CN103966599B - Be used for alloy powder of laser melting coating and preparation method thereof - Google Patents
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Abstract
The invention discloses a kind of alloy powder for laser melting coating, comprise dissimilar metal powder and high viscosity liquid flux, described dissimilar metal powder comprises the composition of following mass percent: C0.01～0.05%, Si0.3～0.8%, Cr0.7%～1.2%, Ni0.5%～1%, Mo0.5%～0.9%, Nb0.08%～0.6%, Al3%～7%, Zr0.1%～0.3%, Ti0.05～0.15%, V0.03～0.10%, all the other are Fe. The invention also discloses a kind of preparation method of the alloy powder for laser melting coating. Alloy powder for laser melting coating of the present invention has that better solderability is poor and viscosity is higher.
Description
Technical field
The present invention relates to laser melting and coating technique field, particularly, relate to a kind of alloy for laser melting coatingPowder and preparation method thereof.
Background technology
Laser melting and coating technique refer to place on coated matrix surface in different filler modes selectAlloy coating material makes it to melt with matrix surface skim through laser irradiation simultaneously, and after rapid solidificationForm dilution factor extremely low and become the face coat of metallurgical binding with matrix material, thereby significantly improve matrix materialThe process of wear-resisting, anti-corrosion, heat-resisting, the anti-oxidant and opering characteristic of electric apparatus on material surface etc. In this technique mistakeCheng Zhong, the melting on the interface of base material of the alloy powder of interpolation, and mix with the substrate material of partial meltingBecome to mix adhered layer, the therefore adhibit quality between base material and alloy coating material, directly affects coating result.
Because laser melting coating can obtain having the metal material of multifrequency nature, do not allow but also can replaceThe high-valency metal of easily buying. Laser melting coating is compared with existing plasma metallizing (plasma in additionMetallizing) technique and arc welding (arcwelding) technique, the heat needing is few, can carry out officePortion's heat treated, therefore can reduce the distortion of base material to greatest extent. Especially because noncontact technique,So there is not the intervention of foreign matter, and can realize automation.
In laser melting and coating process, alloy powder is according to default feed speed by powder feeding deviceBe injected on base material.
The common alloy powder for laser melting coating has, and stellite (stellite), Inco nickel closeGold (inconel), Fe-Cr-Ni-B alloy, Fe-Cr-C-X alloy and copper alloy etc.
But the solderability of the existing alloy powder for laser melting coating is poor, viscosity is lower, if controlMake the gas nozzle of the anti-oxidation being used in conjunction with while injecting alloy powder in bad laser melting and coating processJet velocity, alloy powder easily disperses, and is difficult to carry out meticulous coating.
Summary of the invention
Technical problem to be solved by this invention is welding of the existing alloy powder for laser melting coatingProperty is poor, and viscosity is lower.
Technical scheme of the present invention is as follows:
For an alloy powder for laser melting coating, comprise that dissimilar metal powder and high viscosity liquid fluxAgent, described dissimilar metal powder comprises the composition of following mass percent: C0.01～0.05%, Si0.3～0.8％、Cr0.7％～1.2％、Ni0.5％～1％、Mo0.5％～0.9％、Nb0.08％～0.6％、Al3%～7%, Zr0.1%～0.3%, Ti0.05～0.15%, V0.03～0.10%, all the other are Fe.
Further: the quality percentage composition of described dissimilar metal powder is 50～60%, described high viscosity liquidThe quality percentage composition of body flux is 40%～50%.
