CN105798424A - Roll surfacing repair device and repair method - Google Patents
Roll surfacing repair device and repair method Download PDFInfo
- Publication number
- CN105798424A CN105798424A CN201610371404.0A CN201610371404A CN105798424A CN 105798424 A CN105798424 A CN 105798424A CN 201610371404 A CN201610371404 A CN 201610371404A CN 105798424 A CN105798424 A CN 105798424A
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- roll
- welding
- built
- cover
- prosthetic device
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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
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding In General (AREA)
Abstract
The invention discloses a roll surfacing repair device and a repair method. The roll surfacing repair device comprises two bearing bases and two groups of surfacing assemblies, wherein each of the two groups of surfacing assemblies comprises a transverse guide rail, a longitudinal guide rail and a welding machine; first bearing plates are separately arranged on the transverse guide rails; the longitudinal guide rails are separately arranged on the first bearing plates; second bearing plates are arranged on the longitudinal guide rails; the welding machines are arranged on the second bearing plates; a thermal insulation cover is arranged between the two bearing bases; and roll repair is carried out by detecting before surfacing, pre-heating before welding, welding, heat treatment and processing. In this way, the roll surfacing repair device and the repair method adopt the surfacing assemblies to replace part of manual operation, so that risks are reduced; and moreover, the thermal insulation cover is especially adopted, so that the work of a welding gun is not affected, loss of heat can be reduced, energy consumption is reduced, the technical temperature of roll surfacing is ensured, and the surfacing quality is improved.
Description
Technical field
The present invention relates to roll repair welding field, particularly relate to a kind of roll overlaying prosthetic device and restorative procedure.
Background technology
Roll can produce normal wear and abnormal damage in the process used so that dimension of roller reduces and presents irregular pit on surface, if size reduction transfinites or pit is excessive, then and cannot normal operation, it is necessary to change roll or reparation.
The replacement cost of roll is higher, and therefore, big more options are repaired.Traditional roll repair welding method is the accumulation that the mode adopting artificial built-up welding carries out wlding on the surface of roll, it is subsequently processed into original size, owing to the built-up welding temperature of roll is higher, and needing during built-up welding repeatedly to heat, energy consumption is big, labor intensity is big, the bad environments of high temperature, it is easy to scald, inefficiency, poor welding quality, it is necessary to improve.
Summary of the invention
The technical problem that present invention mainly solves is to provide a kind of roll overlaying prosthetic device and restorative procedure, promotes work efficiency and safety that roll overlaying is repaired.
For solving above-mentioned technical problem, the technical scheme that the present invention adopts is: provide a kind of roll overlaying prosthetic device, including: two bearing blocks and two groups of built-up welding assemblies, said two bearing block is separately positioned on the two ends of roll, described two groups of built-up welding assemblies are separately positioned on the both sides of roll, described two groups of built-up welding assemblies include cross slide way respectively, longitudinal rail and welding machine, described cross slide way is respectively arranged with the first loading plate, described longitudinal rail is separately positioned on the first loading plate, described longitudinal rail is provided with the second loading plate, described welding machine is arranged on the second loading plate, described welding machine includes the welding gun of a sensing roll, it is provided with thermal insulation cover between said two bearing block.
In a preferred embodiment of the present invention, described cross slide way is paralleled with the axis of roll, and described cross slide way is perpendicular with longitudinal rail.
In a preferred embodiment of the present invention, described thermal insulation cover includes upper arcuate cover and lower curved cover, it is connected by snap close between described upper arcuate cover and lower curved cover, described upper arcuate cover is arranged on the top of roll, described lower curved cover is positioned at the lower section of roll, the both sides of described thermal insulation cover have the fluting corresponding with welding-torch horizontal movement locus respectively, be provided with flexible steel plate protective cover, described flexible steel plate protective cover is provided with the through hole corresponding with welding gun in described fluting.
In a preferred embodiment of the present invention, described cross slide way is provided with the first screw rod thrust unit being connected with the first loading plate.
In a preferred embodiment of the present invention, described longitudinal rail is provided with the second screw rod thrust unit being connected with the second loading plate.
In a preferred embodiment of the present invention, described welding machine is CO2Gas shielded welding machine.
In a preferred embodiment of the present invention, described roll overlaying prosthetic device also includes a decelerator and variable-speed motor, and the outfan of described decelerator adopts positioning key to be connected with one end of roll, and the input of described decelerator is connected with variable-speed motor.
