CN104568948A - Micropore shot blasting process testing method - Google Patents
Micropore shot blasting process testing method Download PDFInfo
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- CN104568948A CN104568948A CN201410548303.7A CN201410548303A CN104568948A CN 104568948 A CN104568948 A CN 104568948A CN 201410548303 A CN201410548303 A CN 201410548303A CN 104568948 A CN104568948 A CN 104568948A
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Abstract
The invention provides a method for testing micropore shot blasting, which is used for solving the problem of test after a micropore part of a shot-blast component is under shot blasting. The method comprises the steps of mainly testing the shot-blasting strength and a coverage rate, wherein for the shot-blasting strength of the micropore part, carrying out the shot-blasting reinforcement by utilizing a concealed test piece to simulate a micropore structure, and calculating the shot-blasting strength of the micropore by virtue of a curve; and examining the micropore shot-blasting effect by utilizing a magnifying lens and a borescope for the coverage rate of the micropore part. By adopting the method, the shot-blasting coverage rate and the shot-blasting strength of the micropore part can be effectively tested; moreover, the process is simple and easy to control.
Description
Technical field
The invention belongs to shot peening strengthening inspection during manufacture field, the method for a kind of metal parts aperture position shot-peening inspection is provided especially.
Background technology
Shot blast also claims shot peening strengthening, is to reduce part fatigue, improves one of the effective ways in life-span, its equipment is simple, with low cost, not by workpiece shapes and position limitation, easy to operate, be widely used in and improve part machinery intensity and wearing quality, antifatigue and corrosion resistance etc.
Require very strict to engine part aperture position shot-peening both at home and abroad, inspection for aperture position is stricter, traditional small hole shot-peening part shot peening strengthening inspection is whether the projectile impact hole of lens examination part shot peening coverage by using at least 10 times under the light of enough brightness covers completely, but is a difficult problem for the inspection of metal parts aperture position shot peening strength.
Summary of the invention
In order to the problem checked after solving existing shot-peening part aperture position shot-peening, the invention provides the method for small hole shot-peening inspection, the method effectively can check aperture position shot-peening coverage rate and shot peening strength, and technique is simple, is easy to grasp.
Two indexs of small hole shot-peening method of inspection main test shot peening strength provided by the invention and coverage rate, wherein, shot peening strength is by test piece shot-peening simulation part small hole shot-peening process, small hole shot-peening ruggedness test adopts simulation small structure shot-peening to cover the process that shot-peening is carried out in test piece, shot peening strength by designing requirement is converted into the shot peening strength of little maskaperture mask test piece, specific as follows:
(1), inspection small hole shot-peening intensity: use is covered test piece simulation small structure and carried out shot peening strengthening, and calculates the shot peening strength of aperture by intensity conversion method;
Wherein the process of intensity conversion method is:
1., get two groups of test pieces, wherein one group is the test piece of all standing A type, and do not cover during shot-peening, another group covers N-type test piece, covers during shot-peening, only has outside being locally exposed to;
2., shot-peening: respectively test piece is covered to all standing A type test piece and N-type and carry out shot-peening under identical shot-peening Parameter Conditions, both records camber value;
3., change several groups of shot-peening parameters, repeat step 2.;
4. camber value curve map, is made, using the camber value of all standing A type test piece as horizontal ordinate, cover the camber value of N-type test piece as ordinate, in coordinate, a point is determined by the camber value that both obtain under identical shot-peening condition, the point that all two kinds of camber values are determined jointly is linked to be line, wherein, the camber value of all standing A type test piece of designing requirement to be included in a little formed scope;
5., in camber value curve map, find out the camber value region of all standing A type test piece of designing requirement, ordinate corresponding to this region is that N-type covers test piece camber value scope;
6., using the test piece of reflection nozzle shot-peening maskaperture mask N-type, draw shot-peening saturation curve, is qualified when within the scope of the maskaperture mask N-type test piece saturation point camber value of covering N-type test piece after conversion;
(2), inspection small hole shot-peening coverage rate: use magnifier to go deep in hole in conjunction with borescope, hint obliquely at the internal surface of hole state of amplification at display screen, thus check out aperture position coverage rate shot blasting effect.
