CN108818324A - A kind of shot-blast unit and composite strengthening method of thin-walled wheel disc - Google Patents
A kind of shot-blast unit and composite strengthening method of thin-walled wheel disc Download PDFInfo
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- CN108818324A CN108818324A CN201810754114.3A CN201810754114A CN108818324A CN 108818324 A CN108818324 A CN 108818324A CN 201810754114 A CN201810754114 A CN 201810754114A CN 108818324 A CN108818324 A CN 108818324A
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- main shaft
- peening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C3/00—Abrasive blasting machines or devices; Plants
- B24C3/02—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other
- B24C3/04—Abrasive blasting machines or devices; Plants characterised by the arrangement of the component assemblies with respect to each other stationary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C9/00—Appurtenances of abrasive blasting machines or devices, e.g. working chambers, arrangements for handling used abrasive material
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- Application Of Or Painting With Fluid Materials (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention belongs to piece surface processing techniques, are related to the shot-blast unit and composite strengthening method of a kind of thin-walled wheel disc suitable for aero-engine.Shot-blast unit of the invention includes pedestal, right support, left support, main shaft, transmission system, driving motor and wedge nail, the lower end of right support and left support is welded on pedestal, the upper end of right support and the right end of main shaft are linked together by bearing, the upper end of left support and the left end of main shaft are linked together by bearing, the inner ring of main shaft and bearing interference fit, and it is detachable；The upper end of transmission system is connect with main shaft, and transmission system lower end is connect with driving motor, and driving motor rotates main shaft along main-shaft axis by transmission system.By wheel disc, by cradle hangs, wheel disc is rotated with main shaft the present invention in the sky in the sky, is conducive to increase spray gun pose adjustment range, to increase spray angle range of choice, is conducive to the shot-peening accessibility for improving the interference such as tenon tooth position；It is particularly advantageous to reduce diskware deformation.
Description
Technical field
The invention belongs to piece surface processing techniques, are related to a kind of shot-peening dress of thin-walled wheel disc suitable for aero-engine
It sets and composite strengthening method.
Background technique
The thin-walled wheel disc Service Environment very severe of aero-engine, it is multifactor common by high stress, high speed, high temperature etc.
Effect, because the risk of structure and the generation fatigue failure of surface stress concentration effect is higher.Shot-peening is that a kind of raising thin-walled wheel disc is tired
The effective ways of labor performance make material surface repeated elastoplasticity using the projectile impact material surface of a large amount of high-speed motions
Deformation, forms the build up layer and residual compressive stress layer of certain depth, so that the one kind for improving material entirety fatigue behaviour adds
Work method.Due to antifatigue significant effect, shot-blast process is widely used in aero-engine thin-walled wheel disc both at home and abroad at present
In processing and manufacturing.
Thin-walled wheel disc refers generally to the wheel disc that disc minimum thickness is no more than 15mm, since structural rigidity is lower, machining accuracy
It is required that it is high, there is a problem of that molding surface size control difficulty is big.There are three aspects for tradition thin-walled wheel disc shot-blast process method at present
It is insufficient：1) technique is single, fail to be existed according to the structural strength of thin-walled wheel disc different parts using different technological parameters in order to
The problem of control deforms and sacrifices fatigue behaviour, causes to fail to give full play to shot-peening effect；2) thin-walled wheel disc ruler after shot-peening
It is very little overproof, since conventional method is by the way of wheel disc two sides successively shot-peening, cause wheel disc deformation serious；3) after shot-peening tongue-and-groove and
The surface roughness of core is too big, causes the local surfaces factor of stress concentration significant, and there are higher high weeks and low-cycle fatigue to lose
Imitate risk.
Summary of the invention
The purpose of the present invention is：A kind of shot-blast unit and composite strengthening method suitable for aero-engine thin-walled wheel disc,
To reduce shot-peening deformation, surface roughness value is reduced, shot-peening effect is improved, meets drawing requirement.
