CN104195492A - Wear-resistant and corrosion-resistant coating material and preparation method thereof, and coating and preparation method thereof - Google Patents
Wear-resistant and corrosion-resistant coating material and preparation method thereof, and coating and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a wear-resistant and corrosion-resistant coating material and a preparation method thereof, and a coating and a preparation method thereof, and belongs to the technical field of thermal spraying. The coating material is powder particles and comprises 85-87 wt% of tungsten carbide powder, 8-11 wt% of cobalt powder and 2-7 wt% of chromium powder, wherein the grain size distribution of the tungsten carbide powder is as follows: d970.9 μm or less, D50.4 μm or more, D500.6-0.8 μm, and the free path d of the metal binder phase between the tungsten carbide powder grains is less than or equal to 0.5 μm. The preparation method of the coating material comprises the steps of adding deionized water, a defoaming agent and a bonding agent into raw materials, then carrying out mixing and ball milling to obtain mixed slurry, carrying out spray drying on the mixed slurry to obtain agglomerated particles, and then sintering and crushing the agglomerated particles to obtain the WC-10Co4Cr coating material, namely the corrosion-resistant and wear-resistant coating material. The coating prepared by the coating material can bear 150MPa of water pressure without leakage, and the neutral salt spray resistance test is more than 672 hours without rusty spots.
Description
Technical field
The present invention relates to a kind of wear-and corrosion-resistant coated material and preparation method and coating and preparation method, belong to technical field of hot.
Background technology
Tungsten carbide-base cermet material hardness is high, good toughness, and coating has excellent wear resisting property, has been widely used in the industries such as aerospace, metallurgy, machinery.In WC-Co sintering metal, add a certain amount of Cr and formed WC-10Co4Cr spray material, this material has improved corrosion resisting property in keeping hard high-wearing feature, make WC-10Co4Cr can be used for the wear Protection under corrosive environment, particularly hypersonic flame spraying WC-10Co4Cr coating process can be used for substituting Hard Chromium Plating Technology, thereby applies increasingly extensive.
WC-10Co4Cr coating to the protection of matrix except to the solidity to corrosion of coated material itself mutually outside the Pass also with the density of coating with whether exist crackle relevant.The erosion resistance of WC-10Co4Cr mainly determines by Cr, and therefore the distributing homogeneity of Cr element is the key that affects material erosion resistance.At present the main production method of WC-10Co4Cr be after tungsten carbide powder, cobalt powder, chromium powder mix by a certain percentage by spraying be dried, sintering crushing acquisition product, the chromium powder using generally below 20 μ m, D
50between 12～15 μ m, and the particle size range of WC-10Co4Cr is generally at 15～45 μ m, if single WC-10Co4Cr exists a macrobead (to be greater than 10 μ chromium powder m), to be easy to cause the enrichment of Local C r, this will cause the minimizing of other positions Cr, reduce the erosion resistance of material monolithic, and for D
50chromium powder between 12～15 μ m, has chromium powder over half easily to cause the Local enrichment of chromium, and therefore integral material is easy to erosion resistance deficiency.
The density of WC-10Co4Cr coating determines jointly by spray material and spraying coating process, and the density of coating is relevant to molten state and the blending powder of dusty spray in flame stream, and the molten state of powder is determined by powder raw material and spraying coating process.
The crackle of coating is mainly the crackle forming in spraying process or sprays the crackle that last handling process causes, improper process control in spraying process easily produces internal stress and causes tiny crack in coating; A lot of workpiece have the requirement of surfaceness, therefore after spraying WC-10Co4Cr coating, all need to carry out ground finish, tiny crack in coating and grinding process also have very large relation, and the surface stress of coating hardness homogeneity, coating is the main reason that causes ground finish crackle, and coating hardness homogeneity and surface stress are determined by powder raw material and spraying coating process.Therefore need strict powder material spray and the spraying coating process controlled in order to control, reduce the tiny crack producing in the tiny crack of coating in spraying process and post-treatment process.
