CN108453467A - A method of manufacturing bending roll using technology for repairing surfacing - Google Patents
A method of manufacturing bending roll using technology for repairing surfacing Download PDFInfo
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- CN108453467A CN108453467A CN201810258008.6A CN201810258008A CN108453467A CN 108453467 A CN108453467 A CN 108453467A CN 201810258008 A CN201810258008 A CN 201810258008A CN 108453467 A CN108453467 A CN 108453467A
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
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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
- 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
- B23K35/3033—Ni as the principal 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
- B23K35/40—Making wire or rods for soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Arc Welding In General (AREA)
Abstract
The present invention relates to a kind of methods manufacturing bending roll using technology for repairing surfacing, belong to technique for overlaying field.Roll surface non-stick steel and overlaying method with long service life after a kind of built-up welding of present invention offer.The method of the present invention includes that suitable wlding and adjusting process parameter is selected to carry out built-up welding work, and wlding is nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire and matching solder flux, and heap postwelding deposition chemical component weight ratio is：6~8 ︰ 80~86 of Cr ︰ Al ︰ Ni=6~8 ︰；The built-up welding work includes the following steps：Roll centre pretreatment → flaw detection → adjusting process parameter and built-up welding → machining → product inspection.Bead weld repair is carried out using the method for the present invention, makes bending roll, need not be preheated before weldering, not needed built-up welding transition zone, interlayer and need not keep the temperature, saves built-up welding step, while the built-up welding time is short, wlding usage amount is few, reaches the requirement of low-carbon environment-friendly.
Description
Technical field
The present invention relates to a kind of methods manufacturing bending roll using technology for repairing surfacing, belong to welding technology field.
Background technology
Hot continuous rolling Coil Box is installed between roughing end rack and finish rolling flying shear, its work is after extreme trace time is thrown steel
Intermediate base high speed centerless coils into a coil of strip, then reversed uncoiling again, while intermediate base being sent to mm finishing mill unit and is rolled.
In process of production, to accelerate rhythm of production, Coil Box generally uses the working method of dual station：After finish rolling head racks sting steel,
Continue uncoiling work to uncoiling station the steel-coil transferring at station is batched, allows batch station and continue as batching next intermediate base and prepare.
Bending roll is the critical component of Coil Box, its main function is that the intermediate base that will be rolled assists in rolls.Bending roll is in fourth hand
Before making beginning and end, 1200~1300 DEG C of high temperature subject always, and subject the friction of hot-rolled intermediate billet, work item
Part is extremely severe.Due to the particularity of operating condition, the service life of bending roll is short, usual less than 3 months climbing steel；And
Roll surface also steel bonding during use, this directly affects the operating efficiency of milling train, the quality of steel, the expense of repair, final to influence
The manufacturing cost of steel.
The technique for repairing, making bending roll at present is as follows：Prepare roll centre → flaw detection → weld preheating → built-up welding transition
Layer and keep the temperature → built-up welding working lining and keep the temperature → post weld heat treatment → postwelding machining → finished product detection → finished product oiling, packaging etc.
Complex process flow.The welding wire of built-up welding bending roll working lining is generally martensite type alloy welding wire, above-mentioned martensite type heap at present
Metal is welded, there is air quenching characteristic, is martensitic structure under high temperature built-up welding, and have Carbide Precipitation, built-up welding back roller surface hardness reaches
45~55HRC.It needs to be heat-treated to meet requirements, the postweldings such as repair hardness, stable, the elimination welding stress of metallographic structure,
Specifically make carbide disperse educt on the matrix of built-up welding working lining metal, and post-curing can be formed in this way.Simultaneously
Since the crack sensitivity of this kind of alloying component is high, weld preheating is needed, in the welding process heat preservation and postheating measure；This
Outside in order to improve fusion area performance, built-up welding transition zone is needed, later built-up welding working lining again.Utilize this martensite type alloy welding wire heap
Postwelding, bending roll case hardness are higher than 45HRC, and still have roll surface steel bonding in use and service life is short asks
Topic.Since roll surface steel bonding can influence steel product quality, bending roll can be caused to descend machine in advance when serious, new roller is installed.On simultaneously as
It states overlaying method and needs weld preheating and isothermal holding etc. in weld deposit process, wherein temperature is generally in preheating and isothermal holding
200~400, DEG C even higher temperature.To meet the temperature requirement of weld deposit process, electrical heating, heated by gas etc. are generally taken
Method, this keeps the working environment of overlay-operation personnel very poor, while the stabilization for being unfavorable for Bead weld repair, making bending roll quality.
