CN106435236A - Preparation method for nickel-based high-temperature alloy workpiece - Google Patents
Preparation method for nickel-based high-temperature alloy workpiece Download PDFInfo
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- CN106435236A CN106435236A CN201610979629.4A CN201610979629A CN106435236A CN 106435236 A CN106435236 A CN 106435236A CN 201610979629 A CN201610979629 A CN 201610979629A CN 106435236 A CN106435236 A CN 106435236A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/107—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing organic material comprising solvents, e.g. for slip casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/056—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 10% but less than 20%
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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Abstract
The invention discloses a preparation method for a nickel-based high-temperature alloy workpiece. The preparation method for the nickel-based high-temperature alloy workpiece includes the steps that nickel-based high-temperature alloy powder and free radical-cation mixed type resin are mixed according to the proportion of the volume ratio of 9:11-13:7, then a dispersing agent, a defoaming agent and a high-temperature bonding agent are added, photoinitiator is added under the light avoiding condition, uniform mixing is performed, foams are removed, and a light curing sizing agent is prepared; and three-dimensional model information of a to-be-shaped part is imported into a light curing forming device, and a workblank of a needed part is formed through ultraviolet curing; and finally, the workblank is subjected to degreasing and sintering, and the needed nickel-based high-temperature alloy workpiece is made. According to the preparation method, the segregation and burning loss condition is reduced, solidification cracks and reheating cracks are avoided, heat stress accumulation and heat deformation are further greatly reduced, and the precision and the strength of the workpiece are improved.
Description
Technical field
The invention belongs to field of alloy preparation technology is and in particular to a kind of preparation method of nickel base superalloy product.
Background technology
High temperature alloy with iron, nickel, cobalt as base is current topmost three type high temp alloys, wherein, due to nickel-base high-temperature
When alloy is compared with iron-base superalloy, present the advantages of heat conduction is excellent, tissue stabilization, solvable element are more, high with cobalt-based
When temperature alloy is compared, present the advantages of price is low, light specific gravity, intensity are high, become the most commonly used high temperature alloy of current application.
The manufacturing process of current nickel base superalloy mainly has traditional processing method and the quick forming method such as LSF, SLM.
Because alloying element contained in nickel base superalloy is more, using traditional technology or LSF, SLM etc. such as casting, welderings
RP technique can have the disadvantage that during being processed：(1) segregation of alloying element, burning phenomenon occur relatively
Many；(2) phenomenon of solidification cracking occurs；(3) phenomenon of reheat crack(ing) occurs；(4) thermal stress accumulation, thermal deformation situation relatively
Substantially, the precision of impact product and intensity.
Content of the invention
It is an object of the invention to provide a kind of preparation method of nickel base superalloy product, the method is based on photocuring skill
Art, the nickel base superalloy product of energy Quick-forming high-performance labyrinth, solve the problems, such as existing forming technique.
The technical solution adopted in the present invention is, a kind of preparation method of nickel base superalloy product, comprises the following steps：
Step 1, the preparation of photocuring slurry
By Ni-base Superalloy Powder and Free radical-Cationic Hybrid resin with volume ratio 9:11-13:7 ratio is mixed
Close, add dispersant, defoamer, high-temperature agglomerant, and add light trigger under conditions of lucifuge, mix and eliminate
Foam, makes photocuring slurry；
Step 2, the optical soliton interaction of nickel base superalloy photocuring slurry
Three-dimensional part model information to be formed is imported in optical soliton interaction equipment, shapes required part using ultraviolet light
Blank；
Step 3, by blank through degreasing, sintering, the nickel base superalloy product required for being obtained.
The feature of the present invention also resides in：
Preferably, step 2 dispersant is ammonium polyacrylate or ammonium citrate, and its quality accounts for the 0.1%- of alloy powder quality
1%；Defoamer is lower alcohol, organically-modified compound or mineral oil, and its quality accounts for the 0.06%-1% of alloy powder quality；High
Warm binding agent is organosilicon or phenolic resin, and its quality accounts for the 0.5%-1.5% of alloy powder quality, described light trigger plus
Enter the 0.1%-1.5% that amount is Ni-base Superalloy Powder quality.
