CN110643797A - Shot blasting method with drying first and then wetting - Google Patents
Shot blasting method with drying first and then wetting Download PDFInfo
- Publication number
- CN110643797A CN110643797A CN201910920819.2A CN201910920819A CN110643797A CN 110643797 A CN110643797 A CN 110643797A CN 201910920819 A CN201910920819 A CN 201910920819A CN 110643797 A CN110643797 A CN 110643797A
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- dry
- shot blasting
- peening
- metal workpiece
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
Abstract
The invention provides a dry-then-wet shot blasting method, which comprises the following steps: 1) firstly, carrying out a dry shot blasting step: using conventional compressed air as power, and bombarding the surface of the metal workpiece by using pellets; 2) and then carrying out a wet shot blasting step: and spraying the liquid and the shot materials together to bombard the surface of the metal workpiece again. The dry-then-wet shot blasting method provided by the invention realizes the combination of the advantages of dry-wet shot blasting, improves the efficiency and quality of shot blasting on the premise of simultaneously ensuring the residual compressive stress of the surface layer and the deep layer, and also prolongs the service life of a metal workpiece.
Description
Technical Field
The invention relates to the field of shot blasting, in particular to a dry-then-wet shot blasting method.
Background
Shot blasting is a means for strengthening the surface of a metal workpiece widely used in factories, i.e. shot blasting is used for bombarding the surface of the sprayed metal workpiece to cause the surface of the sprayed metal workpiece to generate plastic deformation, so that residual compressive stress is generated on the surface of the metal workpiece to improve the fatigue strength, the stress corrosion resistance and the surface hardness of the metal workpiece.
The shot blasting treatment is suitable for most metals and parts in various shapes, and the equipment and the operation are simple, the cost is low, and the energy consumption is low, so the shot blasting treatment is widely applied to the fields of nuclear power, automobiles, aerospace and the like.
The existing shot blasting process adopts single dry shot blasting or wet shot blasting, the dry shot blasting efficiency is high, but the surface of a processed metal workpiece is rough, the dust is large, the grinding materials are broken more, the wet shot blasting has less pollution to the environment, the processed surface has certain polishing and protecting effects, and the efficiency is very low.
Disclosure of Invention
In view of this, the invention provides a dry-then-wet shot peening method, which can improve the peening efficiency and the quality of the surface of the metal workpiece on the premise of simultaneously ensuring the residual compressive stress of the surface layer and the deep layer, so as to improve the service life of the metal workpiece.
The invention provides a dry-then-wet shot blasting method, which comprises the following steps:
1) firstly, carrying out a dry shot blasting step: using conventional compressed air as power, and bombarding the surface of the metal workpiece by using pellets;
2) and then carrying out a wet shot blasting step: and (4) spraying the liquid and the shot materials together to bombard the surface of the metal workpiece again.
Further, in the step 1), the step 2) is performed after the residual compressive stress on the surface of the metal workpiece reaches the set requirement.
Further, the metal workpiece is a metal workpiece.
The invention provides a dry-then-wet shot blasting method which mainly comprises the following two steps: firstly, carrying out a dry shot blasting step: using conventional compressed air as power, and bombarding the surface of the metal workpiece by using pellets; and then carrying out a wet shot blasting step: and spraying the liquid and the shot materials together to bombard the surface of the metal workpiece again.
Therefore, the dry-then-wet shot blasting method provided by the invention realizes the combination of the advantages of the dry-wet shot blasting, improves the shot blasting efficiency and quality on the premise of simultaneously ensuring the residual compressive stress of the surface layer and the deep layer, and also prolongs the service life of the metal workpiece.
Therefore, compared with the prior art, the invention mainly has the following advantages:
1) the shot blasting efficiency is far higher than that of the traditional wet shot blasting;
2) the processed metal workpiece has a bright surface, and the problem of low roughness after the surface of the metal workpiece is polished by wet shot blasting is solved;
3) the residual compressive stress of the surface layer and the deep layer of the metal workpiece is ensured;
4) the service life of the metal workpiece is prolonged.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a histogram of the surface residual stress distribution of a flat metal workpiece obtained by a dry-then-wet shot peening method according to an embodiment of the present invention as compared to a flat metal workpiece obtained by a conventional process;
fig. 2 is a histogram of the surface roughness distribution of a flat metal workpiece obtained by a dry-then-wet shot peening method according to an embodiment of the present invention as compared to a flat metal workpiece obtained by a conventional process.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiment of the invention provides a dry-then-wet shot blasting method for processing a metal workpiece, which mainly comprises the following steps:
s1: firstly, carrying out a dry shot blasting step: using conventional compressed air as power, bombarding the surface of the metal workpiece by using pellets, and implementing the next step after the residual compressive stress on the surface of the metal workpiece reaches the set requirement;
s2: and then carrying out a wet shot blasting step: and spraying the liquid and the shot materials together to bombard the surface of the metal workpiece again.
The shot material, size, shot blasting duration and the like used in the dry shot blasting and the wet shot blasting are determined according to the material and result requirements of the metal workpiece to be processed.
The specific process parameters of the steps S1 and S2 in the dry-then-wet shot peening method provided by the embodiment of the invention are shown in the following table:
the first embodiment in the above table is the most preferred embodiment of the present invention, and the following is based on the first embodiment, and the residual stress and surface roughness of the surface of the metal workpiece obtained by the first dry-then-wet shot peening method provided by the first embodiment are analyzed in comparison with other shot peening methods (dry peening and wet peening) under the same conditions as follows:
as shown in fig. 1, a comparison data of the surface residual stress of a flat metal workpiece obtained by a dry-then-wet shot peening method according to an embodiment of the present invention is shown in comparison with the surface residual stress of a flat metal workpiece obtained by a conventional process.
Referring to fig. 2, a comparison of the surface roughness of a flat metal workpiece obtained by a dry-then-wet shot peening method according to an embodiment of the present invention is shown compared to the surface roughness of a flat metal workpiece obtained by a conventional process, and it can be seen that the surface roughness of the metal workpiece obtained by dry shot peening is the greatest, the surface roughness of the metal workpiece obtained by wet shot peening is the smallest, the smoothness is the best, but the residual stress layer is shallower.
Through the tests and comparison, the shot blasting method with the dry-first shot blasting and the wet-second shot blasting provided by the embodiment of the invention can improve the shot blasting efficiency on the premise of simultaneously ensuring the residual compressive stress of the surface layer and the deep layer, so that the obtained flat part has larger surface residual stress and smaller surface roughness value.
Therefore, compared with the prior art, the shot blasting method with the dry-first and the wet-second processing steps provided by the embodiment of the invention mainly has the following advantages:
1) the shot blasting efficiency is far higher than that of the traditional wet shot blasting;
2) the processed metal workpiece has bright surface, and the problem of low roughness after the surface of the metal workpiece is finished by wet shot blasting is solved:
3) the residual compressive stress of the surface layer and the deep layer of the metal workpiece is ensured;
4) the service life of the metal workpiece is prolonged.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A dry-then-wet shot peening method is characterized by comprising the following steps:
1) firstly, carrying out a dry shot blasting step: using conventional compressed air as power, and bombarding the surface of the metal workpiece by using pellets;
2) and then carrying out a wet shot blasting step: and spraying the liquid and the shot materials together to bombard the surface of the metal workpiece again.
2. A dry-then-wet shot peening method as set forth in claim 1, wherein in the step 1), the step 2) is performed after the residual compressive stress on the surface of the metal workpiece reaches a set requirement.
3. A dry-then-wet shot peening method according to claim 1, wherein in step 1), the shot size used is BZ 25.
4. A dry-then-wet shot peening method according to claim 1 or 3, wherein in the step 1), the peening pressure is controlled to be at least 0.3Mpa, the peening flow rate is controlled to be at least 2Kg/min, the throw distance is controlled to be at least 25mm, the peening speed is controlled to be at least 100mm/min, and the peening intensity is controlled to be 0.247 to 0.259 mmN.
