alloy material on the surface of a hot-rolling descaling pinch roll. The composite high-temperature alloy material comprises a roll base body, a surface overlaying combining layer and a surface overlaying working layer. The surface overlaying combining layer is formed by evenly welding low-temperature alloy welding wires to the surface of the roll base body, and the surface overlaying working layer is formed by welding high-temperature alloy welding wires to the surface of the surface overlaying combining layer evenly. The composite high-temperature alloy material on the surface of the hot-rolling descaling pinch roll is simple in structure and convenient to produce and manufacture, surface flatness is good, plasticity is strong in the roll manufacturing process, the finished roll is high in strength and strong in high-temperature resistance and corrosion resistance, the service life of the roll is effectively prolonged, production cost and equipment maintenance cost are reduced, and production efficiency is improved.
Description
Technical field
The present invention relates to a kind of hot rolling rolling line roll material, particularly a kind of hot rolling de-scaling pinch roll surface recombination high-temperature alloy material.
Background technology
A kind of narrow and long steel plate that all kinds of Metallurgical Enterprise are produced in order to adapt to the needs of the each metalloid of different industrial department suitability for industrialized production or engineering goods with steel.Band steel claims again steel band, be width in 1300mm, length is slightly different according to the size of every volume.Band steel general rolling supply, has that dimensional accuracy is high, surface quality good, be convenient to processing, save the advantages such as material.Identical with steel plate, band steel is divided into ordinary band steel and quality strip steel two classes by material used; Divide two kinds of hot-strip, cold-strip steels by processing method.Along with the improving constantly of steel production technology, user is also all the more strict to the requirement of strip surface quality and precision.Therefore plate belt hot rolling is paid close attention to de-scaling process in producing.It has become a key technology in thin plate production.Descaling device is made up of spare parts such as water under high pressure, de-scaling pinch rolls, and its hydraulic pressure is from 10 to 40Mpa.Under this working condition, the operation and maintenance of de-scaling pinch roll has direct impact to strip.Under normal circumstances; de-scaling pinch roll surface recombination martensite stainless steel material is protected in advance; but this material forms under the effect of compression by hydraulic pressure and slab in water injector flushing and the body of roll; rust staining and the wearing and tearing of surface various degrees; cause coiled sheet surface to have scuffing phenomenon, have a strong impact on coiled sheet surface quality, general life cycle is 15 days; cause roll change frequent, had a strong impact on the production cost control of rolling line production efficiency and enterprise.
Summary of the invention
For addressing the above problem, the invention discloses a kind of hot rolling de-scaling pinch roll surface recombination high-temperature alloy material, simple in structure, manufacture is simple and convenient, and material surface regularity is good, and in roller process processed, material plasticity is strong, finished product roller intensity is high, high-temperature-resistant and anti-corrosion is strong, has effectively extended the service life of roller, has improved production efficiency.
Hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, comprise roller matrix, surface overlaying binder course and surface overlaying working lining, described surface overlaying binder course is for to be obtained at roller matrix surface uniform welding by low-temperature alloy welding wire, and described surface overlaying working lining is for to be obtained in the built-up welding of surface overlaying binder course surface uniform by high temperature alloy welding wire.Hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, simple in structure, manufacture is convenient, material surface regularity is good, in roller process processed, plasticity is strong, finished product roller intensity is high, high-temperature-resistant and anti-corrosion is strong, effectively extend the service life of roller, reduced the maintenance cost of production cost and equipment, improved the surface quality of production efficiency and hot rolled strip finished product, thereby improve the hot rolling output of enterprise, improve the yield rate of hot-rolled product, thereby improved the output capacity of hot rolling enterprise, effectively reduced production cost.
