CN109773428A - A method of the iron-base superalloy annular element with internal feature connects Kufil - Google Patents
A method of the iron-base superalloy annular element with internal feature connects Kufil Download PDFInfo
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- CN109773428A CN109773428A CN201910139835.8A CN201910139835A CN109773428A CN 109773428 A CN109773428 A CN 109773428A CN 201910139835 A CN201910139835 A CN 201910139835A CN 109773428 A CN109773428 A CN 109773428A
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- kufil
- annular element
- iron
- base superalloy
- connection
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Abstract
The method for the iron-base superalloy annular element connection Kufil that the invention proposes a kind of with internal feature.This method includes the preparation of high temperature alloy and Kufil annular element, the preparation of jacket, assembly, vacuum processing and sealing, hot isostatic pressing diffusion connection procedure control and post-processing.A kind of method of iron-base superalloy annular element connection Kufil with internal feature proposed by the present invention is to take hot isostatic pressing Diffusion bonding techniques, connect Kufil with the superalloy annular part hair with internal feature at diffusion under high temperature and high pressure environment, shaped objects annular element.The connection of high temperature alloy and Kufil of this method in addition to can preferably realize feature, has also been able to satisfy the connection of undistinguishable high temperature alloy and Kufil, avoids articulamentum peeling, chip off-falling, layering and separates with matrix, and connection layer porosity is lower.
Description
Technical field
The invention belongs to iron-base superalloy manufacturing fields, connect more particularly to iron-base superalloy and Kufil diffusion
Connect aspect.
Background technique
In recent years, low-expansion iron-base superalloy was widely used in the fields such as Aeronautics and Astronautics, the energy and metallurgy.
When iron-base superalloy is connect with Kufil material, due to expansion coefficient difference between material, using traditional welding, meeting
The problems such as there are articulamentums to peel off, layering and connection layer porosity are higher, for having the iron-base superalloy ring of internal feature
It is particularly evident when shape part joint forming.
Hot isostatic pressing Diffusion bonding techniques are to move the atom for being connected material quickly under the action of high temperature, high pressure
Dynamic, phase counterdiffusion, finally in intimate surface contact, the technique that links together in the solid state.The skills such as more traditional welding, soldering
Art, the connection which has many advantages, such as that bonding strength is high, microstructure is complete, is able to achieve between different materials.
Summary of the invention
Here, the method for the iron-base superalloy annular element connection Kufil that set forth herein a kind of with internal feature, packet
Include the following steps carried out in order:
1) prepared by annular element.The iron-based high temp with internal feature is prepared according to the structure feature of final circular connector to close
Golden annular element and Kufil annular element.To guarantee connector dimensional accuracy, Kufil annular element is with iron-base superalloy ring
It is processed on the basis of shape part internal diameter, meets clearance fit.That is the outer diameter of Kufil annular element and iron-base superalloy annular
Part internal diameter contact surface reserves certain interval.
2) prepared by jacket.Jacket is designed and processes according to iron-base superalloy connector shape, which includes cover board
It is formed with U-loop slot two parts.To guarantee connector dimensional accuracy, U-loop slot is with iron-base superalloy annular element and Kufil
It is processed on the basis of golden annular element size, meets clearance fit.Cover board and the assembly of U-loop slot, meet clearance fit.
3) it assembles.Iron-base superalloy annular element and Kufil annular element are assembled in U-loop slot, then cover board is filled
It fits on U-loop slot.
4) it is vacuum-treated and seals.After assembly, vacuum processing and soldering and sealing are carried out to jacket using electron-bombardment welding.
5) hot isostatic pressing diffusion connection.The good jacket of above-mentioned soldering and sealing is put into hot isostatic apparatus, in high temperature and high pressure environment
Under, make iron-base superalloy annular element and Kufil annular element that diffusion connection occur, generates the semi-finished product of connector.
6) post-production.Using the method for machining, jacket and clout are removed, the iron-based high temp with internal feature is obtained
Alloy and Kufil circular connector.
7) in the step 1, iron-based high-temperature alloy material can be GH907, GH903, GH909 etc., iron-base superalloy
The design of annular element internal diameter has feature, is all made of machining preparation；Copper silver ratio can change in Kufil material, and can be with
For alloys such as copper silver-colored zincs.Iron-base superalloy annular element outer diameter and Kufil annular element inner diameter edge carry out fillet processing, connect
Touching surface need to be processed by shot blasting, and carry out acetone ultrasonic cleaning.
8) in the step 2, sheath material is oxygen-free copper, cover board and U-loop slot using machining preparation, and carries out third
Ketone ultrasonic cleaning.
9) in the step 3, deoxidation film process is carried out to copper silver-colored zinc annular element surface using scouring pad etc. before assembling, then
Kufil surface is cleaned with acetone.
10) in the step 4, the vacuum degree of vacuum electron beam soldering and sealing is 10-3Pa or more.