In a preferred embodiment of the present invention, being provided with assisted heating device in described thermal insulation cover, described assisted heating device is electrical heating wire or ceramic heater, and described thermal insulation cover inwall is provided with heat insulating mattress.
For solving above-mentioned technical problem, another technical solution used in the present invention is: provides a kind of restorative procedure, comprises the following steps:
Detection before built-up welding: old roll is detected a flaw, roll material is 60CrNiMo, including surface colour and ultrasonic inspection, it is ensured that roll inside and the equal zero defect in surface, the roll old if detected a flaw out has serious internal injury, then do not allow to carry out the Bead weld repair work of this roll again；
Preheating before welding: roll is put into electric furnace and preheats, it is desirable to preheating temperature 350 ~ 380 DEG C, in heating furnace, constant temperature keeps 8 ~ 10 hours；
Welding: roll is taken out in electric furnace, it is placed on two bearing blocks, cover upper arcuate cover, start variable-speed motor and carry out the rotation of roll, operate the first screw rod thrust unit and the second screw rod thrust unit, two root bead rifles are made to be respectively aligned to the both sides in the middle part of roll and move built-up welding from middle part to different ends, in weld deposit process, often cover once circulation just with contact type thermometric indicator in the middle part of roll and roll both ends of the surface carry out thermometric and clear up welding slag, ensure that interlayer temperature is within the scope of 320 ~ 350 DEG C, the power being reentered in electric furnace during lower than 320 DEG C to be heated or adjusting assisted heating device is heated；
Heat treatment: after welding, roll is immediately sent in electric furnace and carries out heat treatment, the burner hearth of electric furnace can not black furnace, initial temperature is within the scope of 320 ~ 350 DEG C, after putting into roll, furnace temperature is risen to 480 DEG C, it is incubated 2.5 ~ 3 hours, and makes roller temperature homogenization, stress-removal, slow cooling is to room temperature, annealing process requires that cooling rate is after 35 ~ 40 DEG C/h, roll cooling, detects as-welded hardness and macro-size and defect inspection；
Processing: roll is carried out roughing, then carries out the inspection of semifinished product, including penetrant inspection, hardness determination, geometry and roughing dimension control, after qualified, then carry out polish.
In a preferred embodiment of the present invention, in described welding step, first with 1 ~ 2 layer of transition zone of transition zone welding wire built-up welding, each built-up welding THICKNESS CONTROL is at 2.0mm, and afterwards with the continuous built-up welding working lining of working lining welding wire, each built-up welding THICKNESS CONTROL is at 2.5 ~ 3.0mm, overall built-up welding thickness is 18 ~ 20mm, in process, repeatedly with the model of arc, the arcuate segments in weld deposit process is detected, to guarantee the control of built-up welding arc.
The invention has the beneficial effects as follows: a kind of roll overlaying prosthetic device that the present invention points out and restorative procedure, built-up welding assembly is adopted to instead of part manual operation, reduce danger, and have employed thermal insulation cover especially, neither affect the work of welding gun, the loss of heat can be reduced again, reduce energy consumption, guarantee the technological temperature of roll overlaying, promote the quality of built-up welding, improve the work efficiency that roll overlaying is repaired.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of a kind of roll overlaying prosthetic device of the present invention and restorative procedure one preferred embodiment.
Detailed description of the invention
Technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Referring to Fig. 1, the embodiment of the present invention includes:
A kind of roll overlaying prosthetic device, including: two bearing blocks 2 and two groups of built-up welding assemblies 1, said two bearing block 2 is separately positioned on the two ends of roll 5, described two groups of built-up welding assemblies 1 are separately positioned on the both sides of roll 5, described two groups of built-up welding assemblies 1 include cross slide way 12 respectively, longitudinal rail 14 and welding machine 15, described cross slide way 12 is respectively arranged with the first loading plate 17, described longitudinal rail 14 is separately positioned on the first loading plate 17, described longitudinal rail 14 is provided with the second loading plate 18, described welding machine 15 is arranged on the second loading plate 18, described welding machine 15 includes the welding gun 13 of a sensing roll 5, thermal insulation cover 4 it is provided with between said two bearing block 2, reduce the loss of heat.
Described cross slide way 12 is paralleled with the axis of roll 5, described cross slide way 12 is perpendicular with longitudinal rail 14, described cross slide way 12 is provided with the first screw rod thrust unit 11 being connected with the first loading plate 17, first screw rod thrust unit 11 makes welding gun 13 moving axially along roll 5, described longitudinal rail 14 is provided with the second screw rod thrust unit 16 being connected with the second loading plate 18, second screw rod thrust unit 16 makes welding gun 13 moving radially along roll 5, flexible adjustment, is conducive to Automated condtrol.
