CN106378512A - Compression roller surface gas shield surfacing method based on iron base graphene composite welding material - Google Patents
Compression roller surface gas shield surfacing method based on iron base graphene composite welding material Download PDFInfo
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- CN106378512A CN106378512A CN201610826301.9A CN201610826301A CN106378512A CN 106378512 A CN106378512 A CN 106378512A CN 201610826301 A CN201610826301 A CN 201610826301A CN 106378512 A CN106378512 A CN 106378512A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
- B23K9/044—Built-up welding on three-dimensional surfaces
- B23K9/046—Built-up welding on three-dimensional surfaces on surfaces of revolution
- B23K9/048—Built-up welding on three-dimensional surfaces on surfaces of revolution on cylindrical 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
- 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
- B23K35/3053—Fe 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
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- 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
- B23K9/013—Arc cutting, gouging, scarfing or desurfacing
Abstract
The invention discloses a compression roller surface gas shield surfacing method based on an iron base graphene composite welding material. The method includes the following steps that a, carbon arc gouging is conducted; b, bottoming surfacing is conducted; c, surfacing of a hard face layer is conducted; and d, a pattern layer is subjected to surfacing onto the above hard face layer, the iron base graphene composite welding material is subjected to surfacing, and a certain pattern design is formed till the compression roller size meets the requirement; a few-layer graphene strengthened iron base composite welding layer is generated on a compression roller surface, and the surface of the welding layer includes few-layer graphene refined grains which are evenly distributed, wherein the iron base graphene composite welding material is composed of a tubular wrapping material and filling powder arranged in the tubular wrapping material in a filling manner. The tubular wrapping material is low-carbon steel or low-alloy steel, and the filling powder is a mixture of Fe base graphene powder, ceramic particles, B, Cr, Ni, refractory metal and nanoscale Al2O3 powder.
Description
Technical field
The invention belongs to roll squeezer technique for overlaying field is and in particular to a kind of pressure roller based on iron-based Graphene composite solder
Roll surface Gas Shielded welding method.
Background technology
Graphene is a kind of new material with unique physico-chemical characteristic.This material is the thinnest the hardest in the world at present
One of material.Have excellent electric property (energy gap approximates 0, and carrier mobility reaches 2 × 105cm simultaneously2·
V-1 s-1), remarkable mechanical property (Young's moduluss are 1100GPa, and fracture strength is 125GPa) and good calorifics
Performance (thermal conductivity is about 5000W m-1 K-1, and thermal coefficient of expansion is extremely low).Since self-discovery, Graphene is extensive
It is used for preparing various new materials, particularly functional composite material.
In the research starting evening of Graphene enhancing structure composite, it is concentrated mainly at present and prepares Graphene REINFORCED Al base,
Ni base, Cu based composites.Strengthen in metal-base composites in blocky graphite alkene, Graphene is distributed on crystal boundary, refinement is brilliant
Grain, improves the yield strength of material and the effect of hardness.The preparation process very complicated of these materials, manufacturing cost occupies height not
Down it is difficult to realize scale volume production, they are also all confined to the application of particular/special requirement.
The characteristic being had by Graphene, is suitable for needing wearing layer to realize abrasionproof purpose application various.Special
It is not the modification application of the contact surface having sliding frictional wear or rolling friction abrasion.
Content of the invention
It is an object of the invention to provide a kind of pressure roller roll surface Gas Shielded welding based on iron-based Graphene composite solder
Method, the method can deposit few layer graphene in pressure roller roll surface and strengthen layer, thus substantially increasing the table of pressure roller roll surface
Surface hardness and anti-wear performance.
