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1. (WO2018079781) WIRE ROD AND MANUFACTURING METHOD THEREFOR
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Pub. No.: WO/2018/079781 International Application No.: PCT/JP2017/039166
Publication Date: 03.05.2018 International Filing Date: 30.10.2017
IPC:
C22C 38/18 (2006.01) ,C22C 38/54 (2006.01) ,C21D 8/06 (2006.01) ,C21D 9/52 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
54
with boron
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
06
during manufacturing of rods or wires
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
52
for wires; for strips
Applicants:
新日鐵住金株式会社 NIPPON STEEL & SUMITOMO METAL CORPORATION [JP/JP]; 東京都千代田区丸の内二丁目6番1号 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071, JP
Inventors:
坂本 昌 SAKAMOTO Masashi; JP
児玉 順一 KODAMA Junichi; JP
齋藤 圭佑 SAITO Keisuke; JP
Agent:
棚井 澄雄 TANAI Sumio; JP
寺本 光生 TERAMOTO Mitsuo; JP
勝俣 智夫 KATSUMATA Tomoo; JP
山口 洋 YAMAGUCHI Yoh; JP
Priority Data:
2016-21159028.10.2016JP
Title (EN) WIRE ROD AND MANUFACTURING METHOD THEREFOR
(FR) FIL MACHINE ET PROCÉDÉ POUR LE FABRIQUER
(JA) 線材およびその製造方法
Abstract:
(EN) A wire rod according to this embodiment has a predetermined chemical composition, and, in a structure observed in a center portion of a lateral cross-section of the wire rod, the area proportion of perlite is equal to or greater than 90.0%, the area proportion of pro-eutectoid cementite is equal to or less than 1.00%, the average thickness of the pro-eutectoid cementite is equal to or less than 0.25 μm, the total length of the pro-eutectoid cementite per unit area is less than 40.0 mm/mm2, the tensile strength satisfies expression (1), and the diameter is 3.0-5.5 mm. Expression (1): 1000 × C content (%) + 300 × Cr content (%) + 70 ≤ TS ≤ 1000 × C content (%) + 300 × Cr content (%) + 160
(FR) Ce mode de réalisation concerne un fil machine qui présente une composition chimique prédéterminée, et tel que : dans une structure observée dans une partie centrale d'une section transversale latérale du fil machine, la proportion surfacique de perlite est égale ou supérieure à 90,0 %, la proportion surfacique de cémentite pro-eutectoïde est égale ou inférieure à 1,00 %, l'épaisseur moyenne de la cémentite pro-eutectoïde est égale ou inférieure à 0,25 µm, la longueur totale de la cémentite pro-eutectoïde par unité de surface est inférieure à 40,0 mm/mm2, la résistance à la traction satisfait l'expression (1) et le diamètre est de 3,0 à 5,5 mm. Expression (1) : 1000 × teneur en C (%) + 300 × teneur en Cr (%) + 70 ≤ TS ≤ 1000 × teneur en C teneur (%) + 300 × teneur en Cr (%) + 160
(JA) 本実施形態に係る線材は、所定の化学組成を有し、線材の横断面の中心部で観察される組織において、パーライトの面積分率が90.0%以上であり、初析セメンタイトの面積分率が1.00%以下であり、初析セメンタイトの平均厚さが0.25μm以下であり、単位面積当たりの初析セメンタイトの総長さが40.0mm/mm未満であり、引張強度が式(1)を満たし、直径が3.0~5.5mmである。 1000×C量(%)+300×Cr量(%)+70≦TS≦1000×C量(%)+300×Cr量(%)+160・・・式(1)
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)