Global Patent Index - EP 1485510 A4

EP 1485510 A4 20070620 - METHOD AND APPARATUS FOR PROVIDING A LAYER OF COMPRESSIVE RESIDUAL STRESS

Title (en)

METHOD AND APPARATUS FOR PROVIDING A LAYER OF COMPRESSIVE RESIDUAL STRESS

Title (de)

VERFAHREN UND VORRICHTUNG ZUR BEREITSTELLUNG EINER RESTDRUCKSPANNUNGSSCHICHT

Title (fr)

PROCEDE ET APPAREIL D'APPLICATION D'UNE COUCHE DE CONTRAINTE EN COMPRESSION RESIDUELLE

Publication

EP 1485510 A4 20070620 (EN)

Application

EP 03716639 A 20030314

Priority

  • US 0308130 W 20030314
  • US 34648902 P 20020318
  • US 37675702 P 20020430

Abstract (en)

[origin: WO03080877A1] The shot peening method and apparatus (Fig. 13) of the present invention utilizes control of the shot peening coverage to provide higher surface compression and comparable depth of compression to conventional 100% coverage peening but with reduced cold working providing improved thermal stability and reduction in shot peening time and cost. A preferred embodiment of this invention employs x-ray diffraction (Fig. 13) residual stress and percent cold work determinated by line broadening to establish the optimal degree of coverage for a given material and shot peening intensity.

IPC 1-7

C21D 7/06

IPC 8 full level

C21D 7/06 (2006.01)

CPC (source: EP)

C21D 7/06 (2013.01)

Citation (search report)

  • [X] EP 0516857 A1 19921209 - NIPPON STEEL CORP [JP]
  • [X] US 3844846 A 19741029 - FRISKE W, et al
  • [X] US 3950642 A 19760413 - FELD PAUL G
  • [X] US 5581483 A 19961203 - THOMPSON ROBERT A [US], et al
  • [X] EP 0226502 A1 19870624 - AEROSPATIALE [FR]
  • [A] F. PUENTE LEON: "Determination of the coverage of shot peened surfaces", CONFERENCE SURFACE TREATMENT, SEVILLE, SPAIN, 20 June 2001 (2001-06-20), WIT PRESS, SOUTHAMPTON, 2001, pages 1 - 10, XP002319436
  • [A] M. GUAGLIANO ET AL.: "An approach to relate the shot peening parameters to the induced residual stresses", INTERNATIONAL CONFERENCE ON SHOT PEENING, vol. ICSP, no. 7, 28 September 1999 (1999-09-28), pages 274 - 282, XP002319437
  • [A] J. SOLIS ROMERO ET AL.: "Optimisation of the shot peening process in terms of fatigue resistance", INTERNATIONAL CONFERENCE ON SHOT PEENING, vol. ICSP, no. 7, 28 September 1999 (1999-09-28), pages 117 - 126, XP002319438
  • [A] P.S. PREVEY: "X-Ray diffraction characterization of residual stresses produced by shot peening", SHOT PEENING THEORY AND APPLICATION, SERIES ED. A. NIKU-LARI, 1990, GOURNAY SUR MARNE, FRANCE, pages 1 - 8, XP002319439
  • [A] M.Y. ABYANEH: "Fundamental aspects of shot peening coverage control; PART ONE: Formulation of single and multiple impacting", INTERNATIONAL CONFERENCES ON SHOT PEENING, vol. ICSP, no. 6, 2 September 1996 (1996-09-02), pages 438 - 447, XP002319440
  • [A] M.Y. ABYANEH: "Fundamental aspects of shot peening coverage control; PART TWO: Formulation of single and multiple impacting", INTERNATIONAL CONFERENCES ON SHOT PEENING, vol. ICSP, no. 6, 2 September 1996 (1996-09-02), pages 448 - 455, XP002319441
  • [X] M.Y. ABYANEH & D. KIRK: "Fundamental aspects of shot peening coverage control; PART THREE: Formulation of single and multiple impacting", INTERNATIONAL CONFERENCES ON SHOT PEENING, vol. ICSP, no. 6, 2 September 1996 (1996-09-02), pages 456 - 463, XP002319442
  • See references of WO 03080877A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 03080877 A1 20031002; AU 2003220340 A1 20031008; AU 2003220340 B2 20080911; AU 2003220340 B8 20090115; CA 2479373 A1 20031002; CA 2479373 C 20100601; EP 1485510 A1 20041215; EP 1485510 A4 20070620

DOCDB simple family (application)

US 0308130 W 20030314; AU 2003220340 A 20030314; CA 2479373 A 20030314; EP 03716639 A 20030314