The present invention adopts following scheme to solve above-mentioned technical problem：Pressure roller roll surface gas based on iron-based Graphene composite solder
Body protects overlaying method, comprises the steps：
A) electricity that the stiff dough interlayer of the graphite rod of carbon arc air gouging gouge or carbon electrode and residual on pressure roller roll surface produces
Overlaying metal is melted by arc, and is blown off with compressed gas, to clean pressure roller roll surface and to dig groove；
B) bottoming heap is welded in built-up welding multilamellar bottoming solder in pressure roller roller face plough groove, realizes the good combination with pressure roller roll surface；
C) hardstanding heap is welded in built-up welding hardstanding solder on above-mentioned prime coat；
D) flower-pattern layer heap is welded in built-up welding iron-based Graphene composite solder on above-mentioned hardstanding, and forms certain decorative pattern figure
Case, till pressure roller size reaches requirement；Described pressure roller roll surface generates few layer graphene and strengthens the compound layer of iron-based, this layer
Surface includes equally distributed few layer graphene crystal grain thinning；
Wherein, described iron-based Graphene built-up welding composite solder is by tubular wrapper material and filling filler powder therein group
Become；Described tubular wrapper material be mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle,
B, Cr, Ni, refractory metal, nanoscale Al2O3The mixture of powder, the weight of its each composition is than for Fe base graphene powder：Pottery
Granule：B：Cr：Ni：Refractory metal：Nanoscale Al2O3Powder=40-81：1-10：0.1-2.5：2-20：1-4：1-5：5-20, its
In, in described Fe base graphene powder, the mass ratio of Fe and C is 40-80：0.1-1；
Described bottoming built-up welding, hardstanding built-up welding, flower-pattern layer built-up welding operation all carry out operation using Gas Shielded welding rifle and apply
Work, its shielding gas be Ar gas, CO2 or both press 1：The gaseous mixture of 1-5 ratio.
Optimize, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Optimize, described refractory metal is at least one in V, Nb, Ta, Mo, W.
Optimize, described Gas Shielded welding rifle running voltage is 20-40V, operating current is 300-600A, described electrode
Distance to pressure roller roll surface is 3-30cm.
Wherein, described iron-based Graphene built-up welding composite solder is prepared from by following steps：
A) choosing the graphite powder that particle diameter is 100-200nm with particle diameter is the iron powder of 53um-96um, compares 1 according to weight：8-20
Ratio weigh respectively；
B) above-mentioned graphite powder and iron powder are put in drying baker and be dried, be incubated 0.5 2.0 hours at 100 150 DEG C；
C) graphite powder being dried and iron powder in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, the velocity of rotation of described mechanical mixture container is 10
120rpm, incorporation time is 2-12 hour；
D) after the completion of mixing, said mixture is sieved with the diagrid of 270 mesh, retained without 270 mesh sieve holes
Powder, as described iron-based graphene powder；
E) by the iron-based obtaining in step d graphene powder and described ceramic particle, B, Cr, Ni, refractory metal, nanoscale
Al2O3Powder mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then by filler
Powder is filled to described tubular wrapper material, that is, obtain described iron-based Graphene built-up welding composite solder；
Wherein, described mechanical mixture container includes cylindrical shape rustless steel container tank, horizontal fixing axle and driving level admittedly
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
It is scheduled in horizontal fixing axle, and shaft core becomes 15 ° of -45 ° of angles with horizontal fixing axle, described container tank is with horizontal fixing axle as axle center
Rotated；The diameter of described container tank and aspect ratio are 1:1-3.
It is an advantage of the current invention that：The present invention adopts a kind of iron-based Graphene composite solder, by Gas Shielded welding side
Method, generates few layer graphene in pressure roller roll surface and strengthens the compound layer of iron-based, thus improve case hardness and the wearability of pressure roller
Energy；The solder preparation technology of the present invention is easy, and with low cost, suitable large-scale production manufacture is conducive to the wide of grapheme material
General application.
Brief description
Fig. 1 is the process chart of iron-based Graphene composite solder in the embodiment of the present invention；
Fig. 2 is mechanical mixture container mechanical mixture process schematic in the embodiment of the present invention.
Specific embodiment
Embodiment 1
Based on the pressure roller roll surface Gas Shielded welding method of iron-based Graphene composite solder, comprise the steps：
A) electricity that the stiff dough interlayer of the graphite rod of carbon arc air gouging gouge or carbon electrode and residual on pressure roller roll surface produces
Overlaying metal is melted by arc, and is blown off with compressed gas, to clean pressure roller roll surface and to dig groove；
B) bottoming heap is welded in built-up welding multilamellar bottoming solder in pressure roller roller face plough groove, realizes the good combination with pressure roller roll surface；
C) hardstanding heap is welded in built-up welding hardstanding solder on above-mentioned prime coat；
D) flower-pattern layer heap is welded in built-up welding iron-based Graphene composite solder on above-mentioned hardstanding, and forms certain decorative pattern figure
Case, till pressure roller size reaches requirement；Described pressure roller roll surface generates few layer graphene and strengthens the compound layer of iron-based, this layer
Surface includes equally distributed few layer graphene crystal grain thinning；
Wherein, described iron-based Graphene built-up welding composite solder is by tubular wrapper material and filling filler powder therein group
Become；Described tubular wrapper material be mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle,
B, Cr, Ni, Ta, nanoscale Al2O3The mixture of powder, the weight of its each composition is than for Fe base graphene powder：Ceramic particle：
B：Cr：Ni：Ta：Nanoscale Al2O3Powder=65：7：0.5：10：1：2：14.5, wherein, in described Fe base graphene powder Fe with
The mass ratio of C is 64.5：0.5.
