CN109454226A - A kind of preparation method of TC11 alloy components - Google Patents
A kind of preparation method of TC11 alloy components Download PDFInfo
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- CN109454226A CN109454226A CN201811322020.5A CN201811322020A CN109454226A CN 109454226 A CN109454226 A CN 109454226A CN 201811322020 A CN201811322020 A CN 201811322020A CN 109454226 A CN109454226 A CN 109454226A
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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
- 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
- B22F1/102—Metallic powder coated with organic material
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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
- 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
- B22F1/103—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing an organic binding agent comprising a mixture of, or obtained by reaction of, two or more components other than a solvent or a lubricating agent
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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
- B22F3/225—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 by injection molding
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
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Abstract
The present invention relates to a kind of preparation methods of TC11 alloy components, including selecting the TC11 pre-alloyed powder that sphericity is high, oxygen content is low, partial size is thin, based binder system is moulded as composed by POM, skeletal support agent, lubricant and antioxidant, it prepares feeding and is injected on injection machine, it is catalyzed using nitric acid or oxalic acid, product after catalysis is sintered under the conditions of high vacuum or Ar gas, in order to further increase the consistency and mechanical property of poor product, the isobaric processing of heat is carried out to sintered blank.MIM technique is introduced the preparation of TC11 titanium alloy product by the present invention, improves the production efficiency of product.
Description
Technical field
The invention patent relates to a kind of preparation methods of TC11 alloy components.
Background technique
TC11 alloy is a kind of alpha+beta biphase titanium alloy, is had good high-temperature behavior (mechanical strength, creep-resistant property),
It can be used for a long time under the conditions of 500 DEG C, be a kind of excellent aerospace structure material, be commonly used in the pressure of aero-engine
The structural members such as machine disk, blade, drum barrel.
TC11 alloy deformation ability is poor, and main machining method includes cutting and high-temp plastic processing.During the cutting process, hold
Easy temperature increases, and tool wear is serious, adversely affects to the surface roughness of product.And in high-temp plastic process
In, the forming temperature range of TC11 is relatively narrow, and technological parameter is sensitive, seriously affects the stability of product, causes processing efficiency low.
Metal powder injection molded (MIM) is used as a kind of near-net-shape technology, equal in preparation complex geometry, tissue
It has a clear superiority in terms of even, high performance product, titanium alloy is made to have broader practice prospect.
Patent of invention content
The purpose of the invention patent is to provide a kind of preparation method of efficient TC11 alloy components.
Realize the invention patent purpose technical solution be: it is of the invention the preparation method comprises the following steps:
A, TC11 pre-alloyed powder is prepared.
B, preparation modeling based binder system, ingredient POM:75-90wt%；Skeletal support agent: 5-20wt%；Lubrication
Agent: 1-5wt%；Antioxidant: 1-5wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by 1/9~1/4 mass ratio, then in protection gas
It is kneaded in atmosphere, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 180-200 DEG C, and mould temperature is 100-
130 DEG C, injection pressure 150-200MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 100-140 DEG C, is urged
Changing the time is 3-10 hours, and leading to acid amount is 2-10ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1250-1400 DEG C, and time 2-5h is obtained
TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment；Temperature is 920 ± 30 DEG C, time 1-5h, pressure
Power is 100-150MPa.
Above-mentioned TC11 pre-alloyed powder oxygen content is less than or equal to 2000ppm.
TC11 pre-alloyed powder partial size described in above-mentioned step A includes that partial size is greater than 45 μm and less than or equal to 45 μm
Powder, powder of the partial size greater than 45 μm must not exceed the 5% of total quantity, and powder of the partial size less than or equal to 45 μm cannot be less than sum
The 95% of amount.
It include that atomization method is not limited only to aerosolization, plasma mist in the preparation process of above-mentioned TC11 pre-alloyed powder
The methods of change, plasma spheroidization, plasma rotating electrode atomization.
Above-mentioned skeletal support agent is at least one of PP, PE, HDPE, EVA.