Therefore, it selects suitable wlding and uses a kind of convenience, easy-operating overlaying method to meet roll surface non-stick steel after built-up welding and make
With long lifespan, this is an important issue technique for overlaying personnel.
Invention content
The present invention provides a kind of method manufacturing bending roll using technology for repairing surfacing, the bending roller surface of heap postwelding
Service life is long simultaneously for non-stick steel.
A kind of method manufacturing bending roll using technology for repairing surfacing of the present invention includes selecting suitable wlding and adjustment work
Skill parameter carries out built-up welding work, it is characterised in that：
The wlding be nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire and matching solder flux, heap postwelding deposition chemistry at
It is 6~8 ︰ 80~86 of Cr ︰ Al ︰ Ni=6~8 ︰ to divide weight ratio；
The built-up welding work includes the following steps：Roll centre pretreatment → flaw detection → adjusting process parameter and built-up welding → machine
Processing → product inspection.
Wherein, the crust of the nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is pure nickel band, and wherein medicine core is by following weight hundred
The group of ratio is divided to be grouped as：Metallic aluminium 13.4~44.5%, crome metal：12.6~42.2%, fluorite：5~13.3%, metallic nickel
Powder：0~69%.
Specifically, medicine core is grouped as by the group of following weight percentage in above-mentioned flux-cored wire：Metallic aluminium 22.2~36%,
Crome metal：21~33%, fluorite：5.8~10%, metal nickel powder：21~61%.
Preferably, medicine core is grouped as by the group of following weight percentage in above-mentioned flux-cored wire：Metallic aluminium 26.8~
31.4%, crome metal：24.6~28.8%, fluorite：7.6~8.8%, metal nickel powder：31~41%.
Specifically, metallic aluminium in the medicine core of above-mentioned flux-cored wire, crome metal, fluorite and metal nickel powder grain size be respectively：
Metallic aluminium：40~60 mesh, crome metal：70~90 mesh, fluorite：50~70 mesh, metal nickel powder：100~140 mesh.
Preferably, the grain size of metallic aluminium in medicine core, crome metal, fluorite and metal nickel powder is respectively：Metallic aluminium：50 mesh, gold
Belong to chromium：80 mesh, fluorite：60 mesh, metal nickel powder：120 mesh.
Wherein, the ratio that the weight of medicine core accounts for flux-cored wire total weight in the nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is
20~50%.
Above-mentioned flux-cored wire makes according to the preparation method of general flux-cored wire, specially：Using pure nickel band as crust raw material,
Using metallic aluminium, crome metal, fluorite and metal nickel powder as drug core component, cut by nickel strap, nickel strap goes oil drying, medicine core dispensing
It is dry, in rolling, medicine core filling crust, wire drawing at different diameter specifications flux-cored wire.