Further: described dissimilar metal powder comprises the composition of following mass percent: C0.01%, Si0.80％、Cr0.70％、Ni1.00％、Mo0.50％、Nb0.08％、Al7.0％、Zr0.10％、Ti0.15%, V0.10%, all the other are Fe; Or, C0.05%, Si0.30%, Cr1.20%, Ni0.50%,Mo0.90%, Nb0.60%, Al3.0%, Zr0.30%, Ti0.05%, V0.03%, all the other are Fe;Or, C0.027%, Si0.70%, Cr0.75%, Ni0.84%, Mo0.71%, Nb0.12%,Al5.9%, Zr0.14%, Ti0.12%, V0.09%, all the other are Fe; Or, C0.034%, Si0.57%,Cr0.85％、Ni0.67％、Mo0.69％、Nb0.37％、Al4.6％、Zr0.19％、Ti0.09％、V0.05%, all the other are Fe; Or, C0.045%, Si0.42%, Cr0.98%, Ni0.55%,Mo0.57%, Nb0.51%, Al4.1%, Zr0.26%, Ti0.06%, V0.04%, all the other are Fe.
Further: described for high viscosity liquid flux be AMCO446 flux.
Further: the viscosity of the described alloy powder for laser melting coating is0.0001～0.0003m2/sec。
The present invention will solve to such an extent that another technical problem is the existing alloy powder for laser melting coatingThe solderability of the alloy powder that preparation method obtains is poor, and viscosity is lower.
Another technical scheme of the present invention is as follows:
For a preparation method for the alloy powder of laser melting coating, comprising: according to following mass percentComposition prepare dissimilar metal powder: C0.01～0.05%, Si0.3～0.8%, Cr0.7%～1.2%, Ni0.5％～1％、Mo0.5％～0.9％、Nb0.08％～0.6％、Al3％～7％、Zr0.1％～0.3％、Ti0.05～0.15%, V0.03～0.10%, all the other are Fe; By described dissimilar metal powder and high viscosity liquidFlux is mixed to get the described alloy powder for laser melting coating.
Further, the preparation method of described dissimilar metal powder is melting-inert gas atomizer method, comprising:The described dissimilar metal powder mixing is also incubated 1300～1500 DEG C of meltings under argon shieldWithin 12～18 hours, obtain the liquation of described dissimilar metal powder; By the liquation atomization of described dissimilar metal powder,The medium of described atomization is argon gas, and the pressure of described atomization is 4.5MPa; Described different by after described atomizationPlant the levigate dissimilar metal powder that obtains granularity≤100 μ m of metal dust.
Further, the device of described melting is medium frequency induction melting furnace, and the device of described atomization is tundish.
Further: be 50～60% according to the quality percentage composition of described dissimilar metal powder, described height is stickyProperty liquid flux quality percentage composition be 40%～50% ratio is mixed, described high viscosity liquid helpsFlux is AMCO446 flux.
Further: the temperature of described mixing is 17～20 DEG C, the time of described mixing is 15～20 minutes.
Beneficial effect of the present invention is as follows:
1, the alloy powder for laser melting coating of the present invention has that better solderability is poor and viscosity is higher.
2, the preparation method of the alloy powder for laser melting coating of the present invention can prepare to have and better canThe alloy powder that weldering property is poor and viscosity is higher.
Detailed description of the invention
In order to understand better the present invention, describe technical scheme in detail below in conjunction with the embodiments.
Embodiment 1
The preparation method of dissimilar metal powder is melting-inert gas atomizer method, and concrete steps are as follows: according toFollowing mass ratio close very much dissimilar metal powder: C0.01%, Si0.80%, Cr0.70%, Ni1.00%,Mo0.50%, Nb0.08%, Al7.0%, Zr0.10%, Ti0.15%, V0.10%, all the other are Fe.By the dissimilar metal powder mixing under argon shield 1300 DEG C of meltings and be incubated 18 hours and obtain instituteState the liquation of dissimilar metal powder. By the liquation atomization of dissimilar metal powder, the medium of atomization is argon gas,The pressure of atomization is 4.5MP. Obtain the different of granularity≤100 μ m by levigate the dissimilar metal powder after atomizationPlant metal dust.
By dissimilar metal powder and high viscosity liquid flux AMCO446 flux (U.S.'s wlding and welderingThe AmericanSolder& of agent company; FluxCo., InC.) be mixed to get closing for laser melting coatingBronze end. Wherein, the quality percentage composition of dissimilar metal powder is 57%, high viscosity liquid fluxContent is 43%. The temperature of mixing is 18 DEG C, and the time of mixing is 19 minutes.
