CN101444870A - Method for hot-sizing welded integral vane disk by utilizing electron beam - Google Patents
Method for hot-sizing welded integral vane disk by utilizing electron beam Download PDFInfo
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- CN101444870A CN101444870A CNA2008102469225A CN200810246922A CN101444870A CN 101444870 A CN101444870 A CN 101444870A CN A2008102469225 A CNA2008102469225 A CN A2008102469225A CN 200810246922 A CN200810246922 A CN 200810246922A CN 101444870 A CN101444870 A CN 101444870A
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Abstract
The invention relates to a method for hot-sizing a welded integral vane disk by utilizing an electron beam, which belongs to the hot-sizing technical field. The method comprises the steps as follows: (1) in the preparation step before welding, the integral vane disk is processed through regional marking based on data variation characteristic according to a vane disk component deformation data table, then the vane disk is cleared, and combined technical equipment is adopted to enable the integral vane disk to achieve the sizing demand; (2) in the electron beam sizing step, the input of electron beam energy is controlled by electron beam sizing parameters according to the deflection range, so as to determine the range for depth of fusion; (3) in the position degree measurement step after sizing, position degree measurement is carried out on the integral vane disk which is processed through electron beam sizing, and the obtained result is recorded, compared and analyzed; and (4) in the heat treatment step for eliminating stress, the integral vane disk whose deformation satisfied the control limit is processed through heat treatment for eliminating stress. Through sizing process, various sizes and position accuracies of welded integral vane disk components fully satisfy the finish machining demands, various performance indexes accord with relevant demands, and the welded integral vane disk components are machined in good quality currently.
Description
Technical field
The invention belongs to hot school shape technical field, particularly a kind of method of utilizing electron beam to the hot school of welded type blisk shape.
Background technology
The welded type blisk is complicated large welded structures, promptly utilize electron beam welding that the monomer forging blade is welded into a whole leaf joint, be welded into a blisk with dish again, be finish-machined to the blisk assembly at last, the weld seam length overall reaches 4000mm on this assembly.The manufacturing technology key point of welded type blisk should be the welding of whole leaf joint, but by technological preparation before the weldering, the welding tooling development, test such as layout of welding procedure route and welding condition optimization tackling key problem work, successfully realized the welding of whole leaf joint, but when carrying out electron beam welding with dish again after the processing of whole leaf joint, but because welding deformation and the influence of every accumulated error, cause the blisk assembly process area axial deformation to occur, blade angle is to overproof problems such as change in location, be difficult to satisfy finishing requirements, though successively take different process scheme and process system to heat-treat school shape twice, but all less than improving the circumstances that this assembly will face overproof payment even scrap.
Summary of the invention
In order to solve the blisk assembly process area axial deformation, blade angle appear to overproof problems such as change in location, the invention provides a kind of method of utilizing electron beam to the hot school of welded type blisk shape, the process area axial deformation (is compared with perfect condition, in the warpage that makes progress upward, maximum 2.8mm, minimum of a value 1.08mm, mean value 1.85mm), blade angle is to change in location (the azimuthal variation amount of false boss is in-0.6mm～0.6mm scope, and variable quantity is 1.2mm).
Technical scheme of the present invention is achieved in that a kind of method of utilizing electron beam to the hot school of welded type blisk shape, carries out according to the following steps:
(1) prepares before the weldering
According to the leaf dish assembly deformation data table of measuring, the position of need school shape is measured and indicated at the end at weld seam reverse side lock, surveying record according to deformable blade, by data variation characteristic, blisk is carried out regionality to indicate, clear up the leaf dish then, adopt assembled tool, the blisk assembling is reached school shape requirement;
(2) electron beam school shape
Carry out school shape selection of process parameters and determine that the formal welding parameter of blisk assembly is: high pressure is 150KV according to the blisk deformation data, speed of welding is 8.0～10mm/s, square wave, scan frequency is 50～80Hz, and scan amplitude is 0.8～1.2mm, and welding current is 40～43mA;
1. blisk assembly electron beam school shape parameter
According to the scope of deflection, the input of control beam energy, other parameter constant is only adjusted welding current, determines the scope of fusion penetration.