The one of hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention is improved, and the main component of described low-temperature alloy welding wire is (following component is quality percentage composition): C:0.10-0.13%; Si:0.7-0.10%; Mn:1.6-2.0%; Cr:0.8-1.1%; Surplus is iron and inevitable trace impurity.This improvement is by the surface overlaying binder course arranging, in improving roller matrix surface welding performance, also give roller matrix surface and there is good plasticity and toughness, thereby quality stability and the welding quality of roller are improved, thereby quality and the service life of roller are improved, the service life of having improved equipment.
Another of hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention improved, and the main component of described high temperature alloy welding wire is (following component is quality percentage composition): C:0.03-0.08%; Si:0.7-1.0%; Mn:1.2-1.6%; Cr:16-18%; Mo:16-18%; W:3-6%; Surplus is nickel and inevitable trace impurity.This improvement is by the surface overlaying working lining arranging, effectively improve the wear Characteristics on roller surface, make the surface of roller there is good heat resistance, anti-oxidant zinc and corrosion resistance, effectively improve the quality of roller, extend the service life of roller and hot rolling quality and the yield rate of steel band product, reduced production cost.
Another of hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention improved, and the technological parameter of described built-up welding is: welding current: 350～400A; Weldingvoltage: 30～32V; Body of roll rotating speed: 400～500r/min; Dolly rotating speed: 500～600r/min.This improvement is by the built-up welding operation technique of the surface overlaying working lining of setting, effectively improve the welding quality of surface overlaying working lining, thereby surface state and the surface quality of roller are effectively improved, reduce the wear rate on roller surface, thereby improve the quality of production of steel band product, improve output capacity and the yield rate of enterprise, reduced the maintenance cost of production cost and the equipment of enterprise.
Hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, simple in structure, manufacture is convenient, material surface regularity is good, in roller process processed, plasticity is strong, be conducive to improve the quality on roller surface, finished product roller intensity is high, high-temperature-resistant and anti-corrosion is strong, effectively extend the service life of roller, reduce the maintenance cost of production cost and equipment, improve the surface quality of production efficiency and hot rolled strip finished product, thereby improve the hot rolling output of enterprise, improve the yield rate of hot-rolled product, thereby improve the output capacity of hot rolling enterprise, effectively reduce production cost.
Brief description of the drawings
The front view of the pressurizing unit of Fig. 1, pinch roll disclosed by the invention;
The side view of the pressurizing unit of Fig. 2, pinch roll disclosed by the invention.
Reference numerals list:
1, pinch roll; 2, pressurizing unit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand following detailed description of the invention and only be not used in and limit the scope of the invention for the present invention is described.It should be noted that, word 'fornt', 'back', " left side ", " right side ", "up" and "down" that use is described below refer to the direction in accompanying drawing, and word " interior " and " outward " refer to respectively the direction towards or away from specific features geometric center.
As depicted in figs. 1 and 2, hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, comprise roller matrix, surface overlaying binder course and surface overlaying working lining, described surface overlaying binder course is for to be obtained at roller matrix surface uniform welding by low-temperature alloy welding wire, and described surface overlaying working lining is for to be obtained in the built-up welding of surface overlaying binder course surface uniform by high temperature alloy welding wire.Hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, simple in structure, manufacture is convenient, material surface regularity is good, in roller process processed, plasticity is strong, finished product roller intensity is high, high-temperature-resistant and anti-corrosion is strong, effectively extend the service life of roller, reduced the maintenance cost of production cost and equipment, improved the surface quality of production efficiency and hot rolled strip finished product, thereby improve the hot rolling output of enterprise, improve the yield rate of hot-rolled product, thereby improved the output capacity of hot rolling enterprise, effectively reduced production cost.
Preferred as one, the main component of described low-temperature alloy welding wire is (following component is quality percentage composition): C:0.10-0.13%; Si:0.7-0.10%; Mn:1.6-2.0%; Cr:0.8-1.1%; Surplus is iron and inevitable trace impurity.By the surface overlaying binder course arranging, in improving roller matrix surface welding performance, also give roller matrix surface and there is good plasticity and toughness, thereby quality stability and the welding quality of roller are improved, thereby quality and the service life of roller are improved, the service life of having improved equipment.
