CN110052610A - A kind of increasing material manufacturing method of grain roll - Google Patents
A kind of increasing material manufacturing method of grain roll Download PDFInfo
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- CN110052610A CN110052610A CN201910469347.3A CN201910469347A CN110052610A CN 110052610 A CN110052610 A CN 110052610A CN 201910469347 A CN201910469347 A CN 201910469347A CN 110052610 A CN110052610 A CN 110052610A
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- 239000000463 material Substances 0.000 title claims abstract description 82
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 238000003466 welding Methods 0.000 claims abstract description 70
- 239000011248 coating agent Substances 0.000 claims abstract description 46
- 238000000576 coating method Methods 0.000 claims abstract description 46
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims description 61
- 239000002344 surface layer Substances 0.000 claims description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000007514 turning Methods 0.000 claims description 19
- 238000009659 non-destructive testing Methods 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 17
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 abstract description 4
- 239000013078 crystal Substances 0.000 abstract description 4
- 238000000280 densification Methods 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 38
- 239000007789 gas Substances 0.000 description 29
- 230000007547 defect Effects 0.000 description 24
- 238000007689 inspection Methods 0.000 description 21
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 18
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 17
- 229910052804 chromium Inorganic materials 0.000 description 11
- 229910052750 molybdenum Inorganic materials 0.000 description 11
- 208000037656 Respiratory Sounds Diseases 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 9
- 239000012535 impurity Substances 0.000 description 9
- 239000006247 magnetic powder Substances 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 9
- 238000005520 cutting process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- 238000012797 qualification Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000005266 casting Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000002604 ultrasonography Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229960000935 dehydrated alcohol Drugs 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/50—Treatment of workpieces or articles during build-up, e.g. treatments applied to fused layers during build-up
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/25—Direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
-
- 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
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/36—Process control of energy beam parameters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/30—Process control
- B22F10/38—Process control to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Mechanical Engineering (AREA)
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- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to field of metal surface treatment technology more particularly to a kind of increasing material manufacturing methods of grain roll.The compound increasing material manufacturing technique that the present invention uses CMT technology to combine with laser melting coating, welding process heat input is small, the grain roll of manufacture has uniform surface fused coating, the surface fused coating has the crystal structure of sequence arrangement and densification, so that increasing the grain roll after material has better corrosion-resistant and high temperature resistance, the service life of grain roll is significantly improved；According to embodiment it is found that the wear-resisting property of the grain roll of the method for the invention manufacture is higher by 8 times than the wear-resisting property of Quenched 45 Steel sample.
Description
Technical field
The present invention relates to field of metal surface treatment technology more particularly to a kind of increasing material manufacturing methods of grain roll.
Background technique
In recent years, (especially excellent to steel with the fast development of modern industry and the extensive progress of infrastructure
Matter steel) demand it is growing day by day.Critical component of the roll as milling train has in terms of improving steel product and lifts foot
The effect of weight, the grain roll that largely uses especially in roll production, due to its with comprehensive mechanical performance good, price
Feature low compared with forged steel and half steel, wear-resisting property is excellent, and be applied widely.In the normal operation of rolling, cast iron rolls
What the consumption of roller was mainly generated due to abrasion and fatigue, after a cycle that works, after grain roll needs turning or is ground
It can just reuse.After turning several times and grinding, many grain rolls have reached dimension limit, pass through milling train roll gap tune
It is whole to can no longer meet requirement, can only scrap, produce a large amount of outer diameters it is overproof scrap grain roll, not only increase
Entreprise cost, while also resulting in the waste of a large amount of metal materials.Grain roll is scrapped for these, at present using traditional submerged arc
The technologies such as built-up welding, open arc built-up welding, plasma cladding are unable to complete reparation, because the welding process heat input of these technologies is larger,
It often will cause grain roll face checking, be not available in actual production, so that existing in Rolling production largely due to outer diameter
Dimension overproof and the grain roll scrapped, produce great waste.
Summary of the invention
The purpose of the present invention is to provide a kind of increasing material manufacturing methods of grain roll, solve in the prior art because welding
Journey heat input it is big and caused by grain roll face checking, be unable to complete the problem of grain roll increasing material manufacturing work.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of increasing material manufacturing methods of grain roll, comprising the following steps:
It is welded using cold metal transfer welding technique on pretreated grain roll surface of scrapping, forms surface weldering
Layer；
Using laser scanner technique by cladding material cladding to the surface layer, surface fused coating is formed；
The surface fused coating is successively carried out non-destructive testing and grinding, obtains grain roll；
The cladding material includes the component of following mass percentage: C 0.30~0.35%, Si 1.0~1.1%,
Cr 5.0~5.5%, Mo 1.4~1.5%, surplus Fe.