Existing tungsten carbide-base spray material is distinguished and can be divided into three kinds, nanometer tungsten carbide spray material, micron tungsten carbide and nano-micrometre compound carbonizing tungsten from composition crystal grain.Nanometer tungsten carbide melting is effective, and melting is even, and hardness is even, but volatile carbon, the M6C of formation fragility; Micron order wolfram varbide is mainly taking the wolfram varbide of 1～3 μ m or thicker tungsten carbide crystal grain as main, and it is less that in spraying process, wolfram varbide loses carbon, and toughness is better, but easily produces internal stress; The wolfram varbide that nano-micrometre is mixed with requires strictly spraying parameter, coating densification, and overall flexibility is better, but internal stress skewness easily cracks in post-treatment process.
Hypersonic flame spraying, because of the feature that its spraying rate is fast, temperature of combustion is relatively low, is the method for the most applicable current sprayed wc based ceramic metal.Dusty spray heating in flame stream is accelerated, and is semi-melting state and strikes matrix surface, and therefore the raw-material performance of spraying parameter and wolfram varbide is closely related, need to obtain optimal processing parameter according to different dusty spraies.
In actual applications, the erosion resistance of WC-10Co4Cr coating also has a certain distance by service requirements, the tiny crack that density, spraying process and the course of processing of coating cause is difficult to be effectively controlled, and the water pressure resistance performance of coating and salt spray corrosion resistance can't meet service requirements completely.
Summary of the invention
Based on the existing problem of above-mentioned prior art, the invention provides a kind of wear-and corrosion-resistant coated material and preparation method and coating and preparation method, can effectively control the tiny crack that density, spraying process and the course of processing of coating cause, make the erosion resistance of coating meet service requirements, thereby it is poor and be prone to the problem of tiny crack to solve the corrosion-resistant lack of homogeneity of the material existing in existing hot-spraying techniques, coating density.
For solving the problems of the technologies described above, the invention provides a kind of wear-and corrosion-resistant coated material, this coated material is powder particle, and by being that 85～87% tungsten carbide powder, 8～11% cobalt powder and 2～7% chromium powder form by weight percentage, wherein tungsten carbide powder grain size distribution is: D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d of tungsten carbide powder intergranule metallic binding phase is less than or equal to 0.5 μ m.
The present invention also provides a kind of preparation method of wear-and corrosion-resistant coated material, comprising:
Get each raw material by wear-and corrosion-resistant coated material formula of the present invention;
In described raw material, add and carry out mixing and ball milling after deionized water, defoamer and caking agent and make mixed slurry, after described mixed slurry is dried through spraying, make agglomerating particles, then the WC-10Co4Cr coated material that described agglomerating particles is obtained after oversintering and fragmentation is this corrosion-proof wear coated material.
The present invention further provides a kind of wear-and corrosion-resistant coating, in this coating, wolfram varbide hard phase grain-size D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d≤0.5 μ m of metallic binding phase between tungsten carbide crystal grain.
The present invention further provides a kind of preparation method of wear-and corrosion-resistant coating, the method is taking the corrosion-proof wear coated material described in claim 1 or 2 as raw material, makes corrosion-proof wear coating by hypersonic flame spraying technique.
Beneficial effect of the present invention is: by adopting grain size distribution D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50the tungsten carbide powder that is 0.6～0.8 μ m can ensure that with the wolfram varbide that cobalt powder and chromium powder form this coated material, this grain size distribution in spraying process, wolfram varbide dusty spray fusing degree is even, mistake carbon is few, in addition because wolfram varbide size is less, in spraying process, be difficult for producing internal stress, thereby density, spraying process and the course of processing that coating can be effectively controlled in preparation can not cause the high corrosion resistant coating of tiny crack.
Embodiment
Below the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to protection scope of the present invention.
The invention provides a kind of high corrosion resistant coated material, it is a kind of material of preparing tungsten carbide-base wear-resistant coating, can be used for the coating of high-pressure valve, this coated material is powder particle, by being that 85～87% tungsten carbide powder, 8～11% cobalt powder and 2～7% chromium powder form by weight percentage, be a kind of ultracrystallite WC-CoCr powder, wherein tungsten carbide powder grain size distribution is: D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d of tungsten carbide powder intergranule metallic binding phase is less than or equal to 0.5 μ m.
In above-mentioned coated material, employing median size is that cobalt powder and the median size of 1～2 μ m is the chromium powder of 2.5～4 μ m, adopt the chromium powder of this granularity section can ensure that chromium powder distributes in WC-CoCr powder substantially even, thereby avoid the problem of chromium powder segregation, the thinner chromium powder of granularity because of specific surface area large, oxygen level is high, can cause the problems such as follow-up sintering difficulty.
