CN106077891A - Roll surface of roller press bead-welding technology - Google Patents
Roll surface of roller press bead-welding technology Download PDFInfo
- Publication number
- CN106077891A CN106077891A CN201610528664.4A CN201610528664A CN106077891A CN 106077891 A CN106077891 A CN 106077891A CN 201610528664 A CN201610528664 A CN 201610528664A CN 106077891 A CN106077891 A CN 106077891A
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- Prior art keywords
- welding
- roll surface
- built
- roller press
- width
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Classifications
-
- 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
-
- 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
- B23K9/235—Preliminary treatment
Abstract
The invention provides roll surface of roller press bead-welding technology, including surface treatment procedure；Carrying out flaw detection operation；Surface preheating procedure, sublevel heats up and then makes interlayer temperature reach more than 250 DEG C；Prime coat built-up welding operation, omnidistance heating ensures interlayer temperature more than 250 DEG C；Cushion built-up welding operation；Hardstanding built-up welding operation.Present invention process simple and reasonable steps, improves the overlap joint flatness of roll surface, effectively prevents crackle from producing.
Description
Technical field
The invention belongs to technique for overlaying field, particularly relate to a kind of roll surface of roller press build-up welding repair process.
Background technology
Roll squeezer be modern develop, the cement industry milling equipment of exploitation, it can extremely low energy resource consumption with run into
Under this, it is achieved increasing substantially of cement slurry and finished cement yield, have compared with traditional cement grinding system significantly
Energy-saving effect；Relative motion at a slow speed made by two rollers of roll squeezer, and one of them roller is fixed, and another roller can make level
Sliding in direction, material is pulverized in the gap of double rollers.Double rollers crackle if as roll surface before operation starts can cause
Workpiece easily overall fracture, the risk of self is the highest；Often because pre-heating temperature elevation is too fast during built-up welding, to such an extent as to should
Power releasing effect is the best, causes again occurring in weld deposit process crackle；Cushion built-up welding temperature variation issues causes workpiece built-up welding
Time material can not well welding, crack.
Summary of the invention
The defect existed in view of above-mentioned prior art, it is an object of the invention to provide a kind of roll surface of roller press bead-welding technology,
The overlap joint flatness of roll surface can be improved, effectively prevent crackle from producing.
The present invention is achieved through the following technical solutions above-mentioned purpose: roll surface of roller press bead-welding technology, including surface science and engineering
Sequence, carries out polishing rust cleaning to full roll surface；Carrying out flaw detection operation, colours roll body and diameter is measured in ultrasonic examination；Surface
Preheating procedure, to the rotation that remains a constant speed in the warm of roll body surface, sublevel heat up so that make interlayer temperature reach 250 DEG C with
On；Prime coat built-up welding operation, uses the first welding wire repair welding mother metal roll surface to workpiece preliminary dimension, does and once eliminate during every 25mm thickness
Stress, omnidistance heating ensures interlayer temperature more than 250 DEG C；Cushion built-up welding operation, uses buffering thick for the second welding wire built-up welding 6mm
Layer, omnidistance heating ensures interlayer temperature more than 250 DEG C；Hardstanding built-up welding operation, uses the 3rd welding wire built-up welding hardstanding to size
Thickness.
Concrete, the hardness of described first welding wire is 20-30HRC.
Concrete, the hardness of described second welding wire is 22-24HRC.
Concrete, the hardness of described 3rd welding wire is 58-62HRC.
Concrete, the arc voltage in described prime coat built-up welding operation is 28-32V, and welding current is 300A-400A, roller
Face rotating speed is 350-400mm/min, the molten a width of 18-20mm of overlap joint.
Concrete, the arc voltage in described cushion built-up welding operation is 30-33V, and welding current is 480A-550A, roller
Face rotating speed is 380-450mm/min, the molten a width of 15-16mm of overlap joint.
Concrete, described hardstanding built-up welding operation includes the first two layer stack welder's sequence, intermediate layer built-up welding operation, surface rib layer
Built-up welding operation.
Concrete, the arc voltage in described the first two layer stack welder's sequence is 30-33V, and welding current is 480A-550A, roller
Upper thread rotating speed is 400-500mm/min, the 1/3 of the molten a width of previous weld width of overlap joint.
Concrete, the arc voltage in described intermediate layer built-up welding operation is 30-33V, and welding current is 480A-550A, roller
Upper thread rotating speed is 400-500mm/min, the 1/2 of the molten a width of previous weld width of overlap joint.
Concrete, the arc voltage in described rib layer stack weldering step is 28-30V, and welding current is 380A-450A, roller
Upper thread rotating speed is 150-250mm/min, overlap joint molten a width of 0.
Compared with prior art, the invention has the beneficial effects as follows: processing step advantages of simple, carrying out flaw detection effectively prevents from making
Before industry, the crackle risk of workpiece itself causes the situation adding fracture in man-hour；Metal structure is effectively carried out carefully by sublevel preheating procedure
Change and subsequent handling eliminates stress, preventing from weld deposit process occurs again crackle；Cushion built-up welding whole process temperature control is at 250 DEG C
Make the weldability of material during workpiece built-up welding more preferable；Roll squeezer roll body non-welding surface pearl, overlap joint uniform ground, effective anti-crack arrest
Stricture of vagina, anti-wear performance is good.
Detailed description of the invention
Hereinafter the most in conjunction with the embodiments, the detailed description of the invention of the present invention is described in further detail, so that the technology of the present invention
Scheme is more readily understood, grasps, but the invention is not limited in this.Experimental technique described in following embodiment, as without special theory
Bright, it is conventional method；Described reagent and material, if no special instructions, the most commercially obtain.
Embodiment 1:
Roll surface of roller press bead-welding technology, including surface treatment procedure, carries out polishing rust cleaning to full roll surface；Carrying out flaw detection work
Sequence, colours roll body and diameter is measured in ultrasonic examination；Surface preheating procedure, keeps even in the warm of roll body surface
Speed rotates, and sublevel heats up and then makes interlayer temperature reach more than 250 DEG C；Prime coat built-up welding operation, uses the first welding wire repair welding female
Material roll surface to workpiece preliminary dimension, does during every 25mm thickness and once eliminates stress depending on wear of work degree, and omnidistance heating ensures
Interlayer temperature more than 250 DEG C；Cushion built-up welding operation, uses cushion thick for the second welding wire built-up welding 6mm, omnidistance heating to ensure layer
Between temperature more than 250 DEG C；Refrigerating work procedure, natural cooling makes the interlayer temperature of cushion reach less than 80 DEG C；Hardstanding heap welder
Sequence, uses the 3rd welding wire built-up welding hardstanding to dimensional thickness.The hardness of the first welding wire is 20HRC, and its tenor is carbon
0.4%, manganese 14%, silicon 0.7%, chromium 14.1%.The hardness of the second welding wire is 22HRC, and its tenor is carbon 0.4%, manganese
14%, silicon 0.7%, chromium 14.1%.The hardness of the 3rd welding wire is 58HRC, its tenor be carbon 5%, manganese 1.1%, silicon 1%,
Chromium 25.5%.Arc voltage in prime coat built-up welding operation is 28V, and welding current is 400A, and roll surface rotating speed is 350mm/min,
The molten a width of 20mm of overlap joint.Arc voltage in cushion built-up welding operation is 30V, and welding current is 550A, and roll surface rotating speed is
380mm/min, the molten a width of 16mm of overlap joint.Hardstanding built-up welding operation includes the first two layer stack welder's sequence, intermediate layer built-up welding operation, surface
Rib layer stack welder's sequence.Arc voltage in the first two layer stack welder's sequence is 30V, and welding current is 550A, and roll surface line rotating speed is
400mm/min, the 1/3 of the molten a width of previous weld width of overlap joint.Arc voltage in intermediate layer built-up welding operation is 30V, welding electricity
Stream is 550A, and roll surface line rotating speed is 400mm/min, the 1/2 of the molten a width of previous weld width of overlap joint.In rib layer stack weldering step
Arc voltage is 28V, and welding current is 450A, and roll surface line rotating speed is 150mm/min, overlap joint molten a width of 0.
Embodiment 2:
Roll surface of roller press bead-welding technology, including surface treatment procedure, carries out polishing rust cleaning to full roll surface；Carrying out flaw detection work
Sequence, colours roll body and diameter is measured in ultrasonic examination；Surface preheating procedure, keeps even in the warm of roll body surface
Speed rotates, and sublevel heats up and then makes interlayer temperature reach more than 250 DEG C；Prime coat built-up welding operation, uses the first welding wire repair welding female
Material roll surface to workpiece preliminary dimension, does during every 25mm thickness and once eliminates stress depending on wear of work degree, and omnidistance heating ensures
Interlayer temperature more than 250 DEG C；Cushion built-up welding operation, uses cushion thick for the second welding wire built-up welding 6mm, omnidistance heating to ensure layer
Between temperature more than 250 DEG C；Refrigerating work procedure, natural cooling makes the interlayer temperature of cushion reach less than 80 DEG C；Hardstanding heap welder
Sequence, uses the 3rd welding wire built-up welding hardstanding to dimensional thickness.The hardness of the first welding wire is 25HRC, and its tenor is carbon
0.4%, manganese 14%, silicon 0.7%, chromium 14.1%.The hardness of the second welding wire is 23HRC, and its tenor is carbon 0.4%, manganese
14%, silicon 0.7%, chromium 14.1%.The hardness of the 3rd welding wire is 60HRC, its tenor be carbon 5%, manganese 1.1%, silicon 1%,
Chromium 25.5%.Arc voltage in prime coat built-up welding operation is 30V, and welding current is 350A, and roll surface rotating speed is 375mm/min,
The molten a width of 19mm of overlap joint.Arc voltage in cushion built-up welding operation is 31V, and welding current is 515A, and roll surface rotating speed is
415mm/min, the molten a width of 15.5mm of overlap joint.Hardstanding built-up welding operation includes the first two layer stack welder's sequence, intermediate layer built-up welding operation, table
Face rib layer stack welder's sequence.Arc voltage in the first two layer stack welder's sequence is 31V, and welding current is 515A, and roll surface line rotating speed is
450mm/min, the 1/3 of the molten a width of previous weld width of overlap joint.Arc voltage in intermediate layer built-up welding operation is 31V, welding electricity
Stream is 515A, and roll surface line rotating speed is 450mm/min, the 1/2 of the molten a width of previous weld width of overlap joint.In rib layer stack weldering step
Arc voltage is 29V, and welding current is 415A, and roll surface line rotating speed is 200mm/min, overlap joint molten a width of 0.
Embodiment 3:
Roll surface of roller press bead-welding technology, including surface treatment procedure, carries out polishing rust cleaning to full roll surface；Carrying out flaw detection work
Sequence, colours roll body and diameter is measured in ultrasonic examination；Surface preheating procedure, keeps even in the warm of roll body surface
Speed rotates, and sublevel heats up and then makes interlayer temperature reach more than 250 DEG C；Prime coat built-up welding operation, uses the first welding wire repair welding female
Material roll surface to workpiece preliminary dimension, does during every 25mm thickness and once eliminates stress depending on wear of work degree, and omnidistance heating ensures
Interlayer temperature more than 250 DEG C；Cushion built-up welding operation, uses cushion thick for the second welding wire built-up welding 6mm, omnidistance heating to ensure layer
Between temperature more than 250 DEG C；Refrigerating work procedure, natural cooling makes the interlayer temperature of cushion reach less than 80 DEG C；Hardstanding heap welder
Sequence, uses the 3rd welding wire built-up welding hardstanding to dimensional thickness.The hardness of the first welding wire is 30HRC, and its tenor is carbon
0.4%, manganese 14%, silicon 0.7%, chromium 14.1%.The hardness of the second welding wire is 24HRC, and its tenor is carbon 0.4%, manganese
14%, silicon 0.7%, chromium 14.1%.The hardness of the 3rd welding wire is 62HRC, its tenor be carbon 5%, manganese 1.1%, silicon 1%,
Chromium 25.5%.Arc voltage in prime coat built-up welding operation is 32V, and welding current is 300A, and roll surface rotating speed is 400mm/min,
The molten a width of 18mm of overlap joint.Arc voltage in cushion built-up welding operation is 33V, and welding current is 480A, and roll surface rotating speed is
450mm/min, the molten a width of 15mm of overlap joint.Hardstanding built-up welding operation includes the first two layer stack welder's sequence, intermediate layer built-up welding operation, surface
Rib layer stack welder's sequence.Arc voltage in the first two layer stack welder's sequence is 33V, and welding current is 480A, and roll surface line rotating speed is
500mm/min, the 1/3 of the molten a width of previous weld width of overlap joint.Arc voltage in intermediate layer built-up welding operation is 33V, welding electricity
Stream is 480A, and roll surface line rotating speed is 500mm/min, the 1/2 of the molten a width of previous weld width of overlap joint.In rib layer stack weldering step
Arc voltage is 30V, and welding current is 380A, and roll surface line rotating speed is 250mm/min, overlap joint molten a width of 0.
The present invention repairs the processing step advantages of simple of roll surface, and carrying out flaw detection effectively prevents the crackle of workpiece itself before operation
Risk causes the situation adding fracture in man-hour；Metal structure is effectively refined and disappears in subsequent handling by sublevel preheating procedure
De-stress, prevents from again occurring in weld deposit process crackle；Cushion built-up welding whole process temperature control is material when 250 DEG C make workpiece built-up welding
Weldability more preferable；Roll squeezer roll body non-welding surface pearl, overlap joint uniform ground, effectively prevent crackle, and anti-wear performance is good.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, not
On the premise of departing from the invention design, it is also possible to making some deformation and improvement, these broadly fall into the protection model of the present invention
Enclose.
Claims (10)
1. roll surface of roller press bead-welding technology, it is characterised in that including:
Surface treatment procedure, carries out polishing rust cleaning to full roll surface；
Carrying out flaw detection operation, colours roll body and diameter is measured in ultrasonic examination；
Surface preheating procedure, to the rotation that remains a constant speed in the warm of roll body surface, sublevel heats up and then makes interlayer temperature reach
More than 250 DEG C；
Prime coat built-up welding operation, uses the first welding wire repair welding mother metal roll surface to workpiece preliminary dimension, does and once disappear during every 25mm thickness
De-stress, omnidistance heating ensures interlayer temperature more than 250 DEG C；
Cushion built-up welding operation, use cushion thick for the second welding wire built-up welding 6mm, omnidistance heating ensure interlayer temperature 250 DEG C with
On；
Hardstanding built-up welding operation, uses the 3rd welding wire built-up welding hardstanding to dimensional thickness.
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: the hardness of described first welding wire is
20-30HRC。
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: the hardness of described second welding wire is
22-24HRC。
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: the hardness of described 3rd welding wire is
58-62HRC。
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: in described prime coat built-up welding operation
Arc voltage is 28-32V, and welding current is 300A-400A, and roll surface rotating speed is 350-400mm/min, the molten a width of 18-of overlap joint
20mm。
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: in described cushion built-up welding operation
Arc voltage is 30-33V, and welding current is 480A-550A, and roll surface rotating speed is 380-450mm/min, the molten a width of 15-of overlap joint
16mm。
Roll surface of roller press bead-welding technology the most according to claim 1, it is characterised in that: described hardstanding built-up welding operation includes
The first two layer stack welder's sequence, intermediate layer built-up welding operation, surface rib layer stack welder's sequence.
Roll surface of roller press bead-welding technology the most according to claim 7, it is characterised in that: in described the first two layer stack welder's sequence
Arc voltage is 30-33V, and welding current is 480A-550A, and roll surface line rotating speed is 400-500mm/min, and overlap joint is molten a width of previous
The 1/3 of weld width.
Roll surface of roller press bead-welding technology the most according to claim 7, it is characterised in that: in described intermediate layer built-up welding operation
Arc voltage is 30-33V, and welding current is 480A-550A, and roll surface line rotating speed is 400-500mm/min, and overlap joint is molten a width of previous
The 1/2 of weld width.
Roll surface of roller press bead-welding technology the most according to claim 7, it is characterised in that: in described rib layer stack weldering step
Arc voltage be 28-30V, welding current is 380A-450A, and roll surface line rotating speed is 150-250mm/min, overlap joint molten a width of 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528664.4A CN106077891A (en) | 2016-07-07 | 2016-07-07 | Roll surface of roller press bead-welding technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528664.4A CN106077891A (en) | 2016-07-07 | 2016-07-07 | Roll surface of roller press bead-welding technology |
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| Publication Number | Publication Date |
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| CN106077891A true CN106077891A (en) | 2016-11-09 |
Family
ID=57213151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610528664.4A Pending CN106077891A (en) | 2016-07-07 | 2016-07-07 | Roll surface of roller press bead-welding technology |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513950A (en) * | 2016-12-05 | 2017-03-22 | 安徽兴林机械集团有限公司 | Grinding roller rotating surfacing process |
| CN109226935A (en) * | 2017-07-10 | 2019-01-18 | 天津大学 | Plug build-up welding repair method and plug surfacing layer structure |
| CN113001117A (en) * | 2021-03-05 | 2021-06-22 | 海南立磨焊接工程有限公司 | Surfacing repair method for worn roller |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513950A (en) * | 2016-12-05 | 2017-03-22 | 安徽兴林机械集团有限公司 | Grinding roller rotating surfacing process |
| CN109226935A (en) * | 2017-07-10 | 2019-01-18 | 天津大学 | Plug build-up welding repair method and plug surfacing layer structure |
| CN109226935B (en) * | 2017-07-10 | 2020-08-07 | 天津大学 | Core rod surfacing repair method and core rod surfacing layer tissue structure |
| CN113001117A (en) * | 2021-03-05 | 2021-06-22 | 海南立磨焊接工程有限公司 | Surfacing repair method for worn roller |
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