Measure the sticky of the alloy powder for laser melting coating for preparing by Hagen-poiseille equationProperty coefficient is 0.00015m2/sec。
Embodiment 2
The preparation method of dissimilar metal powder is melting-inert gas atomizer method, and concrete steps are as follows: according toFollowing mass ratio close very much dissimilar metal powder: C0.05%, Si0.30%, Cr1.20%, Ni0.50%,Mo0.90%, Nb0.60%, Al3.0%, Zr0.30%, Ti0.05%, V0.03%, all the other are Fe.By the dissimilar metal powder mixing under argon shield 1370 DEG C of meltings and be incubated 16 hours and obtain instituteState the liquation of dissimilar metal powder. By the liquation atomization of dissimilar metal powder, the medium of atomization is argon gas,The pressure of atomization is 4.5MP. Obtain the different of granularity≤100 μ m by levigate the dissimilar metal powder after atomizationPlant metal dust.
Dissimilar metal powder and high viscosity liquid flux AMCO446 flux are mixed to get for swashingThe alloy powder of light cladding. Wherein, the quality percentage composition of dissimilar metal powder is 60%, high viscosity liquidThe content of body flux is 40%. The temperature of mixing is 17 DEG C, and the time of mixing is 20 minutes.
Measure the sticky of the alloy powder for laser melting coating for preparing by Hagen-poiseille equationProperty coefficient is 0.0001m2/sec。
Embodiment 3
The preparation method of dissimilar metal powder is melting-inert gas atomizer method, and concrete steps are as follows: according toFollowing mass ratio close very much dissimilar metal powder: C0.027%, Si0.70%, Cr0.75%, Ni0.84%,Mo0.71%, Nb0.12%, Al5.9%, Zr0.14%, Ti0.12%, V0.09%, all the other are Fe.By the dissimilar metal powder mixing under argon shield 1500 DEG C of meltings and be incubated 12 hours and obtain instituteState the liquation of dissimilar metal powder. By the liquation atomization of dissimilar metal powder, the medium of atomization is argon gas,The pressure of atomization is 4.5MP. Obtain the different of granularity≤100 μ m by levigate the dissimilar metal powder after atomizationPlant metal dust.
Dissimilar metal powder and high viscosity liquid flux AMCO446 flux are mixed to get for swashingThe alloy powder of light cladding. Wherein, the quality percentage composition of dissimilar metal powder is 53%, high viscosity liquidThe content of body flux is 47%. The temperature of mixing is 20 DEG C, and the time of mixing is 15 minutes.
Measure the sticky of the alloy powder for laser melting coating for preparing by Hagen-poiseille equationProperty coefficient is 0.00026m2/sec。
Embodiment 4
The preparation method of dissimilar metal powder is melting-inert gas atomizer method, and concrete steps are as follows: according toFollowing mass ratio close very much dissimilar metal powder: C0.034%, Si0.57%, Cr0.85%, Ni0.67%,Mo0.69%, Nb0.37%, Al4.6%, Zr0.19%, Ti0.09%, V0.05%, all the other are Fe.By the dissimilar metal powder mixing under argon shield 1400 DEG C of meltings and be incubated 15 hours and obtain instituteState the liquation of dissimilar metal powder. By the liquation atomization of dissimilar metal powder, the medium of atomization is argon gas,The pressure of atomization is 4.5MP. Obtain the different of granularity≤100 μ m by levigate the dissimilar metal powder after atomizationPlant metal dust.
Dissimilar metal powder and high viscosity liquid flux AMCO446 flux are mixed to get for swashingThe alloy powder of light cladding. Wherein, the quality percentage composition of dissimilar metal powder is 50%, high viscosity liquidThe content of body flux is 50%. The temperature of mixing is 18 DEG C, and the time of mixing is 17 minutes.