Further, it is additionally added phase solvent in photocuring slurry, phase solvent is rare earth oxide, polyalcohol or stearic acid,
Its quality accounts for the 0.25%-1% of alloy powder quality.
Preferably, alloy powder meets d50It is in the granularity requirements between 0.5-10um.
Preferably, Free radical-Cationic Hybrid resin is mixed with epoxide by acrylate, wherein propylene
The volume of acid esters accounts for the 50%-90% of resin cumulative volume；Light trigger be mix type light trigger, by free radical photo-initiation with
Cation light initiator mixes, and the volume of wherein free radical photo-initiation accounts for the 50%-90% of initiator cumulative volume.
Preferably, Ni-base Superalloy Powder, dispersant, defoamer and high-temperature agglomerant all add described tree several times
Fat, and each each group adding divide between be in equal proportions.
Preferably, in a heated state, carry out the mixing of described slurry, heating-up temperature is 25-65 DEG C.
Preferably, when uv equipment shapes, lift height used is 10-100um.
Preferably, degreasing process is：Under normal pressure, inert gas environment, it is increased to the heating rate of 1-5 DEG C/min
300-700 DEG C, along with the furnace cooling after insulation 0.5-2h；Then vacuumize, identical temperature is raised to identical heating rate, experience
Along with the furnace cooling again after equal temperature retention time.
Preferably, sintering process completes in two steps：1. pre-burning, under inert gas shielding, gas pressure 100-200MPa,
It is raised to 600-900 DEG C with the heating rate of 5-20 DEG C/min, insulation 0.5-2h makes blank internal temperature homogenize and remove high temperature
Binding agent；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, 900-1300 is raised to the heating rate of 1-5 DEG C/min
DEG C, it is incubated 0.5-3h.
The invention has the beneficial effects as follows, the preparation method of the nickel base superalloy product of the present invention adopts photocuring technology,
The method reduce segregation, scaling loss ground situation occurs, and is not in solidification cracking and reheat crack(ing), also substantially reducing heat should
Power accumulation and thermal deformation.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail, but the present invention is not limited to these in fact
Apply mode.
The preparation method of the nickel base superalloy product of the present invention is as follows：
Step 1, the preparation of Ni-base Superalloy Powder：
First, the composition according to required nickel base superalloy, melts out corresponding alloy bar；Then, at annealed technique
Reason makes its homogenization of composition；Finally, by flouring technology, it is prepared into alloy powder, and make it meet d through screening50It is in
Granularity requirements between 0.5-10um.
Step 2, nickel base superalloy and resin material are mixed and made into photocuring slurry：
Step 2-1, in mixer, alloy powder is added several times (such in Free radical-Cationic Hybrid resin
The resin of type is mixed with epoxide by acrylate, and the volume fraction of wherein acrylate accounts for and mixes type resin
50%-90%), dispersant, defoamer, phase solvent, high-temperature agglomerant are all added when adding alloy powder each time, and each
Between each group of secondary interpolation is divided, ratio is identical, and mixing temperature is 25-65 DEG C, and stirs and so that it is mixed.Alloy powder and from
It is 9 by base-cationic hybrid type resin volume ratio:11-13:7, dispersant is ammonium polyacrylate or ammonium citrate, and its quality is
The 0.1%-1% of alloy powder quality.Defoamer is lower alcohol, organically-modified compound or mineral oil, and its quality accounts for alloyed powder
The 0.05%-0.5% of last quality.Phase solvent is rare earth oxide, polyalcohol, stearic acid etc., and its quality accounts for alloy powder quality
0.25%-1%, high-temperature agglomerant is organosilicon, phenolic resin etc., and its quality accounts for the 0.5%-1.5% of alloy powder quality.
