CN102744497A - Repair method for press roll of roll press - Google Patents
Repair method for press roll of roll press Download PDFInfo
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- CN102744497A CN102744497A CN2012102509534A CN201210250953A CN102744497A CN 102744497 A CN102744497 A CN 102744497A CN 2012102509534 A CN2012102509534 A CN 2012102509534A CN 201210250953 A CN201210250953 A CN 201210250953A CN 102744497 A CN102744497 A CN 102744497A
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Abstract
The invention discloses a repair method for the press roll of a roll press. The repair method comprises the following steps of: on the surface of the press roll, pre-treating the roll surface by carbon arc air explosion, and gouging off the wear-resistant layer of the roll surface; performing a flaw detection by using a dye flaw detection agent to check whether cracks exist, performing a pit excavation treatment on the cracks partially occurring on the roll surface, and filling the excavated pits via manual welding; after determining that the roll surface is qualified, warming the whole press roll to 120-145 DEG C, and surfacing the first backing layer of the roll surface in a manner of open arc welding by using YB-01 welding wires; when the first backing layer is surfaced to a place which is 8 mm away from the radial direction of the standard roll surface by using the YB-01 welding wires, surfacing the second wear-resistant layer by using YB-02 welding wires; surfacing the third special wear-resistant layer by using YB-03 welding wires; surfacing the fourth pattern layer having a structural shape which is an in-line shape, a diamond, a diamond with a point at the centre, a wave shape or a herringbone shape by using the YB-03 welding wires; surfacing the two end surfaces of the press roll by using the YB-02 welding wires; and after the two end surfaces are grinded levelly, surfacing a layer by using the YB-03 welding wires.
Description
Technical field
The present invention relates to a kind of restorative procedure of roll squeezer pressure roller.
Background technology
Roll squeezer is a kind of grinding system output and energy-conservation milling equipment that cuts down the consumption of energy of significantly improving.Roll squeezer contains a pair of pressure roller, and material is powdery or cracked state through the extruding of a pair of pressure roller of roll squeezer.The roll squeezer that with the specification is Φ 120 * 45 is an example, the average pressing materials 120-150t/h of this roll squeezer, and also 24h works continuously.Because the roll surface of roll squeezer pressure roller is directly to contact material, high-pressure extrusion stress is very big, and roll surface can produce certain thickness fatigue layer, the therefore inevitable wearing and tearing spalling failure phenomenon that on the roll surface of pressure roller, occurs.After operation after a while, the pressure roller that the pressure roller that roll surface is worn must more renew.Because new pressure roller costs an arm and a leg, therefore improved production cost greatly.
Summary of the invention
The technical problem that the present invention will solve provides a kind of restorative procedure of roll squeezer pressure roller, and this method can be repaired the roll squeezer pressure roller of roll surface wearing, thereby reduces production costs greatly.