Preferably, in above-mentioned coated material, tungsten carbide powder accounts for 86% of raw material gross weight, and cobalt powder accounts for 10% of raw material gross weight, and chromium powder accounts for 4% of raw material gross weight.
Preferably, tungsten carbide powder employing median size is the tungsten carbide powder of 0.8 μ m; It is the cobalt powder of 1 μ m that cobalt powder adopts median size; It is the chromium powder of 3 μ m that chromium powder adopts median size.
The preparation method of above-mentioned wear-and corrosion-resistant coated material, comprises the following steps:
Get each raw material by above-mentioned wear-and corrosion-resistant coated material formula, in raw material, add and carry out mixing and ball milling after deionized water, defoamer and caking agent and make mixed slurry, after described mixed slurry is dried through spraying, make agglomerating particles, then the WC-CoCr powder that described agglomerating particles is obtained after oversintering and fragmentation is this corrosion-proof wear coated material.
In aforesaid method, the caking agent adding accounts for 2～10% of described raw material gross weight.Can adding in right amount of deionized water (as wet grinding media) and defoamer (froth breaking in wet-milling), as long as meet the requirement of wet-milling.
Further, the embodiment of the present invention also provides a kind of wear-and corrosion-resistant coating, in this coating, and wolfram varbide hard phase grain-size D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d≤0.5 μ m of metallic binding phase between tungsten carbide crystal grain.Concrete, this coating can adopt above-mentioned coated material spraying to form.
Further, the embodiment of the present invention also provides a kind of preparation method of wear-and corrosion-resistant coating, a kind ofly to utilize above-mentioned wear-and corrosion-resistant coated material to prepare the method for wear-and corrosion-resistant coating, the method is taking above-mentioned wear-and corrosion-resistant coated material (being WC-CoCr powder) as raw material, makes corrosion-proof wear coating by hypersonic flame spraying technique.
In aforesaid method, if hypersonic flame spraying technique taking kerosene as fuel, the powder taking granularity section in described raw material (being WC-CoCr powder) as 15～45 μ m is as starting material, compressed air pressure is greater than 6.0kg, flow is greater than 8Lmin
-1, oxygen flow is 880～900Lmin
-1, kerosene oil flow is 0.36～0.38Lmin
-1, spray is apart from being 300mm, spray gun translational speed is 280mmmin
-1; Coat-thickness 0.2～0.4mm.
In aforesaid method, if hypersonic flame spraying technique is (as taking propane as example) taking inflammable gas as fuel, powder taking granularity section in described raw material (being WC-CoCr powder) as 5～30 μ m is as starting material, and compressed air pressure is greater than 4kg, and flow is greater than 8Lmin
-1, oxygen flow is 190～210Lmin
-1, gas flow is 50～55Lmin
-1, spray is apart from being 210mm, spray gun translational speed is 300mmmin
-1; Coat-thickness 0.2～0.4mm.
The corrosion-proof wear coat-thickness that aforesaid method makes is 0.2～0.4mm, and tolerance is 150MPa without revealing hydraulic pressure, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
Coated material of the present invention, taking wolfram varbide, the cobalt powder of median size 1～2 μ m and the chromium powder of median size 2.5～4 μ m of median size 0.4～1 μ m as raw material, adopt the chromium powder of this granularity section can ensure that chromium powder distributes in WC-10Co4Cr substantially even, thereby avoid the problem of chromium powder segregation, the thinner chromium powder of granularity because of specific surface area large, oxygen level is high, can cause the problems such as follow-up sintering difficulty; Adopt median size wolfram varbide dusty spray fusing degree in 0.4～0.8 μ m wolfram varbide can ensure spraying process even, lose carbon few, in addition because wolfram varbide size is less, in spraying process, be difficult for producing internal stress.
In hypersonic flame spraying process, according to dusty spray feature, adopt suitable spraying fuel and oxygen proportion, strengthen air supply, mate suitable spray distance and spray gun translational speed, can slow down the workpiece that causes of spraying overheated, reduce the generation of spraying crackle and spraying internal stress.
The present invention can well solve the problem of the corrosion-resistant homogeneity of the material existing in existing hot-spraying techniques, coating density and tiny crack.
Below in conjunction with specific embodiment, the invention will be further described.