Preferred as one, the main component of described high temperature alloy welding wire is (following component is quality percentage composition): C:0.03-0.08%; Si:0.7-1.0%; Mn:1.2-1.6%; Cr:16-18%; Mo:16-18%; W:3-6%; Surplus is nickel and inevitable trace impurity.By the surface overlaying working lining arranging, effectively improve the wear Characteristics on roller surface, make the surface of roller there is good heat resistance, anti-oxidant zinc and corrosion resistance, effectively improve the quality of roller, extend the service life of roller and hot rolling quality and the yield rate of steel band product, reduced production cost.
Preferred as one, the technological parameter of described built-up welding is: welding current: 350～400A; Weldingvoltage: 30～32V; Body of roll rotating speed: 400～500r/min; Dolly rotating speed: 500～600r/min.By the built-up welding operation technique of surface overlaying working lining arranging, effectively improve the welding quality of surface overlaying working lining, thereby surface state and the surface quality of roller are effectively improved, reduce the wear rate on roller surface, thereby improve the quality of production of steel band product, improve output capacity and the yield rate of enterprise, reduced the maintenance cost of production cost and the equipment of enterprise.
Specific embodiment one
First roller matrix is carried out to preheating, be preheated to 200 DEG C, select low-temperature alloy welding wire to be welded on equably the surface of roller matrix as surface overlaying binder course material, the main chemical compositions of this welding wire is: C:0.10%; Si:0.7%; Mn:1.6%; Cr:0.8%; All the other are iron and trace impurity.This alloy material has well roller matrix to mould, toughness, and welding technological properties is good.Select high temperature alloy welding wire as surface overlaying working layer again and pile equably the outer surface that is welded in surface overlaying binder course, the main chemical compositions of this welding wire is: C:0.03%; Si:0.7%; Mn:1.2%; Cr:16%; Mo:16%; W:3%; All the other are nickel and trace impurity.It is good that this material makes roller surface have wear Characteristics, has advantages of higher heat resistance, non-oxidizability, corrosion resistance etc.Wherein bead-welding technology parameter is: welding current: 350～400A, weldingvoltage: 30～32V, body of roll rotating speed: 400～500r/min, dolly rotating speed: 500～600r/min.Postwelding enters stove insulation slow cooling to room temperature.The 3rd step, carries out machined to roll surface, is machined to figure paper size+0.50 ㎜, and now roll surface hardness is HRC24-26.The 4th step, as depicted in figs. 1 and 2, select pressurizing unit 2 to push the roll surface of pinch roll 1, make roll surface generation plastic deformation, form strengthening layer, after extruding, roll surface hardness is HRC40-45, extrusion process is mainly to rotate along center line by pinch roll 1, pressurizing unit 2 is fixed on high position, center, moves along centerline direction, and pressurizing unit 2 will form compression with roll surface.Improve significantly material surface fatigue life, stress corrosion resistant ability.Finally, with numerically control grinder, roll surface cylindrical is carried out to grinding according to technical requirement, be machined to figure paper size and roll shape.
