CN101530985A - Method for processing composite shot blasting considering both surface peening and polishing - Google Patents
Method for processing composite shot blasting considering both surface peening and polishing Download PDFInfo
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- CN101530985A CN101530985A CN200910048995A CN200910048995A CN101530985A CN 101530985 A CN101530985 A CN 101530985A CN 200910048995 A CN200910048995 A CN 200910048995A CN 200910048995 A CN200910048995 A CN 200910048995A CN 101530985 A CN101530985 A CN 101530985A
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Abstract
The invention relates to a method for processing a composite shot blasting considering both surface peening and polishing. The method comprises the following: a first step, carrying out primary shot blasting on a material to reach saturated shot blasting intensity; carrying out secondary shot blasting based on primary shot blasting; wherein, the saturated shot blasting intensity of secondary shot blasting is about 0.6 time that of the primary shot blasting and shot blasting equipment and used shots are the same as the shot blasting equipment and used shots of the primary shot blasting. The method increases stress of residual pressure on the surface and near surface area without changing the shot blasting equipment and shots, thereby improving the microhardness of the surface and the near surface area, significantly reducing surface roughness of parts, and improving the surface quality of the shot blasting material.
Description
Technical field
What the present invention relates to is a kind of ball blasting method of technical field of surface, specifically, is a kind of composite shot blasting processing method of taking into account surface peening and polishing.
Background technology
The surface shot blasting strengthening technology is the key manufacturing technology that improves component of machine fatigue life and stress corrosion resistance etc.The shot peening strengthening factor comprises two aspects, and promptly residual stress is strengthened and build up.Build up can effectively prevent crack initiation, and the residual stress reinforcement then has the effect that prevents the crackle expansion.Control this two factors, can change the surface property of zero member.Bead causes that the variation of material surface comprises: 1) introduce residual compressive stress field, 2) the deformed microstructure structure optimization, microhardness improves, and 3) the surface roughness change.The optimization of residual compressive stress field and deformed microstructure structure can make material fatigue life and stress corrosion resistance etc. obtain obviously to improve.The increase of surface roughness, then unfavorable to the improvement of its fatigue behaviour.
Find by prior art documents, people such as M.Kobayashi were " international tired magazine (International Journal of Fatigue) " (1998, the 20th volume, the 351-357 page or leaf) " shot-peening residual stress generting machanism (Mechanism of creation of compressive residualstress by shot peening) " paper of delivering on, studied the generting machanism of shot peening strengthening residual compressive stress field, find that the maximum residual stress value appears at time top layer, and the surface compress residual stresses value is less on the contrary.People such as C.A.Rodopoulos were " international tired magazine (International Journal of Fatigue) " (2004, the 26th volume, the 849-856 page or leaf) " optimization one method of the controlled shot-peening fatigue resistance of 2024-T351 aluminium alloy; result and analysis (Optimisation of the fatigue resistance of 2024-T351aluminium alloys by controlled shot peening-methodology; results andanalysis) " paper of delivering on, studied the influence of shot peening strengthening to the metal material surface microhardness, discovery is under single shot-peening condition, and there is certain limit in the raising of shot-peening deformation layer microhardness.And people such as Yang Lei were " Chinese Surface Engineering " (2006, the 19th volume, the 43-46 page or leaf) " analysis of roughness after the pure titanium high energy bead blasted surfaces nanometer " paper of delivering on, studied the influence of shot peening strengthening, found that shot-peening rear surface roughness increases, although roughness value slightly descends along with the prolongation of shot-peening time to the metal material surface roughness, but generally, under the condition of single bead, decline scope is less, and final surface roughness is bigger.Existing shot-peening glossing needs in the polishing process to change bullet for several times, perhaps polishes processing on different compressed air shotblasting machines, the technological operation complexity, and equipment investment is bigger, thereby economic benefit is relatively poor.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of composite shot blasting processing method of taking into account surface peening and polishing is provided, do not needing to change under the prerequisite of bullet, optimizing shot-peening residual stress field and shot-peening institutional framework, obviously reducing the roughness of bead blasted surfaces simultaneously again.
The present invention is achieved by the following technical solutions, comprises the steps:
The first step is carried out shot-peening one time to material.
Material is being carried out shot-peening when reaching the saturated shot peening strength of regulation, residual stress, institutional framework and surface roughness also reach fixed value in the material deformation layer.The present invention adopts saturated shot peening strength, makes shot-peening residual stress field and shot-peening institutional framework reach the engineering discipline requirement.Because a bead blasted surfaces residual compressive stress is still less than inferior top layer residual compressive stress, and, easily cause surface roughness higher because shot peening strength is bigger.
