CN105081521A - Precise surfacing welding method of high-hardness cold and hot rolls - Google Patents
Precise surfacing welding method of high-hardness cold and hot rolls Download PDFInfo
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- CN105081521A CN105081521A CN201510521922.1A CN201510521922A CN105081521A CN 105081521 A CN105081521 A CN 105081521A CN 201510521922 A CN201510521922 A CN 201510521922A CN 105081521 A CN105081521 A CN 105081521A
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- cold roll
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- surfacing welding
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Classifications
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical surfaces
-
- 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
- B23K35/3073—Fe as the principal constituent with Mn as next major constituent
-
- 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
- B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
-
- 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
- B23K35/3093—Fe as the principal constituent with other elements as next major constituents
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Plasma & Fusion (AREA)
- Heat Treatment Of Articles (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a precise surfacing welding method of high-hardness cold and hot rolls. The precise surfacing welding method comprises the following steps: (1) selecting die steel deposited metal components to prepare a surfacing alloy enabling the hardness of cold roll surfaces to be larger than 60 HRC for standby application; (2) cladding the covering surface of the alloy product after surfacing welding in the step (1) with metal components for standby application; (3) carrying out surfacing welding on the alloy product after surfacing welding in the step (2) with the preheating and interpass temperatures higher than 280 DEG C; and (4) carrying out high-temperature tempering on the alloy product after surfacing welding in the step (3), and carrying out secondary high-temperature tempering on cold-rolled working rolls with a higher demand for tenacity. The precise surfacing welding method is reasonable in conception and simple in operation procedure, the hard-face surfacing welding repairing or composite manufacturing of cold rolls and steel plate hot continuous rolling function rolls with high strength can be met, and the method is high in reliability and quality reproducibility.
Description
Technical field
The present invention relates to precision welding technical field, particularly relate to a kind of accurate overlaying method of the hot and cold roll of high rigidity of the high rigidity cold roll, wearing piece Bead weld repair that hot continuous rolling function roller (containing mould) is representative and the composite manufacturing that use hardness requirement >=60HRC.
Background technology
Having high roller (mould) face modern age uses the wearing piece of hardness requirement increasing.As: band steel, stainless steel; The reversible mill cold roll of aluminium, copper, titanium sheet material, the function roller such as smooth, aligning; The function rollers such as 60-100kg grade high-strength Hot Rolled Steel Producing coil wrapper roll, pinch roll.Mould class then comprises the tool and mould of cold extrusion, hot extrusion, as spinning block, extrusion die etc.
Along with modern age rolling technique day by day to high rolling intensity, high speed, high temperature (hot continuous rolling), high stocking surface quality future development, above-mentioned wearing piece applying working condition is more severe.Except the high hardness high toughness coupling requiring overlay cladding >=60HRC and weldability, higher requirement is all proposed to the microstructure grain size of deposited metal and macrohardness inhomogeneities etc., comprises the submerged arc overlay welding that can realize compared with heavy thickness.
Reality is: though be no lack of the Study and appliance report of above-mentioned wearing piece resurfacing welding material and technique, actual surfacing hardness is many in < 60HRC scope.But in recent years, also start to be active in studies in China institutes for the research of >=60HRC high rigidity cold roll resurfacing welding material specially.Wherein, CN101722383A patent, containing Co flux-cored wire built-up welding cold roll, is namely acquired one of important research and application achievements.
Above-mentioned known, be necessary to be further improved prior art.
Summary of the invention
For above problem, the invention provides a kind of reasonable idea, operating process is simple, can meet cold roll, also can meet hard-face overlaying welding reparation or the composite manufacturing of high-strength steel sheet hot continuous rolling function roller, there is the accurate overlaying method of the hot and cold roll of high rigidity of high reliability, quality repeatability.
The present invention is achieved by the following technical solutions:
The accurate overlaying method of the above-mentioned hot and cold roll of a kind of high rigidity, is characterized in that, described accurate overlaying method specifically comprises the following steps:
(1) capping layer hardfacing alloy, namely selects mould steel deposited metal composition, for subsequent use with the hardness of obtained cold roll roll surface >=60HRC hardfacing alloy;
(2) transition zone hardfacing alloy, by for subsequent use after deposited metal composition on the capping layer of above-mentioned steps (1) heap postwelding alloy product;
(3) low_input_power built-up welding, by alloy product built-up welding under the preheating of >=280 DEG C and interlayer temperature of above-mentioned steps (2) heap postwelding;
(4) tempering, the alloy product by above-mentioned steps (3) heap postwelding carries out high tempering, and the cold roll higher to toughness reguirements, carries out secondary high-temperature tempering, finally to obtain fine grained texture.