The technical scheme is that：
The shot-blast unit of thin-walled wheel disc includes pedestal, right support, left support, main shaft, transmission system, driving motor and wedge
The lower end of nail, right support and left support is welded on pedestal, and the upper end of right support and the right end of main shaft are connected to one by bearing
It rises, the upper end of left support and the left end of main shaft are linked together by bearing, the inner ring interference fit of main shaft and bearing, and removable
It unloads；The upper end of transmission system is connect with main shaft, and transmission system lower end is connect with driving motor, and driving motor is made by transmission system
Main shaft is rotated along main-shaft axis.
The method and step for carrying out complex intensifying using the shot-blast unit of the thin-walled wheel disc is as follows：
(1), thin-walled wheel disc clamping：
Thin-walled wheel disc is mounted on to the middle position of main shaft, then main shaft is mounted on right support and left support, makes thin-walled
Wheel disc is identical at a distance from left support and right support；The arranged on left and right sides in the gap between thin-walled wheel disc and main shaft is symmetrical respectively
It is inserted into two wedge nails；Driving motor is connected by transmission system with main shaft；
(2), composite shot blasting reinforcement：
(2.1), left spray gun and right spray gun are symmetrically disposed to the left side and the right side of thin-walled wheel disc, it is ensured that left spray gun and thin-walled
The distance on the left side of wheel disc is consistent at a distance from the right side of right spray gun and thin-walled wheel disc, is 50mm~500mm；
(2.2), driving motor is opened, main shaft is made to drive the rotation of thin-walled wheel disc, revolving speed is 0.1rpm~10rpm.
(2.3), compressed air shotblasting machine, left spray gun and right spray gun while shot blasting are opened, first time spray first is carried out to thin-walled wheel disc
The sequencing of ball, shot-peening position is：Core, disc, the switching angle R and tongue-and-groove, technological parameter are as follows：
The shot-blast process parameter of core is：Bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, and shot-peening is strong
Degree is 0.15mmA~0.35mmA, and accumulation coverage rate is 100%~200%.
The shot-blast process parameter of disc is：If disc minimum thickness be no more than 2mm, bullet diameter be 0.1mm~
0.3mm, spray angle are 70 °~90 °, and shot peening strength is 0.01mmA~0.10mmA, and accumulation coverage rate is 100%~200%；
If disc minimum thickness is greater than 2mm and is less than 6mm, bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, spray
Ball intensity is 0.03mmA~0.15mmA, and accumulation coverage rate is 100%~200%；If disc minimum thickness is more than or equal to 6mm,
Then bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, and shot peening strength is 0.15mmA~0.25mmA, and accumulation is covered
Lid rate is 100%~200%；
Switching the angle R shot-blast process parameter be：Bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, spray
Ball intensity is 0.15mmA~0.25mmA, and accumulation coverage rate is 100%~200%；
The shot-blast process parameter of tongue-and-groove is：Bullet diameter is 0.3mm~0.6mm, and spray angle is 45 °~60 °, and shot-peening is strong
Degree is 0.10mmA~0.30mmA, and accumulation coverage rate is 100%~200%；
Second of shot-peening is carried out after adjusting parameter again, the sequencing at shot-peening position is：Core, disc, the switching angle R and tenon
Slot, technological parameter are as follows：
The shot-blast process parameter of core is：Bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, and shot-peening is strong
Degree is 0.03mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
The shot-blast process parameter of disc is：If disc minimum thickness is less than 6mm, without second of shot-peening；If disc
Minimum thickness is more than or equal to 6mm, then bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, and shot peening strength is
0.05mmA~0.10mmA, accumulation coverage rate are 200%~400%；
Switching the angle R (102) shot-blast process parameter be：Bullet diameter be 0.1mm~0.3mm, spray angle be 70 °~
90 °, shot peening strength is 0.05mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
The shot-blast process parameter of tongue-and-groove is：Bullet diameter is 0.1mm~0.3mm, and spray angle is 45 °~60 °, and shot-peening is strong
Degree is 0.03mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
(2.4), after to be peened, compressed air shotblasting machine is closed, driving motor is closed, removes thin-walled wheel disc.
The diameter of the main shaft is smaller than the diameter of the centre bore of thin-walled wheel disc by 1%~12%；The material of wedge nail is resin
Or plastics, the 50%~90% of gap d of the minimum thickness h between main shaft and the centre bore of thin-walled wheel disc, based on maximum gauge H
1.5 times of gap d between axis and the centre bore of thin-walled wheel disc~2.0 times.