Described bottoming built-up welding, hardstanding built-up welding, flower-pattern layer built-up welding operation all carry out operation using Gas Shielded welding rifle and apply
Work, its shielding gas is Ar gas.
Wherein, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Described Gas Shielded welding rifle running voltage is 20-40V, and operating current is 300-600A, and described electrode is to pressure roller
The distance of roll surface is 3-30cm.
Wherein, described iron-based Graphene built-up welding composite solder is prepared from by following steps：
A) choosing the graphite powder that particle diameter is 100-200nm with particle diameter is the iron powder of 53um (270 mesh) -96um (160 mesh), presses
Compare 1 according to weight：10 ratio is weighed respectively；
B) above-mentioned graphite powder and iron powder are put in drying baker and be dried, 120 DEG C are incubated 1.0 hours；
C) graphite powder being dried and iron powder in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, the velocity of rotation of described mechanical mixture container is 100rpm,
Incorporation time is 5 hours；
D) after the completion of mixing, said mixture is sieved with the diagrid of 270 mesh, retained without 270 mesh sieve holes
Powder, as described iron-based graphene powder；
E) by the iron-based obtaining in step d graphene powder and described ceramic particle, B, Cr, Ni, Ta, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder is filled out
It is charged in described tubular wrapper material, that is, obtain described iron-based graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes cylindrical shape rustless steel container tank, horizontal fixing axle and driving level admittedly
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
It is scheduled in horizontal fixing axle, and shaft core becomes 30 ° of angles with horizontal fixing axle, described container tank is carried out for axle center with horizontal fixing axle
Rotation (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:2.
The present invention adopts a kind of iron-based Graphene composite solder, by Gas Shielded welding method, generates in pressure roller roll surface
Few layer graphene strengthens iron-based and is combined layer, and the hardness of this compound layer, more than HRC65, is preferable wear-resisting layer material, thus
Improve case hardness and the anti-wear performance of pressure roller；The solder preparation technology of the present invention is easy, with low cost, is suitable for giving birth on a large scale
Produce and manufacture, be conducive to the extensive application of grapheme material.
Embodiment 2
Based on the pressure roller roll surface Gas Shielded welding method of iron-based Graphene composite solder, comprise the steps：
A) electricity that the stiff dough interlayer of the graphite rod of carbon arc air gouging gouge or carbon electrode and residual on pressure roller roll surface produces
Overlaying metal is melted by arc, and is blown off with compressed gas, to clean pressure roller roll surface and to dig groove；
B) bottoming heap is welded in built-up welding multilamellar bottoming solder in pressure roller roller face plough groove, realizes the good combination with pressure roller roll surface；
C) hardstanding heap is welded in built-up welding hardstanding solder on above-mentioned prime coat；
D) flower-pattern layer heap is welded in built-up welding iron-based Graphene composite solder on above-mentioned hardstanding, and forms certain decorative pattern figure
Case, till pressure roller size reaches requirement；Described pressure roller roll surface generates few layer graphene and strengthens the compound layer of iron-based, this layer
Surface includes equally distributed few layer graphene crystal grain thinning；
Wherein, described iron-based Graphene built-up welding composite solder is by tubular wrapper material and filling filler powder therein group
Become；Described tubular wrapper material be mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle,
B, Cr, Ni, Nb, nanoscale Al2O3The mixture of powder, the weight of its each composition is than for Fe base graphene powder：Ceramic particle：
B：Cr：Ni：Nb：Nanoscale Al2O3Powder=60：8：1：15：3：3：10, wherein, Fe and C in described Fe base graphene powder
Mass ratio is 59.8：0.2.
Described bottoming built-up welding, hardstanding built-up welding, flower-pattern layer built-up welding operation all carry out operation using Gas Shielded welding rifle and apply
Work, its shielding gas is CO2Gas.
Wherein, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Described Gas Shielded welding rifle running voltage is 20-40V, and operating current is 300-600A, and described electrode is to pressure roller
The distance of roll surface is 3-30cm.