The embodiment of the present invention provides a kind of preparation method of high anti-corrosion wear-resistant coating, and it ensures chromium element being uniformly distributed in spray material by choosing the chromium powder of suitable particle size, improves the corrosion resistance nature of material; Choose the tungsten carbide powder powder stock that granularity is suitable, reduce decarburization, ensure that in spraying process, composite powder melting degree is even, reduce the generation of spraying internal stress; Choose suitable processing parameter according to powder feature, obtain high-compactness, flawless, be convenient to the tungsten carbide coating of post-treatment.
The described preparation method for the preparation of high corrosion resistant coating specifically comprises:
Step 1, with WC (D
97≤ 0.9 μ m, D
5>=0.4 μ m, D
50be 0.6～0.8 μ m), (1～2 μ m), (2.5～4 μ are m) for raw material, and wherein WC accounts for 86% of raw material gross weight, and cobalt powder accounts for 10% of raw material gross weight, and chromium powder accounts for 4% of raw material gross weight for chromium powder for cobalt powder;
Step 2, in above-mentioned raw materials, adding appropriate deionized water is wet grinding media, and adding 2～10% polyvinyl alcohol, the polyoxyethylene glycol etc. that account for raw material gross weight is binding agent, adds proper quantity of defoaming agent etc., and ball milling more than 24 hours, makes mixed slurry;
Step 3, makes agglomerating particles after above-mentioned mixed slurry is dried through spraying, and specifically mixed slurry is inputted after centrifugal atomizing spray drying device is dried through spraying and is made agglomerating particles; Wherein, 180～280 DEG C of the inlet temperatures of centrifugal atomizing spray drying device, 100～190 DEG C of temperature outs, atomizing disk rotating speed 5000～20000r/min, feeding amount 100～400ml/min;
Step 4, carries out sintering to above-mentioned agglomerating particles, specifically agglomerating particles is placed in to vacuum degumming stove and heats, and more than 1 hour, then at 1150～1250 DEG C of sintering, is incubated after cooling to the furnace at 100 DEG C after 2 hours and comes out of the stove 800 DEG C of insulations, completes sintering;
Step 5, by the blank crushing and screening classification after sintering, obtains the powder of service requirements particle diameter.
Step 6, in the time of the hypersonic flame spraying system taking kerosene as fuel of employing, the powder taking granularity section in above-mentioned WC-10Co4Cr as 15～45 μ m, as starting material, is greater than 6.0kg with compressed air pressure, and flow is greater than 8Lmin
-1, oxygen flow 880～900Lmin
-1, kerosene oil flow 0.36～0.38Lmin
-1, spray apart from 300mm spray gun translational speed 280mmmin
-1; In the time of the hypersonic flame spraying system taking inflammable gas as fuel of employing, the powder taking granularity section in above-mentioned WC-10Co4Cr as 5～30 μ m, as starting material, is greater than 4kg with compressed air pressure, and flow is greater than 8Lmin
-1, oxygen flow 190～210Lmin
-1, gas flow 50～55Lmin
-1(taking propane as example), sprays apart from 210mm spray gun translational speed 300mmmin
-1; Prepare the coating that thickness is 0.25～0.35mm.
The technical scheme that adopts this embodiment to provide, can prepare and be suitable for high corrosion resistant tungsten carbide coating, and coating can be born 150MPa hydraulic pressure without leakage, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
The preparation method for high corrosion resistant coating who the present invention is proposed below by specific embodiment elaborates.
