CN110014268A - A kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with - Google Patents
A kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with Download PDFInfo
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- CN110014268A CN110014268A CN201910281706.2A CN201910281706A CN110014268A CN 110014268 A CN110014268 A CN 110014268A CN 201910281706 A CN201910281706 A CN 201910281706A CN 110014268 A CN110014268 A CN 110014268A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
- C22F1/18—High-melting or refractory metals or alloys based thereon
- C22F1/183—High-melting or refractory metals or alloys based thereon of titanium or alloys based thereon
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Abstract
The invention belongs to aero-engine designing for manufacturing fields, more particularly to a kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, the following steps are included: (1) is mingled with the requirement of size according to diskware and hard α, titanium alloy rod bar, hard α are mingled be cut into it is suitably sized；(2) it by forging simulation, determines the position that is mingled in bar, punches in the position, the hard α of well cutting is mingled in putting hole；(3) bar is welded along cut surface；(4) after the completion of bar welding, heat-insulation pressure keeping processing is carried out in merging hot pressing furnace；(5) disk base is unidirectionally forged into using the bar that implantation hard α is mingled with；(6) it is handled according to the heat treating regime of diskware；(7) diskware after processing is carried out being mingled with detection and positioning；(8) centrifugal impeller is processed into according to diskware design requirement.The present invention solves the problems, such as that the service life probability distributive function of Current Domestic aero-engine is difficult to realize, and meets the needs of engine Certification.
Description
Technical field
The invention belongs to aero-engine designing for manufacturing fields, and in particular to it is a kind of include titanium alloy that hard α is mingled with from
Lobus cardiacus wheel diskware manufacturing method.
Background technique
With the promotion of domestic industry level, civil engine obtains the development advanced by leaps and bounds, and engine seaworthiness is recognized
Card is that engine realizes civilian the only way which must be passed.However in aviation flight history, there are many aircraft accidents and titanium alloy member
Metallurgical quality has direct relationship.From 1962 between nineteen ninety, it is due to smelting technology that the U.S., which shares 25 aircraft accidents,
Caused by caused titanium alloy metallurgical imperfection, in which: 19 are because (the hard α is mingled with) defect that is mingled in titanium alloy causes
, in addition 6 are because caused by component segregation, it is clear that the hard α inclusion defect in titanium alloy has become titanium alloy member
One of principal element of material failure.Therefore, regulation must assess titanium conjunction in domestic Civil Aviation Administration seaworthiness clause FAA-AC33.15
Hard α is mingled with the influence to the limit longevity part service life in gold.However the domestic influence in the inclusion defect diskware service life is in starting at present
Stage is not yet broken through and includes the technology of preparing that hard α is mingled with titanium alloy diskware, therefore can not carry out full-scale include and be mingled with diskware
Durability analysis, this seriously affects the Certification process of aero-engine.
Summary of the invention
In order to meet the needs of current domestic air mail engine Certification, realizes and be mingled in titanium alloy to the engine limit longevity
The Life Assessment Technology of part, the object of the present invention is to provide a kind of titanium alloy centrifugal impeller diskware manufactures for including hard α and being mingled with
Method, it is possible to produce include the titanium alloy diskware being mingled with, the service life probability risk for solving Current Domestic aero-engine is commented
Estimate the problem of being difficult to realize, meets the needs of engine Certification.
The technical scheme is that
A kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, comprising the following steps:
(1) material prepares: titanium alloy rod bar is cut in the size requirement being mingled with according to die-forging of forge pieces technique and inside hard α
At the specification for meeting forging technology, hard α is mingled with using wire cutting and is cut into graininess；
(2) defect is placed in: determining forging stick by deforming simulation according to the status requirement that hard α inside diskware is mingled with
Material inner inclusion position, the plane locating for the position carry out sawing, carry out after sawing face is polished the location of being mingled with
Punching, and the hard α of well cutting is mingled in putting hole；
(3) bar welds: along the cut surface of bar, being welded bar using vacuum welding technology, and to weld seam
Position carries out grinding process；
(4) bar hot pressing: the bar after welding is placed in hot pressing furnace and carries out heat-insulation pressure keeping, makes bar along cut surface
Realize metallurgical bonding；
(5) diskware die forging: using isothermal, unidirectional forging technology, and the bar that hard α is mingled with will be included after hot-pressing processing and is prepared
At disk base；
(6) it is heat-treated: being heat-treated according to the heat treating regime that diskware requires；
(7) it is mingled with detection: hard α inside disk base is mingled with immersed ultrasonic test technology using contact and is detected, and
It is accurate to determine the position being mingled with；
(8) diskware is processed: the positioning process of diskware is carried out according to the position that hard α inside disk base is mingled with, process needs
Carry out the detection and positioning of defect at least twice；Diskware after processing carries out defects detection, and is positioned.
The titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, in step (1), hard α is mingled with
The size range of grain is 0.3~3mm.
The titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, it is locating being mingled in step (2)
Position punching size be mingled with size with hard α and match.
The titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, in step (4), heat-insulation pressure keeping
Technological parameter is as follows: holding temperature is 930~950 DEG C, and heat preservation pressure is 100~150MPa, and soaking time is 2~6h.
The titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, in step (5), isothermal, unidirectional forging
The technological parameter made is as follows: forging range be 950~970 DEG C, 4~6mm/s of Forging Equipment Speed, overall reduction be 60~
70%.
Design philosophy of the invention is: the position of defect in bar is determined using forging process sunykatuib analysis, using artificial
It is implanted into defect, the metallurgical bonding of defect and titanium alloy is realized by hot isostatic pressing, is finally prepared using isothermal unidirectional forging technology
Include the titanium alloy diskware that hard α is mingled with.
Advantages of the present invention and beneficial effect are:
(1) method provided by the invention may be implemented to include the manufacture that hard α is mingled with diskware, meet aero-engine seaworthiness
The design requirement of certification；
(2) use scope of the present invention is extensive, is not limited by titanium alloy material, can be applied to a variety of titanium alloy diskwares
Manufacture.
Detailed description of the invention
Fig. 1 is that titanium alloy rod bar cuts the bar figure after example and welding.Wherein, (a) is that bar cuts instance graph, (b)
Welding bar after being mingled with for cutting merging.
Fig. 2 is that the hard α that wire cutting is cut is mingled with sample drawing.
Fig. 3 is that machining process diskware defects detection and positioning are schemed.
Fig. 4 is that the diskware and inside hard α after machining are mingled with detection figure.
Specific embodiment
In the specific implementation process, the present invention includes the titanium alloy centrifugal impeller diskware manufacturing method that hard α is mingled with, including
Following steps:
(1) material prepares: titanium alloy rod bar is cut in the size requirement being mingled with according to die-forging of forge pieces technique and inside hard α
At the specification for meeting forging technology, hard α is mingled with using wire cutting and is cut into certain size.
(2) defect is placed in: determining forging stick by deforming simulation according to the status requirement that hard α inside diskware is mingled with
Material inner inclusion position, the plane locating for the position carry out sawing, carry out after sawing face is polished the location of being mingled with
Punching, and the hard α of well cutting is mingled in putting hole.
(3) bar welds: along the cut surface of bar, bar is welded (Fig. 1 b) using vacuum welding technology, and
Grinding process is carried out to weld seam position.
(4) bar hot pressing: the bar after welding is placed in hot pressing furnace and carries out heat-insulation pressure keeping, makes bar along cut surface
Realize metallurgical bonding.
(5) diskware die forging: using isothermal, unidirectional forging technology, and the bar that hard α is mingled with will be included after hot-pressing processing and is prepared
At disk base.
(6) it is heat-treated: being heat-treated according to the heat treating regime that diskware requires.
(7) it is mingled with detection: hard α inside disk base is mingled with immersed ultrasonic test technology using contact and is detected, and
It is accurate to determine the position being mingled with.
(8) diskware is processed: the positioning process of diskware is carried out according to the position that hard α inside disk base is mingled with, process needs
Carry out the detection and positioning of defect at least twice.Diskware after processing carries out defects detection, and is positioned.
In the following, being further elaborated on by embodiment to the present invention.
Embodiment 1:
In the present embodiment, the titanium alloy centrifugal impeller diskware manufacturing method that hard α is mingled with is included, comprising the following steps:
(1) material prepares: the size being mingled with according to die-forging of forge pieces technique and inside hard α requires, and by titanium alloy, (trade mark is
Ti-6Al-4V) bar is cut into the specification for meeting forging technology, is mingled with hard α using wire cutting and is cut into certain size, hard
The size of α Particulate Inclusion is 0.5mm.
