WO2006070701A1 - 表面処理された軽合金部材およびその製造方法 - Google Patents
表面処理された軽合金部材およびその製造方法 Download PDFInfo
- Publication number
- WO2006070701A1 WO2006070701A1 PCT/JP2005/023664 JP2005023664W WO2006070701A1 WO 2006070701 A1 WO2006070701 A1 WO 2006070701A1 JP 2005023664 W JP2005023664 W JP 2005023664W WO 2006070701 A1 WO2006070701 A1 WO 2006070701A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- alloy member
- light alloy
- treatment
- shot peening
- anodizing
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
- B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
-
- 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
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
- C25D11/02—Anodisation
- C25D11/04—Anodisation of aluminium or alloys based thereon
- C25D11/16—Pretreatment, e.g. desmutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12993—Surface feature [e.g., rough, mirror]
Definitions
- the present invention relates to a surface-treated light alloy member and a method for producing the same.
- shot peening treatment As a surface modification method for increasing the fatigue strength of a metal material, shot peening treatment is known.
- the shot peung treatment is, for example, by hitting an infinite number of particles (shot material) with a particle size of about 0.8 mm against the metal material surface together with compressed air, increasing the hardness of the metal material surface and compressing stress at a certain depth.
- shots material an infinite number of particles
- This is a method of forming a layer having
- Non-Patent Document 1 As a method for enhancing the effect of improving the fatigue strength of an aluminum material by shot peening treatment, a method using fine particles finer than conventional particles as a shot material is disclosed (see Non-Patent Document 1).
- the fatigue strength is improved by shot peening treatment, followed by anodizing treatment.
- Aluminum alloy members that have been subjected to (anodized film treatment) to provide corrosion resistance are used as structural members for aircraft and various transportation equipment.
- Non-patent document 1 Yasuhiro Kataoka et al .: “Surface modification of aluminum alloy by fine particle peening and coating”, Aichi Prefectural Industrial Technology Research Institute research report (2002), Internet URL: http: // www .aichi-inst.jp / html / reports / repo2002 / ri-2.PDF
- the present invention has been made in view of such circumstances, and provides a surface-treated light alloy member capable of achieving both fatigue strength and corrosion resistance and a method for producing the same. Objective.
- the surface-treated light alloy member of the present invention and the manufacturing method thereof employ the following means.
- the method for producing a surface-treated light alloy member according to the present invention has an average particle size.
- a particle projection process that projects an air stream containing particles of 10 zm or more and 200 zm or less onto the surface of a light alloy member with an injection pressure of 0.2 MPa or more and IMPa or less, and an anodizing treatment that performs anodizing treatment on the surface of the light alloy member Process.
- the light alloy member to be subjected to the surface treatment of the present invention is preferably an aluminum alloy member.
- aluminum alloy is a material that can be suitably used as a structural member for transportation equipment such as aircraft among light alloys that can be anodized.
- the coverage of the particle projection processing is 50% or more 1000
- a compressive stress of 200 MPa or more exists in a portion within 5 ⁇ m from the surface of the light alloy member after the particle projection treatment step and before the anodizing treatment step.
- the ten-point average roughness of the surface of the alloy member is preferably less than 10 ⁇ m.
- the fatigue fracture base point of the light alloy member is inside the member, so that the fatigue strength is hardly reduced even after anodizing treatment.
- the anodizing treatment may employ a boric acid monosulfate anodizing treatment.
- the boric acid sulfate anodizing treatment is preferable because it has a small impact on the environment, but there is a problem that the fatigue strength is greatly reduced as compared with the conventional chromate anodizing treatment and sulfuric acid anodizing treatment.
- the use of the method of the present invention makes it possible to prevent a decrease in fatigue strength even in the treatment with boric acid monosulfate anodized.
- the light alloy member of the present invention is a light alloy member having an anodic oxide film on the surface, and a ten-point average of the surface in at least a part of the surface having the anodic oxide film after the particle projection treatment step.
- This light alloy member is a member having both corrosion resistance and fatigue strength.