Using above-mentioned flux-cored wire built-up welding bending roll, the metallic gold phase constitution of built-up welding working lining is austenite, due to Ovshinsky
There is flow harden performance, postwelding can further increase the hardness of roll surface to working lining cure process for body metallographic structure.Specifically
, heap postwelding working lining hardness is more than 32HRC, and by carrying out flow harden processing to it after subsequent turnery processing, roll surface is hard
Degree is more than 54HRC, this fully meets the upper machine job requirement of bending roll.Simultaneously compared with overlaying method before, former wlding
It is the structure that martensite adds carbide in the metallographic structure that built-up welding working lining is formed, this just needs to protect by weld preheating, interlayer
The processes such as temperature, post weld heat treatment come ensure repair, make bending roll quality and built-up welding working lining hardness requirement.But it uses
Pervious overlaying method heap postwelding, roll surface steel bonding problem is still unresolved, while service life is short.
Wherein, the roll centre pretreatment is that old roller turning or new roller make.
Specifically, the old roller turning does the fatigue layer of old roller surface and surface defect turning using old roller as roll centre
Only, make a diameter of (D-6) mm of roll surface, i.e., reserve the working lining of 6mm within the scope of bending roll finished diameter, wherein D is bending roll
The diameter (rear same) of finished product.If after turning surface fatigue layer and surface defect, roll centre diameter is unsatisfactory for (D-6) mm, will carry out
Soldering heap is welded to this size.
Specifically, the new roller makes, made of a kind of low-carbon alloy forged steel of obdurability or middle carbon alloy forged steel new
A diameter of (D-6) mm of roll surface is reserved the working lining of 6mm, wherein tolerance by roller, built-up welding that is, within the scope of bending roll finished diameter
For ± 0.10mm.
Wherein, flaw detection in built-up welding work, using magnetic particle testing surface defect, ultrasonic examination checks internal lack
It falls into, when without influencing overlay-operation and the defect used, i.e., flaw detection is qualified, then carries out follow-up built-up welding work.
Specifically, above-mentioned flaw detection does not allow again if bending roll (including roll centre inside and roll surface) has serious internal injury
Built-up welding work is carried out, reselects other old rollers, then carry out turning and flaw detection.
Wherein, adjusting process parameter in built-up welding work, specially adjusts welding current, weldingvoltage, speed of welding, welding wire
Stem elongation, welding wire postposition amount, amount of lap etc..By adjusting above-mentioned built-up welding condition, accurately controlling built-up welding running parameter makes heap welder
Make smooth, the quality of guarantee surfacing quality and bending roll finished product.
Wherein, built-up welding in built-up welding work, cleans out facing surface before weldering, using automatic submerged-arc welding method, with nickel chromium triangle
Aluminium profiles nickel-base alloy flux-cored wire and matching solder flux carry out built-up welding work, keep roll surface straight along the cylindrical surface built-up welding of bending roll
Diameter is at least (D+2~5) mm, i.e., more 2~5mm of built-up welding keep for follow-up machining steps, and wherein roll surface is smooth, while ensureing curved
Curved roll machining back roller radius surface direction is effectively no less than 3.0mm using thickness, and wherein tolerance is ± 0.05mm.
In built-up welding work, facing surface is cleaned up first, it is ensured that without greasy dirt, no moisture and other sundries, then adopt
Built-up welding is carried out with above-mentioned wlding and method.Because facing surface cleans, deposition chemical composition will not be by dirt in welding wire when built-up welding
Dye ensures that the physics of weld, chemical property are stablized.If cleaning of surfaces to be welded is not clean, will appear at built-up welding working lining
The defects of white point, stomata.
Using above-mentioned nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire Bead weld repair, make bending roll.Bending roll after upper machine exists
Assist intermediate base coiled at a high temperature of 1200~1300 DEG C, due in above-mentioned flux-cored wire metallic aluminium, crome metal and metallic nickel with
And the pure nickel band of crust is all high temperature alloy element, has high-temperature stability and high hardness through built-up welding back roller face；Meanwhile built-up welding
The chemical component difference of the chemical composition of metal and the intermediate base of rolling (being wherein mostly ordinary carbon steel) is big, and the institutional framework of the two is poor
Different big, this also determines that the possibility that bending roll roll surface and coil of strip interact at high temperature is small, this fundamentally solves roll surface
The problem of steel bonding.Therefore, the bending roll service life of heap postwelding is long.Inventor obtained by a large amount of built-up welding working practice, when
When being effectively not less than 3.0mm using thickness of the roll surface radial direction of heap postwelding bending roll, the service life of bending roll is just at double
Increase, 3~4 times or more of the service life of specially former overlaying method.