In order to solve the problems of the technologies described above the restorative procedure of roll squeezer pressure roller of the present invention:
(1) with the carbon arc gas explosion roll surface is carried out preliminary treatment at roller surface, dig the wearing layer of roll surface;
(2) using the dye check agent to carry out defect detecting test has flawless, to processings of digging pit of the local crackle that occurs of roll surface, mends through manual welding and to put down the hole of being dug, confirm qualified after, pressure roller integral body is warmed to 120-145 ℃;
When (3) pressure roller integral body was warmed to 120-145 ℃, roll surface ground floor prime coat adopted the YB-01 welding wire with the built-up welding of open arc welding mode, and the temperature of maintenance pressure roller is at 120-145 ℃; The composition of YB-01 welding wire is: 0.08%～0.14% C, 9.00%～11.00% Cr, 14.00%～17.00% Mn; 0～0.04% P, 0～0.03% S, 0～0.50% Si; All the other are Fe, and every radially built-up welding 8mm measures the out of roundness of a pressure roller, make out of roundness remain on ± 2mm in;
(4) when adopting the YB-01 welding wire built-up welding to during to 8mm, using YB-02 welding wire built-up welding second layer wearing layer apart from the standard rollers face diameter instead, the pressure roller bulk temperature remains on 120-145 ℃, and the composition of YB-02 welding wire is: 5.20%～5.80% C; 26.00%～28.00% Cr, 1.60%～2.20% Mn, 0～0.03% P; 0～0.03% S, 0～1.20% Si, all the other are Fe; Measure the out of roundness of pressure roller once more, make out of roundness remain on ± 2mm in, roll surface hardness: HRC57～61;
(5) adopt the 3rd layer of special wearing layer of YB-03 welding wire built-up welding, the composition of YB-03 welding wire is: 5.90%～6.40% C, 22.00%～25.00% Cr; 0.80%～1.20% Mn, 0～0.03% P, 0～0.03% S; 0.70～1.20% Si; 6.00～7.00% Nb, all the other are Fe, and roller surface hardness is HRC60～64;
(6) adopt the 4th layer of flower-pattern layer of YB-03 welding wire built-up welding, the planform of the 4th layer of flower-pattern layer is rhombus, waveform or the herringbone that in-line, rhombus, center are added some points;
(7) adopt the both ends of the surface of YB-02 welding wire built-up welding pressure roller, after these both ends of the surface are polished flat, adopt YB-03 welding wire built-up welding one deck again.
The height of said in-line structure is 3～4mm, and width is 12～15mm, and adjacent in-line structure centre distance is 25mm.
The height of said diamond structure is 3～4mm, and water chestnut hem width degree is 12～15mm, and adjacent water chestnut limit centre-to-centre spacing is 25mm;
The diamond structure height of adding some points in said center is 3～4mm, and water chestnut hem width degree is 12～15mm, and adjacent water chestnut limit centre-to-centre spacing is 40mm, and diameter of built-up welding is that 15mm, height are the Rotary-table of 3～4mm in the middle of the rhombus.
Said wavy shaped configuration height is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.
The height of said herringbone structure is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.
Through above-mentioned restorative procedure, the pressure roller reparation that can roll surface be worn prolongs its service life greatly, and cost only is 1/5 of a former cost, and can carry out repeatedly built-up welding reparation, thereby greatly reduces production cost.
Description of drawings
Fig. 1 is the structural representation of the restorative procedure central roll surface build-up welding layer of roll squeezer pressure roller of the present invention.
Fig. 2 is the in-line decorative pattern.
Fig. 3 is an Argyle.
The Argyle that Fig. 4 adds some points for the center.
Fig. 5 is the waveform decorative pattern.
Fig. 6 is the Chevy Trucks.
1. pressure rollers among the figure, 2. prime coat, 3. wearing layer, 4. special wearing layer, 5. flower-pattern layer.
The specific embodiment
The restorative procedure of roll squeezer pressure roller, first trip is carried out preliminary treatment with the carbon arc gas explosion to roll surface on the surface that pressure roller 1 is worn, and digs the wearing layer of roll surface.Using the dye check agent to carry out defect detecting test then has flawless, to processings of digging pit of the local crackle that occurs of roll surface, mends through manual welding and to put down the hole of being dug, confirm qualified after, pressure roller 1 integral body is warmed to 120-145 ℃.When pressure roller 1 integral body is warmed to 120-145 ℃; Roll surface ground floor prime coat 2 adopts the YB-01 welding wire with the built-up welding of open arc welding mode, and is as shown in Figure 1, built-up welding parameter: electric current 350～400A; Voltage 28～32V; Welding wire overhang 30～35mm, speed of welding 450～500mm/min, and the temperature of maintenance pressure roller 1 is at 120-145 ℃.The composition of YB-01 welding wire is: 0.08%～0.14% C, 9.00%～11.00% Cr, 14.00%～17.00% Mn; 0～0.04% P, 0～0.03% S, 0～0.50% Si; All the other are Fe, and every radially built-up welding 8mm measures the out of roundness