- FIG. 1 is a graph showing the relationship between the distance from a material surface and the residual stress of a test piece subjected to shot peening in Reference Examples 1 to 3 and an untreated test piece.
- FIG. 2 is a graph (SN curve) showing fatigue characteristics of Reference Examples 1 and 3, Examples, Comparative Examples 1 and 2, and an untreated specimen.
- FIG. 3 is a scanning electron microscope (SEM) photograph of a fracture surface of a specimen of Reference Example 1 (shot peening treatment with fine particles).
- FIG. 4 is a scanning electron microscope (SEM) photograph of a fracture surface of a test piece of an example (shot anodization after shot peening treatment with fine particles).
- FIG. 5 is a scanning electron microscope (SEM) photograph of a fracture surface of a specimen of Reference Example 3 (shot peening treatment with normal particles).
- FIG. 6 is a scanning electron microscope (SEM) photograph of a fracture surface of a test piece of Comparative Example 1 (shot anodizing treatment after shot peening treatment with normal particles).
- FIG. 7 is a scanning electron microscope (SEM) photograph of a fracture surface of a test piece of an untreated aluminum alloy member.
- FIG. 8 is a scanning electron microscope (SEM) photograph of a fracture surface of a test piece of Comparative Example 2 (anodized on an untreated aluminum alloy member).
- FIG. 9 A scanning electron microscope (SEM) photograph of the surface of a specimen of Reference Example 1 (shot-peening treatment with fine particles).
- FIG. 10 is a scanning electron microscope (SEM) photograph of a surface of a test piece of an example (shot anodizing treatment after fine particle peening treatment).
- FIG. 11 is a scanning electron microscope (SEM) photograph of the surface of a specimen of Reference Example 3 (shot peening treatment using normal particles).
- FIG. 12 is a scanning electron microscope (SEM) photograph of the surface of a test piece of Comparative Example 1 (normally shot-peening treatment followed by anodizing treatment).
- FIG. 13 is a scanning electron microscope (SEM) photograph of the surface of a test piece of an untreated aluminum alloy member.
- FIG. 14 is a scanning electron microscope (SEM) photograph of the surface of a test piece of Comparative Example 2 (an anodized aluminum alloy member is anodized).
- the light alloy member to be treated is a light alloy member that can be anodized (anodized film treatment), typically an aluminum alloy. Member.
- anodized film treatment typically an aluminum alloy.
- the present invention is not limited to this.
- particles (shot material) used for particle projection treatment are hard metals, ceramics, glass and the like. Particles, preferably ceramic particles such as alumina and silica particles.
- a shot material having a particle size of about 0.8 mm is used.
- the average particle size is 10 ⁇ m, which is about one-tenth the size of the conventional shot material.
- Particles having a particle size of 200 ⁇ m or more and preferably 30 ⁇ m or more and 100 ⁇ m or less are used as the shot material.
- the reason why the particle size of the shot material is smaller than that of the conventional one is that when shot material with a size in this range is used and the shot peening process is performed at a faster injection speed than the conventional method.
- the present inventors Compared to conventional shot peening treatment, the present inventors have improved fatigue life by 5 to 10 times, and can achieve both high fatigue life and high corrosion resistance, with almost no decrease in fatigue life due to ananodic treatment. This is due to knowledge. If the size of the shot material particles is larger than 200 ⁇ m, the material surface will be damaged by the excessive kinetic energy of the particles, so a sufficient fatigue life improvement effect cannot be obtained. If the size of the shot material particles is smaller than 10 ⁇ m, it is difficult to obtain a stable injection state.
- the injection speed of the shot material is defined by the injection pressure of the compressed air.
- the injection pressure in the shot peening treatment of the present invention is preferably 0. IMPa or more and IMPa or less. 0.3 MPa or more and 0.6 MPa or less is more preferable. If the injection pressure is greater than IMPa, the material surface will be damaged by the excessive kinetic energy of the particles, so a sufficient fatigue life improvement effect cannot be obtained. If the injection pressure is less than 0. IMPa, it is difficult to obtain a stable injection state.
- the shape of the shot material particles is preferably spherical. This is because if the shot material is sharp, the surface of the aluminum alloy member may be damaged.