Above-mentioned lubricant is at least one of SA, paraffin, palm wax.
Above-mentioned protective atmosphere is vacuum or Ar gas.
Relative density >=99.5% of finished product, yield strength >=900MPa, tensile strength >=1000MPa, elongation percentage >=
10%.
The present invention has the effect of positive: (1) MIM technique is introduced the preparation of TC11 titanium alloy product by the present invention, can be with
Prepare the product of various different shape complexity.
(2) present invention is by the selection of selection and binder to powder and the preparation of feeding, to make each of preparation
A product of different shapes has excellent mechanical property.
(3) MIM technique by being introduced the preparation of TC11 titanium alloy product by the present invention, and passes through and different ginsengs is arranged
Number, to improve the production efficiency of product.
Specific embodiment
(embodiment one)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:75wt%；Skeletal support agent: 20wt%；Lubricant:
1wt%；Antioxidant: 4wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:4, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is PP；Lubricant is SA；Step
Protective atmosphere described in C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa, tensile strength
1000MPa, elongation percentage 10%.
(embodiment two)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:77wt%；Skeletal support agent: 18wt%；Lubricant:
1wt%；Antioxidant: 4wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:4, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is PE；Lubricant is paraffin；Step
Protective atmosphere described in rapid C can be set to Ar gas；The relative density 99.5% of finished product, yield strength 900MPa, tension are strong
Spend 1000MPa, elongation percentage 10%.
(embodiment three)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:79wt%；Skeletal support agent: 16wt%；Lubricant:
2wt%；Antioxidant: 3wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:5, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is EVA；Lubricant is palm
Wax；Protective atmosphere described in step C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa resist
Tensile strength 1000MPa, elongation percentage 10%.
(example IV)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:81wt%；Skeletal support agent: 14wt%；Lubricant:
2wt%；Antioxidant: 3wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:5, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is HDPE；Lubricant is palm
Wax；Protective atmosphere described in step C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa resist
Tensile strength 1000MPa, elongation percentage 10%.
(embodiment five)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:83wt%；Skeletal support agent: 12wt%；Lubricant:
2wt%；Antioxidant: 3wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:6, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is PP；Lubricant is palm wax；
Protective atmosphere described in step C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa, tension
Intensity 1000MPa, elongation percentage 10%.
(embodiment six)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:85wt%；Skeletal support agent: 10wt%；Lubricant:
3wt%；Antioxidant: 2wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:6, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is EVA；Lubricant is SA；Step
Protective atmosphere described in rapid C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa, tension are strong
Spend 1000MPa, elongation percentage 10%.
(embodiment seven)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:86wt%；Skeletal support agent: 9wt%；Lubricant:
3wt%；Antioxidant: 2wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:7, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is PE；Lubricant is paraffin；Step
Protective atmosphere described in rapid C can be set to Ar gas；The relative density 99.5% of finished product, yield strength 900MPa, tension are strong
Spend 1000MPa, elongation percentage 10%.
(embodiment eight)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:87wt%；Skeletal support agent: 8wt%；Lubricant:
4wt%；Antioxidant: 1wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:7, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is EVA；Lubricant is palm
Wax；Protective atmosphere described in step C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa resist
Tensile strength 1000MPa, elongation percentage 10%.
(embodiment nine)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:88wt%；Skeletal support agent: 7wt%；Lubricant:
4wt%；Antioxidant: 1wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:8, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is EVA；Lubricant is paraffin；
Protective atmosphere described in step C can be set to vacuum；The relative density 99.5% of finished product, yield strength 900MPa, tension
Intensity 1000MPa, elongation percentage 10%.
(embodiment ten)
The present invention has follow steps:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:90wt%；Skeletal support agent: 5wt%；Lubricant:
1wt%；Antioxidant: 4wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by the mass ratio of 1:8, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 190 DEG C, and mould temperature is 120 DEG C, note
Injection pressure is 180MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 125 DEG C, when catalysis
Between be 8 hours, lead to acid amount be 6ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1350 DEG C, and time 4h obtains TC11 product；
G, the TC11 product for coming out sintering carries out hip treatment, further increases mechanical property；Temperature is 920
DEG C, time 3h, pressure 130MPa.