Measure the sticky of the alloy powder for laser melting coating for preparing by Hagen-poiseille equationProperty coefficient is 0.0003m2/sec。
Embodiment 5
The preparation method of dissimilar metal powder is melting-inert gas atomizer method, and concrete steps are as follows: according toFollowing mass ratio close very much dissimilar metal powder: C0.045%, Si0.42%, Cr0.98%, Ni0.55%,Mo0.57%, Nb0.51%, Al4.1%, Zr0.26%, Ti0.06%, V0.04%, all the other are Fe. .By the dissimilar metal powder mixing under argon shield 1450 DEG C of meltings and be incubated 16 hours and obtain instituteState the liquation of dissimilar metal powder. By the liquation atomization of dissimilar metal powder, the medium of atomization is argon gas,The pressure of atomization is 4.5MP. Obtain the different of granularity≤100 μ m by levigate the dissimilar metal powder after atomizationPlant metal dust.
Dissimilar metal powder and high viscosity liquid flux AMCO446 flux are mixed to get for swashingThe alloy powder of light cladding. Wherein, the quality percentage composition of dissimilar metal powder is 55%, high viscosity liquidThe content of body flux is 45%. The temperature of mixing is 18 DEG C, and the time of mixing is 19 minutes.
Measure the sticky of the alloy powder for laser melting coating for preparing by Hagen-poiseille equationProperty coefficient is 0.00021m2/sec。
The high viscosity liquid flux of selecting in embodiment 1～5 can prevent alloy in laser cladding processThe oxidation of powder and base material, improves sticking effect, and prevents the overheated of base material and liquid flux, makesIt can maintain good sticking effect. This high viscosity liquid flux need to meet low-temperature working condition, because ofThis need to select low-temperature welding liquid flux AMCO446 flux.
In embodiment 1～5, the viscosity of preparation is 0.0001～0.0003m2/ sec. If viscosity coefficient is superCross above-mentioned scope, viscosity is excessive, makes to carry alloy powder to be not easy; If lower than above-mentioned scope, noEasily coating has the base material bottom on inclined plane.
The alloy powder for laser melting coating that embodiment 1～5 is prepared is to mine hydraulic support columnCarry out, after laser melting coating, the column obtaining being carried out to experimental test, its result is as shown in table 1. Wherein canWeldering property adopts carbon equivalent empirical equation to obtain:
W=w (C)+1/6[w (Mn)]+1/5[w (Cr)+w (Mo)+w (V)]+1/15[w (Ni)+w (Cu)], whereinW represents the quality percentage composition of every kind of composition. Wherein, in the time of w < 0.4%～0.6%, weldability is good.
Performance after table 1 mine hydraulic support column cladding alloy powder
| Embodiment | Cladding layer intensity/MPa | HRC hardness | Salt-fog resistant time/h | Solderability | Percentage elongation |
| 1 | 349 | 44 | 96 | 0.56％ | 12％ |
| 2 | 374 | 47 | 104 | 0.51％ | 15％ |
| 3 | 385 | 52 | 103 | 0.39％ | 14％ |
| 4 | 411 | 58 | 115 | 0.36％ | 19％ |
| 5 | 381 | 53 | 105 | 0.40％ | 18％ |
As can be seen from the above table, use the above-mentioned alloy powder for laser melting coating, make it with uniform speedDegree is sprayed on base material, can paste and mix with base material entry material better, improves the molten of laser melting coatingCoating effect, effect high-strength, wear-resisting, corrosion-resistant, that solderability is good and percentage elongation is high that this cladding layer hasReally.
