JP2005002475A - 機械的に誘導される液体キャビテーションを使用して残留応力を変化させる方法 - Google Patents
機械的に誘導される液体キャビテーションを使用して残留応力を変化させる方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
- B23P9/04—Treating or finishing by hammering or applying repeated pressure
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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
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
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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
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- 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
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S72/00—Metal deforming
- Y10S72/707—Magnetism
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- 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
- Y10T29/00—Metal working
- Y10T29/47—Burnishing
- Y10T29/479—Burnishing by shot peening or blasting
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
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- Crystallography & Structural Chemistry (AREA)
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- Other Surface Treatments For Metallic Materials (AREA)
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Abstract
【解決手段】 機械的変換器(10)は液体キャビテーションを誘導して、液体(14)中に圧力波を発生させ、圧力波は金属面に当たって、局在弾性及び塑性引張微小ひずみを与える。圧力波は、引張応力を減少させるか、又は表面圧縮応力を形成することにより、処理済金属における表面引張応力を変化させる。圧縮波が発生され、金属面に当てられるまでに通過する液体を封じ込めるために変換器の動作面の周囲にブーツ(16)が設けられ、ブーツは変換器及び処理を受ける表面を密封する。
【選択図】 図1
Description
Claims (9)
- 金属面(12)における残留引張応力を変化させる方法において、
(a)液体中に圧縮波を形成するために音響キャビテーション(10)を機械的に誘導する過程と、
(b)引張応力を減少させるか、又は引張応力を圧縮応力に変換するために、誘導された圧縮波を金属面に当てる過程とから成る方法。 - 音響キャビテーションを発生する変換器の少なくとも一部を、金属面に当てられるべき局在圧縮波を提供する液体を入れるためのエンベロープの内部に包み込むこと(16)を含む請求項1記載の方法。
- 過程(a)及び(b)は液体環境(14)の中に浸漬されて実行される請求項1記載の方法。
- 音響キャビテーションを発生する変換器の少なくとも一部をその液体又は別の液体を入れるためのエンベロープの内部に包み込むこと(16)を含む請求項3記載の方法。
- 音響キャビテーションを発生する変換器(10)を金属面に沿って直線方向に横断することを含む請求項1記載の方法。
- 音響キャビテーションを発生する変換器を金属面に対向させて振動させることを含む請求項1記載の方法。
- 音響キャビテーションを発生する変換器により発生される圧力波を金属面に衝突させるために、変換器の動作面を金属面から離間させ、金属面に対向するように配置することを含む請求項1記載の方法。
- 過程(a)は、圧縮波を発生するために液体中に超音波変換器(10)を設けることを含む請求項1記載の方法。
- 過程(a)は、圧縮波を発生するために液体中に変換器(50)のアレイを設けることを含む請求項1記載の方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/460,180 US6993948B2 (en) | 2003-06-13 | 2003-06-13 | Methods for altering residual stresses using mechanically induced liquid cavitation |
US10/460,180 | 2003-06-13 |
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JP2005002475A true JP2005002475A (ja) | 2005-01-06 |
JP2005002475A5 JP2005002475A5 (ja) | 2007-08-02 |
JP4926384B2 JP4926384B2 (ja) | 2012-05-09 |
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Cited By (2)
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JP2006102871A (ja) * | 2004-10-05 | 2006-04-20 | Toshiba Plant Systems & Services Corp | 残留応力部分低減方法および残留応力部分低減装置 |
CN113234918A (zh) * | 2021-03-25 | 2021-08-10 | 山东大学 | 一种具有离焦量的双物理效应脉冲激光冲击方法 |
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US20040244882A1 (en) * | 2001-06-12 | 2004-12-09 | Lobanov Leonid M. | Method for processing welded metal work joints by high-frequency hummering |
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US20070014495A1 (en) * | 2005-07-15 | 2007-01-18 | Baker Hughes Incorporated | System, method, and apparatus for reducing residual stress in as-welded roller cone bit ball plug welds |
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CN113234918A (zh) * | 2021-03-25 | 2021-08-10 | 山东大学 | 一种具有离焦量的双物理效应脉冲激光冲击方法 |
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