(2) defect is placed in: determining forging stick by deforming simulation according to the status requirement that hard α inside diskware is mingled with
Material inner inclusion position, the plane locating for the position carry out sawing (Fig. 1 a), are being mingled with locating position after sawing face is polished
It sets and is punched, and the hard α of well cutting is mingled in (Fig. 2) putting hole, be mingled with location punching size and hard α
It is mingled with size matching.
(3) bar welds: along the cut surface of bar, bar is welded (Fig. 1 b) using vacuum welding technology, and
Grinding process is carried out to weld seam position.
(4) bar hot pressing: the bar after welding is placed in hot pressing furnace and carries out heat-insulation pressure keeping, makes bar along cut surface
Realize metallurgical bonding, holding temperature is 930 DEG C, and heat preservation pressure is 100MPa, soaking time 3h.
(5) diskware die forging: using isothermal, unidirectional forging technology, and the bar that hard α is mingled with will be included after hot-pressing processing and is prepared
At disk base.Forging temperature is 960 DEG C, Forging Equipment Speed 5mm/s, overall reduction 65%.
(6) it is heat-treated: being heat-treated according to the heat treating regime that diskware requires: 960 ± 10 DEG C/2h, air-cooled.
(7) it is mingled with detection: hard α inside disk base is mingled with immersed ultrasonic test technology using contact and is detected, and
It is accurate to determine the position being mingled with.
(8) diskware is processed: the positioning process of diskware is carried out according to the position that hard α inside disk base is mingled with, process needs
Carry out detection and positioning (Fig. 3) of four defects.Diskware after processing carries out defects detection, and is positioned (Fig. 4).
Through detecting, the present embodiment produces the titanium alloy diskware for including and being mingled with, and solves Current Domestic aero-engine
The problem of service life probability distributive function is difficult to realize meets the needs of engine Certification.
Embodiment 2:
In the present embodiment, the titanium alloy centrifugal impeller diskware manufacturing method that hard α is mingled with is included, comprising the following steps:
(1) material prepares: the size being mingled with according to die-forging of forge pieces technique and inside hard α requires, and by titanium alloy, (trade mark is
Ti-6Al-4V) bar is cut into the specification for meeting forging technology, is mingled with hard α using wire cutting and is cut into certain size, hard
The size of α Particulate Inclusion is 1mm.
(2) defect is placed in: determining forging stick by deforming simulation according to the status requirement that hard α inside diskware is mingled with
Material inner inclusion position, the plane locating for the position carry out sawing (Fig. 1 a), are being mingled with locating position after sawing face is polished
It sets and is punched, and the hard α of well cutting is mingled in (Fig. 2) putting hole, be mingled with location punching size and hard α
It is mingled with size matching.
(3) bar welds: along the cut surface of bar, bar is welded (Fig. 1 b) using vacuum welding technology, and
Grinding process is carried out to weld seam position.
(4) bar hot pressing: the bar after welding is placed in hot pressing furnace and carries out heat-insulation pressure keeping, makes bar along cut surface
Realize metallurgical bonding, holding temperature is 950 DEG C, and heat preservation pressure is 150MPa, soaking time 5h.
(5) diskware die forging: using isothermal, unidirectional forging technology, and the bar that hard α is mingled with will be included after hot-pressing processing and is prepared
At disk base.Forging temperature is 970 DEG C, Forging Equipment Speed 6mm/s, overall reduction 70%.
(6) it is heat-treated: being heat-treated according to the heat treating regime that diskware requires: 770 ± 10 DEG C/4h, air-cooled.
(7) it is mingled with detection: hard α inside disk base is mingled with immersed ultrasonic test technology using contact and is detected, and
It is accurate to determine the position being mingled with.
(8) diskware is processed: the positioning process of diskware is carried out according to the position that hard α inside disk base is mingled with, process needs
Carry out the detection Yu positioning (Fig. 3) of defect three times.Diskware after processing carries out defects detection, and is positioned (Fig. 4).
Through detecting, the present embodiment produces the titanium alloy diskware for including and being mingled with, and solves Current Domestic aero-engine
The problem of service life probability distributive function is difficult to realize meets the needs of engine Certification.