The raising of C content makes solderability variation, therefore, the quality percentage composition of C is controlled at0.01～0.05%. The raising of Si content improves and salt-fog resistant time cladding layer intensity, HRC hardnessIncrease, but can make solderability variation, therefore, the quality percentage composition of Si is controlled to 0.3～0.8%.Cladding layer intensity, HRC hardness are improved in the raising of Cr content and salt-fog resistant time increases, stillCr content is high can reduce impact flexibility, therefore, the quality percentage composition of Cr is controlled to 0.7%～1.2%.The raising of Ni content improves cladding layer intensity and salt-fog resistant time increases, and still, Ni content is highEasily make cladding layer occur crack, therefore, the quality percentage composition of Ni is controlled to 0.5%～1%. MoThe raising of content improves cladding layer intensity, HRC hardness, and salt-fog resistant time increases and percentage elongation becomesGreatly, still, Mo content is high can reduce non-oxidizability, therefore, and by the quality percentage composition control of Mo0.5%～0.9%. Nb can crystal grain thinning, raising wearability (being HRC hardness) and anti-dense nitreAcid attack performance, still, the high solderability variation that makes of Nb content, therefore, is controlled at the content of Nb0.08%～0.6%. The raising salt-fog resistant time of Al content increases, and can reduce intensity but Al content is high,Therefore, the content of Al is controlled to 3%～7%. Zr can suppress recrystallization and the grain growth of alloy,Improve wearability (being HRC hardness), and improve welding performance, but Zr price is higher, therefore,The content of Zr is controlled to 0.1%～0.3%. The raising of Ti content improves cladding layer intensity, can weldProperty improves, and can reduce toughness but Ti content is high, therefore, the content of Ti is controlled to 0.05～0.15%.The raising of V content improves HRC hardness, and solderability improves, and can reduce cladding layer but Ti content is highIntensity, therefore, is controlled at 0.03～0.10% by the content of V.
Also find by embodiment 1～5, in the time that the content of C increases, the content of Si reduces, C and SiTotal content between 0.35%～0.81 time, this be used for laser melting coating alloy powder with laser melting coating phaseClose properties all better.
Above embodiment is only exemplary embodiment of the present invention, is not used in restriction the present invention, of the present inventionProtection domain is defined by the claims. Those skilled in the art can be at essence of the present invention and protection modelIn enclosing, the present invention is made various amendments or is equal to replacement, this amendment or be equal to replacement and also should be considered asIn protection scope of the present invention.
Claims (10)
1. for an alloy powder for laser melting coating, it is characterized in that, comprise dissimilar metal powder andHigh viscosity liquid flux, described dissimilar metal powder comprises the composition of following mass percent: C0.01～0.05％、Si0.3～0.8％、Cr0.7％～1.2％、Ni0.5％～1％、Mo0.5％～0.9％、Nb0.08％～0.6％、Al3％～7％、Zr0.1％～0.3％、Ti0.05～0.15％、V0.03～0.10％，All the other are Fe.
2. the alloy powder for laser melting coating according to claim 1, is characterized in that: instituteThe quality percentage composition of stating dissimilar metal powder is 50～60%, the quality of described high viscosity liquid fluxPercentage composition is 40%～50%.
3. the alloy powder for laser melting coating according to claim 1 and 2, is characterized in that:Described dissimilar metal powder comprises the composition of following mass percent:
C0.01％、Si0.80％、Cr0.70％、Ni1.00％、Mo0.50％、Nb0.08％、Al7.0％、Zr0.10%, Ti0.15%, V0.10%, all the other are Fe; Or,
C0.05％、Si0.30％、Cr1.20％、Ni0.50％、Mo0.90％、Nb0.60％、Al3.0％、Zr0.30%, Ti0.05%, V0.03%, all the other are Fe; Or,
C0.027％、Si0.70％、Cr0.75％、Ni0.84％、Mo0.71％、Nb0.12％、Al5.9％、Zr0.14%, Ti0.12%, V0.09%, all the other are Fe; Or,
C0.034％、Si0.57％、Cr0.85％、Ni0.67％、Mo0.69％、Nb0.37％、Al4.6％、Zr0.19%, Ti0.09%, V0.05%, all the other are Fe; Or,
C0.045％、Si0.42％、Cr0.98％、Ni0.55％、Mo0.57％、Nb0.51％、Al4.1％、Zr0.26%, Ti0.06%, V0.04%, all the other are Fe.
4. the alloy powder for laser melting coating according to claim 3, is characterized in that: instituteState for high viscosity liquid flux be AMCO446 flux.