Embodiment 1:
With WC (D
97=0.9 μ m, D
5=0.4 μ m, D
50=0.6 μ m), cobalt powder (D
50=1 μ m), chromium powder (D
50=3 μ are m) raw material, and wherein WC accounts for 86% of raw material gross weight, and Co powder accounts for 10% of raw material gross weight, and Cr powder accounts for 4% of raw material gross weight; By WC, Co, Cr mixing and ball milling, adding appropriate deionized water is wet grinding media, and adding the polyvinyl alcohol and the polyoxyethylene glycol that account for mixed powder gross weight 10% is binding agent, adds proper quantity of defoaming agent etc., ball milling 24 hours; Mixed slurry is inputted to centrifugal atomizing spray drying device, 270 DEG C of inlet temperatures, 180 DEG C of temperature outs, atomizing disk rotating speed 18000r/min, feeding amount 300ml/min, obtains agglomerating particles in exit; Particle after reuniting is placed in to vacuum degumming stove, vacuumizes, when vacuum tightness is less than 3Pa, start heating, while being heated to 800 DEG C, be incubated 1 hour, be then warming up to 1250 DEG C of sintering, be incubated after cooling to the furnace at 100 DEG C after 2 hours and come out of the stove; By the blank crushing and screening classification after sintering, choose the powder of 15～45 μ m as finished product.Adopt the hypersonic flame spraying system taking kerosene as fuel to prepare coating, compressed air pressure 0.65MPa, flow 8Lmin
-1, oxygen flow 880Lmin
-1, kerosene oil flow 0.36Lmin
-1, spray apart from 300mm spray gun translational speed 280mmmin
-1.Coating microhardness mean value HV
0.3>=1200, minimum value HV
0.3>=1100, coating can be born 150MPa hydraulic pressure without leakage, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
Embodiment 2:
With WC (D
97=0.85 μ m, D
5=0.6 μ m, D
50=0.7 μ m), cobalt powder (D
50=1 μ m), chromium powder (D
50=2.5 μ are m) raw material, and wherein WC accounts for 86% of raw material gross weight, and Co powder accounts for 10% of raw material gross weight, and Cr powder accounts for 4% of raw material gross weight; By WC, Co, Cr mixing and ball milling, adding appropriate deionized water is wet grinding media, and adding the polyvinyl alcohol and the polyoxyethylene glycol that account for mixed powder gross weight 10% is binding agent, adds proper quantity of defoaming agent etc., ball milling 24 hours; Mixed slurry is inputted to centrifugal atomizing spray drying device, 270 DEG C of inlet temperatures, 180 DEG C of temperature outs, atomizing disk rotating speed 18000r/min, feeding amount 300ml/min, obtains agglomerating particles in exit; Particle after reuniting is placed in to vacuum degumming stove, vacuumizes, when vacuum tightness is less than 3Pa, start heating, while being heated to 800 DEG C, be incubated 1 hour, be then warming up to 1200 DEG C of sintering, be incubated after cooling to the furnace at 100 DEG C after 2 hours and come out of the stove; By the blank crushing and screening classification after sintering, choose the powder of 5～30 μ m as finished product.Adopt and prepare coating with inflammable gas (taking propane as example) as the hypersonic flame spraying system of fuel, with compressed air pressure 0.5MPa, flow is greater than 8Lmin
-1, oxygen flow 200Lmin
-1, propane flow 50Lmin
-1, spray apart from 210mm spray gun translational speed 300mmmin
-1; Prepare the coating that thickness is 0.25～0.35mm.Coating microhardness mean value HV
0.3>=1200, minimum value HV
0.3>=1100, coating can be born 150MPa hydraulic pressure without leakage, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
Embodiment 3:
With WC (D
97=0.9 μ m, D
5=0.6 μ m, D
50=0.75 μ m), cobalt powder (D
50=2 μ m), chromium powder (D
50=4 μ are m) raw material, and wherein WC accounts for 86% of raw material gross weight, and Co powder accounts for 10% of raw material gross weight, and Cr powder accounts for 4% of raw material gross weight; By WC, Co, Cr mixing and ball milling, adding appropriate deionized water is wet grinding media, and adding the polyvinyl alcohol and the polyoxyethylene glycol that account for mixed powder gross weight 10% is binding agent, adds proper quantity of defoaming agent etc., ball milling 24 hours; Mixed slurry is inputted to centrifugal atomizing spray drying device, 270 DEG C of inlet temperatures, 180 DEG C of temperature outs, atomizing disk rotating speed 18000r/min, feeding amount 300ml/min, obtains agglomerating particles in exit; Particle after reuniting is placed in to vacuum degumming stove, vacuumizes, when vacuum tightness is less than 3Pa, start heating, while being heated to 800 DEG C, be incubated 1 hour, be then warming up to 1230 DEG C of sintering, be incubated after cooling to the furnace at 100 DEG C after 2 hours and come out of the stove; By the blank crushing and screening classification after sintering, choose the powder of 15～45 μ m as finished product.Adopt the hypersonic flame spraying system taking kerosene as fuel to prepare coating, compressed air pressure 0.7MPa, flow 8Lmin
-1, oxygen flow 900Lmin
-1, kerosene oil flow 0.38Lmin
-1, spray apart from 300mm spray gun translational speed 280mmmin
-1.Coating microhardness mean value HV
0.3>=1200, minimum value HV
0.3>=1100, coating can be born 150MPa hydraulic pressure without leakage, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
The above; only for preferably embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (12)
1. a wear-and corrosion-resistant coated material, is characterized in that, this coated material is powder particle, and by being that 85～87% tungsten carbide powder, 8～11% cobalt powder and 2～7% chromium powder form by weight percentage, wherein tungsten carbide powder grain size distribution is: D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d of tungsten carbide powder intergranule metallic binding phase is less than or equal to 0.5 μ m.
