CN106555126B - 1Cr15Ni4Mo3N steel laser cladding powder and preparation method - Google Patents
1Cr15Ni4Mo3N steel laser cladding powder and preparation method Download PDFInfo
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- CN106555126B CN106555126B CN201611026295.5A CN201611026295A CN106555126B CN 106555126 B CN106555126 B CN 106555126B CN 201611026295 A CN201611026295 A CN 201611026295A CN 106555126 B CN106555126 B CN 106555126B
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- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
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- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- 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
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- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
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- 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
Abstract
The present invention relates to 1Crl5Ni4Mo3N steel laser cladding powder and preparation method, wherein, the amount of each component is C0.09% 0.14% by weight percentage in laser cladding powder, Cr13.2% 15.2%, Ni4.1% 5.3%, Mo2.2% 2.7%, Mn0.47% 0.98%, Si0.10% 0.93%, N0.03% 0.08%, B0.02% 0.15%, rare earth 0.006% 0.048%, S0.010% 0.016%, P0.014% 0.022%, surplus are iron.Laser cladding powder proposed by the present invention is exclusively used in the laser melting and coating process of 1Crl5Ni4Mo3N steel, improve the toughness of cladding layer, ensure the excellent bond strength in cladding interface, while improve the wetability of cladding powder, suppress cladding layer and crack and delay crack growth rate.
Description
Technical field
The present invention relates to laser melting and coating technique, and in particular to 1Cr15Ni4Mo3N steel laser cladding powder and preparation side
Method.
Background technology
1Cr15Ni4Mo3N steel has the advantages that higher intensity, corrosion resistance, inoxidizability and solderability, available for 300
The load part and fastener to work for a long time in air and fuel below DEG C, for large-scale commercial machine, air fighter, helicopter rotation
In wing propeller hub, and the carrying active force component such as the rotate gear higher available for precision prescribed, fastener.But
Often there is the inclined Lower Boundary of hardness, intensity during actual heat treatment in such material of 1Cr15Ni4Mo3N steel, under wearability
Drop, causes to break down in practical applications.Existing middle generally use adjustment heat treatment temperature or surface treatment, but those methods
It all singly can only easily change its performance, and method is cumbersome, and influence factor is more, it is impossible to guarantees to improve it completely
Intensity, hardness.The laser melting and coating technique risen in recent years can improve 1Crl5Ni4Mo3N comprehensive performances well.
Laser melting and coating technique is that one kind uses laser beam heats cladding material and matrix surface, makes required special material melting welding
In the new surface modifications technology of piece surface.The principle of laser melting coating refers to add cladding material with different adding material modes
To on by the surface of cladding matrix, using the laser emission of high-energy-density to matrix surface, make matrix surface thin layer and cladding material
Material rapid melting simultaneously solidifies generation metallurgical binding, significantly improves the wear resistance and corrosion resistance of matrix surface.Laser melting coating and conventional surface
Engineering is compared, and heat input is relatively low, and the thermal deformation of material is small, and energy consumption is small, in theory can be on a variety of materials top layer using flexible
Using laser melting and coating technique, and following process very little or need not process.In addition, the chilling in laser cladding process can make
The tissue of cladding layer is finer and close, and crystal grain more refines, so that mechanical property is significantly improved.
Laser cladding of material refers mainly to form the material used in consolidation layer, to obtain the preferable laser cladding layer of performance, its
The selection of cladding material is most important, it is necessary to should meet part operating mode and the requirement of laser melting coating common processes.Cladding material is not
But there is good laser melting coating performance, and the metallurgical compatibility that cladding material should have with base material, it can be formed uniformly
Combination interface.Under normal conditions, first, cladding material and parent metal thermal coefficient of expansion are as close as possible, if both
Thermal coefficient of expansion difference is too big, then cladding layer is also easy to produce crackle or even peels off；Second, the fusing point of cladding material and parent metal will
It is close；Third, there should be good wetability between cladding material and parent metal.
The cladding powder for being usually used in repairing 1Crl5Ni4Mo3N steel is mostly Fe316 and Fe314 etc..But 1Cr15Ni4Mo3N
As a kind of high-strength tenacity stainless steel, its tensile strength reaches 1350~1600MPa, and elongation after fracture reaches more than 15%, room
Warm impact flexibility AkvReach more than 90J.Current correlative study both domestic and external is rarely reported, the powder such as existing Fe314 or Fe316
Because larger with its component difference, wetting characteristics, fusing point and physics and chemistry compatibility therebetween also differ larger, cause cladding interface to exist
Substantial amounts of hole, be mingled with and the defects of micro-crack, and produce higher dilution rate.Simultaneously as laser melting coating is as a kind of
Quick cooling and process of setting, it will usually cause cladding layer that there is larger brittleness, be easily formed more metallurgical imperfection and generation
Microfissure, thus it is difficult to ensure that its excellent combination of strength and toughness.