The present invention has the advantage that is with beneficial effect
1) wheel disc is passed through into cradle hangs in the sky, is on the one hand conducive to carry out shot-peening to pressure spray process using two-sided, thus
Reduce wheel disc axial deformation；On the other hand, wheel disc is rotated with main shaft in the sky, is conducive to increase spray gun pose adjustment range, from
And increase spray angle range of choice, be conducive to the shot-peening accessibility for improving the interference such as tenon tooth position；
2) fixed wheel disc is followed closely using wedge, compared to pin fixed form is used, wedge nail mode, which can reduce, does core shot-peening
It relates to, is conducive to improve shot-peening accessibility；
3) composite shot blasting method is used, the shot peening strength of second of shot-peening is less than the shot peening strength of first time shot-peening, favorably
In reducing surface roughness value, reduces surface stress raisers, give full play to shot-peening effect；
4) it is directed to thin-walled wheel disc, using the shot-peening sequence of core, disc, the switching angle R and tongue-and-groove, is conducive to reduce diskware change
Shape；
5) when disc position, minimum thickness is too small (being less than 6mm), for Reducing distortion, only with a shot-peening.This hair
Bright composite strengthening method tests proof by contrast, and shot-peening effect improves 50% or more, and surface roughness reduces by 15%
More than, tongue-and-groove tenon tooth roller size and disc critical size meet drawing requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shot-blast unit of the present invention.
Fig. 2 is the structural schematic diagram of the wedge nail of shot-blast unit of the present invention.
Specific embodiment
The present invention is described in further details below.Referring to Fig. 1,2, a kind of shot-blast unit of thin-walled wheel disc, feature
It is：It includes pedestal 2, right support 3, left support 8, main shaft 4, transmission system 5, driving motor 6 and wedge nail 7.Pedestal 2, right branch
Frame 3 and left support 8 are welded as entirety, left branch by the way that a bracket, the lower end of right support 3 and the upper surface of pedestal 2 is formed by welding
The lower end of frame 8 and the upper surface of pedestal 2 are welded as entirety；The upper end of right support 3 and the right end of main shaft 4 are connected to one by bearing
It rises, the upper end of left support 8 and the left end of main shaft 4 are linked together by bearing, and the inner ring of main shaft 4 and bearing is interference fitted, and
Detachably；The upper end of transmission system 5 is connect with the right end of main shaft 4, and 5 lower end of transmission system is connect with driving motor 6, driving motor
6 rotate main shaft 4 along axis by transmission system 5.
The step of method of complex intensifying, is as follows：
1, thin-walled wheel disc clamping：
The left end of main shaft 4 is sequentially passed through into right support 3, the centre bore of thin-walled wheel disc 1 and left support 8 from right to left, is made thin
Wall wheel disc (1) is located at the center of left support and right support, identical at a distance from left support and right support；Respectively in thin-walled wheel disc 1
Arranged on left and right sides be symmetrically inserted into two wedges nail 7；By the top and bottom of transmission system 5 respectively with 6 phase of main shaft 4 and driving motor
Even.
2, composite shot blasting reinforcement：
2.1, left spray gun and right spray gun are symmetrically disposed to the left side and the right side of thin-walled wheel disc 1, it is ensured that left spray gun and thin-walled
The distance on the left side of wheel disc 1 is consistent at a distance from the right side of right spray gun and thin-walled wheel disc 1, is 50mm~500mm.
2.2, driving motor is opened, makes main shaft 4 that thin-walled wheel disc 1 be driven to rotate, revolving speed is 0.1rpm~10rpm.
2.3, compressed air shotblasting machine, left spray gun and right spray gun while shot blasting are opened, first time spray first is carried out to thin-walled wheel disc 1
The sequencing of ball, shot-peening position is：Core 104, disc 103, the switching angle R 102 and tongue-and-groove 101；It is carried out again after adjusting parameter
The sequencing of second of shot-peening, shot-peening position is：Core 104, disc 103, the switching angle R 102 and tongue-and-groove 101；Wherein, twice
The bullet diameter of shot-peening, spray angle, shot peening strength and accumulation coverage rate are as shown in table 1 below：
1 composite shot blasting technological parameter of table
2.4, after to be peened, compressed air shotblasting machine is closed, driving motor 6 is closed, removes thin-walled wheel disc 1.