In addition, it is described above, it is only that the part of embodiment in the present invention represents, the power of the present invention cannot be limited to this
Sharp range.For researcher in this field, it is described include hard α and be mingled with titanium alloy diskware manufacturing method can also apply
In the titanium alloy material of other trades mark and other metal materials (high temperature alloy, steel etc.).Therefore, technical solution under this invention and
Technical thought makes various other corresponding changes and modifications, still falls within the protection scope that the present invention is covered.
Claims (5)
1. a kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with, which comprises the following steps:
(1) material prepares: titanium alloy rod bar is cut into full by the size requirement being mingled with according to die-forging of forge pieces technique and inside hard α
Hard α is mingled with using wire cutting and is cut into graininess by the specification of sufficient forging technology；
(2) defect is placed in: being determined in forging bar according to the status requirement that hard α inside diskware is mingled with by deforming simulation
Portion is mingled with position, and the plane locating for the position carries out sawing, punches after sawing face is polished the location of being mingled with,
And the hard α of well cutting is mingled in putting hole；
(3) bar welds: along the cut surface of bar, being welded bar using vacuum welding technology, and to weld seam position
Carry out grinding process；
(4) bar hot pressing: the bar after welding is placed in hot pressing furnace and carries out heat-insulation pressure keeping, realizes bar along cut surface
Metallurgical bonding；
(5) diskware die forging: isothermal, unidirectional forging technology are used, the bar that hard α is mingled with will be included after hot-pressing processing and is prepared into disk
Base；
(6) it is heat-treated: being heat-treated according to the heat treating regime that diskware requires；
(7) it is mingled with detection: hard α inside disk base is mingled with immersed ultrasonic test technology using contact and is detected, and is accurate
Determine the position being mingled with；
(8) diskware is processed: carry out the positioning process of diskware according to the position that hard α inside disk base is mingled with, process need into
The detection and positioning of capable defect at least twice；Diskware after processing carries out defects detection, and is positioned.
2. the titanium alloy centrifugal impeller diskware manufacturing method described in accordance with the claim 1 for including hard α and being mingled with, feature exist
In in step (1), the size range of hard α Particulate Inclusion is 0.3~3mm.
3. the titanium alloy centrifugal impeller diskware manufacturing method described in accordance with the claim 1 for including hard α and being mingled with, feature exist
In being matched the location of being mingled with punching size and being mingled with size with hard α in step (2).
4. the titanium alloy centrifugal impeller diskware manufacturing method described in accordance with the claim 1 for including hard α and being mingled with, feature exist
In in step (4), the technological parameter of heat-insulation pressure keeping is as follows: holding temperature be 930~950 DEG C, heat preservation pressure be 100~
150MPa, soaking time are 2~6h.
5. the titanium alloy centrifugal impeller diskware manufacturing method described in accordance with the claim 1 for including hard α and being mingled with, feature exist
In in step (5), isothermal, the technological parameter unidirectionally forged are as follows: forging range is 950~970 DEG C, Forging Equipment Speed 4~
6mm/s, overall reduction are 60~70%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910281706.2A CN110014268A (en) | 2019-04-09 | 2019-04-09 | A kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with |
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| CN201910281706.2A CN110014268A (en) | 2019-04-09 | 2019-04-09 | A kind of titanium alloy centrifugal impeller diskware manufacturing method for including hard α and being mingled with |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191847A (en) * | 2020-09-22 | 2021-01-08 | 燕山大学 | Steel sample sintering forming method for artificially implanting inclusions |
| CN114433843A (en) * | 2022-04-11 | 2022-05-06 | 中国航发北京航空材料研究院 | Method for avoiding inclusions in powder high-temperature alloy disc |
| CN114894568A (en) * | 2022-04-20 | 2022-08-12 | 中国科学院金属研究所 | Preparation and detection method of plate-shaped tensile sample of hard alpha inclusion material in titanium alloy |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112191847A (en) * | 2020-09-22 | 2021-01-08 | 燕山大学 | Steel sample sintering forming method for artificially implanting inclusions |
| CN114433843A (en) * | 2022-04-11 | 2022-05-06 | 中国航发北京航空材料研究院 | Method for avoiding inclusions in powder high-temperature alloy disc |
| CN114894568A (en) * | 2022-04-20 | 2022-08-12 | 中国科学院金属研究所 | Preparation and detection method of plate-shaped tensile sample of hard alpha inclusion material in titanium alloy |
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Application publication date: 20190716 |