The content of the invention
1Crl5Ni4Mo3N steel laser cladding powders are provided it is an object of the invention to overcome the deficiencies in the prior art
And preparation method.Main component and the composition of 1Crl5Ni4Mo3N steel of the laser cladding powder of the present invention approach, it is of the invention into
One step proposes the preparation method of laser cladding powder, and the laser cladding powder in the present invention is exclusively used in 1Crl5Ni4Mo3N steel
In laser melting and coating technique, the toughness of cladding layer is improved, ensures the excellent bond strength in cladding interface, while improve cladding powder
Wetability, suppress cladding layer and crack and delay crack growth rate.
In order to realize above-mentioned technical purpose, the technical solution adopted by the present invention is：
1Crl5Ni4Mo3N steel laser cladding powders, wherein, in the 1Crl5Ni4Mo3N steel laser cladding powder
The amount of each component is by weight percentage：C 0.09%-0.14%, Cr 13.2%-15.2%, Ni 4.1%-5.3%, Mo
2.2%-2.7%, Mn 0.47%-0.98%, Si 0.10%-0.93%, N 0.03%-0.08%, B 0.02%-
0.15%, rare earth 0.006%-0.048%, S 0.010%-0.016%, P 0.014%-0.022%, surplus is iron.
1Crl5Ni4Mo3N steel proposed by the present invention is with the further preferred scheme of laser cladding powder：
Wherein, the amount of each component is by weight percentage in 1Crl5Ni4Mo3N steel laser cladding powder：C 0.09%-
0.12%, Cr 13.2%-14.8%, Ni 4.5%-5.3%, Mo 2.2%-2.5%, Mn 0.47%-0.92%, Si
0.15%-0.93%, N 0.03%-0.06%, B 0.05%-0.15%, rare earth 0.010%-0.048%, S 0.010%-
0.014%, P 0.014%-0.020%, surplus are iron.
More preferably, the amount of each component is by weight percentage in the 1Crl5Ni4Mo3N steel laser cladding powder
For：C 0.09%-0.10%, Cr 13.2%-14.0%, Ni 5.1%-5.3%, Mo 2.2%-2.3%, Mn 0.47%-
0.80%, Si 0.25%-0.93%, N 0.03%-0.04%, B 0.10%-0.15%, rare earth 0.020%-0.048%, S
0.010%-0.012%, P 0.014%-0.018%, surplus are iron.
Most preferably, the amount of each component is by weight percentage in the 1Crl5Ni4Mo3N steel laser cladding powder：C
0.10%, Cr 13.8%, Ni 5.2%, Mo 2.30%, Mn 0.70%, Si 0.55%, N 0.04%, B 0.12% is dilute
Soil 0.03%, S 0.010%, P 0.015%, surplus is iron.
Wherein, at least one of rare earth La, Ce, Y, is preferably La.
Wherein, the size of 1Crl5Ni4Mo3N steel laser cladding powder includes micron order and nanoscale, wherein micron order
Weight ratio with nano level laser cladding powder is 8-16:1.Wherein, the particle diameter of micron-sized laser cladding powder is 15-60
μm；The particle diameter of the nano level laser cladding powder is 120-450nm.Wherein, the special laser of 1Crl5Ni4Mo3N steel
The microscopic appearance of cladding powder is spherical.
The present invention proposes 1Crl5Ni4Mo3N steel：By raw material
The Fe/Si/B/ rare earth alloy powders of 1Crl5Ni4Mo3N poles material and high-purity, heating melting is mixed in high vacuum protects electric furnace
Close uniformly, be then granulated and be prepared through aerosolization.
Wherein, the preparation method of 1Crl5Ni4Mo3N steel laser cladding powder comprises the following steps：
Step 1：Dispensing：Each component weight percent content prepares in laser cladding powder described in accordance with the claim 1
The Fe/Si/B/ rare earth alloy powders of raw material 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is subjected to melting, obtains alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -15 DEG C -- 5 DEG C of argon
Gas atmosphere, the pressure of atomization is 5-7MPa；After atomization, obtained after room temperature, drying in the inert atmosphere of room temperature.
Wherein, the atomizing medium described in step 3 is preferably -11 DEG C -- 9 DEG C of argon gas atmosphere.Wherein, described in step 2
Smelting temperature be 1400-1500 DEG C, soaking time for 10-15 it is small when.
Wherein, inert atmosphere is preferably argon gas atmosphere.