The accurate overlaying method of the hot and cold roll of described high rigidity, wherein: in described step (1) capping layer hardfacing alloy, the mass percent of deposited metal composition is carbon 0.4-1.0, chromium 2.0-6.0, silicon 1.0-1.5, manganese 1.0-2.0, vanadium 0.2-1.0, tungsten 6.0-10.0, molybdenum 0.5-1.5, the iron of surplus≤1.5.
The accurate overlaying method of the hot and cold roll of described high rigidity, wherein: in described step (2) transition zone hardfacing alloy, the mass percent of deposited metal composition is carbon 0.1-0.4, chromium 2.0-6.0, silicon 0.4-0.8, manganese 1.0-2.0, vanadium 0.1-0.6, molybdenum 0.5-1.8, tungsten, nickel, boron, titanium≤1.5, surplus is iron.
The accurate overlaying method of the hot and cold roll of described high rigidity, wherein: the weldingvoltage of described step (3) low_input_power built-up welding is 23-25V, and welding current is 320-350A.
The accurate overlaying method of the hot and cold roll of described high rigidity, wherein: the temperature of described step (4) high tempering is 600 DEG C.
The accurate overlaying method of the hot and cold roll of described high rigidity, wherein: that obtain after described step (4) high tempering is macrohardness inhomogeneities < ± 1.5HRC, and grain size is the fine grained texture of 10-11 level.
Beneficial effect:
Reasonable idea of the present invention, operating process is simple, can meet cold roll, also can meet hard-face overlaying welding reparation or the composite manufacturing of high-strength steel sheet hot continuous rolling function roller, generally improves 1-1.5 service life doubly, has high reliability, quality repeatability.Wherein, overlay cladding uses hardness can reach 60-65HRC, hardness inhomogeneities < ± 1.5HRC, microscopic structure tempered martensite+diffusion carbide etc., grain size 10-11 level, uses thickness to reach 15mm.The present invention, except satisfied >=60HRC high rigidity cold roll, takes into account the high tenacity submerged arc overlay welding material that the built-up welding of hot continuous rolling function roller needs simultaneously.
Advantage of the present invention is embodied in following several respects:
(1) capping layer hardfacing alloy can meet >=60HRC cold roll roll surface, takes into account again hot continuous rolling roller roll surface wear-resisting, anti-stick rigidity, cold & heat fatigue resisting and high tempering structure stability built-up welding needs.
(2) alloying component of transition zone hardfacing alloy, microscopic structure have adaptability, and by rational base material surfacing hardness gradient design, under can avoiding effect of stress, overlay cladding peels off;
(3) low_input_power built-up welding effectively can suppress the coarsening tendency of overlay cladding deposited metal, avoids cold and hot crackle, and creates conditions for postwelding tempering crystal grain thinning;
(4) high tempering can improve Dendritic TiC tissue further, impel Transformation of Retained Austenite, the precipitation of carbide etc. and dispersion degree more fully with complete, obtain the fine grained texture of 10-11 level grain size, macrohardness inhomogeneities < ± 1.5HRC.
Detailed description of the invention
The accurate overlaying method of the hot and cold roll of high rigidity of the present invention, specifically comprises the following steps:
(1) capping layer hardfacing alloy
Namely select mould steel deposited metal composition, for subsequent use with the hardness of obtained cold roll roll surface >=60HRC hardfacing alloy, the mass percent of deposited metal composition is carbon 0.4-1.0, chromium 2.0-6.0, silicon 1.0-1.5, manganese 1.0-2.0, vanadium 0.2-1.0, tungsten 6.0-10.0, molybdenum 0.5-1.5, surplus≤1.5;
(2) transition zone hardfacing alloy
By for subsequent use after deposited metal composition on the capping layer of the alloy product of above-mentioned steps (1) heap postwelding, the mass percent of deposited metal composition is carbon 0.1-0.4, chromium 2.0-6.0, silicon 0.4-0.8, manganese 1.0-2.0, vanadium 0.1-0.6, molybdenum 0.5-1.8, other tungsten, nickel, boron, titanium etc.≤1.5, surplus is iron;
(3) low_input_power built-up welding
Alloy product by above-mentioned steps (2) heap postwelding carries out low_input_power built-up welding, i.e. built-up welding under the preheating of >=280 DEG C and interlayer temperature, controls the weldingvoltage 23-25V of built-up welding, welding current 320-350A;
(4) tempering
The high tempering of about 600 DEG C is carried out by the alloy product of above-mentioned steps (3) through piling postwelding, the cold roll higher to toughness reguirements, then need secondary high-temperature tempering, finally to obtain the fine grained texture of macrohardness inhomogeneities < ± 1.5HRC, 10-11 level grain size.