5. the alloy powder for laser melting coating according to claim 4, is characterized in that: instituteStating for the viscosity of the alloy powder of laser melting coating is 0.0001～0.0003m2/sec。
6. for a preparation method for the alloy powder of laser melting coating, it is characterized in that, comprising:
Prepare dissimilar metal powder according to the composition of following mass percent: C0.01～0.05%, Si0.3～0.8％、Cr0.7％～1.2％、Ni0.5％～1％、Mo0.5％～0.9％、Nb0.08％～0.6％、Al3%～7%, Zr0.1%～0.3%, Ti0.05～0.15%, V0.03～0.10%, all the other are Fe;
Described dissimilar metal powder and high viscosity liquid flux are mixed to get described for laser melting coatingAlloy powder.
7. preparation method according to claim 6, is characterized in that, described dissimilar metal powderPreparation method be melting-inert gas atomizer method, comprising:
The described dissimilar metal powder mixing is also incubated 1300～1500 DEG C of meltings under argon shieldWithin 12～18 hours, obtain the liquation of described dissimilar metal powder;
By the liquation atomization of described dissimilar metal powder, the medium of described atomization is argon gas, described atomizationPressure is 4.5MPa;
By the levigate dissimilar metal that obtains granularity≤100 μ m of described dissimilar metal powder after described atomizationPowder.
8. preparation method according to claim 7, is characterized in that, the device of described melting isMedium frequency induction melting furnace, the device of described atomization is tundish.
9. preparation method according to claim 6, is characterized in that: according to described dissimilar metalThe quality percentage composition of powder is 50～60%, and the quality percentage composition of described high viscosity liquid flux is40%～50% ratio is mixed, and described high viscosity liquid flux is AMCO446 flux.
10. preparation method according to claim 6, is characterized in that: the temperature of described mixing is17～20 DEG C, the time of described mixing is 15～20 minutes.
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| CN114774751B (en) * | 2021-10-21 | 2023-05-09 | 北京机科国创轻量化科学研究院有限公司 | Laser cladding high red hardness powder and hot stamping die cladding method |
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| US6059853A (en) * | 1993-02-06 | 2000-05-09 | Behr South Africa (Pty) Ltd. | Production of powder |
| CN103343341A (en) * | 2013-07-22 | 2013-10-09 | 中国科学院半导体研究所 | Laser cladding alloy powder and laser cladding method applying same |
| CN103484853A (en) * | 2013-09-22 | 2014-01-01 | 湖州市银鑫轧辊有限公司 | Laser cladding method applicable to roller |
| CN103692105A (en) * | 2012-09-27 | 2014-04-02 | 旭化成电子材料株式会社 | Device and method of solder cataplasm and semiconductor |
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| US6059853A (en) * | 1993-02-06 | 2000-05-09 | Behr South Africa (Pty) Ltd. | Production of powder |
| CN103692105A (en) * | 2012-09-27 | 2014-04-02 | 旭化成电子材料株式会社 | Device and method of solder cataplasm and semiconductor |
| CN103343341A (en) * | 2013-07-22 | 2013-10-09 | 中国科学院半导体研究所 | Laser cladding alloy powder and laser cladding method applying same |
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Address after: 271200 Shandong city of Xintai province Tai'an City Xindong town new road three Applicant after: Shandong Manufacturing Co., Ltd again of energy refitting big nation of group Address before: Tai'an City, Shandong Province town of 271222 east of Xintai new road three Applicant before: Shandong Energy Machinery Group Dazu Remanufacturing Co.,Ltd. |
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Free format text: CORRECT: ADDRESS; FROM: 271222 TAIAN, SHANDONG PROVINCE TO: 271200 TAIAN, SHANDONG PROVINCE Free format text: CORRECT: APPLICANT; FROM: SHANDONG ENERGY MACHINERY GROUP HAN S REMANUFACTURING CO., LTD. TO: SHANDONG ENERGY HEAVY EQUIPMENT GROUP DAZU REMANUFACTURING CO., LTD. |
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