A) deflection is in (3.0～2.2) mm scope, formal welding line when adopting blisk combination in this zone, and fusion penetration is controlled at (28～33) mm;
B) deflection is in (2.2～1.7) mm scope, 2/3 times formal welding line when adopting blisk combination in this zone, and fusion penetration is controlled at (21～25) mm;
C) deflection is in (1.7～1.2) mm scope, 1/2 times formal welding line when adopting blisk combination in this zone, and fusion penetration is controlled at (15～20) mm;
D) deflection is in (1.2～0.5) mm scope, 1/4 times formal welding line when adopting blisk combination in this zone, and fusion penetration is controlled at (7～10) mm;
2. electron beam school shape program composition
Reach the deformed region that on assembly, identifies according to the blisk deformation data and carry out the shape program composition of electron beam school, realize of the correspondence control of electron beam school shape parameter deformed region;
(3) position measurement after the shape of school
Blisk after the shape of electron beam school is carried out position measurement, record in addition, and compare, analyze;
(4) heat treatment that eliminates stress
To the blisk of deflection in control range, heat treatment eliminates stress.
The specific embodiment
Example 1: is example with leaf joint with dish welding back process area axial deformation, and the electron beam thermal source has advantages such as concentration of energy, numerical control degree height, atmosphere cleaning, and the main technique step of the hot school of the electron beam of welded type blisk shape is as follows:
(1) prepares before the weldering
Adopt three coordinate machine to measure the distortion of 41 blades of welded type blisk, data see Table 1,
Table 1 leaf joint and dish welding front and back deformation data (mm)
Surveying record table according to deformable blade, adopt the oil pen on the shape locus circle internal diameter direction of electron beam school, to identify at the 15mm place, and make curvilinear path according to the data variation difference, with the diameter is that Φ 600mm electron beam trace circle is a theoretical center, deformation values adopts 10 times of amplification processing to carry out that sign, instrument is slide calliper rule, dial gauge and rotating torques, the blisk material is TC4, method for cleaning adopts clean silk to dip in to get acetone carefully to be cleared up, forbid adopting halide reagent cleaning part, bare-handed touch is forbidden at the shape position, school after the cleaning.Adopt assembled tool, the annular inner portion of the good blisk of clamping makes that 41 blades are in free state on the circumference.
(3) electron beam school shape
1. blisk assembly electron beam school shape parameter
Carry out school shape selection of process parameters and determine that the formal welding parameter of blisk assembly is: high pressure is 150KV according to the blisk deformation data, speed of welding is 8.0～10mm/s, square wave, and scan frequency is 50～80Hz, scan amplitude is 0.8～1.2mm; Welding current is 40～43mA;
The unit type that electron beam school shape is adopted is a KS120-G300KM-CNC high pressure vacuum electron-beam welder, and according to the blisk deformation data, school shape technological parameter sees Table 2.
Table 2 electron beam school shape parameter
| The welding position | Fusion penetration (mm) | Welding line (mA) | Speed of welding (mm/s) | Vacuum pressure (mbar) | Sweep waveform | Scan frequency (Hz) | Scan amplitude (mm) |
| The process area axial deflection is in (3.0～2.2) mm scope | 28～33 | 40～43 | 8.0～10.0 | ≤4.0×10 -4 | Square wave | 50～80 | 0.8～1.2 |
| The process area axial deflection is in (2.2～1.7) mm scope | 21～25 | 26～29 | 8.0～10.0 | ≤4.0×10 -4 | Square wave | 50～80 | 0.8～1.2 |
| The process area axial deflection is in (1.7～1.2) mm scope | 15～20 | 20～22 | 8.0～10.0 | ≤4.0×10 -4 | Square wave | 50～80 | 0.8～1.2 |
| The process area axial deflection is in (1.5～0.5) mm scope | 7～10 | 10～11 | 8.0～10.0 | ≤4.0×10 -4 | Square wave | 50～80 | 0.8～1.2 |
2. school shape program composition
Reach the curvilinear path that on assembly, identifies according to the blisk deformation data and carry out school shape program composition, realize of the segmented linear gradient corresponding control of school shape technological parameter deformed region.