of a pressure roller 1, make out of roundness remain on ± 2mm in.When adopting the YB-01 welding wire built-up welding to during to 8mm, using YB-02 welding wire built-up welding second layer wearing layer 3 instead apart from the standard rollers face diameter, as shown in Figure 1, built-up welding parameter: electric current 350～400A; Voltage 32～36V, welding wire overhang 30～35mm, speed of welding: 500mm/min, hardness HRC57～61; The composition of YB-02 welding wire is: 5.20%～5.80% C, 26.00%～28.00% Cr, 1.60%～2.20% Mn, 0～0.03% P; 0～0.03% S, 0～1.20% Si, all the other are Fe; Measure the out of roundness of pressure roller 1 once more, make out of roundness remain on ± 2mm in, roll surface hardness: HRC57～61.Adopt the 3rd layer of special wearing layer 4 of YB-03 welding wire built-up welding, as shown in Figure 1, built-up welding parameter: 350～400A, voltage 32～36V; Welding wire overhang 30～35mm, speed of welding 500mm/min, the composition of YB-03 welding wire is: 5.90%～6.40% C, 22.00%～25.00% Cr; 0.80%～1.20% Mn, 0～0.03% P, 0～0.03% S; 0.70～1.20% Si, 6.00～7.00% Nb, all the other are Fe.Adopt the 4th layer of flower-pattern layer 5 of YB-03 welding wire built-up welding, as shown in Figure 1, adopt the 4th layer of flower-pattern layer 5 of YB-03 welding wire built-up welding.The planform of the 4th layer of flower-pattern layer 5 can be in-line, and is as shown in Figure 2; Rhombus, as shown in Figure 3; The rhombus of adding some points in the center, as shown in Figure 4, waveform, as shown in Figure 5; Herringbone, as shown in Figure 6.Adopt the both ends of the surface of YB-02 welding wire built-up welding pressure roller 1, after these both ends of the surface are polished flat, adopt YB-03 welding wire built-up welding one deck again.The height of said in-line structure is 3～4mm, and width is 12～15mm, and adjacent in-line structure centre distance is 25mm.The height of said diamond structure is 3～4mm, and water chestnut hem width degree is 12～15mm, and adjacent water chestnut limit centre-to-centre spacing is 25mm; The diamond structure height of adding some points in said center is 3～4mm, and water chestnut hem width degree is 12～15mm, and adjacent water chestnut limit centre-to-centre spacing is 40mm, and diameter of built-up welding is that 15mm, height are the Rotary-table of 3～4mm in the middle of the rhombus.Said wavy shaped configuration height is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.The height of said herringbone structure is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.Through above-mentioned restorative procedure, can the pressure roller 1 that roll surface is worn be repaired, prolonged its service life greatly, cost only is 1/5 of a former cost, and can carry out repeatedly built-up welding reparation, thereby greatly reduces production cost.
Claims (6)
1. the restorative procedure of a roll squeezer pressure roller is characterized in that:
(1) with the carbon arc gas explosion roll surface is carried out preliminary treatment at roller surface, dig the wearing layer of roll surface;
(2) using the dye check agent to carry out defect detecting test has flawless, to processings of digging pit of the local crackle that occurs of roll surface, mends through manual welding and to put down the hole of being dug, confirm qualified after, pressure roller integral body is warmed to 120-145 ℃;
When (3) pressure roller integral body was warmed to 120-145 ℃, roll surface ground floor prime coat adopted the YB-01 welding wire with the built-up welding of open arc welding mode, and the temperature of maintenance pressure roller is at 120-145 ℃; The composition of YB-01 welding wire is: 0.08%～0.14% C, 9.00%～11.00% Cr, 14.00%～17.00% Mn; 0～0.04% P, 0～0.03% S, 0～0.50% Si; All the other are Fe, and every radially built-up welding 8mm measures the out of roundness of a pressure roller, make out of roundness remain on ± 2mm in;
(4) when adopting the YB-01 welding wire built-up welding to during to 8mm, using YB-02 welding wire built-up welding second layer wearing layer apart from the standard rollers face diameter instead, the pressure roller bulk temperature remains on 120-145 ℃, and the composition of YB-02 welding wire is: 5.20%～5.80% C; 26.00%～28.00% Cr, 1.60%～2.20% Mn, 0～0.03% P; 0～0.03% S, 0～1.20% Si, all the other are Fe; Measure the out of roundness of pressure roller once more, make out of roundness remain on ± 2mm in, roll surface hardness: HRC57～61;
(5) adopt the 3rd layer of special wearing layer of YB-03 welding wire built-up welding, the composition of YB-03 welding wire is: 5.90%～6.40% C, 22.00%～25.00% Cr; 0.80%～1.20% Mn, 0～0.03% P, 0～0.03% S; 0.70～1.20% Si; 6.00～7.00% Nb, all the other are Fe, and roller surface hardness is HRC60～64;
(6) adopt the 4th layer of flower-pattern layer of YB-03 welding wire built-up welding, the planform of the 4th layer of flower-pattern layer is rhombus, waveform or the herringbone that in-line, rhombus, center are added some points;
(7) adopt the both ends of the surface of YB-02 welding wire built-up welding pressure roller, after these both ends of the surface are polished flat, adopt YB-03 welding wire built-up welding one deck again.