Specific embodiment two
First roller matrix is carried out to preheating, be preheated to 200 DEG C, select low-temperature alloy welding wire to be welded on equably the surface of roller matrix as surface overlaying binder course material, the main chemical compositions of this welding wire is: C:0.12%; Si:0.85%; Mn:1.8%; Cr:0.95%; All the other are iron and trace impurity.This alloy material has well roller matrix to mould, toughness, and welding technological properties is good.Select high temperature alloy welding wire as surface overlaying working layer again and pile equably the outer surface that is welded in surface overlaying binder course, the main chemical compositions of this welding wire is: C:0.06%; Si:0.8%; Mn:1.4%; Cr:17%; Mo:17%; W:5%; All the other are nickel and trace impurity.It is good that this material makes roller surface have wear Characteristics, has advantages of higher heat resistance, non-oxidizability, corrosion resistance etc.Wherein bead-welding technology parameter is: welding current: 350～400A, weldingvoltage: 30～32V, body of roll rotating speed: 400～500r/min, dolly rotating speed: 500～600r/min.Postwelding enters stove insulation slow cooling to room temperature.The 3rd step, carries out machined to roll surface, is machined to figure paper size+0.50 ㎜, and now roll surface hardness is HRC24-26.The 4th step, as depicted in figs. 1 and 2, select pressurizing unit 2 to push the roll surface of pinch roll 1, make roll surface generation plastic deformation, form strengthening layer, after extruding, roll surface hardness is HRC42-46, extrusion process is mainly to rotate along center line by pinch roll 1, pressurizing unit 2 is fixed on high position, center, moves along centerline direction, and pressurizing unit 2 will form compression with roll surface.Improve significantly material surface fatigue life, stress corrosion resistant ability.Finally, with numerically control grinder, roll surface cylindrical is carried out to grinding according to technical requirement, be machined to figure paper size and roll shape.
Specific embodiment three
First roller matrix is carried out to preheating, be preheated to 200 DEG C, select low-temperature alloy welding wire to be welded on equably the surface of roller matrix as surface overlaying binder course material, the main chemical compositions of this welding wire is: C:0.13%; Si:1.0%; Mn:2.0%; Cr:1.1%; All the other are iron and trace impurity.This alloy material has well roller matrix to mould, toughness, and welding technological properties is good.Select high temperature alloy welding wire as surface overlaying working layer again and pile equably the outer surface that is welded in surface overlaying binder course, the main chemical compositions of this welding wire is: C:0.08%; Si:1.0%; Mn:1.6%; Cr:18%; Mo:18%; W:6%; All the other are nickel and trace impurity.It is good that this material makes roller surface have wear Characteristics, has advantages of higher heat resistance, non-oxidizability, corrosion resistance etc.Wherein bead-welding technology parameter is: welding current: 350～400A, weldingvoltage: 30～32V, body of roll rotating speed: 400～500r/min, dolly rotating speed: 500～600r/min.Postwelding enters stove insulation slow cooling to room temperature.The 3rd step, carries out machined to roll surface, is machined to figure paper size+0.50 ㎜, and now roll surface hardness is HRC24-26.The 4th step, as depicted in figs. 1 and 2, select pressurizing unit 2 to push the roll surface of pinch roll 1, make roll surface generation plastic deformation, form strengthening layer, after extruding, roll surface hardness is HRC41-46, extrusion process is mainly to rotate along center line by pinch roll 1, pressurizing unit 2 is fixed on high position, center, moves along centerline direction, and pressurizing unit 2 will form compression with roll surface.Improve significantly material surface fatigue life, stress corrosion resistant ability.Finally, with numerically control grinder, roll surface cylindrical is carried out to grinding according to technical requirement, be machined to figure paper size and roll shape.
Specific embodiment four
First roller matrix is carried out to preheating, be preheated to 200 DEG C, select low-temperature alloy welding wire to be welded on equably the surface of roller matrix as surface overlaying binder course material, the main chemical compositions of this welding wire is: C:0.12%; Si:0.9%; Mn:1.7%; Cr:1.05%; All the other are iron and trace impurity.This alloy material has well roller matrix to mould, toughness, and welding technological properties is good.Select high temperature alloy welding wire as surface overlaying working layer again and pile equably the outer surface that is welded in surface overlaying binder course, the main chemical compositions of this welding wire is: C:0.07%; Si:0.9%; Mn:1.5%; Cr:17.5%; Mo:16.5%; W:4%; All the other are nickel and trace impurity.It is good that this material makes roller surface have wear Characteristics, has advantages of higher heat resistance, non-oxidizability, corrosion resistance etc.Wherein bead-welding technology parameter is: welding current: 350～400A, weldingvoltage: 30～32V, body of roll rotating speed: 400～500r/min, dolly rotating speed: 500～600r/min.Postwelding enters stove insulation slow cooling to room temperature.The 3rd step, carries out machined to roll surface, is machined to figure paper size+0.50 ㎜, and now roll surface hardness is HRC24-26.The 4th step, as depicted in figs. 1 and 2, select pressurizing unit 2 to push the roll surface of pinch roll 1, make roll surface generation plastic deformation, form strengthening layer, after extruding, roll surface hardness is HRC40-43, extrusion process is mainly to rotate along center line by pinch roll 1, pressurizing unit 2 is fixed on high position, center, moves along centerline direction, and pressurizing unit 2 will form compression with roll surface.Improve significantly material surface fatigue life, stress corrosion resistant ability.Finally, with numerically control grinder, roll surface cylindrical is carried out to grinding according to technical requirement, be machined to figure paper size and roll shape.