- the coverage of the shot peening treatment is preferably 50 to 1000%, more preferably 100 to 500%. If the coverage is 50% or less, sufficient improvement in fatigue strength cannot be obtained. Moreover, when the coverage is 1000% or more, the compressive residual stress on the outermost surface decreases due to the temperature rise of the material surface, and a sufficient effect of improving fatigue strength cannot be obtained.
- the aluminum alloy member subjected to the shot peening treatment under the above conditions preferably has the following surface characteristics.
- High compressive residual stress of 200MPa or more exists on the outermost surface or in a shallow part within 5 ⁇ m from the outermost surface.
- the fatigue life is greatly improved because the surface is strengthened and fatigue fracture occurs not in the surface but in the material.
- the surface roughness after the shot peening treatment is less than 10 / im, preferably less than 5 ⁇ , as a ten-point average roughness Rz. Since the unevenness on the surface is fine, the surface becomes even smoother by anodizing the next step.
- the conventional shot peening treatment results in a rough surface with a 10-point average roughness Rz of about 50 ⁇ m, resulting in damage to the surface (such as the occurrence of microcracks) and a decrease in fatigue life. ing.
- the rough uneven portion formed on the surface by the conventional shot peening treatment is further emphasized by the anodizing treatment in the next step to become a sensitized surface.
- the anodizing treatment is performed on the aluminum alloy member that has been subjected to the shot peening treatment.
- an anodizing treatment usually performed on a light alloy member can be employed.
- a boric acid monosulfate anodizing treatment BSAA
- a chromate anodizing treatment or the like can be adopted.
- boric acid-sulfuric acid anodized treatment is preferred because it has less impact on the environment.
- the aluminum alloy member subjected to the surface treatment of the present invention is obtained by sequentially performing shot peening treatment and anodizing treatment on the aluminum alloy member under the above-mentioned conditions.
- a shot peening treatment was applied to a tensile specimen 15EA and a flat specimen 5EA of aluminum alloy parts in the same manner as in Reference Example 1 except that the coverage was changed to 3000%.
- Tension The 10-point average roughness Rz of the surface of the fatigue test piece after shot peening is 6.1 / im.
- the compressive residual stress at the outermost surface was as follows.
- Reference Example 1 (Fine particles; coverage 300%): One 230MPa
- Reference Example 2 (Fine particles; coverage 3000%): One 220MPa
- Reference Example 3 (normal particles; coverage 300%): One 180MPa
- the tensile fatigue life at a tensile stress of 350 MPa was as follows.
- the SN curve of Reference Example 1 and the SN curve of the example are almost the same line. That is, the example of the present invention in which the anodizing process was performed after the shot-peening process with fine particles significantly improved the fatigue life compared to the comparative example 1 in which the anodizing process was performed after the shot-peening process with normal particles. Moreover, it can be seen that there is almost no decrease in fatigue life due to anodization. Therefore, in this embodiment, it is possible to sufficiently consider the improvement of the fatigue life by the sail peening process in the member design. Conventionally, it has been considered that the fatigue life improved by shot peening treatment is reduced by anodizing treatment. When shot peening with fine particles is performed under the conditions of the present invention, there is almost no decrease in fatigue life by anodizing treatment. That is the knowledge obtained for the first time by the present inventors.
- Comparative Example 1 shows that the fatigue life is less improved by shot peening, the fatigue life is reduced by force and anodizing, and the fatigue life is lower than that of an untreated aluminum alloy member. .
- Figures 3 to 8 are scanning electron microscope (SEM) photographs of fracture surfaces of tensile fatigue specimens.
- Fig. 3 shows reference example 1 (shot peening treatment with fine particles)
- Fig. 4 shows an example (anodization treatment after shot peening treatment with fine particles)
- Fig. 5 shows reference example 3 (shoulder peening treatment with normal particles).
- Fig. 6 shows the test of Comparative Example 1 (anodized after shot peening with normal particles)
- Fig. 7 shows the untreated aluminum alloy member
- Fig. 8 shows the comparative example 2 (anodized on the untreated aluminum alloy member). It is a scanning photomicrograph of a piece. In each picture, the arrows indicate the starting point of destruction and the direction of destruction.