2. the restorative procedure of a kind of roll squeezer pressure roller according to claim 1 is characterized in that: the height of said in-line structure is 3～4mm, and width is 12～15mm, and adjacent in-line structure centre distance is 25mm.
3. the restorative procedure of a kind of roll squeezer pressure roller according to claim 1 is characterized in that: the height of said diamond structure is 3～4mm, and water chestnut hem width degree is 12～15mm, and adjacent water chestnut limit centre-to-centre spacing is 25mm.
4. the restorative procedure of a kind of roll squeezer pressure roller according to claim 1; It is characterized in that: the diamond structure height of adding some points in said center is 3～4mm; Water chestnut hem width degree is 12～15mm; Adjacent water chestnut limit centre-to-centre spacing is 40mm, and diameter of built-up welding is that 15mm, height are the Rotary-table of 3～4mm in the middle of the rhombus.
5. the restorative procedure of a kind of roll squeezer pressure roller according to claim 1 is characterized in that: said wavy shaped configuration height is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.
6. the restorative procedure of a kind of roll squeezer pressure roller according to claim 1 is characterized in that: the height of said herringbone structure is 3～4mm, and width is 12～15mm, and adjacent welding bead centre-to-centre spacing is 25mm.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102974916A (en) * | 2012-11-01 | 2013-03-20 | 金钧 | High-pressure (HP) series grinding roller open arc surfacing anti-dropping welding method |
| CN102990194A (en) * | 2012-11-01 | 2013-03-27 | 金钧 | Construction method adopting full-automatic open-arc bead-welding in overall welding |
| CN104002090A (en) * | 2014-05-27 | 2014-08-27 | 浙江联创焊接技术有限公司 | Squeeze roller face online repair method of roller press |
| CN104084750A (en) * | 2014-07-10 | 2014-10-08 | 河北瑞兆激光再制造技术有限公司 | Submerged-arc welding repair method after alkali production squeezing roller is worn |
| CN105057846A (en) * | 2015-07-09 | 2015-11-18 | 苏州优霹耐磨复合材料有限公司 | Grinding roll built-up welding technology |
| CN105436665A (en) * | 2015-12-16 | 2016-03-30 | 秦皇岛鸿翔焊业有限公司 | Surfacing reconstructed layer of large hot-rolled supporting roll Cr4 and method for repairing roll |
| CN105478962A (en) * | 2015-12-16 | 2016-04-13 | 秦皇岛鸿翔焊业有限公司 | Overlaying rebuilt layer for large cold-rolled supporting roll 70 Cr3Mo and method for repairing roll |
| CN105798424A (en) * | 2016-05-31 | 2016-07-27 | 沙洲职业工学院 | Roll surfacing repair device and repair method |
| CN106077891A (en) * | 2016-07-07 | 2016-11-09 | 苏州优霹耐磨复合材料有限公司 | Roll surface of roller press bead-welding technology |
| CN106238963A (en) * | 2016-09-18 | 2016-12-21 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene composite solder and preparation method thereof |
| CN106312248A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on graphene composite powder solder |
| CN106346111A (en) * | 2016-09-18 | 2017-01-25 | 安徽克里斯特新材料有限公司 | Press roller surface gas shielded surfacing process based on modified Fe-based graphene composite solder |
