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Machine translation
1. (WO2014178367) SHOT PEENING METHOD WITH WHICH HIGH COMPRESSIVE RESIDUAL STRESS IS OBTAINED
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/178367    International Application No.:    PCT/JP2014/061840
Publication Date: 06.11.2014 International Filing Date: 28.04.2014
IPC:
B24C 1/10 (2006.01), B24C 11/00 (2006.01)
Applicants: SANYO SPECIAL STEEL CO., LTD. [JP/JP]; 3007, Aza-Ichimonji, Nakashima, Shikama-ku, Himeji-shi, Hyogo 6728677 (JP)
Inventors: SAWADA Toshiyuki; (JP)
Agent: TAKAMURA Masaharu; Maxwell International IP Law Firm, Unity Forum II 3F, 1-4-1 Nerima, Nerima-ku, Tokyo 1760001 (JP)
Priority Data:
2013-095582 30.04.2013 JP
Title (EN) SHOT PEENING METHOD WITH WHICH HIGH COMPRESSIVE RESIDUAL STRESS IS OBTAINED
(FR) PROCEDE DE GRENAILLAGE DE PRECONTRAINTE AU MOYEN DUQUEL UNE TENSION RESIDUELLE COMPRESSIVE ELEVEE EST OBTENUE
(JA) 高い圧縮残留応力を得るショットピーニング方法
Abstract: front page image
(EN)Provided is a shot pending method comprising: a process for preparing a steel member, the Vickers hardness of the surface of which is at least 920 HV; and a process for projecting a shot material, which has a Vickers hardness of at least 1000 HV and a density of at least 5.5 Mg/m3 and which satisfies the formula: HVshot ≥ 0.4 x HVsteel + 620 (in the formula, HVshot is the Vickers hardness (HV) of the shot material and HVsteel is the Vickers hardness (HV) of the surface of the steel member) With said method, it is possible to obtain high compressive residual stresses of 2200 MPa and above that have not been possible in the past.
(FR)La présente invention concerne un procédé de grenaillage de précontrainte comprenant : un processus pour préparer un élément en acier, dont la surface a une dureté Vickers d'au moins 920 HV ; et un processus pour projeter un matériau de grenaille, qui a une dureté Vickers d'au moins 1 000 HV et une densité d'au moins 5,5 Mg/m 3 et qui satisfait la formule : HVgrenaille >= 0,4 x HVacier + 620 (dans la formule, HVgrenaille est la dureté Vickers (HV) du matériau de grenaille et HVacier est la dureté Vickers (HV) de la surface de l'élément en acier). Grâce audit procédé, il est possible d'obtenir des tensions résiduelles compressives élevées de 2 200 MPa et plus qui n'étaient pas possibles dans le passé.
(JA) 表面のビッカース硬さが920HV以上である鋼製部材を用意する工程と、この鋼製部材に、1000HV以上のビッカース硬さ、及び5.5Mg/m以上の密度を有し、かつ、下記式: HVshot≧0.4×HVsteel+620 (式中、HVshotは投射材のビッカース硬さ(HV)であり、HVsteelは鋼製部材表面のビッカース硬さ(HV)である) を満たす、投射材を投射する工程と、を含む、ショットピーニング方法が提供される。この方法によれば、従来にない2200MPa以上の高い圧縮残留応力を得ることができる。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)