- the material Since the surface is defective and weak in a sense, the material usually breaks from the surface. However, when shot peening is performed on fine particles, a high compressive residual stress of 200 MPa or more exists in a shallow part within 5 / m from the outermost surface, so the starting point of fracture is at the defect (inclusions, etc.) site inside the material. Become. This internal destruction is the cause of the long life.
- Figures 9 to 14 are scanning electron microscope (SEM) photographs of the surface of a tensile fatigue test piece
- Figure 9 is Reference Example 1 (shot peening treatment with fine particles)
- Figure 10 is an example (shot with fine particles).
- Fig. 11 shows Reference Example 3 (with normal particles).
- Fig. 12 is Comparative Example 1 (anodizing treatment after shot peening treatment with normal particles)
- Fig. 13 is an untreated aluminum alloy member
- Fig. 14 is Comparative Example 2 (anodizing treatment on an untreated aluminum alloy member) 2) is a scanning micrograph of the test piece.
- the fine dimple shape (Fig. 9) generated by shot-peening treatment with fine particles is smoothed by anodizing treatment (Fig. 10). Since anodization is a chemical reaction in solution, a partial dissolution phenomenon is considered to have occurred. Such a smooth surface is preferred because it has a high fatigue life (if other conditions such as compressive stress are the same).
- the surface-treated light alloy member by the production method of the present invention is suitably used as a structural member in the field of transportation equipment such as aircraft and automobiles.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Chemical Treatment Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05819644A EP1862569A4 (en) | 2004-12-28 | 2005-12-22 | SURFACE-TREATED LIGHT-TREATED ALLIED ELEMENT AND METHOD FOR MANUFACTURING THE SAME |
CA2592523A CA2592523C (en) | 2004-12-28 | 2005-12-22 | Surface-treated light alloy member and method for manufacturing same |
US11/794,261 US20080085421A1 (en) | 2004-12-28 | 2005-12-22 | Surface-Treated Light Alloy Member and Method for Manufacturing Same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004381551A JP4727226B2 (ja) | 2004-12-28 | 2004-12-28 | 表面処理された軽合金部材およびその製造方法 |
JP2004-381551 | 2004-12-28 |
Publications (1)
Publication Number | Publication Date |
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WO2006070701A1 true WO2006070701A1 (ja) | 2006-07-06 |
Family
ID=36614818
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/023664 WO2006070701A1 (ja) | 2004-12-28 | 2005-12-22 | 表面処理された軽合金部材およびその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080085421A1 (ja) |
EP (1) | EP1862569A4 (ja) |
JP (1) | JP4727226B2 (ja) |
CA (1) | CA2592523C (ja) |
WO (1) | WO2006070701A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5086756B2 (ja) | 2007-10-05 | 2012-11-28 | 三菱重工業株式会社 | 金属部材の補修方法 |
JP5358252B2 (ja) * | 2009-03-31 | 2013-12-04 | Dowaサーモテック株式会社 | 皮膜形成装置および皮膜形成方法 |
FR2981951B1 (fr) * | 2011-10-26 | 2013-11-01 | Norsk Hydro As | Procede de finition anodisee d'un profile metallique a base d'aluminium, avec motif, et profile ainsi obtenu |
DE102011087880B3 (de) | 2011-12-07 | 2013-01-24 | Federal-Mogul Wiesbaden Gmbh | Verfahren zur Herstellung von Lagerschalen für Gleitlager |