2. wear-and corrosion-resistant coated material according to claim 1, is characterized in that, it is the cobalt powder of 1 μ m that described cobalt powder adopts median size; It is the chromium powder of 3 μ m that described chromium powder adopts median size.
3. a preparation method for wear-and corrosion-resistant coated material, is characterized in that, comprising:
Get each raw material by the formula described in claim 1 or 2;
In described raw material, add and carry out mixing and ball milling after deionized water, defoamer and caking agent and make mixed slurry, after described mixed slurry is dried through spraying, make agglomerating particles, then the WC-10Co4Cr coated material that described agglomerating particles is obtained after oversintering and fragmentation is this corrosion-proof wear coated material.
4. high corrosion resistant coated material according to claim 3, is characterized in that, described in the caking agent that adds account for 2～10% of described raw material gross weight.
5. according to the high corrosion resistant coated material described in claim 3 or 4, it is characterized in that, described binding agent adopts any in polyvinyl alcohol, polyoxyethylene glycol.
6. according to the high corrosion resistant coated material described in claim 3 or 4, it is characterized in that, describedly described mixed slurry is made to agglomerating particles through spraying after dry be:
After being dried through spraying, described mixed slurry input centrifugal atomizing spray drying device makes agglomerating particles; Wherein, the inlet temperature of described centrifugal atomizing spray drying device is 180～280 DEG C, and temperature out is 100～190 DEG C, and atomizing disk rotating speed is 5000～20000r/min, and feeding amount is 100～400ml/min.
7. according to the high corrosion resistant coated material described in claim 3 or 4, it is characterized in that described being sintered to described agglomerating particles:
Described agglomerating particles is placed in to vacuum degumming stove and heats, more than 1 hour, then at 1150～1250 DEG C of sintering, be incubated after cooling to the furnace at 100 DEG C after 2 hours and come out of the stove 800 DEG C of insulations, complete sintering.
8. a wear-and corrosion-resistant coating, is characterized in that, in this coating, and wolfram varbide hard phase grain-size D
97be less than or equal to 0.9 μ m, D
5be more than or equal to 0.4 μ m, D
50be 0.6～0.8 μ m, the free path d≤0.5 μ m of metallic binding phase between tungsten carbide crystal grain.
9. a preparation method for wear-and corrosion-resistant coating, is characterized in that, the method is taking the corrosion-proof wear coated material described in claim 1 or 2 as raw material, makes corrosion-proof wear coating by hypersonic flame spraying technique.
10. the preparation method of wear-and corrosion-resistant coating according to claim 9, it is characterized in that, described hypersonic flame spraying technique is taking kerosene as fuel, powder taking granularity section in described raw material as 15～45 μ m is as starting material, and compressed air pressure is greater than 6.0kg, and flow is greater than 8Lmin-1, oxygen flow is 880～900Lmin-1, kerosene oil flow is 0.36～0.38Lmin-1, and spray is apart from being 300mm, and spray gun translational speed is 280mmmin-1.
The preparation method of 11. wear-and corrosion-resistant coatings according to claim 8, it is characterized in that, described hypersonic flame spraying technique is taking inflammable gas as fuel, powder taking granularity section in described raw material as 5～30 μ m is as starting material, and compressed air pressure is greater than 4kg, and flow is greater than 8Lmin-1, oxygen flow is 190～210Lmin-1, gas flow is 50～55Lmin-1, and spray is apart from being 210mm, and spray gun translational speed is 300mmmin-1.
The preparation method of the wear-and corrosion-resistant coating described in 12. according to Claim 8 to 11 any one, it is characterized in that, the described corrosion-proof wear coat-thickness making is 0.2～0.4mm, and tolerance is 150MPa without revealing hydraulic pressure, and resistance to neutral salt spray test is greater than 672 hours without rust staining.