The diameter of the main shaft 4 of shot-blast unit is smaller than the diameter of the centre bore of thin-walled wheel disc 1 by 1%~12%；The material of wedge nail 7
For resin or plastics, the 50%~90% of gap d of the minimum thickness h between main shaft 4 and the centre bore of thin-walled wheel disc 1, it is maximum
1.5 times of gap d of the thickness H between main shaft 4 and the centre bore of thin-walled wheel disc 1~2.0 times.
The working principle of the invention is：Thin-walled wheel disc is fixed and suspended by shot-blast unit, simultaneously using two spray guns
Shot peening strengthening is carried out to the two sides of thin-walled wheel disc, the homogeneous surfaces residual pressure of the amplitudes and same depth such as the generation of wheel disc two sides can be made
Stress field, to reduce the deformation that the structures such as shot-peening rear trochal disc disc and tongue-and-groove are generated by the difference of surface residual stress field；
Thin-walled spider suspension to be painted in bracket main shaft central location, is made wheel disc rotation using bearing-transmission by the shot-blast unit, it can be ensured that
Wheel disc is uniform by spray；Left and right bracket is to spray gun without interference, it is ensured that spray gun has abundant mobile space and biggish jet angle
Range is spent, eurytopicity and the safety of technique are improved；In addition, the design followed closely using wedge, can both fix wheel disc, tradition also can avoid
The fixture of method is to the masking phenomenon of core shot peening coverage, to improve shot-peening efficiency and quality.
In addition, for composite strengthening method, first using large scale bullet and big or medium) shot peening strength adds wheel disc
Work can make disc material surface generate deeper residual compressive stress field and working hardening layer, to be conducive to inhibit fatigue crack
Extension；Small size bullet and small shot peening strength are used again, can be reduced surface roughness value, also be can further improve surface residual pressure
Stress value, to be conducive to inhibit fatigue crack initiation.By above-mentioned secondary shot peening strengthening, thin-walled wheel disc entirety is significantly improved
Fatigue resistance prolongs the service life.
Embodiment 1
Used transmission system 5 and driving motor 6 are goods shelf products, and thin-walled wheel disc disc minimum thickness is 2.5mm.
Shot-blast unit includes pedestal 2, right support 3, left support 8, and main shaft 4, transmission system 5, driving motor 6 and wedge follow closely 7.Bottom
Seat 2, right support 3 and left support 8 are welded as whole by the way that a bracket, the lower end of right support 3 and the upper surface of pedestal 2 is formed by welding
Body, the lower end of left support 8 and the upper surface of pedestal 2 are welded as entirety；The upper end of right support 3 and the right end of main shaft 4 pass through bearing
It links together, the upper end of left support 8 and the left end of main shaft 4 are linked together by bearing, the inner ring interference of main shaft 4 and bearing
Cooperation, and it is detachable；The upper end of transmission system 5 is connect with the right end of main shaft 4, and 5 lower end of transmission system is connect with driving motor 6,
Driving motor 6 rotates main shaft 4 along axis by transmission system 5.
The method that the shot-blast unit of thin-walled wheel disc carries out complex intensifying, steps are as follows：
1, thin-walled wheel disc clamping：
1.1, the left end of main shaft 4 is sequentially passed through into right support 3, the centre bore of thin-walled wheel disc 1 and left support 8 from right to left,
Thin-walled wheel disc 1 is set to be located at the center of left support and right support, it is identical at a distance from left support and right support；Respectively in thin-walled wheel disc
1 arranged on left and right sides is symmetrically inserted into two wedge nails 7；By the top and bottom of transmission system 5 respectively with 6 phase of main shaft 4 and driving motor
Even.
2, composite shot blasting reinforcement：
2.1, left spray gun and right spray gun are symmetrically disposed to the left side and the right side of thin-walled wheel disc 1, it is ensured that left spray gun and thin-walled
The distance on the left side of wheel disc 1 is consistent at a distance from the right side of right spray gun and thin-walled wheel disc 1, is 100mm.