Wherein, it is machined in built-up welding work, when the bending roll of heap postwelding is cooled to room temperature, then carries out turning and flow harden
Processing makes a diameter of D mm of roll surface, tolerance be ± 0.10mm.Bending roll case hardness further increases after handling in this way, substantially
Meet the technology requirement that bending roll uses on the machine.Specifically, as roll surface hardness >=52HRC of bending roll, and meet wear-resisting want
It asks, just bending roll is allowed to use on the machine.
Wherein, product inspection in built-up welding work, carries out magnetic powder detection, wherein without folder by heap postwelding bending roll finished product
The defects of slag, incomplete fusion, crackle is qualification, then by qualified bending roll oil surface, packaging with for use.
Do not needed during using the above method built-up welding bending roll weld preheating, working lining heat preservation, built-up welding transition zone and
Post weld heat treatment and etc..Because overlaying method of the present invention is using nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire heap postwelding working lining
Metallic gold phase constitution is austenite, is not undergone phase transition in the welding process；Simultaneously after above-mentioned welding wire built-up welding fusion area good toughness,
Roll surface is not easy to break, wearing layer is not easy to peel off, and built-up welding working lining structure property is stable, welding stress is small, does not need at postwelding heat
Reason.
Using former overlaying method, weld preheating is necessary process, and the main purpose of preheating is to reduce heap in weld deposit process
The cooling velocity of metal heat affected area is welded, tendency of hardenability is reduced and reduces welding stress, prevents base material and deposited metal in built-up welding
It cracks in the process.Isothermal holding is needed in weld deposit process simultaneously, and martensitic traoformation occurs to avoid deposited metal and is quenched
Fiery effect improves the toughness of base metal fusion zone, prevents roll surface fracture or wearing layer from peeling off.There must be post weld heat treatment simultaneously, with
Improve postwelding tissue, eliminate welding stress effect etc..
Welding wire was martensite type alloy welding wire in overlaying method in the past, to ensure built-up welding working performance and deposition chemical composition
It is required that needing built-up welding transition zone and working lining, works at the same time layer and usually require three layers of built-up welding or more.And overlaying method of the present invention
Built-up welding working lining is only needed, and ensures that the effective of bending roll finished product processing back roller radius surface direction is not less than 3.0mm using thickness, it is curved
The service life length of curved roll and in use non-stick steel.Therefore the method for the present invention built-up welding workload is few, the working time is short and saves
Save wlding and energy consumption.
The beneficial effects of the invention are as follows：
1, Bead weld repair of the invention, making bending roll method and step are simple, compared with overlaying method before, before saving defluxing
Preheating, built-up welding transition zone, interlayer heat preservation, post weld heat treatment and etc. and save energy consumption.
2, Bead weld repair of the invention, making bending roll method, it is only necessary to ensure the roll surface radius side of heap postwelding bending roll
To effectively using thickness be not less than 3.0mm, service life can significantly improve, and non-stick steel in use.With with
Preceding overlaying method is compared, and built-up welding workload is few, wlding consumption is few, repair time is short.
3, after overlaying method of the present invention repairs bending roll, the dirt of roll surface need to only be cleaned in subsequent repair process dry
Only, it is not necessarily to turning fatigue layer, in the case where matrix being ensured not and being influenced using defect, by the direct built-up welding of the method for the present invention.
Pre-treatment step is reduced in this way, reduces workload.
Specific implementation mode
The present invention provides a kind of easy to operate, simple built-up welding bending roll method of flow, and key is to select suitably to weld
Material and adjustment bead-welding technology parameter carry out built-up welding work.