Adopt the definite school shape technological parameter and the program of establishment, blisk is carried out electron beam school shape.
(3) position measurement after the shape of school
Adopt three coordinate measuring machine to carry out position measurement to the blisk after the shape of electron beam school, write down, analyzed, data see Table 3, digital proof, after adopting electron beam school shape, realized the hot school shape of the blisk that size and positional precision are serious overproof, through measuring, the blisk assembly after the shape of school satisfies finishing requirements fully.
Record before and after the shape of table 3 blisk school
| Sequence number | Before the shape of school | After the shape of school | Correcting value | Theoretical value | Correction-theory |
| 1 | 55.60 | 56.30 | 0.70 | 53.70 | 2.60 |
| 2 | 54.96 | 55.52 | 0.56 | 53.70 | 1.82 |
| 3 | 55.40 | 55.80 | 0.40 | 53.70 | 2.10 |
| 4 | 55.80 | 55.96 | 0.16 | 53.70 | 2.26 |
| 5 | 55.58 | 55.66 | 0.08 | 53.70 | 1.96 |
| 6 | 56.20 | 56.12 | -0.08 | 53.70 | 2.42 |
| 7 | 55.80 | 55.66 | -0.14 | 53.70 | 1.96 |
| 8 | 55.90 | 55.50 | -0.40 | 53.70 | 1.80 |
| 9 | 55.80 | 55.34 | -0.46 | 53.70 | 1.64 |
| 10 | 55.90 | 55.26 | -0.64 | 53.70 | 1.56 |
| 11 | 55.90 | 55.26 | -0.64 | 53.70 | 1.56 |
| 12 | 55.90 | 55.40 | 0.50 | 53.70 | 1.70 |
| 13 | 55.48 | 55.08 | -0.40 | 53.70 | 1.38 |
| 14 | 55.46 | 55.20 | -0.26 | 53.70 | 1.50 |
| 15 | 55.30 | 55.24 | -0.06 | 53.70 | 1.54 |
| 16 | 55.50 | 55.50 | 0 | 53.70 | 1.80 |
| 17 | 54.94 | 55.10 | 0.16 | 53.70 | 1.40 |
| 18 | 55.20 | 55.6 | 0.40 | 53.70 | 1.90 |
| 19 | 55.46 | 55.92 | 0.46 | 53.70 | 2.22 |
| 20 | 55.48 | 55.94 | 0.46 | 53.70 | 2.24 |
| 21 | 55.70 | 56.10 | 0.40 | 53.70 | 2.40 |
| 22 | 55.48 | 56.00 | 0.52 | 53.70 | 2.30 |
| 23 | 56.02 | 56.36 | 0.34 | 53.70 | 2.66 |
| 24 | 56.24 | 56.34 | 0.10 | 53.70 | 2.64 |
| 25 | 56.26 | 56.32 | 0.06 | 53.70 | 2.62 |
| 26 | 56.46 | 56.44 | -0.02 | 53.70 | 2.74 |
| 27 | 56.18 | 55.94 | -0.24 | 53.70 | 2.24 |
| 28 | 57.04 | 56.76 | -0.28 | 53.70 | 3.06 |
| 29 | 57.16 | 56.82 | -0.34 | 53.70 | 3.12 |
| 30 | 56.48 | 56.12 | -0.36 | 53.70 | 2.42 |
| 31 | 56.22 | 55.80 | -0.42 | 53.70 | 2.10 |
| 32 | 56.26 | 55.90 | -0.36 | 53.70 | 2.20 |
| 33 | 55.60 | 55.26 | -0.34 | 53.70 | 1.56 |
| 34 | 55.90 | 55.56 | -0.34 | 53.70 | 1.86 |
| 35 | 55.66 | 55.36 | -0.30 | 53.70 | 1.66 |
| 36 | 55.86 | 55.68 | -0.18 | 53.70 | 1.98 |
| 37 | 55.92 | 55.82 | -0.10 | 53.70 | 2.12 |
| 38 | 55.58 | 55.80 | 0.22 | 53.70 | 2.10 |
| 39 | 55.70 | 56.12 | 0.42 | 53.70 | 2.42 |
| 40 | 55.70 | 56.40 | 0.70 | 53.70 | 2.70 |
| 41 | 55.68 | 56.54 | 0.86 | 53.70 | 2.84 |
(4) heat treatment that eliminates stress
To deflection blisk in control range, the heat treatment that eliminates stress, system is: 750 ℃, 2.0h, cools off with stove by 500 ℃.