In the preparation method of 1Crl5Ni4Mo3N steel laser cladding powder proposed by the present invention, the atomization process of step 3
In preferably at the same time be passed through hydrogen, the wherein volume ratio of argon gas and hydrogen is 20-30:1；So that further reduced in atomization process
Impurity in cladding powder.Wherein, the detailed process of step 3 is：The alloy solution that step 2 is obtained further is atomized, mist
It is -15 DEG C to change medium -- 5 DEG C of argon gas atmosphere, the pressure of atomization is 5-7MPa；Hydrogen is passed through at the same time during atomization, wherein
The volume ratio of argon gas and hydrogen is 20-30:1；After atomization, obtained after room temperature, drying in the inert atmosphere of room temperature.
Wherein, in the atomization steps described in step 3, the volume ratio of argon gas and hydrogen is preferably 25-30:1.Wherein, hydrogen
The gas of room temperature can be used.
Wherein, the preparation of Fe/Si/B/ rare earth alloy powders is prepared using the known technology of alloy powder.
A kind of principle of special laser cladding powder of 1Crl5Ni4Mo3N steel proposed by the present invention and have the beneficial effect that：
(1) laser cladding powder that the present invention obtains is used in 1Cr15Ni4Mo3N steel so that the key component of cladding layer
It is consistent with 1Cr15Ni4Mo3N steel matrix, makes it have good wetability, physics and chemistry compatibility and similar fusing point so that
Cladding interface has excellent bond strength, relatively low metallurgical imperfection and relatively low dilution rate.
(2) present invention regulates and controls the carbon equivalent in laser cladding powder, and regulates and controls out suitable carbon equivalent value, carries
The high toughness of cladding layer, reaches the matched well of intensity and toughness.
(3) micro B, Si are added in laser cladding powder of the invention, solvent alloy constituent element can reduce molten bath
Oxidation, improve slaggability and improve the intensity of cladding layer, while with the addition of trace rare-earth constituent element, can further purify molten
Body and crystal boundary, reduce the component and microstructure segregation of cladding layer, suppress oxide and are mingled with the formation for waiting metallurgical imperfection, raising cladding layer
Quality.
(4) size for the laser cladding powder that the present invention obtains includes micron order and nanometer grade powder, wherein further adjusting
The weight ratio of micron powder and nanometer grade powder has been controlled, while micron powder size and nanometer grade powder size have been carried out
Regulation and control so that the compactness for the cladding layer that laser cladding powder is used in laser melting and coating technique be formed greatly improves, and improves molten
The quality of coating.
(5) in the preparation method of laser cladding powder proposed by the present invention, -15 DEG C are employed in atomization steps first -- 5
DEG C argon gas, further regulated and controled the size of cladding powder, regulated and controled micron powder and nanometer grade powder in cladding powder
Content；And it is passed through a small amount of hydrogen while atomization and further reduces the impurity content of cladding powder.
(6) impact flexibility for the cladding layer that laser cladding powder proposed by the present invention is formed is 84-96J, and tensile strength is
1310-1580MPa, elongation after fracture 7.5%-24%.
Embodiment
Technical scheme is described in detail with reference to specific embodiment.
Embodiment 1
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.09%, Cr 13.2%, Ni 4.1%, Mo 2.2%, Mn 0.47%, Si 0.10%, N
0.03%, B 0.02%, La 0.006%, S 0.010%, P 0.014%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/La alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1400 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -15 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 5MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 25:1；Mist
After change, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 8:1.
Embodiment 2
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.09%, Cr 13.2%, Ni 4.5%, Mo 2.2%, Mn 0.47%, Si 0.15%, N
0.03%, B 0.05%, Ce 0.01%, S 0.010%, P 0.014%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/Ce alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1400 DEG C, when soaking time is 12 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -14 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 5.5MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 25:1；
After atomization, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 10:1.
Embodiment 3
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.09%, Cr 13.2%, Ni 5.1%, Mo 2.2%, Mn 0.47%, Si 0.25%, N
0.03%, B 0.10%, La 0.01%, Ce 0.01%, S 0.010%, P 0.014%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/La/Ce alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1500 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -13 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 5.5MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 25:1；
After atomization, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 11:1.
Embodiment 4
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.10%, Cr 13.8%, Ni 5.2%, Mo 2.3%, Mn 0.70%, Si 0.55%, N
0.04%, B 0.12%, La 0.03%, S 0.010%, P 0.015%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/La alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1500 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -11 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 6MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 23:1；Mist
After change, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 12:1.