Step 2-2, under conditions of lucifuge add alloy powder quality 0.1%-1.5% mix type light trigger (by
Free radical photo-initiation is mixed with cation light initiator, and the volume fraction of wherein free radical photo-initiation accounts for 50%-
90%), the defoamer of alloy powder quality 0.01%-0.5%, and be sufficiently stirred for so as to mix to make photocuring slurry
Material.
Step 2-3, photocuring slurry is stood 8-20h under the conditions of lucifuge, negative pressure (less than -0.06MPa), to exclude it
In bubble.
Step 3, the optical soliton interaction of nickel base superalloy photocuring slurry
By the three-dimensional part model information to be formed handled well, import in optical soliton interaction equipment, obtained using step 2
Nickel base superalloy photocuring slurry shapes the blank of required part.Optical wavelength range used by uv equipment is 200-
400nm, during shaping, lift height used is 10-100um.
Step 4, degreasing, sintering
Step 4-1, degreasing process is：Under normal pressure, inert gas environment, it is increased to the heating rate of 1-5 DEG C/min
300-700 DEG C, along with the furnace cooling after insulation 0.5-2h；Then vacuumize, identical temperature is raised to identical heating rate, experience
Along with the furnace cooling again after equal temperature retention time.
Step 4-2, sintering process completes in two steps：1. pre-burning, in the environment of inert gas shielding, gas pressure 100-
200MPa, is raised to 600-900 DEG C with the heating rate of 5-20 DEG C/min, and insulation 0.5-2h makes blank internal temperature homogenize and take off
Except high-temperature agglomerant；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, 800- is raised to the heating rate of 1-5 DEG C/min
1300 DEG C, it is incubated 0.5-3h, the nickel base superalloy product required for obtaining.
The present invention adopts the cold processing technique of optical soliton interaction, it is to avoid conventional hot-working process is in fusing/process of setting
The scaling loss of middle appearance, segregation situation, and be not in solidification cracking and reheat crack(ing), substantially reduce thermal stress accumulation and become with heat
Shape.
Meanwhile, using the slurry with above-mentioned formulation ratio, while ensureing slurry solid phase high accounting, improve slurry and mix
The uniformity closed, in combination with specific degreasing, sintering process step it is ensured that formation of parts has high consistency, improves into
The comprehensive mechanical property of shape part.
Embodiment 1
Nickel base superalloy essential element used and its content such as table 1.
Table 1 nickel base superalloy essential element and its content
1. the preparation of Ni-base Superalloy Powder and screening.
By the content of essential element in table 1, it is simultaneously introduced the appropriate composition such as Ta, B and rare earth, melts out alloy bar,
It is prepared into alloy powder after Homogenization Treatments, then make it meet d through screening50The Particle size requirements of=3um.
2. nickel base superalloy and resin material are mixed and made into photocuring slurry.
Weigh alloy powder 4150g, Free radical-Cationic Hybrid resin 500ml (epoxy acrylate 250ml and poly-
Urethane based epoxy resin 250ml), the two volume ratio is 1:1, dispersants ammonium polyacrylate 4.15g, defoamer mineral oil 8.30g,
Phase solvent polyalcohol 41.5g, high-temperature agglomerant organosilicon 37.35g, mix type light trigger 41.5g (dialkylacetophenones
20.75g and diaryl group iodized salt 20.75g).
First by alloy powder, dispersant, 4.15g defoamer, phase solvent, high-temperature agglomerant, add in three times and mix type tree
In fat, three times additional proportion is 3:2:1, it is uniformly mixed under normal pressure, temperature 45 C.Then add under conditions of lucifuge
Mix type light trigger and remaining 4.15g defoamer, and at ambient pressure with the rotating speed stirring 1-4h of 300-600rad/min so as to
Mix to make photocuring slurry.Photocuring slurry is stood 20h under the conditions of lucifuge, negative pressure (less than -0.06MPa),
To exclude bubble therein.
3. the optical soliton interaction of nickel base superalloy blank.