After the serious overproof welded type blisk assembly of size and positional precision adopted electron beam to carry out hot school shape, every size and positional precision satisfied finishing requirements fully, and every performance indications meet related request, and it is qualified that this blisk assembly has now been processed.
Claims (1)
1, a kind of method of utilizing electron beam to the hot school of welded type blisk shape is characterized in that carrying out according to the following steps:
(1) prepares before the weldering
According to the leaf dish assembly deformation data table of measuring, the position of need school shape is measured and indicated at the end at weld seam reverse side lock, surveying record according to deformable blade, by data variation characteristic, blisk is carried out regionality to indicate, clear up the leaf dish then, adopt assembled tool, the blisk assembling is reached school shape requirement;
(2) electron beam school shape
Carry out school shape selection of process parameters and determine that the formal welding parameter of blisk assembly is: high pressure is 150KV according to the blisk deformation data, speed of welding is 8.0～10mm/s, square wave, scan frequency is 50～80Hz, and scan amplitude is 0.8～1.2mm, and welding current is 40～43mA;
1. blisk assembly electron beam school shape parameter
According to the scope of deflection, the input of control beam energy, other parameter constant is only adjusted welding current, determines the scope of fusion penetration, and deflection is at 0.5～3.0mm, and the energy of electron beam is 1/4～1 times a formal welding line, and fusion penetration is controlled at 7～33mm;
2. electron beam school shape program composition
Reach the deformed region that on assembly, identifies according to the blisk deformation data and carry out the shape program composition of electron beam school, realize of the correspondence control of electron beam school shape parameter deformed region;
(3) position measurement after the shape of school
Blisk after the shape of electron beam school is carried out position measurement, record in addition, and compare, analyze;
(4) heat treatment that eliminates stress
To deflection blisk in control range, heat treatment eliminates stress.
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| CN101706245B (en) * | 2009-11-06 | 2011-06-22 | 无锡透平叶片有限公司 | Method for detecting welding deformation amount of vane |
| CN102837160A (en) * | 2012-08-23 | 2012-12-26 | 沈阳黎明航空发动机(集团)有限责任公司 | Assembling precision control method of single-body blades in blisk of electron beam welding structure |
| CN103706938A (en) * | 2013-12-11 | 2014-04-09 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam welding method and system using multiple heat sources to control residual stress |
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| CN103706938B (en) * | 2013-12-11 | 2015-10-21 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of method and system utilizing multi-heat source to control the electron beam welding of residual stress |
| CN103706938A (en) * | 2013-12-11 | 2014-04-09 | 中国航空工业集团公司北京航空制造工程研究所 | Electron beam welding method and system using multiple heat sources to control residual stress |
| CN103753099B (en) * | 2014-01-03 | 2016-04-20 | 西安航天动力机械厂 | A kind of device for thin-wall titanium alloy part hot school shape |
| CN103753099A (en) * | 2014-01-03 | 2014-04-30 | 西安航天动力机械厂 | Device for heat shaping of thin-walled titanium alloy parts |
| CN105562919A (en) * | 2014-10-13 | 2016-05-11 | 沈阳黎明航空发动机(集团)有限责任公司 | Control method for electron beam welding splash of part with narrow lock bottom structure |
| CN104475960A (en) * | 2014-10-30 | 2015-04-01 | 中国科学院金属研究所 | Ferronickel-based alloy welding joint heat-affected zone grain boundary liquation crack control method |
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| CN109332425A (en) * | 2018-09-17 | 2019-02-15 | 中车大连机车车辆有限公司 | Distortion correcting method |
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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |