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1. WO2020110660 - ROLL OUTER LAYER MATERIAL TO BE HOT-ROLLED, AND COMPOSITE ROLL TO BE HOT-ROLLED

Publication Number WO/2020/110660
Publication Date 04.06.2020
International Application No. PCT/JP2019/043844
International Filing Date 08.11.2019
IPC
C22C 37/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
37Cast-iron alloys
B21B 27/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls; Lubricating, cooling or heating rolls while in use
B22D 13/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
13Centrifugal casting; Casting by using centrifugal force
02of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
C21D 5/00 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
5Heat treatment of cast-iron
CPC
B21B 27/00
BPERFORMING OPERATIONS; TRANSPORTING
21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
BROLLING OF METAL
27Rolls, ; roll alloys or roll fabrication
B22D 13/02
BPERFORMING OPERATIONS; TRANSPORTING
22CASTING; POWDER METALLURGY
DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
13Centrifugal casting; Casting by using centrifugal force
02of elongated solid or hollow bodies, e.g. pipes, in moulds rotating around their longitudinal axis
C21D 5/00
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
5Heat treatments of cast-iron
C22C 37/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
37Cast-iron alloys
Applicants
  • JFEスチール株式会社 JFE STEEL CORPORATION [JP]/[JP]
Inventors
  • 岩田 直道 IWATA Naomichi
  • 鈴木 健史 SUZUKI Takeshi
  • 升光 智久 MASUMITSU Tomohisa
Agents
  • 熊坂 晃 KUMASAKA Akira
  • 森 和弘 MORI Kazuhiro
  • 磯村 哲朗 ISOMURA Tetsuo
  • 坂井 哲也 SAKAI Tetsuya
Priority Data
2018-22199828.11.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ROLL OUTER LAYER MATERIAL TO BE HOT-ROLLED, AND COMPOSITE ROLL TO BE HOT-ROLLED
(FR) MATÉRIAU DE COUCHE EXTERNE DE ROULEAU DEVANT ÊTRE LAMINÉ À CHAUD, ET ROULEAU COMPOSITE DEVANT ÊTRE LAMINÉ À CHAUD
(JA) 熱間圧延用ロール外層材および熱間圧延用複合ロール
Abstract
(EN)
Provided are a roll outer layer material to be hot-rolled and a composite roll to be hot-rolled, each of which has abrasion resistance/fatigue resistance equivalent to or better than the conventional ones and has reduced porosity and porous shrinkage cavities. A roll outer layer material to be hot-rolled, which has a composition containing, in % by mass, 1.6 to 2.5% of C, 0.2 to 1.5% of Si, 0.2 to 1.6% of Mn, 4.5 to 7.0% of Cr, 1.0 to 5.0% of Mo, 4.0 to 6.0% of V and 0.5 to 2.5% of Nb, also containing N and O in a total amount of 100 to 400 ppm by mass, with the remainder made up by Fe and unavoidable impurities.
(FR)
L'invention concerne un matériau de couche externe de rouleau devant être laminé à chaud et un rouleau composite devant être laminé à chaud, dont chacun a une résistance à l'abrasion/résistance à la fatigue équivalente à ou meilleure que celle des matériaux et rouleaux classiques et a une porosité et des cavités de retrait poreuses réduites. À cet effet, l'invention porte sur un matériau de couche externe de rouleau devant être laminé à chaud, lequel matériau a une composition contenant, en % en masse, de 1,6 à 2,5% de C, de 0,2 à 1,5% de Si, de 0,2 à 1,6% de Mn, de 4,5 à 7,0 % de Cr, de 1,0 à 5,0% de Mo, de 4,0 à 6,0% de V et de 0,5 à 2,5% de Nb, et lequel contient également de N et de O dans une quantité totale de 100 à 400 ppm en masse, le reste étant constitué par du Fe et des impuretés inévitables.
(JA)
従来と同等以上の耐摩耗性・耐疲労性を有し、且つ、ポロシティやザク巣を軽減させた、熱間圧延用ロール外層材および熱間圧延用複合ロールを提供すること。 質量%で、C:1.6~2.5%、Si:0.2~1.5%、Mn:0.2~1.6%、Cr:4.5~7.0%、Mo:1.0~5.0%、V:4.0~6.0%、Nb:0.5~2.5%を含有し、且つ、NとOの合計が100~400質量ppmであり、残部Feおよび不可避的不純物からなる組成を有する熱間圧延用ロール外層材。
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