The method of the present invention Bead weld repair bending roll, using old roller as roll centre, by the fatigue layer and surface defect of old curved surface
Turning is clean, makes a diameter of (D-6) mm of roll surface, i.e., the working lining of 6mm is reserved within the scope of bending roll finished diameter, wherein public
Difference is ± 0.10mm.After flaw detection qualification, the dirt of facing surface is cleaned out, by adjusting bead-welding technology parameter into
Row built-up welding makes roll surface a diameter of (D+2~5) mm, i.e., more 2~5mm of built-up welding within the scope of bending roll finished diameter.Then work as bending
After roller is cooled to room temperature, turning, flow harden processing are carried out, it is ± 0.10mm to make a diameter of D mm of roll surface, tolerance.Finally carry out
Then magnetic powder detection carries out oiling, packet wherein being qualified finished product without slag inclusion, incomplete fusion, without weld defects such as crackles
Dress is waited for and being used on the machine.
The method of the present invention built-up welding makes bending roll, is closed using a kind of low-carbon alloy forged steel that obdurability is met the requirements or middle carbon
Bodkin steel makes new roller, and the cylindrical surface built-up welding then along bending roll makes a diameter of (D-6) mm of roll surface, i.e., in bending roll
The working lining of 6mm is reserved within the scope of finished diameter, wherein tolerance is ± 0.10mm.Built-up welding is carried out after flaw detection qualification, it is first
First the dirt of facing surface is cleaned out, and adjust the progress built-up welding of bead-welding technology parameter to make a diameter of (D+2~5) mm of roll surface.
Then after bending roll is cooled to room temperature, turning, flow harden processing being carried out, makes a diameter of D mm of roll surface, tolerance is ±
0.10mm.Most afterwards through magnetic powder detection, no slag inclusion, incomplete fusion without weld defects such as crackles are qualified finished product, then into
Row oiling, packaging are waited for and being used on the machine.
Wherein, above-mentioned Bead weld repair, make bending roll wlding be nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire, wherein matching
Solder flux is HJ107 or SJ601.Specifically, the crust of flux-cored wire is pure nickel band, medicine core is grouped by the group of following weight percentage
At：Metallic aluminium 13.4~44.5%, crome metal：12.6~42.2%, fluorite：5~13.3%, metal nickel powder：0~69%, heap
Postwelding deposition chemical component weight ratio is：6~8 ︰ 80~86 of Cr ︰ Al ︰ Ni=6~8 ︰.
Preferably, medicine core is grouped as by the group of following weight percentage in above-mentioned flux-cored wire：Metallic aluminium 22.2~36%,
Crome metal：21~33%, fluorite：5.8~10%, metal nickel powder：21~61%.
Preferably, medicine core is grouped as by the group of following weight percentage in above-mentioned flux-cored wire：Metallic aluminium 26.8~
31.4%, crome metal：24.6~28.8%, fluorite：7.6~8.8%, metal nickel powder：31~41%.
Specifically, metallic aluminium in the medicine core of above-mentioned flux-cored wire, crome metal, fluorite and metal nickel powder grain size be respectively：
Metallic aluminium：40~60 mesh, crome metal：70~90 mesh, fluorite：50~70 mesh, metal nickel powder：100~140 mesh.
Preferably, the grain size of metallic aluminium in medicine core, crome metal, fluorite and metal nickel powder is respectively：Metallic aluminium：50 mesh, gold
Belong to chromium：80 mesh, fluorite：60 mesh, metal nickel powder：120 mesh.
Wherein, the ratio that the weight of medicine core accounts for flux-cored wire total weight in above-mentioned flux-cored wire is 20~50%.
The production method of above-mentioned flux-cored wire is：Using pure nickel band as crust raw material, with metallic aluminium, crome metal, fluorite and gold
Belong to nickel powder as drug core component, go oil drying, medicine core dispensing to dry by nickel strap cutting, nickel strap, nickel strap rolling, medicine core filling are outer
Pi Zhong, wire drawing at different diameter specifications flux-cored wire.
Using above-mentioned overlaying method built-up welding bending roll, thickness is effectively used when bending roll machining back roller radius surface direction
When >=3.0mm, the service life of bending roll is more than 1 year, hence it is evident that than the use longevity of the bending roll of former overlaying method reparation, making
Life length, and roll surface non-stick steel.
Embodiment
1, the component of flux-cored wire and preparation in the present invention
Flux-cored wire of the present invention using the nickel strap that thickness is 0.3~0.8mm, width is 8.0~16.0mm as crust raw material, with
Drying that metallic aluminium, crome metal, fluorite and metal nickel powder cut out band as medicine core component, by nickel strap, nickel strap deoils, medicine core component are dry
Dry, nickel strap is rolled into U-shaped and loads medicine core thereto, is then rolled into again O-shaped, is finally drawn into a diameter of 2.0~4.0mm's
Flux-cored wire.The flux-cored wire of each example in table 1 is made by adjusting the weight of crust and medicine core component.
2, using above-mentioned flux-cored wire Bead weld repair bending roll
The present invention is further elaborated by taking Bead weld repair bending roll as an example below.Bending roll roll surface finished product rule after reparation
Lattice are ф 420mm х 1450mm (i.e. a diameter of ф 420mm of roll surface, the long 1450mm of roll surface)
Selection gage of wire is Ф 2.5mm flux-cored wire Bead weld repair bending rolls.
Wlding：Nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire and HJ107 match solder flux.
Technological process：Roll centre pretreatment → flaw detection → adjusting process parameter and built-up welding → machining → product inspection.
Wherein bead-welding technology parameter is as follows：
Electric power polarity：DC reverse connection；
Welding current：220~260A；
Weldingvoltage：28~32V；
Speed of welding：200~250mm/min；
Dry extension of electrode：25~28mm；
Welding wire postposition amount：25~30mm；
Amount of lap：Adjacent welding bead overlaps 50-60%.
Effectively use thickness：3.0mm；Welding wire dosage：76kg；Match solder flux dosage：92kg；Repair time：85h.
Concrete operations：Built-up welding is carried out under the conditions of above-mentioned bead-welding technology using submerged arc overlay welding method and above-mentioned welding wire.Built-up welding
It is preceding by old roller turning to a diameter of Ф 414mm of roll surface, 1~2 layer of built-up welding, a diameter of 422~423mm of Ф of roll surface after built-up welding, finally
The finished diameter of bending roll is 420mm after the subsequent processings such as turning, flow harden；Wherein tolerance is ± 0.10mm.
Heap postwelding bending roll non-stick steel and using having no damage trace after 371 days in use.
After Bead weld repair bending roll being carried out it can be seen from above-described embodiment and comparative example using the method for the present invention, roll surface
Non-stick steel and service life rises appreciably.Simultaneously can deduce using above-mentioned overlaying method make bending roll after also non-stick steel and
Service life is long.A kind of method and overlaying method phase before manufacturing bending roll using technology for repairing surfacing of the method present invention
Than：The processes such as weld preheating, built-up welding transition zone, interlayer heat preservation, post weld heat treatment are saved in weld deposit process.Repairing equal amount
Base material under the premise of, wlding usage amount is small, repair time is short, at the same also achieve the effect that environmental protection, low energy consumption.
The foregoing is merely explaining the preferred embodiments of the invention, be not intended to tool by the present invention do it is any in the form of
Upper limitation, therefore it is all have make any modification or change in relation to the present invention under identical spirit, all should include
In the scope that the invention is intended to protect.