| CN109290735A (en) * | 2018-11-23 | 2019-02-01 | 浙江申轮水泥机械制造有限公司 | Improve the repair process of compression roller wearability |
| CN112935467A (en) * | 2019-12-10 | 2021-06-11 | 刘振英 | Automatic overlaying equipment and method for compression roller grids |
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| CN102974916A (en) * | 2012-11-01 | 2013-03-20 | 金钧 | High-pressure (HP) series grinding roller open arc surfacing anti-dropping welding method |
| CN102990194A (en) * | 2012-11-01 | 2013-03-27 | 金钧 | Construction method adopting full-automatic open-arc bead-welding in overall welding |
| CN102974916B (en) * | 2012-11-01 | 2016-01-20 | 金钧 | HP series grinding roller open arc built-up welding slip-off preventing welding method |
| CN104002090A (en) * | 2014-05-27 | 2014-08-27 | 浙江联创焊接技术有限公司 | Squeeze roller face online repair method of roller press |
| CN104002090B (en) * | 2014-05-27 | 2016-01-13 | 浙江联创焊接技术有限公司 | The online restorative procedure of large-scale roller press squeeze roll roll surface |
| CN104084750A (en) * | 2014-07-10 | 2014-10-08 | 河北瑞兆激光再制造技术有限公司 | Submerged-arc welding repair method after alkali production squeezing roller is worn |
| CN105057846A (en) * | 2015-07-09 | 2015-11-18 | 苏州优霹耐磨复合材料有限公司 | Grinding roll built-up welding technology |
| CN105057846B (en) * | 2015-07-09 | 2018-03-02 | 苏州优霹耐磨复合材料有限公司 | Grinding roll overlaying technique |
| CN105478962A (en) * | 2015-12-16 | 2016-04-13 | 秦皇岛鸿翔焊业有限公司 | Overlaying rebuilt layer for large cold-rolled supporting roll 70 Cr3Mo and method for repairing roll |
| CN105478962B (en) * | 2015-12-16 | 2017-10-31 | 秦皇岛鸿翔焊业有限公司 | The method of large-scale cold rolling backing roll 70Cr3Mo built-up welding reconstruction layer and repaired roller |
| CN105436665A (en) * | 2015-12-16 | 2016-03-30 | 秦皇岛鸿翔焊业有限公司 | Surfacing reconstructed layer of large hot-rolled supporting roll Cr4 and method for repairing roll |
| CN105798424A (en) * | 2016-05-31 | 2016-07-27 | 沙洲职业工学院 | Roll surfacing repair device and repair method |
| CN106077891A (en) * | 2016-07-07 | 2016-11-09 | 苏州优霹耐磨复合材料有限公司 | Roll surface of roller press bead-welding technology |
| CN106238963A (en) * | 2016-09-18 | 2016-12-21 | 安徽克里斯特新材料有限公司 | A kind of Modified Iron base Graphene composite solder and preparation method thereof |
| CN106312248A (en) * | 2016-09-18 | 2017-01-11 | 安徽克里斯特新材料有限公司 | Compression roller surface open arc overlaying method based on graphene composite powder solder |
| CN106346111A (en) * | 2016-09-18 | 2017-01-25 | 安徽克里斯特新材料有限公司 | Press roller surface gas shielded surfacing process based on modified Fe-based graphene composite solder |
| CN109290735A (en) * | 2018-11-23 | 2019-02-01 | 浙江申轮水泥机械制造有限公司 | Improve the repair process of compression roller wearability |
| CN112935467A (en) * | 2019-12-10 | 2021-06-11 | 刘振英 | Automatic overlaying equipment and method for compression roller grids |
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Application publication date: 20121024 |