2.2, driving motor is opened, makes main shaft 4 that thin-walled wheel disc 1 be driven to rotate, revolving speed 1rpm.
2.3, compressed air shotblasting machine, left spray gun and right spray gun while shot blasting are opened, first time spray first is carried out to thin-walled wheel disc 1
The sequencing of ball, shot-peening position is：Core 104, disc 103, the switching angle R 102 and tongue-and-groove 101；It is carried out again after adjusting parameter
The sequencing of second of shot-peening, shot-peening position is：Core 104, disc 103, the switching angle R 102 and tongue-and-groove 101；Wherein, twice
The bullet diameter of shot-peening, spray angle, shot peening strength and accumulation coverage rate are as shown in table 1 below：
1 composite shot blasting technological parameter of table
2.4, after to be peened, compressed air shotblasting machine is closed, driving motor 6 is closed, removes thin-walled wheel disc 1.
The diameter of the main shaft 4 of shot-blast unit is smaller than the diameter of the centre bore of thin-walled wheel disc 1 by 5%；The material of wedge nail 7 is resin
Or plastics, the 70% of gap d of the minimum thickness h between main shaft 4 and the centre bore of thin-walled wheel disc 1, maximum gauge H is main shaft 4
1.8 times of gap d between the centre bore of thin-walled wheel disc 1.
Embodiment 2
Thin-walled wheel disc disc minimum thickness is 10mm.
1 composite shot blasting technological parameter of table
Claims (3)
1. a kind of shot-blast unit of thin-walled wheel disc, it is characterised in that：It includes pedestal (2), right support (3), left support (8), master
The lower end of axis (4), transmission system (5), driving motor (6) and wedge nail (7), right support (3) and left support (8) is welded on pedestal
(2) on, the upper end of right support (3) and the right end of main shaft (4) are linked together by bearing, the upper end of left support (8) and main shaft
(4) left end is linked together by bearing, and the inner ring of main shaft (4) and bearing is interference fitted, and detachable；Transmission system (5)
Upper end connect with main shaft (4), transmission system (5) lower end is connect with driving motor (6), and driving motor (6) passes through transmission system
(5) main shaft (4) is rotated along main-shaft axis.
2. the method for carrying out complex intensifying using the shot-blast unit of thin-walled wheel disc as described in claim 1, which is characterized in that multiple
Closing reinforcing, steps are as follows：
1), thin-walled wheel disc clamping
Thin-walled wheel disc (1) is mounted on to the middle position of main shaft (4), then main shaft (4) is mounted on right support (3) and left support
(8) on, keep thin-walled wheel disc (1) identical at a distance from left support and right support；Respectively between thin-walled wheel disc (1) and main shaft (4)
The arranged on left and right sides in gap be symmetrically inserted into two wedges nail (7)；Driving motor (6) are passed through into transmission system (5) and main shaft (4) phase
Even；
2), composite shot blasting reinforcement
2.1), left spray gun and right spray gun are symmetrically disposed to the left side and the right side of thin-walled wheel disc (1), it is ensured that left spray gun and thin-walled wheel
The distance on the left side of disk (1) is consistent at a distance from the right side of right spray gun and thin-walled wheel disc (1), is 50mm~500mm；
2.2) driving motor, is opened, main shaft (4) is made to drive thin-walled wheel disc (1) rotation, revolving speed is 0.1rpm~10rpm.
2.3) compressed air shotblasting machine, left spray gun and right spray gun while shot blasting, are opened, first time shot-peening first is carried out to thin-walled wheel disc (1),
The sequencing at shot-peening position is：Core (104), disc (103), the switching angle R (102) and tongue-and-groove (101), technological parameter is such as
Under：
The shot-blast process parameter of core (104) is：Bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, shot-peening
Intensity is 0.15mmA~0.35mmA, and accumulation coverage rate is 100%~200%.