Wherein, described iron-based Graphene built-up welding composite solder is prepared from by following steps：
A) choosing the graphite powder that particle diameter is 100-200nm with particle diameter is the iron powder of 53um (270 mesh) -96um (160 mesh), presses
Compare 1 according to weight：12 ratio is weighed respectively；
B) above-mentioned graphite powder and iron powder are put in drying baker and be dried, 100 DEG C are incubated 2.0 hours；
C) graphite powder being dried and iron powder in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, the velocity of rotation of described mechanical mixture container is 80rpm,
Incorporation time is 8 hours；
D) after the completion of mixing, said mixture is sieved with the diagrid of 270 mesh, retained without 270 mesh sieve holes
Powder, as described iron-based graphene powder；
E) by the iron-based obtaining in step d graphene powder and described ceramic particle, B, Cr, Ni, Nb, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder is filled out
It is charged in described tubular wrapper material, that is, obtain described iron-based graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes cylindrical shape rustless steel container tank, horizontal fixing axle and driving level admittedly
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
Be scheduled in horizontal fixing axle, and shaft core with horizontal fixing axle angle at 45 °, described container tank carries out with horizontal fixing axle for axle center
Rotation (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:2.
Embodiment 3
Based on the pressure roller roll surface Gas Shielded welding method of iron-based Graphene composite solder, comprise the steps：
A) electricity that the stiff dough interlayer of the graphite rod of carbon arc air gouging gouge or carbon electrode and residual on pressure roller roll surface produces
Overlaying metal is melted by arc, and is blown off with compressed gas, to clean pressure roller roll surface and to dig groove；
B) bottoming heap is welded in built-up welding multilamellar bottoming solder in pressure roller roller face plough groove, realizes the good combination with pressure roller roll surface；
C) hardstanding heap is welded in built-up welding hardstanding solder on above-mentioned prime coat；
D) flower-pattern layer heap is welded in built-up welding iron-based Graphene composite solder on above-mentioned hardstanding, and forms certain decorative pattern figure
Case, till pressure roller size reaches requirement；Described pressure roller roll surface generates few layer graphene and strengthens the compound layer of iron-based, this layer
Surface includes equally distributed few layer graphene crystal grain thinning；
Wherein, described iron-based Graphene built-up welding composite solder is by tubular wrapper material and filling filler powder therein group
Become；Described tubular wrapper material be mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle,
B, Cr, Ni, Mo, nanoscale Al2O3The mixture of powder, the weight of its each composition is than for Fe base graphene powder：Ceramic particle：
B：Cr：Ni：Mo：Nanoscale Al2O3Powder=70.4：4：2.5：9.1：4：3：7, wherein, in described Fe base graphene powder Fe with
The mass ratio of C is 70：0.4.
Described bottoming built-up welding, hardstanding built-up welding, flower-pattern layer built-up welding operation all carry out operation using Gas Shielded welding rifle and apply
Work, its shielding gas is Ar gas, CO2By 1：The gaseous mixture of 1 ratio.
Wherein, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
Described Gas Shielded welding rifle running voltage is 20-40V, and operating current is 300-600A, and described electrode is to pressure roller
The distance of roll surface is 3-30cm.
Wherein, described iron-based Graphene built-up welding composite solder is prepared from by following steps：
A) choosing the graphite powder that particle diameter is 100-200nm with particle diameter is the iron powder of 53um (270 mesh) -96um (160 mesh), presses
Compare 1 according to weight：13 ratio is weighed respectively；
B) above-mentioned graphite powder and iron powder are put in drying baker and be dried, 100 DEG C are incubated 2.0 hours；
C) graphite powder being dried and iron powder in stepb are quickly proceeded in mechanical mixture container, start mechanical mixture and hold
Device pivots, and makes described graphite powder and iron powder mutually collide combination, the velocity of rotation of described mechanical mixture container is 120rpm,
Incorporation time is 2 hours；
D) after the completion of mixing, said mixture is sieved with the diagrid of 270 mesh, retained without 270 mesh sieve holes
Powder, as described iron-based graphene powder；
E) by the iron-based obtaining in step d graphene powder and described ceramic particle, B, Cr, Ni, Mo, nanoscale Al2O3Powder
End mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then filler powder is filled out
It is charged in described tubular wrapper material, that is, obtain described iron-based graphene thermal spraying combined wire；
Wherein, described mechanical mixture container includes cylindrical shape rustless steel container tank, horizontal fixing axle and driving level admittedly
The driving means of System of Rotating about Fixed Axis；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is solid