Small hole shot-peening process test method of the present invention, is characterized in that, the detailed process of described inspection shot-peening coverage rate is:
Step one, use magnifier and boresoope inspection are wanted in the hole in piece part of shot-peening;
Step 2, position, shot-peening hole, is divided into 10 seconds the shot-peening time, 20 seconds, 30 seconds, 60 seconds once, the accumulation shot-peening time;
Use magnifier to go deep into endoporus inspection hole inside surface shot-peening coverage rate until reach all standing position in conjunction with borescope after step 3, each shot-peening, the shot-peening time of the shot-peening aperture now accumulated is the time parameter of part small hole shot-peening.
Small hole shot-peening process test method of the present invention, is characterized in that: make camber value curve map time, minimum in coordinate, determine 4 points after will be linked to be line a little again.
Adopt the small hole shot-peening method of inspection of the present invention, the stress due to part aperture position can be avoided to concentrate the fatigue break fault of generation, thus improve the engine part life-span.
Accompanying drawing explanation
Fig. 1 all standing A type test piece schematic diagram.
Fig. 2 covers N-type test piece (i.e. local shot-peening test piece) schematic diagram.
N-type test piece camber value curve map is covered in Fig. 3 all standing A type test piece conversion.
Fig. 4 tri-kinds of test piece shot-peening schematic diagram (wherein a, the test piece of all standing A type, b, cover N-type test piece, c, the test piece of maskaperture mask N-type).
Fig. 5 maskaperture mask test piece saturation curve.
Fig. 6 hole in piece part shot-peening schematic diagram.
Embodiment
Embodiment 1
The diameter of part aperture to be measured is Φ 10mm, and the given small hole shot-peening intensity of designing requirement is 0.10 ~ 0.15mmA, and small hole shot-peening adopts the lance rifle nozzle shot-peening of Φ 8.
Inspection small hole shot-peening intensity:
1., get two groups of test pieces, wherein one group is all standing A type test piece (Fig. 1), does not cover during shot-peening, another group covers N-type test piece (Fig. 2), test piece only reserves the wide region of middle 10mm, and remainder covers up, and only carries out shot blast to reserving part;
2., shot-peening: respectively test piece is covered to all standing A type test piece and N-type and carry out shot-peening under identical shot-peening Parameter Conditions, both records camber value;
3., change several groups of shot-peening parameters, repeat step 2.;
4. camber value curve map, is made, using the camber value of all standing A type test piece as horizontal ordinate, cover the camber value of N-type test piece as ordinate, in coordinate, a point is determined by the camber value that both obtain under identical shot-peening condition, the point that all two kinds of camber values are determined jointly is linked to be line (Fig. 3), wherein, all standing A type test piece of designing requirement shot peening strength for 0.10 ~ 0.15mmA camber value be included in a little formed scope;
5. in camber value curve map, find out the camber value region (0.10 ~ 0.15mmA) of all standing A type test piece of designing requirement, ordinate corresponding to this region is 0.20 ~ 0.24mmN, this scope for after conversion N-type cover test piece shot peening strength scope.
6., use the test piece of reflection nozzle shot-peening maskaperture mask N-type, draw shot-peening saturation curve, see Fig. 5, when maskaperture mask N-type test piece saturation point after conversion cover (0.20 ~ 0.24mmN) within the scope of the camber value of N-type test piece time be qualified;
Hole shot-peening saturation curve examples of parameters:
Inspection shot-peening coverage rate:
Step one, use magnifier and boresoope inspection are wanted in the hole in piece part of shot-peening, and its machine adds surface does not have obvious defect;
Step 2, position, shot-peening hole, see Fig. 6, is divided into 10 seconds the shot-peening time, 20 seconds, 30 seconds, 60 seconds once, the accumulation shot-peening time;
Use magnifier to go deep into endoporus inspection hole inside surface shot-peening coverage rate until reach all standing position in conjunction with borescope after step 3, each shot-peening, the shot-peening time of the shot-peening aperture now accumulated is the time parameter of part small hole shot-peening.