5. A dry-then-wet shot peening method according to claim 1, wherein in step 2), the pellet size used is AGB 9.
6. A method of dry-then-wet shot peening according to claim 1 or 5, wherein in the step 2), the nozzle diameter is at least 8mm, the peening pressure is at least 0.2MPa, the throw-distance is controlled to be at least 100mm, the peening speed is controlled to be at least 5mm/min, and the peening intensity is controlled to be 0.078 to 0.162 mmN.
7. A method of dry-then-wet shot peening according to claim 6, wherein in step 2), the turntable speed is controlled to be at least 15 rpm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910920819.2A CN110643797A (en) | 2019-09-27 | 2019-09-27 | Shot blasting method with drying first and then wetting |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910920819.2A CN110643797A (en) | 2019-09-27 | 2019-09-27 | Shot blasting method with drying first and then wetting |
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| CN110643797A true CN110643797A (en) | 2020-01-03 |
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| CN201910920819.2A Pending CN110643797A (en) | 2019-09-27 | 2019-09-27 | Shot blasting method with drying first and then wetting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621629A (en) * | 2020-06-29 | 2020-09-04 | 安徽天航机电有限公司 | Shot blasting process for nut surface strengthening |
| CN112338814A (en) * | 2020-10-29 | 2021-02-09 | 中国航发南方工业有限公司 | Composite shot blasting method for turbine disk |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238418A (en) * | 1984-05-11 | 1985-11-27 | Sumitomo Metal Ind Ltd | Manufacture of sucker rod for wet environment containing gaseous carbon dioxide |
| CA2164021A1 (en) * | 1995-11-29 | 1997-05-30 | Leslie Wilfred Benum | Surface treatment of stainless steel |
| CN102672625A (en) * | 2011-03-17 | 2012-09-19 | 新东工业株式会社 | Nozzle for shot peening and shot peening device with the nozzle |
| CN109487183A (en) * | 2018-12-10 | 2019-03-19 | 同济大学 | A kind of wet blasting surface modifying method suitable for aluminium lithium alloy |
| CN209092986U (en) * | 2018-09-14 | 2019-07-12 | 上海萨克斯动力总成部件系统有限公司 | The dust removing treatment system that shot-blasting machine dry and wet is used in conjunction |
| CN110129698A (en) * | 2019-05-05 | 2019-08-16 | 同济大学 | A kind of wet blasting surface modifying treatment suitable for nickel base superalloy |
-
2019
- 2019-09-27 CN CN201910920819.2A patent/CN110643797A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60238418A (en) * | 1984-05-11 | 1985-11-27 | Sumitomo Metal Ind Ltd | Manufacture of sucker rod for wet environment containing gaseous carbon dioxide |
| CA2164021A1 (en) * | 1995-11-29 | 1997-05-30 | Leslie Wilfred Benum | Surface treatment of stainless steel |
| CN102672625A (en) * | 2011-03-17 | 2012-09-19 | 新东工业株式会社 | Nozzle for shot peening and shot peening device with the nozzle |
| CN209092986U (en) * | 2018-09-14 | 2019-07-12 | 上海萨克斯动力总成部件系统有限公司 | The dust removing treatment system that shot-blasting machine dry and wet is used in conjunction |
| CN109487183A (en) * | 2018-12-10 | 2019-03-19 | 同济大学 | A kind of wet blasting surface modifying method suitable for aluminium lithium alloy |
| CN110129698A (en) * | 2019-05-05 | 2019-08-16 | 同济大学 | A kind of wet blasting surface modifying treatment suitable for nickel base superalloy |
Non-Patent Citations (1)
| Title |
|---|
| TC4钛合金喷丸强化组织与性能研究: "TC4钛合金喷丸强化组织与性能研究", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111621629A (en) * | 2020-06-29 | 2020-09-04 | 安徽天航机电有限公司 | Shot blasting process for nut surface strengthening |
| CN111621629B (en) * | 2020-06-29 | 2022-03-18 | 安徽天航机电有限公司 | Shot blasting process for nut surface strengthening |
| CN112338814A (en) * | 2020-10-29 | 2021-02-09 | 中国航发南方工业有限公司 | Composite shot blasting method for turbine disk |
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