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| CN106544616A (en) * | 2016-11-24 | 2017-03-29 | 北京工业大学 | A kind of preparation method of wear resistant corrosion resistant WC CoCr coatings |
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| CN111185591A (en) * | 2020-02-18 | 2020-05-22 | 北京科技大学广州新材料研究院 | TiC high manganese steel composite material and preparation method thereof |
| CN114210969A (en) * | 2021-12-17 | 2022-03-22 | 武汉苏泊尔炊具有限公司 | Corrosion-resistant material, method for producing same, and corrosion-resistant coating formed therefrom |
| CN114457301A (en) * | 2021-06-28 | 2022-05-10 | 北京机科国创轻量化科学研究院有限公司 | High-speed steel self-lubricating coating and preparation method thereof |
| CN114481001A (en) * | 2021-12-30 | 2022-05-13 | 中国科学院宁波材料技术与工程研究所 | Impact-resistant multilayer metal ceramic coating and preparation method thereof |
| CN114570924A (en) * | 2022-04-29 | 2022-06-03 | 矿冶科技集团有限公司 | Binder, 5-15 micron tungsten carbide powder and preparation method thereof |
| CN115261763A (en) * | 2022-07-29 | 2022-11-01 | 上海交通大学内蒙古研究院 | Preparation method of flash tungsten coating on surface of roller |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0586452A (en) * | 1991-09-27 | 1993-04-06 | Kobe Steel Ltd | Powder material for thermal spraying |
| US5882376A (en) * | 1997-05-16 | 1999-03-16 | Korea Institute Of Machinery & Materials | Mechanochemical process for producing fine WC/CO composite powder |
| US6004372A (en) * | 1999-01-28 | 1999-12-21 | Praxair S.T. Technology, Inc. | Thermal spray coating for gates and seats |
| CN103073940A (en) * | 2013-01-25 | 2013-05-01 | 北矿新材科技有限公司 | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying |
| GB2504838A (en) * | 2012-06-15 | 2014-02-12 | Element Six Abrasives Sa | A superhard polycrystalline material |
-
2014
- 2014-09-02 CN CN201410443321.9A patent/CN104195492B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0586452A (en) * | 1991-09-27 | 1993-04-06 | Kobe Steel Ltd | Powder material for thermal spraying |
| US5882376A (en) * | 1997-05-16 | 1999-03-16 | Korea Institute Of Machinery & Materials | Mechanochemical process for producing fine WC/CO composite powder |
| US6004372A (en) * | 1999-01-28 | 1999-12-21 | Praxair S.T. Technology, Inc. | Thermal spray coating for gates and seats |
| GB2504838A (en) * | 2012-06-15 | 2014-02-12 | Element Six Abrasives Sa | A superhard polycrystalline material |
| CN103073940A (en) * | 2013-01-25 | 2013-05-01 | 北矿新材科技有限公司 | Preparation method of salt-spray-corrosion-resistant hard-surface coating material for thermal spraying |
Non-Patent Citations (1)
| Title |
|---|
| 田晔等: "WC-10Co-4Cr粉末及涂层性能研究", 《热喷涂技术》 * |
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| CN106967935A (en) * | 2015-12-28 | 2017-07-21 | 韩国Pim株式会社 | The method for manufacturing heat-resistant components |
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| CN114481001A (en) * | 2021-12-30 | 2022-05-13 | 中国科学院宁波材料技术与工程研究所 | Impact-resistant multilayer metal ceramic coating and preparation method thereof |
| CN114570924A (en) * | 2022-04-29 | 2022-06-03 | 矿冶科技集团有限公司 | Binder, 5-15 micron tungsten carbide powder and preparation method thereof |
| CN114570924B (en) * | 2022-04-29 | 2022-07-22 | 矿冶科技集团有限公司 | Binder, 5-15 micron tungsten carbide powder and preparation method thereof |
| CN115261763A (en) * | 2022-07-29 | 2022-11-01 | 上海交通大学内蒙古研究院 | Preparation method of flash tungsten coating on surface of roller |
| CN115261763B (en) * | 2022-07-29 | 2023-11-14 | 上海交通大学内蒙古研究院 | Preparation method of roller surface tungsten flash coating |
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