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1. WO2019047587 - HOT CONTINUOUS ROLLED STEEL COIL FOR HIGH COLLAPSE STRENGTH SEW OIL CASING AND PRODUCTION METHOD THEREFOR

Publication Number WO/2019/047587
Publication Date 14.03.2019
International Application No. PCT/CN2018/091943
International Filing Date 20.06.2018
IPC
C22C 38/28 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
28with titanium or zirconium
C21D 1/18 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
C21D 8/10 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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
10during manufacturing of tubular bodies
CPC
C21D 8/0226
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
8Modifying the physical properties by deformation combined with, or followed by, heat treatment
02during manufacturing of plates or strips
0221characterised by the working steps
0226Hot rolling
C22C 38/02
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
02containing silicon
C22C 38/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
04containing manganese
C22C 38/28
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
28with titanium or zirconium
Applicants
  • 攀钢集团攀枝花钢铁研究院有限公司 PANGANG GROUP PANZHIHUA IRON & STEEL RESEARCH INSTITUTE CO., LTD. [CN]/[CN]
Inventors
  • 张开华 ZHANG, Kaihua
  • 叶晓瑜 YE, Xiaoyu
  • 熊雪刚 XIONG, Xuegang
  • 王羿 WANG, Yi
Agents
  • 成都虹桥专利事务所(普通合伙)  CHENGDU HONGQIAO PATENT LAW OFFICE
Priority Data
201710812899.011.09.2017CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) HOT CONTINUOUS ROLLED STEEL COIL FOR HIGH COLLAPSE STRENGTH SEW OIL CASING AND PRODUCTION METHOD THEREFOR
(FR) BOBINE D'ACIER LAMINÉE CONTINUE À CHAUD DESTINÉE À UN CARTER D'HUILE SEW À RÉSISTANCE À L'ÉCRASEMENT ÉLEVÉE ET PROCÉDÉ DE PRODUCTION S'Y RAPPORTANT
(ZH) 高抗挤SEW石油套管用热连轧钢卷及其生产方法
Abstract
(EN)
A hot continuous rolled steel coil for a high collapse strength SEW oil casing and a production method therefor. By reducing expensive alloying elements Mo and V in the hot continuous rolled steel coil and strictly controlling the content components of chemical elements such as Cr, Mn, Ti and the like, the production cost of the hot continuous rolled steel coil is reduced. The production method for the hot continuous rolled steel coil comprises: using continuous casting slabs as initial blanks; carrying out 5-7 passes of refined grain tough rolling under a temperature-controlled heating condition to form an intermediate slab; carrying out at least 4 passes of finish rolling on the intermediate slab; and finally carrying out cooling and coiling to complete the production and processing, thus achieving the purpose of controlling the initial yield strength and the initial tensile strength of the steel coil.
(FR)
L'invention concerne une bobine d'acier laminée continue à chaud destinée à un carter d'huile SEW à résistance à l'écrasement élevée et un procédé de production s'y rapportant. Grâce à la réduction des éléments d'alliage onéreux Mo et V dans la bobine d'acier laminée continue à chaud et au réglage strict des constituants de contenu d'éléments chimiques tels que Cr, Mn, Ti et similaires, le coût de production de la bobine d'acier laminée continue à chaud est réduit. Le procédé de production destiné à la bobine d'acier laminée continue à chaud comprend : l'utilisation de brames de coulée continue comme ébauches initiales ; la réalisation de 5 à 7 passes de laminage résistant à grains affinés dans une condition de chauffage à température réglée en vue de former une brame intermédiaire ; la réalisation d'au moins 4 passes de laminage de finition sur la brame intermédiaire ; et enfin la réalisation d'un refroidissement et d'un bobinage en vue de terminer la production et le traitement, ce qui permet de régler la limite d'élasticité initiale et la résistance à la traction initiale de la bobine d'acier.
(ZH)
一种高抗挤SEW石油套管用热连轧钢卷及其生产方法。该热连轧钢卷通过减少其中的昂贵合金元素Mo、V,并严格控制Cr、Mn以及Ti等化学元素的含量组分来降低生产成本。其生产方法以连铸板坯为初始坯料,在控温加热条件下经过5-7个道次的细化晶粒粗轧构成中间坯,再将中间坯进行至少4个道次的精轧,最后进行冷却卷取来完成生产加工工作,达到控制其初始屈服强度和初始抗拉强度的目的。
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Latest bibliographic data on file with the International Bureau