Preferably, the pretreatment includes that the roll surface for scrapping grain roll is successively carried out to turning, cleaning and lossless
Detection.
Preferably, the turning is by the unilateral 0.5~1.0mm of turning of the roll surface for scrapping grain roll.
Preferably, for the welding wire used that welds for D506 welding wire, the diameter of the D506 welding wire is 1.2mm, wire feed speed
Degree is 4.5mm/min.
Preferably, the speed of the welding is 24~30mm/min, and the one-sided thickness of the surface layer is 3~10mm.
Preferably, before carrying out the cladding further include: by the unilateral turning 1mm of the surface layer.
Preferably, the scan power of the laser scanning is 2800~4000W, and scanning speed is 200~500mm/min.
Preferably, carrying out the overlapping rate when cladding is 30~50%.
Preferably, the granularity of the cladding material is 135~325 mesh.
Preferably, the one-sided thickness of the surface fused coating is 2~2.5mm.
The present invention provides a kind of increasing material manufacturing method of grain roll, the present invention passes through cold metal transfer welding technique
(CMT) it is welded scrapping grain roll surface, is formed surface layer (prime coat), and combining laser scanning is in surface layer
Upper carry out cladding is formed surface fused coating (high temperature wear resistant alloy-layer), so that overproof grain roll of scrapping increases size, energy
Enough continue online use, the present invention realizes overproof to wearing by the compound increasing material manufacturing technique of CMT technology and laser melting coating
Grain roll increasing material manufacturing and recycle；The requirement for saving material, energy-saving and environmental protection is reached simultaneously；
The grain roll of the method for the invention manufacture has uniform surface fused coating, which has sequence
The crystal structure of arrangement and densification significantly improves so that increasing the roll after material has better corrosion-resistant and high temperature resistance
The service life of grain roll；According to embodiment it is found that the wear-resisting property ratio of the grain roll of the method for the invention manufacture is quenched
The wear-resisting property of fiery 45 steel curved beams is higher by 8 times；
The compound increasing material manufacturing technique that the present invention uses CMT technology to combine with laser melting coating, welding process heat input is small,
Overcoming conventional surface re-manufacturing technology such as submerged arc overlay welding, open arc built-up welding, plasma-arc, surfacing etc. easily leads to cast iron
The shortcomings that roller surface cracks.
Detailed description of the invention
Fig. 1 is the metallographic structure figure for the surface alloying layer that the embodiment of the present invention 1 manufactures.
Specific embodiment
The present invention provides a kind of increasing material manufacturing methods of grain roll, comprising the following steps:
It is welded using cold metal transfer welding technique on pretreated grain roll surface of scrapping, forms surface weldering
Layer；
Using laser scanner technique by cladding material cladding to the surface layer, surface fused coating is formed；
The surface fused coating is successively carried out non-destructive testing and grinding, obtains grain roll；
The cladding material includes the component of following mass percentage: C 0.30~0.35%, Si 1.0~1.1%,
Cr 5.0~5.5%, Mo 1.4~1.5%, surplus Fe.
The present invention is welded using cold metal transfer welding technique on pretreated grain roll surface of scrapping, and table is formed
Face layer.The present invention does not have special requirement to the source for scrapping grain roll, selects the known source of those skilled in the art
Scrap grain roll.In the present invention, it is described pretreatment preferably include by the roll surface for scrapping grain roll successively into
Driving is cut, is cleaned and non-destructive testing.The present invention is preferably by the unilateral 0.5~1.0mm of turning of the roll surface for scrapping grain roll, more
Preferably 0.6~0.8mm.The present invention scraps the fretting fatigue layer of grain roll roll surface by turning removal.The present invention preferably makes
Grain roll surface is scrapped with after washes of absolute alcohol turning, with the equal impurity that degrease.Present invention preferably employs magnetic powder spies
The defects of wound and ultrasonic examination carry out the non-destructive testing, check for crackle, it is ensured that grain roll is free of surface defects
And internal flaw.In the present invention, for carrying out scrapping processing there are the grain roll of internal flaw, as raw material for new
The metallurgical raw material of grain roll；It is incited somebody to action if it is local surfaces defect using angle grinder for there are the grain rolls of surface defect
Local surfaces defect is ground away, then uses the part sealing weld of CMT technique, is then polished, and CMT welding is carried out；If surface defect face
Larger, the then method for taking overall surface turning of product, until the defects of removal face crack, then using CMT technique progress surface
Integral solder carries out subsequent increasing material manufacturing process.
In the present invention, when carrying out the welding, the welding wire of use is preferably D506 welding wire, the diameter of the D506 welding wire
Preferably 1.2mm, wire feed rate are preferably 4.5mm/min, and speed of welding is preferably 24~30mm/min, and angle of welding gun is (vertical
In the angle of welding bead and vertical direction) it is preferably 0 °, stem elongation is preferably 12~15mm, and gap is preferably 1.2mm, protective gas
Preferably 90% (volume fraction) argon gas and 10% (volume fraction) CO2Mixed gas, the gas flow of the mixed gas
Preferably 15L/min.In the present invention, the one-sided thickness of the surface layer is preferably 3~10mm, more preferably 5~8mm.
After forming surface layer, the present invention using laser scanner technique by cladding material cladding to the surface layer,
Form surface fused coating.The present invention is preferably first by the unilateral turning 1mm of the surface layer, then carries out the cladding, advantageous in this way
In the laser cladding layer for forming surfacing, subsequent amount of machining is reduced, while also saving the higher alloy powder of price and using
Amount.In the present invention, the scan power of the laser scanning is preferably 2800~4000W, more preferably 3000~3500W, is swept
Retouching speed is preferably 200~500mm/min, more preferably 300~400mm/min；The light of laser used in the laser scanning
Spot is preferably the rectangular light spot of 2 × 14mm.In the present invention, overlapping rate when carrying out the cladding is preferably 30~50%, more
Preferably 35~45%.
In the present invention, the cladding material includes the component of following mass percentage: C 0.30~0.35%, Si
1.0~1.1%, Cr 5.0~5.5%, Mo 1.4~1.5%, surplus Fe.The present invention is to the side for preparing the cladding material
Method does not have special restriction, and method well known to those skilled in the art is selected to prepare.In the present invention, the cladding material
It is preferably powdered.In the present invention, the granularity of the cladding material is preferably 135~325 mesh, more preferably 150~280
Mesh, most preferably 180~250 mesh.There is cladding material of the present invention heat resistant and wear resistant to damage performance.In the present invention, described
The one-sided thickness of surface fused coating is preferably 2~2.5mm, more preferably 2.2~2.4mm.
After forming surface fused coating, the present invention is successively carried out non-destructive testing to the surface fused coating and grinding, obtains
To grain roll.In the present invention, the non-destructive testing preferably carries out surface dye penetrant inspection, detection to the surface fused coating
Whether the defects of crackle, is had.In the present invention, after carrying out non-destructive testing, the present invention preferably carries out the grain roll for examining qualification
Grinding, unilateral stock removal are 0.5mm, obtain the grain roll for meeting requirement.
It is described in detail below with reference to increasing material manufacturing method of the embodiment to grain roll provided by the invention, still
They cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 0.5mm；Use washes of absolute alcohol
Grain roll surface after turning, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasound
Wave inspection checks the defects of grain roll whether there is surface and underbead crack；After examining vehicle qualification, by above-mentioned pretreated
Grain roll surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, and wire feed rate is
4.5mm/min, speed of welding 24mm/min, angle of welding gun are 0 °, stem elongation 12mm, gap 1.2mm, and protective gas is
90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer is formed on grain roll, is made
The unilateral layer of the surface layer is obtained with a thickness of 3mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；
Prepare cladding material (each component is respectively as follows: C:0.30%, Si:1.0%, Cr:5.0%, Mo:1.4% according to mass percent,
Surplus is Fe, and the granularity of cladding material is 135~325 mesh)；By laser scanning, (hot spot of laser is the rectangle of 2 × 14mm
Hot spot, scan power 2800W, scanning speed 200mm/min, overlapping rate 30%) by the cladding material cladding to casting
The surface layer of iron roll, forms surface fused coating, and the one-sided thickness of the surface fused coating is 2mm；To the surface cladding
The defects of layer carries out surface dye penetrant inspection, has detected whether crackle；Grinding is carried out to the grain roll roll surface for examining qualification,
Stock removal is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
Fig. 1 is the metallographic structure figure for the surface alloying layer that the embodiment of the present invention 1 manufactures, as seen from the figure, using of the invention
Method has sequence arrangement and densification in the overproof increasing material tissue for scrapping the acquisition of grain roll surface, especially surface fused coating
Crystal structure so that increasing the grain roll after material obtains better corrosion-resistant and high temperature resistance.
Using Quenched 45 Steel sample as control sample, melted using surface of the conventional method to the grain roll that embodiment 1 obtains
Coating tissue and control sample carry out opposite grinding analysis of experiments (test parameters: test force 500N, test period 20min, test temperature
14 DEG C, speed of mainshaft 100r/min), obtained wear resistance data is as follows:
1 Wear specimens weightlessness of table compares
It can see by the abrasion resistance test results of table 1, the roller surface alloy structure after the method for the present invention increasing material manufacturing
Wear-resisting property be higher by 8 times than the wear-resisting property of Quenched 45 Steel (HRC50).This, which illustrates the method for the invention not only, realizes casting
The increasing material manufacturing of iron roll also significantly improves the wear-resisting property of grain roll.
Embodiment 2
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 1mm；Use washes of absolute alcohol vehicle
Grain roll surface after cutting, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasonic wave
Flaw detection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, passing through above-mentioned pretreated casting
Iron roller surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, wire feed rate 4.5mm/
Min, speed of welding 30mm/min, angle of welding gun are 0 °, stem elongation 15mm, gap 1.2mm, and protective gas is 90% argon
Gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, the surface are formed on grain roll
The unilateral layer of layer is with a thickness of 10mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Prepare cladding
Material (each component is respectively as follows: C:0.35%, Si:1.1%, Cr:5.5%, Mo:1.5% according to mass percent, surplus Fe,
The granularity of cladding material is 135-325 mesh)；By laser scanning, (hot spot of laser is the rectangular light spot of 2 × 14mm, scanning
Power is 4000W, scanning speed 500mm/min, overlapping rate 50%) by the table of the cladding material cladding to grain roll
On the layer of face, surface fused coating is formed, the one-sided thickness of the surface fused coating is 2.5mm；The surface fused coating is carried out
Surface dye penetrant inspection, the defects of having detected whether crackle；Grinding, stock removal are carried out to the grain roll roll surface for examining qualification
For 0.5mm, the increasing material manufacturing grain roll for meeting requirement is obtained.
Embodiment 3
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 0.5mm；Use washes of absolute alcohol
Grain roll surface after turning, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasound
Wave inspection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, by above-mentioned pretreated
Grain roll surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, and wire feed rate is
4.5mm/min, speed of welding 26mm/min, angle of welding gun are 0 °, stem elongation 13mm, gap 1.2mm, and protective gas is
90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, institute are formed on grain roll
The unilateral layer of surface layer is stated with a thickness of 6mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Preparation
(each component is respectively as follows: C:0.32%, Si:1.0%, Cr:5.2%, Mo:1.4%, surplus according to mass percent to cladding material
For Fe, the granularity of cladding material is 135-325 mesh)；By laser scanning (hot spot of laser be 2 × 14mm rectangular light spot,
Scan power is 3000W, scanning speed 250mm/min, overlapping rate 50%) by the cladding material cladding to grain roll
Surface layer on, form surface fused coating, the one-sided thickness of the surface fused coating is 2.2mm；To the surface fused coating
The defects of carrying out surface dye penetrant inspection, having detected whether crackle；To examining qualified grain roll roll surface to carry out grinding, grind
The amount of cutting is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
Embodiment 4
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 1mm；Use washes of absolute alcohol vehicle
Grain roll surface after cutting, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasonic wave
Flaw detection checks the defects of grain roll whether there is surface and underbead crack；Passing through above-mentioned pretreated grain roll table
Face is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, wire feed rate 4.5mm/min, welding
Speed is 30mm/min, and angle of welding gun (perpendicular to the angle of welding bead and vertical direction): 0 °, stem elongation 12mm, gap is
1.2mm, protective gas are 90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, on grain roll
Surface layer is formed, the unilateral layer of the surface layer is with a thickness of 8mm；Turnery processing is carried out to the surface layer, it is unilateral
Lathe quantity is 1mm；Prepare cladding material (cladding material for roll surface high temperature wear resistant be it is powdered, each component according to
Mass percent is respectively as follows: C:0.30%, Si:1.0%, Cr:5.0%, Mo:1.4%, surplus Fe, the granularity of cladding material
For 135-325 mesh)；By laser scanning, (hot spot of laser is the rectangular light spot of 2 × 14mm, and scan power 3200W is swept
Retouching speed is 300mm/min, overlapping rate 30%) by the surface layer of the cladding material cladding to grain roll, it is formed
Surface fused coating, the one-sided thickness of the surface fused coating are 2.5mm；Surface dye penetrant inspection is carried out to the surface fused coating,
The defects of having detected whether crackle；To examining qualified grain roll roll surface to carry out grinding, stock removal 0.5mm is obtained
Meet the increasing material manufacturing grain roll of requirement.
Embodiment 5
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 1mm；Use washes of absolute alcohol vehicle
Grain roll surface after cutting, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasonic wave
Flaw detection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, passing through above-mentioned pretreated casting
Iron roller surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, wire feed rate 4.5mm/
Min, speed of welding 30mm/min, angle of welding gun are 0 °, stem elongation 15mm, gap 1.2mm, and protective gas is 90% argon
Gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, the surface are formed on grain roll
The unilateral layer of layer is with a thickness of 10mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Prepare cladding
Material (each component is respectively as follows: C:0.35%, Si:1.0%, Cr:5.0%, Mo:1.5% according to mass percent, surplus Fe,
The granularity of cladding material is 135-325 mesh)；By laser scanning, (hot spot of laser is the rectangular light spot of 2 × 14mm, scanning
Power is 3600W, scanning speed 400mm/min, overlapping rate 50%), grain roll is arrived into the cladding material cladding
On the layer of surface, surface fused coating is formed, the one-sided thickness of the surface fused coating is 2.5mm；To the surface fused coating into
The dye penetrant inspection of row surface, the defects of having detected whether crackle；To examining qualified grain roll roll surface to carry out grinding, it is ground
Amount is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
Embodiment 6
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 0.5mm；Use washes of absolute alcohol
Grain roll surface after turning, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasound
Wave inspection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, by above-mentioned pretreated
Grain roll surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, and wire feed rate is
4.5mm/min, speed of welding 28mm/min, angle of welding gun are 0 °, stem elongation 13mm, gap 1.2mm, and protective gas is
90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, institute are formed on grain roll
The unilateral layer of surface layer is stated with a thickness of 4mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Preparation
(each component is respectively as follows: C:0.30%, Si:1.1%, Cr:5.5%, Mo:1.4%, surplus according to mass percent to cladding material
For Fe, the granularity of cladding material is 135-325 mesh)；By laser scanning (hot spot of laser be 2 × 14mm rectangular light spot,
Scan power is 3800W, scanning speed 450mm/min, overlapping rate 30%) by the cladding material cladding to grain roll
Surface layer on, form surface fused coating, the one-sided thickness of the surface fused coating is 2.3mm；To the surface fused coating
The defects of carrying out surface dye penetrant inspection, having detected whether crackle；To examining qualified grain roll roll surface to carry out grinding, grind
The amount of cutting is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
Embodiment 7
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 0.5mm；Use washes of absolute alcohol
Grain roll surface after turning, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and ultrasound
Wave inspection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, by above-mentioned pretreated
Grain roll surface is welded by CMT technology, and (welding wire uses D506 welding wire, gage of wire 1.2mm, and wire feed rate is
4.5mm/min, speed of welding 25mm/min, angle of welding gun are 0 °, stem elongation 12mm, gap 1.2mm, and protective gas is
90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, institute are formed on grain roll
The unilateral layer of surface layer is stated with a thickness of 7mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Preparation
(each component is respectively as follows: C:0.35%, Si:1.0%, Cr:5.5%, Mo:1.5%, surplus according to mass percent to cladding material
For Fe, the granularity of cladding material is 135-325 mesh)；By laser scanning (hot spot of laser be 2 × 14mm rectangular light spot,
Scan power is 3900W, scanning speed 380mm/min, overlapping rate 35%) by the cladding material cladding to grain roll
Surface layer on, form surface fused coating, the one-sided thickness of the surface fused coating is 2.5mm；To the surface fused coating
The defects of carrying out surface dye penetrant inspection, having detected whether crackle；To examining qualified grain roll roll surface to carry out grinding, grind
The amount of cutting is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
Embodiment 8
It is turned the fretting fatigue layer for scrapping grain roll roll surface, unilateral Lathe quantity is 0.51mm；It is clear using dehydrated alcohol
Carwash cut after grain roll surface, degrease equal impurity；Grain roll is carried out non-destructive testing, using magnetic powder inspection and is surpassed
Sonic flaw detection checks the defects of grain roll whether there is surface and underbead crack；After passed examination, passing through above-mentioned pretreatment