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1
The composite manufacturing by hard surfacing of cold-rolling stainless steel reversible mill cold roll
Material: 9Cr2Mo, size ￠ 155 × 620, uses diameter ￠ 130-￠ 155.The 42CrMo roller stock through modifier treatment is selected to carry out composite manufacturing by hard surfacing.Its capping layer flux-cored wire deposited metal composition gets higher limit of the present invention, gage of wire ￠ 2.8, weldingvoltage 23-24V, electric current 320-330A; Postwelding overlay cladding after secondary high-temperature tempering uses hardness to be 61-65HRC.
Embodiment 2:
The pretreatment built-up welding strengthening of storepipe spinning block die face
Material: 9Cr2Mo, size ￠ 1200 × 2100; Require 2100mm full die face built-up welding pretreatment strengthening, use hardness 58-62HRC, hardened layer uses thickness 7mm.Die face capping layer flux-cored wire deposited metal is lower limit of the present invention, gage of wire ￠ 3.2, weldingvoltage 25-26V, electric current 350-360A; Postwelding uses hardness for 59-62HRC after 1 high tempering.
Embodiment 3:
60-100kg high-strength steel sheet hot continuous rolling batches Wrapping Roll, the reparation of pinch roll hard-face overlaying welding.
Material: 50CrMo, size ￠ 380 × 2300, hardened layer uses thickness 7mm.Capping layer flux-cored wire deposited metal is lower limit of the present invention, gage of wire ￠ 3.2, weldingvoltage 25-26V, electric current 350-360A; Postwelding uses hardness for 59-62HRC after 1 high tempering.
The accurate overlaying method step of the hot and cold roll of high rigidity of the present invention is simple, reasonable, can meet hard-face overlaying welding reparation or the composite manufacturing of high-strength steel sheet hot continuous rolling function roller, generally improves 1-1.5 service life doubly; For built-up welding enterprise provides one at the scene under built-up welding working condition, wearing piece has high reliability, the integrated approach of technique for overlaying of quality repeatability and case, is suitable for propagation and employment.
Claims (6)
1. an accurate overlaying method for the hot and cold roll of high rigidity, is characterized in that, described accurate overlaying method specifically comprises the following steps:
(1) capping layer hardfacing alloy
Namely mould steel deposited metal composition is selected, for subsequent use with the hardness of obtained cold roll roll surface >=60HRC hardfacing alloy;
(2) transition zone hardfacing alloy
By for subsequent use after deposited metal composition on the capping layer of above-mentioned steps (1) heap postwelding alloy product;
(3) low_input_power built-up welding
By alloy product built-up welding under the preheating of >=280 DEG C and interlayer temperature of above-mentioned steps (2) heap postwelding;
(4) tempering
Alloy product by above-mentioned steps (3) heap postwelding carries out high tempering, and the cold roll higher to toughness reguirements, carries out secondary high-temperature tempering.
2. the accurate overlaying method of the hot and cold roll of high rigidity as claimed in claim 1, it is characterized in that: in described step (1) capping layer hardfacing alloy, the mass percent of deposited metal composition is carbon 0.4-1.0, chromium 2.0-6.0, silicon 1.0-1.5, manganese 1.0-2.0, vanadium 0.2-1.0, tungsten 6.0-10.0, molybdenum 0.5-1.5, the iron of surplus≤1.5.
3. the accurate overlaying method of the hot and cold roll of high rigidity as claimed in claim 1, it is characterized in that: in described step (2) transition zone hardfacing alloy, the mass percent of deposited metal composition is carbon 0.1-0.4, chromium 2.0-6.0, silicon 0.4-0.8, manganese 1.0-2.0, vanadium 0.1-0.6, molybdenum 0.5-1.8, tungsten, nickel, boron, titanium≤1.5, surplus is iron.
4. the accurate overlaying method of the hot and cold roll of high rigidity as claimed in claim 1, is characterized in that: the weldingvoltage of described step (3) low_input_power built-up welding is 23-25V, and welding current is 320-350A.
5. the accurate overlaying method of the hot and cold roll of high rigidity as claimed in claim 1, is characterized in that: the temperature of described step (4) high tempering is 600 DEG C.