Embodiment 5
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.10%, Cr 14.0%, Ni 5.3%, Mo 2.3%, Mn 0.80%, Si 0.93%, N
0.04%, B 0.15%, La 0.048%, S 0.012%, P 0.015%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/La alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1500 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -10 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 6MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 23:1；Mist
After change, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 13:1.
Embodiment 6
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.12%, Cr 14.8%, Ni 5.3%, Mo 2.5%, Mn 0.92%, Si 0.93%, N
0.06%, B 0.15%, Ce 0.048%, S 0.014%, P 0.02%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/Ce alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1500 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -8 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 7MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 20:1；Mist
After change, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 14:1.
Embodiment 7
1Crl5Ni4Mo3N steel laser cladding powders, each component in the 1Crl5Ni4Mo3N steel laser cladding powder
Amount be by weight percentage：C 0.14%, Cr 15.2%, Ni 5.3%, Mo 2.7%, Mn 0.98%, Si 0.93%, N
0.08%, B 0.15%, La 0.028%, Y 0.02%, S 0.016%, P 0.022%, surplus are iron.
Specifically preparation method is：
Step 1：Dispensing：Prepare raw material according to each component weight percent content in above-mentioned laser cladding powder
The Fe/Si/B/La/Y alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is placed in high vacuum protection electric furnace under the protection of argon gas and is carried out
Melting, smelting temperature are 1500 DEG C, when soaking time is 10 small, obtain alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -5 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 7MPa；Hydrogen is passed through during atomization at the same time, the wherein volume ratio of argon gas and hydrogen is 20:1；Mist
After change, obtained after room temperature, drying in the inert atmosphere of room temperature.
Size in obtained laser cladding powder includes micron order and nanoscale, wherein micron-sized cladding powder and receiving
The weight ratio of the cladding powder of meter level is 16:1.
Performance test：
The cladding powder of cladding embodiment 1- embodiments 7 is distinguished on 1Crl5Ni4Mo3N steel using high power laser,
Cladding layer is formed on 1Crl5Ni4Mo3N steel.
Specially：Drying and processing is carried out to the cladding powder of embodiment 1- embodiments 7 respectively before cladding, it is right
1Crl5Ni4Mo3N steel bands cladding area is cleared up, it is ensured that substrate material surface is bright and is cleaned with acetone, is lacked with reducing surface
Fall into and laser technology is impacted.Powder is sent out by powder feeder, and laser molten pool, cladding process are sent into by coaxial powder-feeding nozzle
In, using argon gas protective gas, good gas shield can reduce the formation of defects in cladding layer.Finally formed in matrix surface
One layer of fine and close cladding layer.Laser melting coating parameter uses basis material laser melting coating Optimal Parameters of the same race.Design parameter such as following table
It is shown.Using multi-track overlapping melting and coating technique, overlapping rate is 40~50%, and single track cladding layer height is not more than 0.5mm.Its
In, laser melting coating parameter is：Laser power 1200W, sweep speed 0.01m/s, powder feeding rate keep off for low, shielding gas velocity
400L/h。
One layer of cladding layer is prepared on 1Crl5Ni4Mo3N steel using the laser melting coating parameter of optimization.Macroscopically cladding layer table
Face no significant defect.Cladding layer is formed uniformly, and bright in color is consistent.To cladding layer capability test result referring to following table：
All explanations being not directed to belong to techniques known in the embodiment of the present invention, can be public for reference
Know that technology is carried out.
Above-mentioned embodiment is to 1Crl5Ni4Mo3N steel laser cladding powder proposed by the present invention and preparation side
The specific support of law technology thought, it is impossible to protection scope of the present invention is limited with this, everything thinks according to technology proposed by the present invention
Think, any equal change made on the basis of the technical program or equivalent change, belong to technical solution of the present invention guarantor
Protect scope.
Claims (9)
1.1Crl5Ni4Mo3N steel laser cladding powders, it is characterised in that the 1Crl5Ni4Mo3N steel laser cladding powder
The amount of each component is by weight percentage in end：C 0.09%-0.14%, Cr 13.2%-15.2%, Ni 4.1%-5.3%,
Mo 2.2%-2.7%, Mn 0.47%-0.98%, Si 0.10%-0.93%, N 0.03%-0.08%, B 0.02%-
0.15%, rare earth 0.006%-0.048%, S 0.010%-0.016%, P 0.014%-0.022%, surplus is iron；It is described
The size of 1Crl5Ni4Mo3N steel laser cladding powders includes micron order and nanoscale, wherein micron order and nano level laser
The weight ratio of cladding powder is 8-16:1.