In second step, on the basis of a shot-peening, material is carried out the secondary shot-peening.By adjusting the saturated shot peening strength that air pressure reduces the secondary shot-peening, be about 0.6 of saturated shot peening strength once.
In order to improve the quality that shows of material, on a shot-peening basis, carry out the secondary bead, the secondary shot-peening does not have too much influence to residual stress field and institutional framework whole in the shot-peening deformation layer, but surface compress residual stresses and institutional framework further improve and optimize, surface residual stress obtains homogenizing, and surface microhardness further improves.In addition, because the secondary shot-peening has the effect of polishing, significantly reduced the bead blasted surfaces roughness.
Secondary shot peening strength low excessively (less than 0.6 times of saturated shot peening strength once) do not reach the effect of optimizing surface residual stress and institutional framework, and the secondary shot peening strength is too high, and the surface roughness of shot-peening material is reduced.
The invention has the beneficial effects as follows: the composite shot blasting processing method of taking into account surface peening and polishing that is provided, on the basis of a shot peening strengthening, carry out the lower secondary bead of shot peening strength, promptly consolidate and optimized shot-peening effect, improved the surface quality of shot-peening material again, surface compress residual stresses and microhardness have improved more than 10% and 5% than a shot-peening respectively, and surface roughness has reduced more than 22%.In addition, the secondary shot-peening is compared with a shot-peening, has only changed the shot-peening parameter, does not need to change shot blasting equipment and bullet, and equipment and goods and materials investment are little, and technological operation is simple, the production efficiency height.Operation principle maturation of the present invention can realize that on common compressed air shotblasting machine embodiment is simple and easy to do.
Description of drawings
Fig. 1 be among the embodiment 1 composite shot blasting and single shot-peening material surface residual stress along the distribution curve of layer depth;
Fig. 2 be among the embodiment 1 composite shot blasting and single shot-peening material surface microhardness along the distribution curve of layer depth;
Fig. 3 is composite shot blasting and a single shot-peening material surface outline line among the embodiment 1.
Fig. 4 is composite shot blasting and a single shot-peening material surface outline line among the embodiment 2.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The experiment material of present embodiment: Inconel750 nickel-base alloy, shot-peening specimen size 70 * 20 * 20mm
3, be numbered No. 1.
During enforcement, utilize the pneumatic type compressed air shotblasting machine to carry out composite shot blasting and handle.At first No. 1 sample is implemented a shot-peening, the shot-peening condition is air pressure 0.4MPa, shot peening strength 0.16mmA.Carry out the secondary shot-peening then on the basis of a shot-peening, the shot-peening condition is air pressure 0.3MPa, shot peening strength 0.10mmA.Shot-peening and the used bullet of secondary shot-peening are identical, are the stainless steel bullet, 0.3 millimeter of diameter.
The comparative example
As a comparison, select material and the specimen size sample identical with No. 1 sample to carry out single shot-peening, be numbered No. 2, a shot-peening in shot blasting equipment and shot-peening condition and the composite shot blasting is identical.
Residual stress, microhardness and surface roughness evaluation
Utilize X ray stress ga(u)ge, microhardness testers and surface roughometer respectively, measure the distribution of shot-peening surface residual stress, microhardness distribution and the surface roughness of above-mentioned 1～No. 2 sample, the result is respectively shown in Fig. 1～3.
Fig. 1 is composite shot blasting and the single shot-peening material surface residual stress distribution curve along layer depth, the shot-peening residual stress is just different at nearly surface region, be that the nearly surface compress residual stresses of composite shot blasting is higher than single shot-peening, composite shot blasting sample surfaces residual compressive stress is-660MPa, be higher than single shot-peening sample-600MPa, and the nearly surface residual stress distribution curve of composite shot blasting is comparatively milder than a shot-peening.Fig. 2 is composite shot blasting and the single shot-peening material surface microhardness distribution curve along layer depth, the nearly surface microhardness of composite shot blasting sample is higher than single shot-peening, composite shot blasting sample surfaces microhardness is 685, be higher than-650 of single shot-peening sample, promptly the build up effect of nearly surf zone is more obvious.Fig. 3 is composite shot blasting and single shot-peening material surface outline line, shot-peening specimen surface roughness that composite shot blasting is obviously low.Compare with single shot-peening sample, Ra and Rz all obviously reduce, and reduce to 1.74 μ m and 9.46 μ m from 2.25 μ m and 12.10 μ m respectively.
The experiment material of present embodiment: 6351Al alloy, shot-peening specimen size 70 * 20 * 20mm
3, be numbered No. 3.