6. the accurate overlaying method of the hot and cold roll of high rigidity as claimed in claim 1, it is characterized in that: that obtain after described step (4) high tempering is macrohardness inhomogeneities < ± 1.5HRC, and grain size is the fine grained texture of 10-11 level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521922.1A CN105081521A (en) | 2015-08-22 | 2015-08-22 | Precise surfacing welding method of high-hardness cold and hot rolls |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510521922.1A CN105081521A (en) | 2015-08-22 | 2015-08-22 | Precise surfacing welding method of high-hardness cold and hot rolls |
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| CN105081521A true CN105081521A (en) | 2015-11-25 |
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| CN201510521922.1A Pending CN105081521A (en) | 2015-08-22 | 2015-08-22 | Precise surfacing welding method of high-hardness cold and hot rolls |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499751A (en) * | 2015-12-28 | 2016-04-20 | 湖北万安通复合再制造科技有限公司 | Hardfacing repair process used for hot continuous rolling pinch roll |
| CN112029983A (en) * | 2020-09-02 | 2020-12-04 | 中国电建集团山东电力建设第一工程有限公司 | Postweld heat treatment process for martensite heat-resistant steel G115 large-diameter thick-wall pipeline |
| CN114571031A (en) * | 2022-04-12 | 2022-06-03 | 福建鼎信科技有限公司 | 430 stainless steel hot-rolled conveying roller and surfacing method thereof |
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|---|---|---|---|---|
| US4143258A (en) * | 1976-02-27 | 1979-03-06 | British Steel Corporation | Welding microstructure control |
| JPH03264166A (en) * | 1990-03-14 | 1991-11-25 | Kobe Steel Ltd | Built-up roll and production thereof |
| JPH04123872A (en) * | 1990-09-14 | 1992-04-23 | Kobe Steel Ltd | Production of build up welded roll having excellent bead mark resistance |
| JP2004195553A (en) * | 2004-02-05 | 2004-07-15 | Kanto Special Steel Works Ltd | Roll for cold-rolling excellent in resistance to generation of line flaw |
| CN101104180A (en) * | 2006-07-14 | 2008-01-16 | 首钢总公司燕郊机械厂 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
| CN101412158A (en) * | 2008-12-01 | 2009-04-22 | 攀枝花钢城集团有限公司 | Flux-cored wire for producing hot rolling coiler wrapper roller by overlaying welding and overlaying welding method |
| CN102430839A (en) * | 2011-09-28 | 2012-05-02 | 常州宝菱重工机械有限公司 | Method for manufacturing composite straightening roll by overlaying |
| JP2012091225A (en) * | 2010-09-30 | 2012-05-17 | Kobe Steel Ltd | Overlay welding material and mechanical component with overlay welding metal welded thereto |
| CN102837116A (en) * | 2011-06-23 | 2012-12-26 | 张家港凯纳信息技术有限公司 | Overlaying welding repairing technology of stainless steel cold-rolled bearing roller |
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2015
- 2015-08-22 CN CN201510521922.1A patent/CN105081521A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4143258A (en) * | 1976-02-27 | 1979-03-06 | British Steel Corporation | Welding microstructure control |
| JPH03264166A (en) * | 1990-03-14 | 1991-11-25 | Kobe Steel Ltd | Built-up roll and production thereof |
| JPH04123872A (en) * | 1990-09-14 | 1992-04-23 | Kobe Steel Ltd | Production of build up welded roll having excellent bead mark resistance |
| JP2004195553A (en) * | 2004-02-05 | 2004-07-15 | Kanto Special Steel Works Ltd | Roll for cold-rolling excellent in resistance to generation of line flaw |
| CN101104180A (en) * | 2006-07-14 | 2008-01-16 | 首钢总公司燕郊机械厂 | Technology for repairing semi-steel roller with flux-core welding wire built-up welding |
| CN101412158A (en) * | 2008-12-01 | 2009-04-22 | 攀枝花钢城集团有限公司 | Flux-cored wire for producing hot rolling coiler wrapper roller by overlaying welding and overlaying welding method |
| JP2012091225A (en) * | 2010-09-30 | 2012-05-17 | Kobe Steel Ltd | Overlay welding material and mechanical component with overlay welding metal welded thereto |
| CN102837116A (en) * | 2011-06-23 | 2012-12-26 | 张家港凯纳信息技术有限公司 | Overlaying welding repairing technology of stainless steel cold-rolled bearing roller |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499751A (en) * | 2015-12-28 | 2016-04-20 | 湖北万安通复合再制造科技有限公司 | Hardfacing repair process used for hot continuous rolling pinch roll |
| CN105499751B (en) * | 2015-12-28 | 2018-02-13 | 湖北万安通复合再制造科技有限公司 | Hard-face overlaying welding renovation technique for hot continuous rolling pinch roll |
| CN112029983A (en) * | 2020-09-02 | 2020-12-04 | 中国电建集团山东电力建设第一工程有限公司 | Postweld heat treatment process for martensite heat-resistant steel G115 large-diameter thick-wall pipeline |
| CN114571031A (en) * | 2022-04-12 | 2022-06-03 | 福建鼎信科技有限公司 | 430 stainless steel hot-rolled conveying roller and surfacing method thereof |
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