The nickel base superalloy handled well photocuring slurry is loaded in optical soliton interaction equipment, and imports treated
Three-dimensional part model to be formed, shapes the blank of required product, light wave used a length of 200nm during shaping, and lift height is
25um.
4. degreasing, sintering.
Degreasing process：Under normal pressure, ar gas environment, be increased to 300 DEG C with the heating rate of 2 DEG C/min, insulation 2h after with
Stove cools down；Then vacuumize, identical temperature is raised to identical heating rate, again with stove after the equal temperature retention time of experience
Cooling.Sintering process：1. pre-burning, in the environment of argon gas protection, gas pressure 200MPa, with the heating rate liter of 15 DEG C/min
To 600 DEG C, insulation 2h makes blank internal temperature homogenize；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, with 3 DEG C/
The heating rate of min is raised to 900 DEG C, and insulation 3h obtains required nickel base superalloy product.
Embodiment 2
Nickel base superalloy essential element used and its content such as table 2.
Table 2 nickel base superalloy essential element and its content
1. the preparation of Ni-base Superalloy Powder and screening.
By the content of essential element in table 1, it is simultaneously introduced the appropriate composition such as Ta, B and rare earth, melts out alloy bar,
It is prepared into alloy powder after Homogenization Treatments, then make it meet d through screening50The Particle size requirements of=9.5um.
2. nickel base superalloy and resin material are mixed and made into photocuring slurry.
Weigh alloy powder 3762g, Free radical-Cationic Hybrid resin 550ml (urethane acrylate 400ml and
Ethylene oxidic ester 150ml), the two volume ratio is 9:11, add dispersant same as Example 1, defoamer, phase solvent, height
Warm binding agent, wherein dispersant 18.81g, defoamer 37.62g, phase solvent 9.405g, high-temperature agglomerant 18.81g, mix type light
Initiator 56.43g (alpha-hydroxyalkyl benzophenone 41.04g and iron arene salt 15.39g).
First by alloy powder, dispersant, 31.35g defoamer, phase solvent, high-temperature agglomerant, add in three times and mix type tree
In fat, three times additional proportion is 3:2:1, it is uniformly mixed at normal pressure, 25 DEG C of temperature.Then add under conditions of lucifuge
Mix type light trigger and remaining 6.27g defoamer, and at ambient pressure with the rotating speed stirring 1-4h of 300-600rad/min so as to
Mix to make photocuring slurry.Photocuring slurry is stood under the conditions of lucifuge, negative pressure (less than -0.06MPa) 8h, with
Exclude bubble therein.
3. the optical soliton interaction of nickel base superalloy blank.
The nickel base superalloy handled well photocuring slurry is loaded in optical soliton interaction equipment, and imports treated
Three-dimensional part model to be formed, shapes the blank of required product, light wave used a length of 365nm during shaping, and lift height is
100um.
4. degreasing, sintering.
Degreasing process：Under normal pressure, ar gas environment, be increased to 500 DEG C with the heating rate of 1 DEG C/min, insulation 1h after with
Stove cools down；Then vacuumize, identical temperature is raised to identical heating rate, again with stove after the equal temperature retention time of experience
Cooling.Sintering process：1. pre-burning, in the environment of argon gas protection, gas pressure 200MPa, with the heating rate liter of 5 DEG C/min
To 700 DEG C, insulation 0.5h makes blank internal temperature homogenize；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, with 5
DEG C/heating rate of min is raised to 1000 DEG C, insulation 1h obtain required for nickel base superalloy product.
Embodiment 3
Nickel base superalloy essential element used and its content such as table 3.
Table 3 nickel base superalloy essential element and its content
1. the preparation of Ni-base Superalloy Powder and screening.
By the content of essential element in table 1, it is simultaneously introduced the appropriate composition such as Ta, B and rare earth, melts out alloy bar,
It is prepared into alloy powder after Homogenization Treatments, then make it meet d through screening50The Particle size requirements of=0.5um.
2. nickel base superalloy and resin material are mixed and made into photocuring slurry.