This shot-peening process is applicable to the process needing the shot-peening parts with small hole first batch of initial workpiece determination shot-peening part time.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (3)
1. a small hole shot-peening process test method, for checking shot peening strength and coverage rate, is characterized in that, specific as follows:
(1), inspection small hole shot-peening intensity: use is covered test piece simulation small structure and carried out shot peening strengthening, and calculates the shot peening strength of aperture by intensity conversion method;
Wherein the process of intensity conversion method is:
1., get two groups of test pieces, wherein one group is the test piece of all standing A type, and do not cover during shot-peening, another group covers N-type test piece, covers during shot-peening, only has outside being locally exposed to;
2., shot-peening: respectively test piece is covered to all standing A type test piece and N-type and carry out shot-peening under identical shot-peening Parameter Conditions, both records camber value;
3., change several groups of shot-peening parameters, repeat step 2.;
4. camber value curve map, is made, using the camber value of all standing A type test piece as horizontal ordinate, cover the camber value of N-type test piece as ordinate, in coordinate, a point is determined by the camber value that both obtain under identical shot-peening condition, all points determined are linked to be line, wherein, the camber value of all standing A type test piece of designing requirement to be included in a little formed scope;
5., in camber value curve map, find out the camber value region of all standing A type test piece of designing requirement, ordinate corresponding to this region is that N-type covers test piece camber value scope;
6., using the test piece of reflection nozzle shot-peening maskaperture mask N-type, draw shot-peening saturation curve, is qualified when within the scope of the maskaperture mask N-type test piece saturation point camber value of covering N-type test piece after conversion;
(2), inspection small hole shot-peening coverage rate: use magnifier to go deep in hole in conjunction with borescope, hint obliquely at the internal surface of hole state of amplification at display screen, thus check out aperture position coverage rate shot blasting effect.
2. according to small hole shot-peening process test method described in claim 1, it is characterized in that, the detailed process of described inspection shot-peening coverage rate is:
Step one, use magnifier and boresoope inspection are wanted in the hole in piece part of shot-peening;
Step 2, position, shot-peening hole, is divided into 10 seconds the shot-peening time, 20 seconds, 30 seconds, 60 seconds once, the accumulation shot-peening time;
Use magnifier to go deep into endoporus inspection hole inside surface shot-peening coverage rate until reach all standing position in conjunction with borescope after step 3, each shot-peening, the shot-peening time of the shot-peening aperture now accumulated is the time parameter of part small hole shot-peening.
3., according to small hole shot-peening process test method described in claim 1, it is characterized in that: make camber value curve map time, minimum in coordinate, determine 4 points after will be linked to be line a little again.
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Cited By (4)
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| CN106018435A (en) * | 2016-08-08 | 2016-10-12 | 无锡宇宁智能科技有限公司 | Device for detecting appearance of SMT mounted product |
| CN110476052A (en) * | 2017-04-05 | 2019-11-19 | 赛峰集团 | The method that coverage for the metal parts to the processing for living through change component surface roughness is determined |
| CN112198158A (en) * | 2020-11-02 | 2021-01-08 | 扬州智能视觉研究所 | Shot blasting coverage rate detection device and method based on machine vision |
| CN116929255A (en) * | 2023-07-24 | 2023-10-24 | 安徽星瑞齿轮传动有限公司 | Gear surface strong polishing coverage rate measurement process method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106018435A (en) * | 2016-08-08 | 2016-10-12 | 无锡宇宁智能科技有限公司 | Device for detecting appearance of SMT mounted product |
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| CN112198158A (en) * | 2020-11-02 | 2021-01-08 | 扬州智能视觉研究所 | Shot blasting coverage rate detection device and method based on machine vision |
| CN112198158B (en) * | 2020-11-02 | 2022-04-22 | 扬州智能视觉研究所 | Shot blasting coverage rate detection device and method based on machine vision |
| CN116929255A (en) * | 2023-07-24 | 2023-10-24 | 安徽星瑞齿轮传动有限公司 | Gear surface strong polishing coverage rate measurement process method |
| CN116929255B (en) * | 2023-07-24 | 2024-04-16 | 安徽星瑞齿轮传动有限公司 | Gear surface strong polishing coverage rate measurement process 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 |
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