It is scheduled in horizontal fixing axle, and shaft core becomes 40 ° of angles with horizontal fixing axle, described container tank is carried out for axle center with horizontal fixing axle
Rotation (as shown in Figure 2)；The diameter of described container tank and aspect ratio are 1:3.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. the pressure roller roll surface Gas Shielded welding method based on iron-based Graphene composite solder is it is characterised in that include following walking
Suddenly：
A) electric arc that the stiff dough interlayer of the graphite rod of carbon arc air gouging gouge or carbon electrode and residual on pressure roller roll surface produces will
Overlaying metal melts, and is blown off with compressed gas, to clean pressure roller roll surface and to dig groove；
B) bottoming heap is welded in built-up welding multilamellar bottoming solder in pressure roller roller face plough groove, realizes the good combination of solder and pressure roller roll surface；
C) hardstanding heap is welded in built-up welding hardstanding solder on above-mentioned prime coat；
D) flower-pattern layer heap is welded in built-up welding iron-based Graphene composite solder on above-mentioned hardstanding, and forms certain floral designs, directly
To pressure roller size reaches requirement；Described pressure roller roll surface generates few layer graphene and strengthens the compound layer of iron-based, this layer surface
Include equally distributed few layer graphene crystal grain thinning；
Wherein, described iron-based Graphene built-up welding composite solder is made up of tubular wrapper material and filling filler powder therein；Institute
State tubular wrapper material be mild steel or low-alloy steel, described filler powder be Fe base graphene powder, ceramic particle, B, Cr,
Ni, refractory metal, nanoscale Al2O3The mixture of powder, the weight of its each composition is than for Fe base graphene powder：Ceramic particle：
B：Cr：Ni：Refractory metal：Nanoscale Al2O3Powder=40-81：1-10：0.1-2.5：2-20：1-4：1-5：5-20, wherein, institute
The mass ratio stating Fe and C in Fe base graphene powder is 40-80：0.1-1；
Described bottoming built-up welding, hardstanding built-up welding, flower-pattern layer built-up welding operation all carry out operation construction using Gas Shielded welding rifle, its
Shielding gas is Ar gas, CO2Or both press 1：The gaseous mixture of 1-5 ratio.
2. the pressure roller roll surface Gas Shielded welding method based on iron-based Graphene composite solder as claimed in claim 1, it is special
Levy and be, described ceramic particle comprises SiC, B4C、BN、SiO2、TiC、Al2O3Composition.
3. the pressure roller roll surface Gas Shielded welding method based on iron-based Graphene composite solder as claimed in claim 1, it is special
Levy and be, described refractory metal is at least one in V, Nb, Ta, Mo, W.
4. the pressure roller roll surface Gas Shielded welding method based on iron-based Graphene composite solder as claimed in claim 1, it is special
Levy and be, the running voltage of described Gas Shielded welding rifle is 20-40V, and operating current is 300-600A, and described electrode is to pressure roller
The distance of roll surface is 3-30cm.
5. the pressure roller roll surface Gas Shielded welding method based on iron-based Graphene composite solder as claimed in claim 1, it is special
Levy and be, described iron-based Graphene built-up welding composite solder is prepared from by following steps：
A) choosing the graphite powder that particle diameter is 100-200nm with particle diameter is the iron powder of 53um-96um, compares 1 according to weight：The ratio of 8-20
Example is weighed respectively；
B) above-mentioned graphite powder and iron powder are put in drying baker and be dried, be incubated 0.5 2.0 hours at 100 150 DEG C；
C) graphite powder being dried and iron powder in stepb are quickly proceeded in mechanical mixture container, start mechanical stainless steel around
Axle rotates, and makes described graphite powder and iron powder mutually collide combination, the velocity of rotation of described mechanical mixture container is 10 120rpm,
Incorporation time is 2-12 hour；
D) after the completion of mixing, said mixture is sieved with the diagrid of 270 mesh, is retained the powder without 270 mesh sieve holes,
It is described iron-based graphene powder；
E) by the iron-based obtaining in step d graphene powder and described ceramic particle, B, Cr, Ni, refractory metal, nanoscale Al2O3
Powder mixes according to the above ratio, dries, places into mechanical mixture container mix homogeneously, obtain filler powder, then by filler powder
Fill to described tubular wrapper material, that is, obtain described iron-based Graphene built-up welding composite solder；
Wherein, described mechanical mixture container includes cylindrical shape rustless steel container tank, horizontal fixing axle and the horizontal fixing axle of driving
The driving means of rotation；Described container tank two ends are provided with the valve inserted for powder and take out, and described container tank is fixed on
In horizontal fixing axle, and shaft core becomes 15 ° of -45 ° of angles with horizontal fixing axle, and described container tank is carried out with horizontal fixing axle for axle center
Rotation；The diameter of described container tank and aspect ratio are 1:1-3.
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