Weigh alloy powder 5525g, Free radical-Cationic Hybrid resin 350ml (polyester acrylate 315ml and contracting
Water glyceride 35ml), the two volume ratio is 13:7, dispersant ammonium citrate 55.25g, the organically-modified compound of defoamer
3.315g, phase solvent stearic acid 55.25g, high-temperature agglomerant organosilicon 82.875g, mix type light trigger 5.525g (hexichol first
Ketone 4.973g and alkyl sulfosalt 0.552g).
First by alloy powder, dispersant, 2g defoamer, phase solvent, high-temperature agglomerant, add in three times and mix type resin
In, three times additional proportion is 3:2:1, it is uniformly mixed at normal pressure, 25 DEG C of temperature.Then add mixed under conditions of lucifuge
Miscellaneous type light trigger and remaining 1.315g defoamer, and at ambient pressure with the rotating speed stirring 1-4h of 300-600rad/min so as to
Mix to make photocuring slurry.Photocuring slurry is stood under the conditions of lucifuge, negative pressure (less than -0.06MPa) 8h, with
Exclude bubble therein.
3. the optical soliton interaction of nickel base superalloy blank.
The nickel base superalloy handled well photocuring slurry is loaded in optical soliton interaction equipment, and imports treated
Three-dimensional part model to be formed, shapes the blank of required product, light wave used a length of 365nm during shaping, and lift height is
10um.
4. degreasing, sintering.
Degreasing process：Under normal pressure, ar gas environment, it is increased to 700 DEG C with the heating rate of 5 DEG C/min, after insulation 0.5h
Along with the furnace cooling；Then vacuumize, identical temperature be raised to identical heating rate, experience after equal temperature retention time again with
Stove cools down.Sintering process：1. pre-burning, in the environment of argon gas protection, gas pressure 100MPa, with the heating rate of 20 DEG C/min
It is raised to 900 DEG C, insulation 1.5h makes blank internal temperature homogenize；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, with 1
DEG C/heating rate of min is raised to 1300 DEG C, insulation 0.5h obtain required for nickel base superalloy product.
Embodiment 4
Nickel base superalloy essential element used and its content such as table 4.
Table 4 nickel base superalloy essential element and its content
1. the preparation of Ni-base Superalloy Powder and screening.
By the content of essential element in table 1, it is simultaneously introduced the appropriate composition such as Ta, B and rare earth, melts out alloy bar,
It is prepared into alloy powder after Homogenization Treatments, then make it meet d through screening50The Particle size requirements of=1.0um.
2. nickel base superalloy and resin material are mixed and made into photocuring slurry.
Weigh alloy powder 4980g, Free radical-Cationic Hybrid resin 400ml (polyester acrylate 240ml and contracting
Water glyceride 160ml), the two volume ratio is 3:2, dispersant ammonium citrate 59.76g, defoamer lower alcohol 7.47g, phase solvent
Rare earth oxide 6.474g, high-temperature agglomerant phenolic resin 74.70g, mix type light trigger 44.82g (benzophenone
26.892g and alkyl sulfosalt 17.928g).
First by alloy powder, dispersant, 4.98g defoamer, phase solvent, high-temperature agglomerant, add in three times and mix type tree
In fat, three times additional proportion is 3:2:1, it is uniformly mixed at normal pressure, 25 DEG C of temperature.Then add under conditions of lucifuge
Mix type light trigger and remaining 2.49g defoamer, and at ambient pressure with the rotating speed stirring 1-4h of 300-600rad/min so as to
Mix to make photocuring slurry.Photocuring slurry is stood under the conditions of lucifuge, negative pressure (less than -0.06MPa) 8h, with
Exclude bubble therein.
3. the optical soliton interaction of nickel base superalloy blank.
The nickel base superalloy handled well photocuring slurry is loaded in optical soliton interaction equipment, and imports treated
Three-dimensional part model to be formed, shapes the blank of required product, light wave used a length of 400nm during shaping, and lift height is
10um.