Described thermal insulation cover 4 includes upper arcuate cover and lower curved cover, it is connected by snap close between described upper arcuate cover and lower curved cover, described upper arcuate cover is arranged on the top of roll 5, described lower curved cover is positioned at the lower section of roll 5, the both sides of described thermal insulation cover 4 have the fluting corresponding with welding gun 13 horizontal movement track respectively, flexible steel plate protective cover it is provided with in described fluting, described flexible steel plate protective cover is provided with the through hole corresponding with welding gun 13, welding gun 13 is along when moving axially of roll 5, promote flexible steel plate protective cover telescopic moving therewith, neither affect the movement of welding gun 13, the loss of heat can be reduced again.
Described welding machine 15 is CO2Gas shielded welding machine, built-up welding effective.
Described roll overlaying prosthetic device also includes a decelerator 3 and variable-speed motor 32, the outfan of described decelerator 3 adopts positioning key 31 to be connected with one end of roll 5, mount and dismount relatively convenient, the input of described decelerator 3 is connected with variable-speed motor 32, the rotary speed making roll 5 is adjustable, it is simple to the carrying out of built-up welding work.
Being provided with assisted heating device in described thermal insulation cover 4, described assisted heating device is electrical heating wire or ceramic heater, carries out auxiliary heating, promotes surfacing quality, described thermal insulation cover 4 inwall is provided with heat insulating mattress, reduce thermal loss, reduces energy consumption.
A kind of restorative procedure, comprises the following steps:
Detection before built-up welding: old roll 5 is detected a flaw, roll material is 60CrNiMo, including surface colour and ultrasonic inspection, it is ensured that roll 5 inside and the equal zero defect in surface, the roll old if detected a flaw out has serious internal injury, then do not allow to carry out the Bead weld repair work of this roll again；
Preheating before welding: roll 5 is put into electric furnace and preheats, it is desirable to preheating temperature 380 DEG C, in heating furnace, constant temperature keeps 9 hours；
Welding: roll 5 is taken out in electric furnace, it is placed on two bearing blocks 2, cover upper arcuate cover, start variable-speed motor 32 and carry out the rotation of roll 5, operate the first screw rod thrust unit 11 and the second screw rod thrust unit 16, two root bead rifles 13 are made to be respectively aligned to the both sides in the middle part of roll 5 and move built-up welding from middle part to different ends, in weld deposit process, often cover once circulation just with contact type thermometric indicator in the middle part of roll 5 and roll 5 both ends of the surface carry out thermometric and clear up welding slag, ensure that interlayer temperature is within the scope of 320 ~ 350 DEG C, the power being reentered in electric furnace during lower than 320 DEG C to be heated or adjusting assisted heating device is heated；
Heat treatment: after welding, roll is immediately sent in electric furnace and carries out heat treatment, the burner hearth of electric furnace can not black furnace, initial temperature is at 330 DEG C, after putting into roll, furnace temperature is risen to 480 DEG C, it is incubated 3 hours, and makes roller temperature homogenization, stress-removal, slow cooling is to room temperature, annealing process requires that cooling rate is after 40 DEG C/h, roll cooling, detects as-welded hardness and macro-size and defect inspection；
Processing: roll is carried out roughing, then carries out the inspection of semifinished product, including penetrant inspection, hardness determination, geometry and roughing dimension control, after qualified, then carry out polish.
In described welding step, first with transition zone 1 ~ 2 layer of transition zone of welding wire YD106-G built-up welding, middle segmental arc can built-up welding two-layer transition zone, as long as one layer of transition zone of the straight section built-up welding at two ends, each built-up welding THICKNESS CONTROL is at 2.0mm, afterwards with the continuous built-up welding working lining of working lining welding wire YD238-G, each built-up welding THICKNESS CONTROL is at 2.5 ~ 3.0mm, and overall built-up welding thickness is 18 ~ 20mm, in process, repeatedly with the model of arc, the arcuate segments in weld deposit process is detected, to guarantee the control of built-up welding arc.