11) in the step 5, when hip treatment, increasing temperature and pressure 1.5h to 680~700 DEG C of temperature, pressure 170~
190MPa, heat-insulation pressure keeping 3h, using 1.5h to 150 DEG C, then the pressure release of deflating of cooling down of not deflating.
12) method of the iron-base superalloy annular element diffusion connection Kufil provided by the invention with internal feature is
By hot isostatic pressing technique to iron-base superalloy annular element inner surface diffusion one layer of copper silver of connection with internal feature.This side
The connection of high temperature alloy and Kufil of the method in addition to can preferably realize feature has also been able to satisfy undistinguishable high temperature and has closed
The connection of gold and Kufil, avoids articulamentum peeling, chip off-falling, layering and separates with matrix, and connection layer porosity is lower.Copper silver
Alloy layer thickness can change, and increase its scope of application.Also, outside copper removal silver alloy, other copper-bearing alloys can be adopted
It is diffused and is connect with iron-base superalloy with this method.
Detailed description of the invention
Fig. 1 is the iron-base superalloy annular element diffusion connection Kufil using provided by the invention with internal feature
The structural schematic diagram of connector formed thereby when method.
Fig. 2 is the iron-base superalloy annular element diffusion connection Kufil using provided by the invention with internal feature
The structural schematic diagram of the cover board of jacket, U-loop slot when method.
Fig. 3 is the iron-base superalloy annular element diffusion connection Kufil using provided by the invention with internal feature
Structural schematic diagram after being assembled when method.
Fig. 4 is the iron-base superalloy annular element diffusion connection Kufil using provided by the invention with internal feature
The structural schematic diagram of connector semi-finished product formed thereby when method.
Specific embodiment
With reference to the accompanying drawing with specific example to the iron-base superalloy annular element provided by the invention with internal feature
The method of diffusion connection Kufil is described in detail.
As shown in Fig. 1-Fig. 4, the iron-base superalloy annular element diffusion connection copper silver provided by the invention with internal feature
The method of alloy includes
The following steps carried out in order:
1) the iron-base superalloy annular element 4 with internal feature is prepared according to the structure feature of final circular connector 5
With Kufil annular element 3.To guarantee connector dimensional accuracy, Kufil annular element 3 is in iron-base superalloy annular element 4
It is processed on the basis of diameter size, meets clearance fit.I.e. in the outer diameter of Kufil annular element 3 and iron-base superalloy annular element 4
Diameter contact surface reserves certain interval.Iron-based high-temperature alloy material can be GH907, GH903, GH909 etc., iron-base superalloy ring
The design of shape part internal diameter has feature, is all made of machining preparation；Copper silver ratio can change in Kufil material, and can be
The alloys such as copper silver-colored zinc.Iron-base superalloy annular element outer diameter and Kufil annular element inner diameter edge carry out fillet processing, contact
Surface need to be processed by shot blasting, and carry out acetone ultrasonic cleaning.
2) jacket is designed and processes according to 5 shape of iron-base superalloy connector, which includes cover board 1 and U-loop
2 two parts of slot composition.To guarantee connector dimensional accuracy, U-loop slot 2 is with iron-base superalloy annular element 4 and Kufil ring
It is processed on the basis of 3 size of shape part, meets clearance fit.Cover board 1 and U-loop slot 2 assemble, and meet clearance fit.Sheath material is
Oxygen-free copper, cover board 1 and U-loop slot 2 carry out acetone ultrasonic cleaning using machining preparation.
3) iron-base superalloy annular element 4 and Kufil annular element 3 are assembled in U-loop slot 2, then cover board 1 is filled
It fits on U-loop slot 2.Before assembly, deoxidation film process is carried out to copper silver-colored zinc annular element surface using scouring pad etc., then use acetone
Kufil surface is cleaned.
4) after assembling, vacuum processing and soldering and sealing are carried out to jacket using electron-bombardment welding.Vacuum electron beam soldering and sealing it is true
Reciprocal of duty cycle is 10-3Pa or more.
5) it puts the good jacket of above-mentioned soldering and sealing into hot isostatic apparatus, under high temperature and high pressure environment, makes iron-base superalloy
Diffusion connection occurs for annular element 4 and Kufil annular element 3, generates the semi-finished product 6 of connector.When hip treatment, heating
1.5h to 680~700 DEG C of temperature of boosting, 170~190MPa of pressure, heat-insulation pressure keeping 3h, using the 1.5h to 150 that cools down that do not deflate
DEG C, then pressure release of deflating.
6) jacket and clout are removed using the method for machining using the method for machining, obtains band internal feature
Iron-base superalloy and Kufil circular connector 5.