Wherein, TC11 pre-alloyed powder oxygen content 2000ppm described in step A, TC11 prealloy described in step A
Powder diameter includes that partial size is greater than 45 μm and the powder less than or equal to 45 μm, and powder of the partial size greater than 45 μm must not exceed total quantity
5%, partial size cannot be less than the 95% of total quantity less than or equal to 45 μm of powder amount.
The atomization method that the preparation process of TC11 pre-alloyed powder is included is not limited only to aerosolization, plasma is atomized, etc.
The methods of ion nodularization, plasma rotating electrode atomization；Skeletal support agent described in step B is HDPE；Lubricant is palm
Wax；Protective atmosphere described in step C can be set to Ar gas；The relative density 99.5% of finished product, yield strength 900MPa resist
Tensile strength 1000MPa, elongation percentage 10%.
Particular embodiments described above has carried out into one the purpose of the invention patent, technical scheme and beneficial effects
Step is described in detail, it should be understood that being not limited to this foregoing is merely the specific embodiment of the invention patent
Patent of invention, all within the spirit and principle of the invention patent, any modification, equivalent substitution, improvement and etc. done should all wrap
Containing within the scope of protection of the patent of the invention.
Claims (7)
1. a kind of preparation method of TC11 alloy components, it is characterised in that the following steps are included:
A, TC11 pre-alloyed powder is prepared；
B, preparation modeling based binder system, ingredient POM:75-90wt%；Skeletal support agent: 5-20wt%；Lubricant: 1-
5wt%；Antioxidant: 1-5wt%；
C, based binder system and TC11 pre-alloyed powder will be moulded to weigh by 1/9~1/4 mass ratio, then in protective atmosphere
It is kneaded, obtains feeding；Mixing time is 30-200min, and melting temperature is 180-200 DEG C；
D, feeding is injected on injection machine, obtains injection base；Injection temperature is 180-200 DEG C, and mould temperature is 100-130
DEG C, injection pressure 150-200MPa；
E, injection base is subjected in acid medium catalysis degreasing, obtains degreased blank；Catalytic temperature is 100-140 DEG C, when catalysis
Between be 3-10 hour, lead to acid amount for 2-10ml/min；
F, degreased blank is sintered under high vacuum or Ar atmosphere, temperature is 1250-1400 DEG C, time 2-5h, obtains TC11 production
Product；
G, the TC11 product for coming out sintering carries out hip treatment；Temperature is 920 ± 30 DEG C, time 1-5h, and pressure is
100-150MPa。
2. a kind of preparation method of TC11 alloy components according to claim 1, it is characterised in that: described in step A
TC11 pre-alloyed powder oxygen content is less than or equal to 2000ppm.
3. according to claim 1 or a kind of preparation method of 2 one of them TC11 alloy components, it is characterised in that: step A
Described in TC11 pre-alloyed powder partial size include that partial size is greater than 45 μm and the powder less than or equal to 45 μm, partial size is greater than 45 μm
Powder must not exceed the 5% of total quantity, and powder of the partial size less than or equal to 45 μm cannot be less than the 95% of total quantity.
4. a kind of preparation method of TC11 alloy components according to claim 1, it is characterised in that: described in step A
The atomization method for including in the preparation process of TC11 pre-alloyed powder is not limited only to aerosolization, plasma atomization, plasma spheroidization
The methods of with plasma rotating electrode atomization.
5. a kind of preparation method of TC11 alloy components according to claim 1, it is characterised in that: bone described in step B
Frame proppant is at least one of PP, PE, HDPE, EVA.
6. a kind of preparation method of TC11 alloy components according to claim 1, it is characterised in that: profit described in step B
Lubrication prescription is at least one of SA, paraffin, palm wax.
7. a kind of preparation method of TC11 alloy components according to claim 1, it is characterised in that: guarantor described in step C
Protecting atmosphere is vacuum or Ar gas.
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