The shot-blast process parameter of disc (103) is：If disc minimum thickness be no more than 2mm, bullet diameter be 0.1mm~
0.3mm, spray angle are 70 °~90 °, and shot peening strength is 0.01mmA~0.10mmA, and accumulation coverage rate is 100%~200%；
If disc minimum thickness is greater than 2mm and is less than 6mm, bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, spray
Ball intensity is 0.03mmA~0.15mmA, and accumulation coverage rate is 100%~200%；If disc minimum thickness is more than or equal to 6mm,
Then bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, and shot peening strength is 0.15mmA~0.25mmA, and accumulation is covered
Lid rate is 100%~200%；
Switching the angle R (102) shot-blast process parameter be：Bullet diameter is 0.3mm~0.6mm, and spray angle is 70 °~90 °, spray
Ball intensity is 0.15mmA~0.25mmA, and accumulation coverage rate is 100%~200%；
The shot-blast process parameter of tongue-and-groove (101) is：Bullet diameter is 0.3mm~0.6mm, and spray angle is 45 °~60 °, shot-peening
Intensity is 0.10mmA~0.30mmA, and accumulation coverage rate is 100%~200%；
Second of shot-peening is carried out after adjusting parameter again, the sequencing at shot-peening position is：Core (104), disc (103), switching R
Angle (102) and tongue-and-groove (101), technological parameter is as follows：
The shot-blast process parameter of core (104) is：Bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, shot-peening
Intensity is 0.03mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
The shot-blast process parameter of disc (103) is：If disc minimum thickness is less than 6mm, without second of shot-peening；If disc
Minimum thickness is more than or equal to 6mm, then bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, and shot peening strength is
0.05mmA~0.10mmA, accumulation coverage rate are 200%~400%；
Switching the angle R (102) shot-blast process parameter be：Bullet diameter is 0.1mm~0.3mm, and spray angle is 70 °~90 °, spray
Ball intensity is 0.05mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
The shot-blast process parameter of tongue-and-groove (101) is：Bullet diameter is 0.1mm~0.3mm, and spray angle is 45 °~60 °, shot-peening
Intensity is 0.03mmA~0.10mmA, and accumulation coverage rate is 200%~400%；
2.4), after to be peened, compressed air shotblasting machine is closed, closes driving motor (6), removes thin-walled wheel disc (1).
3. a kind of shot-blast unit of thin-walled wheel disc according to claim 1, it is characterised in that：The main shaft (4) it is straight
Diameter is smaller by 1%~12% than the diameter of the centre bore of thin-walled wheel disc (1)；The material that wedge follows closely (7) is resin or plastics, minimum thickness h
50%~90% of gap d between main shaft (4) and the centre bore of thin-walled wheel disc (1), maximum gauge H be main shaft (4) with it is thin
1.5 times of gap d between the centre bore of wall wheel disc (1)~2.0 times.
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| CN111958497A (en) * | 2020-09-01 | 2020-11-20 | 江苏大学 | Shot blasting method for hard rock cutter ring of shield tunneling machine |
| CN113246030A (en) * | 2021-05-27 | 2021-08-13 | 无锡航亚科技股份有限公司 | Blade shot blasting method of blisk |
| CN109551376B (en) * | 2018-11-21 | 2021-09-10 | 中国航发哈尔滨东安发动机有限公司 | Method for accurately acquiring shot blasting strength of centrifugal impeller |
| CN115094215A (en) * | 2022-06-24 | 2022-09-23 | 中国航发北京航空材料研究院 | Shot type ultrasonic impact strengthening device for turbine disc mortise and using method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551376B (en) * | 2018-11-21 | 2021-09-10 | 中国航发哈尔滨东安发动机有限公司 | Method for accurately acquiring shot blasting strength of centrifugal impeller |
| CN111451944A (en) * | 2020-05-18 | 2020-07-28 | 东莞立德生物医疗有限公司 | Biomedical degradable magnesium alloy bone nail and preparation method thereof |
| CN111958497A (en) * | 2020-09-01 | 2020-11-20 | 江苏大学 | Shot blasting method for hard rock cutter ring of shield tunneling machine |
| CN113246030A (en) * | 2021-05-27 | 2021-08-13 | 无锡航亚科技股份有限公司 | Blade shot blasting method of blisk |
| CN115094215A (en) * | 2022-06-24 | 2022-09-23 | 中国航发北京航空材料研究院 | Shot type ultrasonic impact strengthening device for turbine disc mortise and using method thereof |
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