Claims (9)
1. a kind of method manufacturing bending roll using technology for repairing surfacing, including the suitable wlding of selection and adjusting process parameter into
Built-up welding works, it is characterised in that：
The wlding is nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire and matching solder flux, heap postwelding deposition chemical composition weight
Measuring ratio is：6~8 ︰ 80~86 of Cr ︰ Al ︰ Ni=6~8 ︰；
The built-up welding work includes the following steps：Roll centre pretreatment → flaw detection → adjusting process parameter and built-up welding → machining
→ product inspection.
2. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
The crust of nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is pure nickel band, and medicine core is grouped as by the group of following weight percentage：Metallic aluminium
13.4~44.5%, crome metal：12.6~42.2%, fluorite：5~13.3%, metal nickel powder：0~69%.
3. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
The crust of nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is pure nickel band, and medicine core is grouped as by the group of following weight percentage：Metallic aluminium
22.2~36%, crome metal：21~33%, fluorite：5.8~10%, metal nickel powder：21~61%.
4. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
The crust of nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is pure nickel band, and medicine core is grouped as by the group of following weight percentage：Metallic aluminium
26.8~31.4%, crome metal：24.6~28.8%, fluorite：7.6~8.8%, metal nickel powder：31~41%.
5. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
Metallic aluminium in the medicine core of nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire, crome metal, fluorite and metal nickel powder grain size be respectively：Metal
Aluminium：40~60 mesh, crome metal：70~90 mesh, fluorite：50~70 mesh, metal nickel powder：100~140 mesh.
6. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
Metallic aluminium in the medicine core of nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire, crome metal, fluorite and metal nickel powder grain size be respectively：Metal
Aluminium：50 mesh, crome metal：80 mesh, fluorite：60 mesh, metal nickel powder：120 mesh.
7. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
The ratio that the weight of medicine core accounts for flux-cored wire total weight in nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire is 20~50%.
8. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
Built-up welding cleans out facing surface before weldering, bead-welding technology parameter is adjusted, with nickel chromium triangle aluminium profiles nickel-base alloy flux-cored wire and matching
Solder flux built-up welding makes roll surface diameter be at least D+2~5mm, and wherein D is bending roll finished diameter, i.e., the work of at least reserved 2~5mm
Layer gives follow-up machining steps.
9. a kind of method manufacturing bending roll using technology for repairing surfacing according to claim 1, it is characterised in that：It is described
Machining after the bending roll of built-up welding is cooled to room temperature, then carries out turning and flow harden processing and makes a diameter of D mm of roll surface, public
Difference is ± 0.1mm；The effective of bending roll finished product radial direction uses thickness >=3mm simultaneously, and wherein tolerance is ± 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810258008.6A CN108453467A (en) | 2018-03-27 | 2018-03-27 | A method of manufacturing bending roll using technology for repairing surfacing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810258008.6A CN108453467A (en) | 2018-03-27 | 2018-03-27 | A method of manufacturing bending roll using technology for repairing surfacing |
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| CN108453467A true CN108453467A (en) | 2018-08-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226934A (en) * | 2018-10-31 | 2019-01-18 | 广西柳钢工程技术有限公司 | The overlaying method of roll |
| CN113399860A (en) * | 2021-05-13 | 2021-09-17 | 西安理工大学 | Nickel-based welding wire for copper-steel composite plate transition layer and preparation method thereof |
-
2018
- 2018-03-27 CN CN201810258008.6A patent/CN108453467A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109226934A (en) * | 2018-10-31 | 2019-01-18 | 广西柳钢工程技术有限公司 | The overlaying method of roll |
| CN113399860A (en) * | 2021-05-13 | 2021-09-17 | 西安理工大学 | Nickel-based welding wire for copper-steel composite plate transition layer and preparation method thereof |
| CN113399860B (en) * | 2021-05-13 | 2022-06-28 | 西安理工大学 | Nickel-based welding wire for copper-steel composite plate transition layer and preparation method thereof |
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Application publication date: 20180828 |