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1. WO2012132138 - METHOD FOR ADDING ZINC TO MOLTEN STEEL AND PROCESS FOR PRODUCING ZINC-CONTAINING STEEL

Publication Number WO/2012/132138
Publication Date 04.10.2012
International Application No. PCT/JP2011/079350
International Filing Date 19.12.2011
IPC
C21C 7/04 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
7Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/-C21C5/118
04Removing impurities by adding a treating agent
C22C 38/00 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/52 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
40with nickel
52with cobalt
CPC
C21C 7/0006
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
7Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
0006Adding metallic additives
C22C 38/00
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
C22C 38/002
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
002containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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 38/44
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
44with molybdenum or tungsten
Applicants
  • 日立金属株式会社 HITACHI METALS,LTD. [JP]/[JP] (AllExceptUS)
  • 佐藤 奈翁也 SATOH Naoya [JP]/[JP] (UsOnly)
  • 印藤 雄輝 INTOH Yuuki [JP]/[JP] (UsOnly)
  • 福島 英子 FUKUSHIMA Hideko [JP]/[JP] (UsOnly)
  • 片岡 公太 KATAOKA Kouta [JP]/[JP] (UsOnly)
  • 綾部 陽介 AYABE Yousuke [JP]/[JP] (UsOnly)
  • 谷口 徹 TANIGUCHI Toru [JP]/[JP] (UsOnly)
  • 三木 貴博 MIKI Takahiro [JP]/[JP] (UsOnly)
Inventors
  • 佐藤 奈翁也 SATOH Naoya
  • 印藤 雄輝 INTOH Yuuki
  • 福島 英子 FUKUSHIMA Hideko
  • 片岡 公太 KATAOKA Kouta
  • 綾部 陽介 AYABE Yousuke
  • 谷口 徹 TANIGUCHI Toru
  • 三木 貴博 MIKI Takahiro
Priority Data
2011-07811831.03.2011JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR ADDING ZINC TO MOLTEN STEEL AND PROCESS FOR PRODUCING ZINC-CONTAINING STEEL
(FR) PROCÉDÉ D'ADDITION DE ZINC À DE L'ACIER LIQUIDE, ET PROCÉDÉ DE PRODUCTION D'ACIER CONTENANT DU ZINC
(JA) 溶鋼への亜鉛添加方法および亜鉛添加鋼の製造方法
Abstract
(EN)
A method is provided by which it is possible to easily add zinc to a molten steel in high yield. The method for adding zinc to a molten steel comprises adding a composite oxide of Zn with Al and/or Si to a molten steel. The method for adding zinc to a molten steel may further includes adding the oxide of Ca to the molten steel. The molten steel preferably is a molten steel for a hot work tool steel. A process for producing a zinc-containing steel is also provided in which the molten steel to which zinc has been added by the method for adding zinc to a molten steel is cast. The cast zinc-containing steel preferably has a Zn content of 0.001 mass% or higher.
(FR)
L'invention concerne un procédé permettant d'ajouter facilement et efficacement du zinc à de l'acier liquide. Ledit procédé comprend l'addition d'un oxyde composite de zinc avec de l'aluminium et/ou du silicium à de l'acier liquide. Le procédé peut également comprendre l'addition d'oxyde de calcium à l'acier liquide. L'acier liquide est de préférence destiné à un outil de travail à chaud. L'invention concerne également un procédé de production d'acier contenant du zinc dans lequel de l'acier liquide auquel a été ajouté du zinc par le procédé d'addition de zinc est coulé. L'acier contenant du zinc coulé présente de préférence une teneur en zinc d'au moins 0,001 % en masse.
(JA)
 溶鋼に、歩留よくかつ簡便に亜鉛を添加できる方法を提供する。 Znと、Alおよび/またはSiとの複合酸化物を溶鋼に投入する溶鋼への亜鉛添加方法である。そして、前記の溶鋼に、Caの酸化物を投入する溶鋼への亜鉛添加方法である。溶鋼は、熱間工具鋼の溶鋼であることが好ましい。そして、これらの溶鋼への亜鉛添加方法によって亜鉛が添加された溶鋼を、鋳造する亜鉛添加鋼の製造方法である。鋳造後の亜鉛添加鋼に含まれるZnの含有量は、0.001質量%以上であることが好ましい。
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