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1. (WO2013157351) ROUND BILLET FOR SEAMLESS METAL TUBE AND METHOD FOR PRODUCING SEAMLESS METAL TUBE
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/157351 International Application No.: PCT/JP2013/058352
Publication Date: 24.10.2013 International Filing Date: 22.03.2013
IPC:
B21B 19/04 (2006.01) ,B21B 19/06 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B
ROLLING OF METAL
19
Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
02
the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling
04
Rolling basic material of solid, i.e. non-hollow, structure; Piercing
B PERFORMING OPERATIONS; TRANSPORTING
21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B
ROLLING OF METAL
19
Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
02
the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling
06
Rolling hollow basic material
Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION[JP/JP]; 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071, JP
Inventors: FUJIWARA, Masakazu; JP
Agent: UEBA Hidetoshi; INTELIX Patent & Law Firm, Dojima Axis Building, 2-28, Dojimahama 2-chome, Kita-ku, Osaka-shi, Osaka 5300004, JP
Priority Data:
2012-09479318.04.2012JP
Title (EN) ROUND BILLET FOR SEAMLESS METAL TUBE AND METHOD FOR PRODUCING SEAMLESS METAL TUBE
(FR) RONDIN DE TUBE MÉTALLIQUE SANS SOUDURE ET PROCÉDÉ DE PRODUCTION D'UN TUBE MÉTALLIQUE SANS SOUDURE
(JA) 継目無金属管用丸ビレット及び継目無金属管の製造方法
Abstract:
(EN) There is provided a round billet that allows for a reduction in damage to a piercing plug in a method for producing seamless metal tubes using the Mannesmann method. A round billet (5) is a round billet for seamless metal tubes processed in a seamless metal tube using the Mannesmann method, wherein a hole (6) is formed along the axis of the body. The hole (6) has an opening (6a) that opens in at least one direction of the round billet (5), and a tapered section (61) formed continuously with the opening (6a) and having an aperture that grows larger toward the opening (6a).
(FR) La présente invention concerne un rondin qui permet de réduire l'endommagement d'un mandrin de perçage utilisé lors d'un procédé de production de tubes métalliques sans soudure par utilisation du procédé Mannesmann. Selon l'invention, un rondin (5) est un rondin de tubes métalliques sans soudure transformés en un tube métallique sans soudure en utilisant le procédé Mannesmann, un trou (6) étant formé le long de l'axe du corps. Le trou (6) comporte une ouverture (6a) qui débouche dans au moins une direction du rondin (5), et une section conique (61) formée de façon continue à l'ouverture (6a) et possédant une ouverture qui va en s'élargissant en direction de l'ouverture (6a).
(JA)  マンネスマン法による継目無金属管の製造工程において、穿孔プラグの損傷を低減させることができる丸ビレットを提供する。丸ビレット(5)は、マンネスマン法により継目無金属管に加工される継目無金属管用丸ビレットであって、軸方向に沿って孔(6)が形成された本体を備える。孔(6)は、丸ビレット(5)の少なくとも一方において開口した開口部(6a)と、開口部(6a)と連続して形成され、開口部(6a)へ向かって口径が大きくなるテーパ部(61)とを有する。
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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, IS, KE, KG, KM, 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, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)