Grain roll surface welded that (welding wire uses D506 welding wire, gage of wire 1.2mm, and wire feed rate is by CMT technology
4.5mm/min, speed of welding 25mm/min, angle of welding gun are 0 °, stem elongation 12mm, gap 1.2mm, and protective gas is
90% argon gas+10%CO2, gas flow 15L/min), by multi-layer welding, surface layer, institute are formed on grain roll
The unilateral layer of surface layer is stated with a thickness of 9mm；Turnery processing is carried out to the surface layer, unilateral Lathe quantity is 1mm；Preparation
(each component is respectively as follows: C:0.30%, Si:1.1%, Cr:5.0%, Mo:1.4%, surplus according to mass percent to cladding material
For Fe, the granularity of cladding material is 135-325 mesh；By laser scanning, the hot spot of laser is the rectangular light spot of 2 × 14mm,
Scan power is 4000W, scanning speed 500mm/min, overlapping rate 45%), the cladding material cladding is rolled to cast iron
On the surface layer of roller, surface fused coating is formed, the one-sided thickness of the surface fused coating is 2.0mm；To the surface cladding
The defects of layer carries out surface dye penetrant inspection, has detected whether crackle；Grinding is carried out to the grain roll roll surface for examining qualification,
Stock removal is 0.5mm, obtains the increasing material manufacturing grain roll for meeting requirement.
As seen from the above embodiment, the present invention provides a kind of increasing material manufacturing method of grain roll, the present invention uses CMT
The compound increasing material manufacturing technique that technology is combined with laser melting coating, welding process heat input is small, and the grain roll of manufacture has equal
Even surface fused coating, which has the crystal structure of sequence arrangement and densification, so that the roll increased after material has
Better corrosion-resistant and high temperature resistance, significantly improves the service life of grain roll；According to embodiment it is found that institute of the present invention
The wear-resisting property for stating the grain roll of method manufacture is higher by 8 times than the wear-resisting property of Quenched 45 Steel sample.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of increasing material manufacturing method of grain roll, which comprises the following steps:
It is welded using cold metal transfer welding technique on pretreated grain roll surface of scrapping, forms surface layer；
Using laser scanner technique by cladding material cladding to the surface layer, surface fused coating is formed；
The surface fused coating is successively carried out non-destructive testing and grinding, obtains grain roll；
The cladding material includes the component of following mass percentage: C0.30~0.35%, and Si1.0~1.1%, Cr5.0~
5.5%, Mo1.4~1.5%, surplus Fe.
2. increasing material manufacturing method according to claim 1, which is characterized in that the pretreatment includes scrapping cast iron for described
The roll surface of roll successively carries out turning, cleaning and non-destructive testing.
3. increasing material manufacturing method according to claim 2, which is characterized in that the turning is to scrap grain roll for described
The unilateral 0.5~1.0mm of turning of roll surface.
4. increasing material manufacturing method according to claim 1, which is characterized in that the welding wire used that welds is D506 weldering
Silk, the diameter of the D506 welding wire are 1.2mm, wire feed rate 4.5mm/min.
5. increasing material manufacturing method according to claim 1 or 4, which is characterized in that the speed of the welding is 24~30mm/
Min, the one-sided thickness of the surface layer are 3~10mm.
6. increasing material manufacturing method according to claim 1, which is characterized in that before carrying out the cladding further include: by institute
State the unilateral turning 1mm of surface layer.
7. increasing material manufacturing method according to claim 1, which is characterized in that the scan power of the laser scanning is 2800
~4000W, scanning speed are 200~500mm/min.
8. increasing material manufacturing method according to claim 1, which is characterized in that carry out overlapping rate when the cladding be 30~
50%.
9. increasing material manufacturing method according to claim 1 or 8, which is characterized in that the granularity of the cladding material be 135~
325 mesh.
10. increasing material manufacturing method according to claim 1, which is characterized in that the one-sided thickness of the surface fused coating is 2
~2.5mm.
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| CN110172694A (en) * | 2019-06-03 | 2019-08-27 | 燕山大学 | A kind of the roll surface repair materials and a kind of reproducing method of high-speed steel roll of high-speed steel roll |
| CN111545748A (en) * | 2020-04-14 | 2020-08-18 | 西安工程大学 | Composite manufacturing method of rolling mill housing |
| CN114669840A (en) * | 2022-05-09 | 2022-06-28 | 苏州威奥得焊材科技有限公司 | Method for repairing nodular cast iron roller |
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