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1. (WO2014196431) BEARING COMPONENT AND ROLLING BEARING
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2014/196431    International Application No.:    PCT/JP2014/064118
Publication Date: 11.12.2014 International Filing Date: 28.05.2014
IPC:
F16C 33/62 (2006.01), C22C 38/00 (2006.01), C22C 38/18 (2006.01), C23C 8/32 (2006.01), F16C 19/06 (2006.01), F16C 19/34 (2006.01), F16C 33/32 (2006.01), F16C 33/36 (2006.01), F16C 33/64 (2006.01), C21D 1/06 (2006.01), C21D 9/40 (2006.01)
Applicants: NTN CORPORATION [JP/JP]; 3-17, Kyomachibori 1-chome, Nishi-ku, Osaka-shi, Osaka 5500003 (JP) (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW only).
SATO, Daisuke [JP/JP]; (JP) (US only).
OHKI, Chikara [JP/JP]; (JP) (US only)
Inventors: SATO, Daisuke; (JP).
OHKI, Chikara; (JP)
Agent: FUKAMI PATENT OFFICE, P.C.; Nakanoshima Central Tower, 2-7, Nakanoshima 2-chome, Kita-ku, Osaka-shi, Osaka 5300005 (JP)
Priority Data:
2013-120138 06.06.2013 JP
2013-120139 06.06.2013 JP
2013-120140 06.06.2013 JP
Title (EN) BEARING COMPONENT AND ROLLING BEARING
(FR) COMPOSANTS DE PALIER, ET PALIER À ROULEMENT
(JA) 軸受部品および転がり軸受
Abstract: front page image
(EN)Bearing components (11, 12, 13) which are formed of a steel that contains from 0.95% by mass to 1.1% by mass (inclusive) of carbon, less than 0.3% by mass of silicon, less than 0.5% by mass of manganese, less than 0.008% by mass of sulfur and from 1.4% by mass to 1.6% by mass (inclusive) of chromium with the balance made up of iron and impurities, and the surface layer parts of which including contact surfaces (11A, 12A, 13A) that come into contact with another component are provided with carbonitrided layers. The average nitrogen concentration in the surface layer parts is from 0.3% by mass to 0.6% by mass (inclusive), and the nitrogen concentration variation in the surface layer parts is 0.1% by mass or less. The area ratio of precipitates in regions where the carbonitrided layers are not formed in the bearing components is 7% or less.
(FR)L'invention concerne des composants de palier (11, 12, 13) qui contiennent au moins 0,95% en masse et au plus 1,1% en masse de carbone, moins de 0,3% en masse de silicium, moins de 0,5% en masse de manganèse, moins de 0,008% en masse de soufre, et au moins 1,4% en masse et moins de 1,6% en masse de chrome, le reste consistant en un acier constitué de fer et des impuretés inévitables, et qui présentent une couche de carbonitruration formée sur une partie couche superficielle qui inclut des faces de contact (11A, 12A, 13A) consistant en des couches en contact avec d'autres composants. Dans ladite partie couche superficielle, la concentration moyenne en azote est d'au moins 0,3% en masse et d'au plus 0,6% en masse, et les variations de concentration en azote sont d'au plus 0,1% en masse. Dans lesdits composants de palier, le rapport de surface d'un dépôt dans une région dans laquelle la couche de carbonitruration n'est pas formée, est d'au plus 7%.
(JA) 0.95質量%以上1.1質量%以下の炭素と、0.3質量%未満の珪素と、0.5質量%未満のマンガンと、0.008質量%未満の硫黄と、1.4質量%以上1.6質量%未満のクロムとを含み、残部鉄および不純物からなる鋼からなり、他の部品と接触する面である接触面(11A,12A,13A)を含む表層部に浸炭窒化層が形成された軸受部品(11,12,13)である。上記表層部における平均窒素濃度が0.3質量%以上0.6質量%以下であり、かつ、上記表層部における窒素濃度のばらつきが0.1質量%以下である。上記軸受部品では、浸炭窒化層が形成されていない領域における析出物の面積率が7%以下である。
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)