In sum, a kind of roll overlaying prosthetic device that the present invention points out and restorative procedure, decrease artificial, improve processing safety and work efficiency, decrease thermal loss, reduce energy consumption and cost, improve the quality of roll overlaying.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. a roll overlaying prosthetic device, built-up welding for roll, including: two bearing blocks and two groups of built-up welding assemblies, said two bearing block is separately positioned on the two ends of roll, described two groups of built-up welding assemblies are separately positioned on the both sides of roll, it is characterized in that, described two groups of built-up welding assemblies include cross slide way respectively, longitudinal rail and welding machine, described cross slide way is respectively arranged with the first loading plate, described longitudinal rail is separately positioned on the first loading plate, described longitudinal rail is provided with the second loading plate, described welding machine is arranged on the second loading plate, described welding machine includes the welding gun of a sensing roll, it is provided with thermal insulation cover between said two bearing block.
2. roll overlaying prosthetic device according to claim 1, it is characterised in that described cross slide way is paralleled with the axis of roll, described cross slide way is perpendicular with longitudinal rail.
3. roll overlaying prosthetic device according to claim 1, it is characterized in that, described thermal insulation cover includes upper arcuate cover and lower curved cover, it is connected by snap close between described upper arcuate cover and lower curved cover, described upper arcuate cover is arranged on the top of roll, described lower curved cover is positioned at the lower section of roll, the both sides of described thermal insulation cover have the fluting corresponding with welding-torch horizontal movement locus respectively, it is provided with flexible steel plate protective cover in described fluting, described flexible steel plate protective cover is provided with the through hole corresponding with welding gun.
4. roll overlaying prosthetic device according to claim 1, it is characterised in that be provided with the first screw rod thrust unit being connected with the first loading plate on described cross slide way.
5. roll overlaying prosthetic device according to claim 1, it is characterised in that be provided with the second screw rod thrust unit being connected with the second loading plate on described longitudinal rail.
6. roll overlaying prosthetic device according to claim 1, it is characterised in that described welding machine is CO2Gas shielded welding machine.
7. roll overlaying prosthetic device according to claim 1, it is characterized in that, described roll overlaying prosthetic device also includes a decelerator and variable-speed motor, the outfan of described decelerator adopts positioning key to be connected with one end of roll, and the input of described decelerator is connected with variable-speed motor.
8. roll overlaying prosthetic device according to claim 1, it is characterised in that be provided with assisted heating device in described thermal insulation cover, described assisted heating device is electrical heating wire or ceramic heater, and described thermal insulation cover inwall is provided with heat insulating mattress.
9. one kind utilizes the restorative procedure that the arbitrary described roll overlaying prosthetic device of claim 1 ~ 8 carries out, it is characterised in that comprise the following steps:
Detection before built-up welding: old roll is detected a flaw, roll material is 60CrNiMo, including surface colour and ultrasonic inspection, it is ensured that roll inside and the equal zero defect in surface, the roll old if detected a flaw out has serious internal injury, then do not allow to carry out the Bead weld repair work of this roll again；
Preheating before welding: roll is put into electric furnace and preheats, it is desirable to preheating temperature 350 ~ 380 DEG C, in heating furnace, constant temperature keeps 8 ~ 10 hours；
Welding: roll is taken out in electric furnace, it is placed on two bearing blocks, cover upper arcuate cover, start variable-speed motor and carry out the rotation of roll, operate the first screw rod thrust unit and the second screw rod thrust unit, two root bead rifles are made to be respectively aligned to the both sides in the middle part of roll and move built-up welding from middle part to different ends, in weld deposit process, often cover once circulation just with contact type thermometric indicator in the middle part of roll and roll both ends of the surface carry out thermometric and clear up welding slag, ensure that interlayer temperature is within the scope of 320 ~ 350 DEG C, the power being reentered in electric furnace during lower than 320 DEG C to be heated or adjusting assisted heating device is heated；
Heat treatment: after welding, roll is immediately sent in electric furnace and carries out heat treatment, the burner hearth of electric furnace can not black furnace, initial temperature is within the scope of 320 ~ 350 DEG C, after putting into roll, furnace temperature is risen to 480 DEG C, it is incubated 2.5 ~ 3 hours, and makes roller temperature homogenization, stress-removal, slow cooling is to room temperature, annealing process requires that cooling rate is after 35 ~ 40 DEG C/h, roll cooling, detects as-welded hardness and macro-size and defect inspection；
Processing: roll is carried out roughing, then carries out the inspection of semifinished product, including penetrant inspection, hardness determination, geometry and roughing dimension control, after qualified, then carry out polish.