4. degreasing, sintering.
Degreasing process：Under normal pressure, ar gas environment, it is increased to 700 DEG C with the heating rate of 5 DEG C/min, after insulation 0.5h
Along with the furnace cooling；Then vacuumize, identical temperature be raised to identical heating rate, experience after equal temperature retention time again with
Stove cools down.Sintering process：1. pre-burning, in the environment of argon gas protection, gas pressure 100MPa, with the heating rate of 20 DEG C/min
It is raised to 900 DEG C, insulation 1.5h makes blank internal temperature homogenize；2. sinter, after the completion for the treatment of pre-burning, at the same pressure, with 1
DEG C/heating rate of min is raised to 1300 DEG C, insulation 0.5h obtain required for nickel base superalloy product.
Claims (10)
1. a kind of preparation method of nickel base superalloy product is it is characterised in that comprise the following steps：
Step 1, the preparation of photocuring slurry
By Ni-base Superalloy Powder and Free radical-Cationic Hybrid resin with volume ratio 9:11-13:7 ratio mixing, then
Add dispersant, defoamer, high-temperature agglomerant, and add light trigger under conditions of lucifuge, mix and eliminate foam,
Make photocuring slurry；
Step 2, the optical soliton interaction of nickel base superalloy photocuring slurry
Three-dimensional part model information to be formed is imported in optical soliton interaction equipment, shapes the hair of required part using ultraviolet light
Base；
Step 3, by blank through degreasing, sintering, the nickel base superalloy product required for being obtained.
2. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described dispersant is poly-
Ammonium acrylate or ammonium citrate, its quality accounts for the 0.1%-1% of alloy powder quality；Described defoamer is lower alcohol, You Jigai
Property compound or mineral oil, its quality accounts for the 0.06%-1% of alloy powder quality, and described high-temperature agglomerant is organosilicon or phenol
Urea formaldehyde, its quality accounts for the 0.5%-1.5% of alloy powder quality, and the addition of described light trigger is nickel base superalloy powder
The 0.1%-1.5% of last quality.
3. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described photocuring slurry
In be additionally added phase solvent, phase solvent is rare earth oxide, polyalcohol or stearic acid, and its quality accounts for alloy powder quality
0.25%-1.5%.
4. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described alloy powder is full
Sufficient d50It is in the granularity requirements between 0.5-10um.
5. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described free radical-sun
Ion is mixed type resin and is mixed with epoxide by acrylate, and the volume of wherein acrylate accounts for resin cumulative volume
50%-90%；Described light trigger be mix type light trigger, mixed with cation light initiator by free radical photo-initiation and
Become, the volume of wherein free radical photo-initiation accounts for the 50%-90% of light trigger cumulative volume.
6. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described nickel-base high-temperature closes
Between bronze end, dispersant, defoamer and high-temperature agglomerant all add described resin several times, and each each group adding is divided
It is in equal proportions.
7. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that in a heated state,
Carry out the mixing of described slurry, heating-up temperature is 25-65 DEG C.
8. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described uv equipment
During shaping, lift height used is 10-100um.
9. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described degreasing process
For：Under normal pressure, inert gas environment, be increased to 300-700 DEG C with the heating rate of 1-5 DEG C/min, insulation 0.5-2h after with
Stove cools down；Then vacuumize, identical temperature is raised to identical heating rate, again with stove after the equal temperature retention time of experience
Cooling.
10. the preparation method of nickel base superalloy product according to claim 1 is it is characterised in that described sintering process
Complete in two steps：1. pre-burning, under inert gas shielding, gas pressure 100-200MPa, with the heating rate of 5-20 DEG C/min
It is raised to 600-900 DEG C, insulation 0.5-2h makes blank internal temperature homogenize and remove high-temperature agglomerant；2. sinter, treat pre- burning-out
Cheng Hou, at the same pressure, is raised to 800-1300 DEG C with the heating rate of 1-5 DEG C/min, is incubated 0.5-3h.
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