Hot rolling de-scaling pinch roll surface recombination high-temperature alloy material disclosed by the invention, simple in structure, manufacture is convenient, material surface regularity is good, in roller process processed, plasticity is strong, be conducive to improve the quality on roller surface, finished product roller intensity is high, high-temperature-resistant and anti-corrosion is strong, effectively extend the service life of roller, reduce the maintenance cost of production cost and equipment, improve the surface quality of production efficiency and hot rolled strip finished product, thereby improve the hot rolling output of enterprise, improve the yield rate of hot-rolled product, thereby improve the output capacity of hot rolling enterprise, effectively reduce production cost.
The disclosed technological means of the present invention program is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being made up of above technical characterictic.The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (4)
1. a hot rolling de-scaling pinch roll surface recombination high-temperature alloy material, it is characterized in that: described hot rolling de-scaling pinch roll surface recombination high-temperature alloy material comprises roller matrix, surface overlaying binder course and surface overlaying working lining, described surface overlaying binder course is for to be obtained at roller matrix surface uniform welding by low-temperature alloy welding wire, and described surface overlaying working lining is for to be obtained in the built-up welding of surface overlaying binder course surface uniform by high temperature alloy welding wire.
2. hot rolling de-scaling pinch roll surface recombination high-temperature alloy material according to claim 1, is characterized in that: the main component of described low-temperature alloy welding wire is (following component is quality percentage composition): C:0.10-0.13%; Si:0.7-0.10%; Mn:1.6-2.0%; Cr:0.8-1.1%; Surplus is iron and inevitable trace impurity.
3. hot rolling de-scaling pinch roll surface recombination high-temperature alloy material according to claim 1, is characterized in that: the main component of described high temperature alloy welding wire is (following component is quality percentage composition): C:0.03-0.08%; Si:0.7-1.0%; Mn:1.2-1.6%; Cr:16-18%; Mo:16-18%; W:3-6%; Surplus is nickel and inevitable trace impurity.
4. hot rolling de-scaling pinch roll surface recombination high-temperature alloy material according to claim 1, is characterized in that: the technological parameter of described built-up welding is: welding current: 350～400A; Weldingvoltage: 30～32V; Body of roll rotating speed: 400～500r/min; Dolly rotating speed: 500～600r/min.
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| CN201210486720.4A CN103831306A (en) | 2012-11-27 | 2012-11-27 | Composite high-temperature alloy material on surface of hot-rolling descaling pinch roll |
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| CN201210486720.4A CN103831306A (en) | 2012-11-27 | 2012-11-27 | Composite high-temperature alloy material on surface of hot-rolling descaling pinch roll |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798325A (en) * | 2020-06-14 | 2021-12-17 | 上海梅山钢铁股份有限公司 | Hot coiling box pinch roll device for preventing meat sticking and control method |
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| CN113798325A (en) * | 2020-06-14 | 2021-12-17 | 上海梅山钢铁股份有限公司 | Hot coiling box pinch roll device for preventing meat sticking and control method |
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