During enforcement, utilize the pneumatic type compressed air shotblasting machine to carry out composite shot blasting and handle.At first No. 3 samples are implemented a shot-peening, the shot-peening condition is air pressure 0.6MPa, shot peening strength 0.25mmA.Carry out the secondary shot-peening then on the basis of a shot-peening, the shot-peening condition is air pressure 0.4MPa, shot peening strength 0.15mmA.Shot-peening and the used bullet of secondary shot-peening are identical, are ceramic bullet, 0.2 millimeter of diameter.
The comparative example
As a comparison, select material and the specimen size sample identical with No. 3 samples to carry out single shot-peening, be numbered No. 4, a shot-peening in shot blasting equipment and shot-peening condition and the composite shot blasting is identical.
Surface roughness is estimated
Utilize surface roughometer, measure the surface roughness of above-mentioned 3～No. 4 samples, the result as shown in Figure 4.
Fig. 4 is composite shot blasting and single shot-peening material surface outline line, shot-peening specimen surface roughness that composite shot blasting is obviously low.Compare with single shot-peening sample, Ra and Rz all obviously reduce, and reduce to 3.48 μ m and 15.82 μ m from 4.59 μ m and 19.58 μ m respectively.
Comprehensive The above results adopts composite shot blasting to handle, and can increase material surface and nearly surface region residual compressive stress, improves surface and nearly surface region microhardness, and effectively reduces the surface roughness of shot-peening material, improves shot-peening material surface quality.
Claims (4)
1, a kind of composite shot blasting processing method of taking into account surface peening and polishing comprises the steps:
The first step is carried out shot-peening one time to material, makes the material shot peening strength that reaches capacity;
Second step, on the basis of a shot-peening, carry out the secondary shot-peening, by adjusting air pressure, the saturated shot peening strength of secondary shot-peening is about 0.6 times of saturated shot peening strength of shot-peening.
2, the composite shot blasting processing method of taking into account surface peening and polishing according to claim 1 is characterized in that, described shot-peening air pressure a 0.4～0.6MPa, shot peening strength 0.16～0.25mmA.
3, the composite shot blasting processing method of taking into account surface peening and polishing according to claim 1 is characterized in that, described secondary shot-peening air pressure 0.3～0.4MPa, shot peening strength 0.10～0.16mmA.
4, the composite shot blasting processing method of taking into account surface peening and polishing according to claim 1 is characterized in that, shot-peening and the used bullet of secondary shot-peening are identical, 0.2～0.3 millimeter of diameter.
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871039A (en) * | 2010-04-20 | 2010-10-27 | 上海电机学院 | Surface recombination shot-blasting processing method of stainless steel material |
| CN102189491A (en) * | 2010-02-09 | 2011-09-21 | 通用电气公司 | Peening process for enhancing surface finish of a component |
| CN102433421A (en) * | 2011-12-15 | 2012-05-02 | 比亚迪股份有限公司 | Amorphous alloy surface treatment process |
| CN102925836A (en) * | 2012-11-14 | 2013-02-13 | 江苏大学 | Method and device for laser peening aviation titanium alloy based on dynamic strain aging |
| CN103114184A (en) * | 2012-12-07 | 2013-05-22 | 无锡透平叶片有限公司 | Method of improving shot blasting surface fineness of stainless steel blades |
| CN103834887A (en) * | 2014-03-05 | 2014-06-04 | 大连交通大学 | Method of nano-crystallizing heat engine compound process for improving fatigue strength of titanium alloy |
| CN104674231A (en) * | 2013-11-29 | 2015-06-03 | 北京有色金属研究总院 | Aluminum alloy and surface reinforcing method of composite material of aluminum alloy |
| CN105074911A (en) * | 2013-02-25 | 2015-11-18 | 沙特基础全球技术有限公司 | Method of making a heat sink assembly, heat sink assemblies made therefrom, and illumants using the heat sink assembly |
| CN105132654A (en) * | 2015-08-31 | 2015-12-09 | 中国航空工业集团公司北京航空材料研究院 | Shot peening method for improving surface roughness of ultrahigh-strength steel parts |
| CN105171613A (en) * | 2015-08-14 | 2015-12-23 | 芜湖黄燕实业有限公司 | Sand blasting method for aluminum alloy wheel hub |