10. restorative procedure according to claim 1, it is characterized in that, in described welding step, first with 1 ~ 2 layer of transition zone of transition zone welding wire built-up welding, each built-up welding THICKNESS CONTROL is at 2.0mm, afterwards with the continuous built-up welding working lining of working lining welding wire, each built-up welding THICKNESS CONTROL is at 2.5 ~ 3.0mm, and overall built-up welding thickness is 18 ~ 20mm, in process, repeatedly with the model of arc, the arcuate segments in weld deposit process is detected, to guarantee the control of built-up welding arc.
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|---|---|---|---|
| CN201610371404.0A CN105798424B (en) | 2016-05-31 | 2016-05-31 | A kind of roll overlaying prosthetic device and restorative procedure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610371404.0A CN105798424B (en) | 2016-05-31 | 2016-05-31 | A kind of roll overlaying prosthetic device and restorative procedure |
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| CN105798424A true CN105798424A (en) | 2016-07-27 |
| CN105798424B CN105798424B (en) | 2018-01-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107283020A (en) * | 2017-08-17 | 2017-10-24 | 安徽卓煌机械设备有限公司 | A kind of clinker breaker roll roll surface heats prosthetic device |
| CN107400768A (en) * | 2017-08-17 | 2017-11-28 | 安徽卓煌机械设备有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107470743A (en) * | 2017-08-07 | 2017-12-15 | 豪利机械(苏州)有限公司 | The surface overlaying technique of deep-sea oil mechanical workpieces |
| CN109877418A (en) * | 2019-01-29 | 2019-06-14 | 江苏省沙钢钢铁研究院有限公司 | A kind of build-up welding repair method of plate rolling side guide |
| CN112122742A (en) * | 2020-09-11 | 2020-12-25 | 广州莹冲涡轮增压器有限公司 | Automatic repairing device for roll surface of cement roll squeezer |
| CN114192582A (en) * | 2021-12-06 | 2022-03-18 | 江苏锦航机械制造有限公司 | Roller cleaning device with crack repairing structure |
| CN114260608A (en) * | 2022-01-13 | 2022-04-01 | 广东韶钢松山股份有限公司 | Welding device and using method thereof |
| CN114371220A (en) * | 2021-12-28 | 2022-04-19 | 唐山曹妃甸工业区长白机电设备检修有限公司 | Continuous casting roll system fatigue strength detection device and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470743A (en) * | 2017-08-07 | 2017-12-15 | 豪利机械(苏州)有限公司 | The surface overlaying technique of deep-sea oil mechanical workpieces |
| CN107283020A (en) * | 2017-08-17 | 2017-10-24 | 安徽卓煌机械设备有限公司 | A kind of clinker breaker roll roll surface heats prosthetic device |
| CN107400768A (en) * | 2017-08-17 | 2017-11-28 | 安徽卓煌机械设备有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107400768B (en) * | 2017-08-17 | 2019-04-16 | 惠州市光大水泥企业有限公司 | A kind of manufacture of cement pressure roller roll surface built-up welding flame pre-heating system |
| CN107283020B (en) * | 2017-08-17 | 2019-12-03 | 江西银杉白水泥股份有限公司 | A kind of clinker breaker roll roll surface heating prosthetic device |
| CN109877418A (en) * | 2019-01-29 | 2019-06-14 | 江苏省沙钢钢铁研究院有限公司 | A kind of build-up welding repair method of plate rolling side guide |
| CN109877418B (en) * | 2019-01-29 | 2020-11-13 | 江苏省沙钢钢铁研究院有限公司 | Surfacing repair method for coiled side guide plate |
| CN112122742A (en) * | 2020-09-11 | 2020-12-25 | 广州莹冲涡轮增压器有限公司 | Automatic repairing device for roll surface of cement roll squeezer |
| CN114192582A (en) * | 2021-12-06 | 2022-03-18 | 江苏锦航机械制造有限公司 | Roller cleaning device with crack repairing structure |
| CN114371220A (en) * | 2021-12-28 | 2022-04-19 | 唐山曹妃甸工业区长白机电设备检修有限公司 | Continuous casting roll system fatigue strength detection device and method |
| CN114371220B (en) * | 2021-12-28 | 2024-04-02 | 唐山曹妃甸工业区长白机电设备检修有限公司 | Continuous casting roller system fatigue strength detection device and method |
| CN114260608A (en) * | 2022-01-13 | 2022-04-01 | 广东韶钢松山股份有限公司 | Welding device and using method thereof |
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|---|---|
| CN105798424B (en) | 2018-01-09 |
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