7) according to the difference for being formed by iron-base superalloy Yu copper silver circular connector shape and feature, corresponding cover board
1, the shape of U-loop slot 2, iron-base superalloy annular element 4 and Kufil annular element 3 is different, for example iron-based high temp closes
Golden annular element internal feature can also be changed according to part demand, it might even be possible to be saved.The treatment conditions of hot isostatic pressing are by root
It is adjusted correspondingly according to iron-base superalloy, Kufil material and sheath material.Kufil thickness degree can change, and increase
Its scope of application is added.Also, outside copper removal silver alloy, this method and iron-base superalloy is can be used in other copper-bearing alloys
It is diffused connection.
Claims (7)
1. a kind of method of the iron-base superalloy annular element connection Kufil with internal feature, it is characterised in that: described
A method of the iron-base superalloy annular element diffusion connection copper silver-colored zinc alloy with internal feature, including carrying out down in order
Column step:
1) according to the structure feature of final circular connector 5 prepare the iron-base superalloy annular element (4) with internal feature and
Kufil annular element (3).To guarantee connector dimensional accuracy, Kufil annular element (3) is with iron-base superalloy annular element
(4) it is processed on the basis of internal diameter, meets clearance fit.That is the outer diameter of Kufil annular element (3) and iron-base superalloy ring
Shape part (4) internal diameter contact surface reserves certain interval.
2) jacket is designed and processes according to iron-base superalloy connector (5) shape, which includes cover board (1) and U-loop
Slot (2) two parts composition.To guarantee connector dimensional accuracy, U-loop slot (2) is with iron-base superalloy annular element (4) He Tongyin
It is processed on the basis of alloy annular part (3) size, meets clearance fit.Cover board (1) and U-loop slot (2) assembly, meet gap and match
It closes.
3) iron-base superalloy annular element (4) and Kufil annular element (3) are assembled in U-loop slot (2), then by cover board
(1) it is assemblied on U-loop slot (2).
4) after assembling, vacuum processing and soldering and sealing are carried out to jacket using electron-bombardment welding.
5) it puts the good jacket of above-mentioned soldering and sealing into hot isostatic apparatus, under high temperature and high pressure environment, keeps iron-base superalloy annular
Diffusion connection occurs for part (4) and Kufil annular element (3), generates the semi-finished product (6) of connector.
6) jacket and clout are removed, the iron with internal feature is obtained using the method for machining using the method for machining
Based high-temperature alloy and Kufil circular connector (5).
2. iron-based high-temperature alloy material described in claim 1 can be GH907, GH903, GH909 etc., iron-base superalloy ring
The design of shape part internal diameter has feature, is all made of machining preparation；Copper silver ratio can change in Kufil material, and can be
The alloys such as copper silver-colored zinc.Iron-base superalloy annular element outer diameter and Kufil annular element inner diameter edge carry out fillet processing, contact
Surface need to be processed by shot blasting, and carry out acetone ultrasonic cleaning.
3. sheath material described in claim 1 is oxygen-free copper, cover board and U-loop slot using machining preparation, and carries out third
Ketone ultrasonic cleaning.
4. deoxidation film process is carried out to copper silver-colored zinc annular element surface using scouring pad etc. before assembly described in claim 1, then
Kufil surface is cleaned with acetone.
5. the vacuum degree of vacuum electron beam soldering and sealing described in claim 1 is 10-3Pa or more.
6. when hip treatment according to claim 1, increasing temperature and pressure 1.5h to 680~700 DEG C of temperature, pressure 170
~190MPa, heat-insulation pressure keeping 3h, using 1.5h to 150 DEG C, then the pressure release of deflating of cooling down of not deflating.
7. the present invention has also been able to satisfy the connection of undistinguishable high temperature alloy and Kufil, Kufil thickness degree can become
Dynamic, and outside copper removal silver alloy, the alloy of other cuprics, which can be used this method and be diffused with high temperature alloy, to be connect.
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| CN201910139835.8A CN109773428A (en) | 2019-02-26 | 2019-02-26 | A method of the iron-base superalloy annular element with internal feature connects Kufil |
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| CN201910139835.8A CN109773428A (en) | 2019-02-26 | 2019-02-26 | A method of the iron-base superalloy annular element with internal feature connects Kufil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112725714A (en) * | 2020-12-04 | 2021-04-30 | 中国工程物理研究院材料研究所 | Method for refining uranium niobium alloy surface inclusions |
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| CN108788655A (en) * | 2018-08-21 | 2018-11-13 | 北京航空航天大学 | A kind of method of nickel base superalloy annular element diffusion connection Kufil |
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2019
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| CN104493167A (en) * | 2014-11-20 | 2015-04-08 | 中国航空工业集团公司北京航空材料研究院 | Method for forming powder high-temperature alloy annular member |
| CN105537274A (en) * | 2016-02-17 | 2016-05-04 | 安泰科技股份有限公司 | Preparation method of roll collar for rolling mill and roll collar prepared with method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112725714A (en) * | 2020-12-04 | 2021-04-30 | 中国工程物理研究院材料研究所 | Method for refining uranium niobium alloy surface inclusions |
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Application publication date: 20190521 |