| CN107641697A (en) * | 2016-07-20 | 2018-01-30 | 株式会社日立制作所 | Bead for the tolerance that cavitates |
| CN109468446A (en) * | 2018-11-30 | 2019-03-15 | 安庆中船动力配套有限公司 | A kind of connecting rod shot-blast process |
| CN109494065A (en) * | 2018-11-09 | 2019-03-19 | 福州盛世凌云环保科技有限公司 | The anticorrosive long-life Telecommunication Transformers of high stable and its manufacturing method |
| CN112011674A (en) * | 2020-08-28 | 2020-12-01 | 东风商用车有限公司 | Composite shot blasting strengthening method for steel plate spring |
| CN112643554A (en) * | 2020-12-22 | 2021-04-13 | 中船重工龙江广瀚燃气轮机有限公司 | Blade liquid shot blasting control method |
| CN113005381A (en) * | 2021-02-09 | 2021-06-22 | 昆明理工大学 | Surface treatment method for tungsten carbide-based hard alloy |
| CN114559057A (en) * | 2022-01-27 | 2022-05-31 | 上海工程技术大学 | Composite device and method for improving fatigue performance of metal component manufactured by additive manufacturing |
| US20240200159A1 (en) * | 2022-12-14 | 2024-06-20 | Guangxi University | Method for compound strengthening treatment of gear surface |
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2009
- 2009-04-09 CN CN200910048995A patent/CN101530985A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189491A (en) * | 2010-02-09 | 2011-09-21 | 通用电气公司 | Peening process for enhancing surface finish of a component |
| CN101871039A (en) * | 2010-04-20 | 2010-10-27 | 上海电机学院 | Surface recombination shot-blasting processing method of stainless steel material |
| CN102433421A (en) * | 2011-12-15 | 2012-05-02 | 比亚迪股份有限公司 | Amorphous alloy surface treatment process |
| CN102925836A (en) * | 2012-11-14 | 2013-02-13 | 江苏大学 | Method and device for laser peening aviation titanium alloy based on dynamic strain aging |
| CN103114184A (en) * | 2012-12-07 | 2013-05-22 | 无锡透平叶片有限公司 | Method of improving shot blasting surface fineness of stainless steel blades |
| CN105074911A (en) * | 2013-02-25 | 2015-11-18 | 沙特基础全球技术有限公司 | Method of making a heat sink assembly, heat sink assemblies made therefrom, and illumants using the heat sink assembly |
| CN104674231A (en) * | 2013-11-29 | 2015-06-03 | 北京有色金属研究总院 | Aluminum alloy and surface reinforcing method of composite material of aluminum alloy |
| CN103834887B (en) * | 2014-03-05 | 2016-05-25 | 大连交通大学 | Improve the method for the heat engine combination process nanometer of titanium alloy fatigue strength |
| CN103834887A (en) * | 2014-03-05 | 2014-06-04 | 大连交通大学 | Method of nano-crystallizing heat engine compound process for improving fatigue strength of titanium alloy |
| CN105171613A (en) * | 2015-08-14 | 2015-12-23 | 芜湖黄燕实业有限公司 | Sand blasting method for aluminum alloy wheel hub |
| CN105171613B (en) * | 2015-08-14 | 2017-12-12 | 芜湖黄燕实业有限公司 | The blasting method of aluminium alloy wheel hub |
| CN105132654A (en) * | 2015-08-31 | 2015-12-09 | 中国航空工业集团公司北京航空材料研究院 | Shot peening method for improving surface roughness of ultrahigh-strength steel parts |
| CN107641697A (en) * | 2016-07-20 | 2018-01-30 | 株式会社日立制作所 | Bead for the tolerance that cavitates |
| CN109494065A (en) * | 2018-11-09 | 2019-03-19 | 福州盛世凌云环保科技有限公司 | The anticorrosive long-life Telecommunication Transformers of high stable and its manufacturing method |
| CN109468446A (en) * | 2018-11-30 | 2019-03-15 | 安庆中船动力配套有限公司 | A kind of connecting rod shot-blast process |
| CN112011674A (en) * | 2020-08-28 | 2020-12-01 | 东风商用车有限公司 | Composite shot blasting strengthening method for steel plate spring |
| CN112643554A (en) * | 2020-12-22 | 2021-04-13 | 中船重工龙江广瀚燃气轮机有限公司 | Blade liquid shot blasting control method |
| CN112643554B (en) * | 2020-12-22 | 2022-07-05 | 中船重工龙江广瀚燃气轮机有限公司 | Blade liquid shot blasting control method |
| CN113005381A (en) * | 2021-02-09 | 2021-06-22 | 昆明理工大学 | Surface treatment method for tungsten carbide-based hard alloy |
| CN113005381B (en) * | 2021-02-09 | 2022-03-18 | 昆明理工大学 | Surface treatment method for tungsten carbide-based hard alloy |
| CN114559057A (en) * | 2022-01-27 | 2022-05-31 | 上海工程技术大学 | Composite device and method for improving fatigue performance of metal component manufactured by additive manufacturing |
| CN114559057B (en) * | 2022-01-27 | 2023-11-10 | 上海工程技术大学 | Composite device and method for improving fatigue performance of additive manufacturing metal component |
| US20240200159A1 (en) * | 2022-12-14 | 2024-06-20 | Guangxi University | Method for compound strengthening treatment of gear surface |
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