2. 1Crl5Ni4Mo3N steel laser cladding powder according to claim 1, it is characterised in that described
The amount of each component is by weight percentage in 1Crl5Ni4Mo3N steel laser cladding powders：C 0.09%-0.12%, Cr
13.2%-14.8%, Ni 4.5%-5.3%, Mo 2.2%-2.5%, Mn 0.47%-0.92%, Si 0.15%-
0.93%, N 0.03%-0.06%, B 0.05%-0.15%, rare earth 0.010%-0.048%, S 0.010%-0.014%,
P 0.014%-0.020%, surplus are iron.
3. 1Crl5Ni4Mo3N steel laser cladding powder according to claim 1, it is characterised in that described
The amount of each component is by weight percentage in 1Crl5Ni4Mo3N steel laser cladding powders：C 0.10%, Cr 13.8%, Ni
5.2%, Mo 2.30%, Mn 0.70%, Si 0.55%, N 0.04%, B 0.12%, rare earth 0.03%, S 0.010%, P
0.015%, surplus is iron.
4. 1Crl5Ni4Mo3N steel laser cladding powder according to claim 1, it is characterised in that the rare earth is
At least one of La, Ce, Y.
5. 1Crl5Ni4Mo3N steel laser cladding powder according to claim 1, it is characterised in that described micron-sized
The particle diameter of laser cladding powder is 15-60 μm；The particle diameter of the nano level laser cladding powder is 120-450nm.
The preparation method of 6.1Crl5Ni4Mo3N steel laser cladding powders, it is characterised in that comprise the following steps：
Step 1：Dispensing：Each component weight percent content prepares raw material in laser cladding powder described in accordance with the claim 1
The Fe/Si/B/ rare earth alloy powders of 1Crl5Ni4Mo3N poles material and high-purity；
Step 2：Melting：The raw material of step steady is subjected to melting, obtains alloy molten solution；
Step 3：Atomization：The alloy solution that step 2 is obtained further is atomized, and atomizing medium is -15 DEG C -- 5 DEG C of argon gas gas
Atmosphere, the pressure of atomization is 5-7MPa；After atomization, obtained after room temperature, drying in the inert atmosphere of room temperature.
7. the preparation method of 1Crl5Ni4Mo3N steel laser cladding powder according to claim 6, it is characterised in that step
Atomizing medium described in rapid three is -11 DEG C -- 9 DEG C of argon gas atmosphere.
8. the preparation method of 1Crl5Ni4Mo3N steel laser cladding powder according to claim 6, it is characterised in that step
Hydrogen is passed through at the same time in atomization process described in rapid three, the wherein volume ratio of argon gas and hydrogen is 20-30:1.
9. the preparation method of 1Crl5Ni4Mo3N steel laser cladding powder according to claim 6, it is characterised in that step
Smelting temperature described in rapid two is 1400-1500 DEG C, when soaking time is 10-15 small.
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| CN1833043A (en) * | 2003-06-10 | 2006-09-13 | 住友金属工业株式会社 | Austenitic stainless steel for hydrogen gas and method for production thereof |
| CN103962550A (en) * | 2014-05-26 | 2014-08-06 | 山东能源机械集团大族再制造有限公司 | Alloy powder for laser cladding and preparation method thereof |
| CN105039869A (en) * | 2015-08-11 | 2015-11-11 | 中国人民解放军装甲兵工程学院 | Alloy powder used for laser remanufacturing of martensitic stainless steel parts and preparation method |
| CN105132916A (en) * | 2015-10-19 | 2015-12-09 | 西华大学 | Alloy powder for conducting laser cladding repairing on train axle and preparing method of alloy powder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1833043A (en) * | 2003-06-10 | 2006-09-13 | 住友金属工业株式会社 | Austenitic stainless steel for hydrogen gas and method for production thereof |
| CN103962550A (en) * | 2014-05-26 | 2014-08-06 | 山东能源机械集团大族再制造有限公司 | Alloy powder for laser cladding and preparation method thereof |
| CN105039869A (en) * | 2015-08-11 | 2015-11-11 | 中国人民解放军装甲兵工程学院 | Alloy powder used for laser remanufacturing of martensitic stainless steel parts and preparation method |
| CN105132916A (en) * | 2015-10-19 | 2015-12-09 | 西华大学 | Alloy powder for conducting laser cladding repairing on train axle and preparing method of alloy powder |
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Application publication date: 20170405 Assignee: Anhui Tianhang Mechanical and Electrical Co., Ltd. Assignor: State run Wuhu machinery plant Contract record no.: X2019340000005 Denomination of invention: Laser cladding powder for 1Cr15Ni4Mo3N steel and preparation method for laser cladding powder Granted publication date: 20180515 License type: Common License Record date: 20191010 |
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