JP2016182657A (ja) * | 2015-03-26 | 2016-10-20 | 株式会社神戸製鋼所 | アルミニウム合金製サスペンションアームおよびその製造方法 |
JP6525035B2 (ja) | 2017-08-29 | 2019-06-05 | 日本軽金属株式会社 | アルミニウム部材及びその製造方法 |
CN113215634B (zh) * | 2021-04-15 | 2022-08-09 | 中国航空制造技术研究院 | 一种提高铝合金耐腐蚀及抗疲劳性能的方法 |
JP2023005757A (ja) * | 2021-06-29 | 2023-01-18 | 新東工業株式会社 | 応力基準片の製造方法 |
CN115874243B (zh) * | 2022-10-19 | 2023-09-15 | 浙江中普厨具制造有限公司 | 一种烹饪锅具的制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002069695A (ja) * | 2000-09-05 | 2002-03-08 | Nippon Light Metal Co Ltd | 表面処理アルミニウム材及びその製造方法 |
Family Cites Families (16)
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US3787191A (en) * | 1969-02-25 | 1974-01-22 | L Duncan | Method of producing reflective surfaces and article |
US3758203A (en) * | 1972-01-27 | 1973-09-11 | Halco Ind Inc | Eyeglasses frame construction |
GB1557281A (en) * | 1976-10-21 | 1979-12-05 | Martin Marietta Corp | Manufacture of low reflectance surfaces involving anodising |
US4380966A (en) * | 1980-10-11 | 1983-04-26 | Canon Kabushiki Kaisha | Development apparatus |
JPS59113199A (ja) * | 1982-12-17 | 1984-06-29 | Okuno Seiyaku Kogyo Kk | アルミニウム合金鋳物又はアルミニウム合金ダイカストの表面処理方法 |
JPS6019593A (ja) * | 1983-07-14 | 1985-01-31 | Fuji Photo Film Co Ltd | 平版印刷版用支持体の製造方法 |
JPS63190150A (ja) * | 1987-02-02 | 1988-08-05 | Sumitomo Light Metal Ind Ltd | 金属光沢の優れたオ−トバイリムの製造方法 |
EP0397555B1 (en) * | 1989-05-08 | 1994-01-05 | Sumitomo Metal Industries, Ltd. | Electroplating of hot-galvanized steel sheet and continuous plating line therefor |
US4894127A (en) * | 1989-05-24 | 1990-01-16 | The Boeing Company | Method for anodizing aluminum |
US5240590A (en) * | 1989-07-19 | 1993-08-31 | Seagate Technology, Inc. | Process for forming a bearing surface for aluminum alloy |
US6242111B1 (en) * | 1992-09-17 | 2001-06-05 | Applied Materials, Inc. | Anodized aluminum susceptor for forming integrated circuit structures and method of making anodized aluminum susceptor |
US5911619A (en) * | 1997-03-26 | 1999-06-15 | International Business Machines Corporation | Apparatus for electrochemical mechanical planarization |
JP3160229B2 (ja) * | 1997-06-06 | 2001-04-25 | 日本エー・エス・エム株式会社 | プラズマcvd装置用サセプタ及びその製造方法 |
JP2001011690A (ja) * | 1999-06-25 | 2001-01-16 | Nippon Light Metal Co Ltd | 表面処理金属材及びその製造方法 |
JP2002082316A (ja) * | 2000-09-05 | 2002-03-22 | Sanriibu:Kk | マグネシウム眼鏡フレームの製造方法 |
JP4194769B2 (ja) * | 2001-05-16 | 2008-12-10 | 富士フイルム株式会社 | 平版印刷版用支持体の製造方法 |
-
2004
- 2004-12-28 JP JP2004381551A patent/JP4727226B2/ja not_active Expired - Fee Related
-
2005
- 2005-12-22 CA CA2592523A patent/CA2592523C/en not_active Expired - Fee Related
- 2005-12-22 WO PCT/JP2005/023664 patent/WO2006070701A1/ja active Application Filing
- 2005-12-22 US US11/794,261 patent/US20080085421A1/en not_active Abandoned
- 2005-12-22 EP EP05819644A patent/EP1862569A4/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002069695A (ja) * | 2000-09-05 | 2002-03-08 | Nippon Light Metal Co Ltd | 表面処理アルミニウム材及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
EP1862569A1 (en) | 2007-12-05 |
CA2592523A1 (en) | 2006-07-06 |
US20080085421A1 (en) | 2008-04-10 |
JP2006188720A (ja) | 2006-07-20 |
JP4727226B2 (ja) | 2011-07-20 |
CA2592523C (en) | 2011-07-26 |
EP1862569A4 (en) | 2010-07-07 |
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