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1. WO2005061750 - METHOD FOR PRODUCING ALLOYED ZINC HOT DIP GALVANIZED STEEL SHEET

Publication Number WO/2005/061750
Publication Date 07.07.2005
International Application No. PCT/JP2004/019280
International Filing Date 16.12.2004
IPC
C23C 2/06 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
04characterised by the coating material
06Zinc or cadmium or alloys based thereon
C23C 2/28 2006.1
CCHEMISTRY; METALLURGY
23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
2Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
26After-treatment
28Thermal after-treatment, e.g. treatment in oil bath
CPC
B32B 15/013
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
15Layered products comprising ; a layer of; metal
01all layers being exclusively metallic
013one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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 38/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
06containing aluminium
C22C 38/08
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
08containing nickel
Applicants
  • JFEスチール株式会社 JFE STEEL CORPORATION [JP]/[JP] (AllExceptUS)
  • 松田 広志 MATSUDA, Hiroshi [JP]/[JP] (UsOnly)
  • 平 章一郎 TAIRA, Shoichiro [JP]/[JP] (UsOnly)
  • 小野 圭介 ONO, Keisuke [JP]/[JP] (UsOnly)
  • 占部 俊明 URABE, Toshiaki [JP]/[JP] (UsOnly)
  • 長滝 康伸 NAGATAKI, Yasunobu [JP]/[JP] (UsOnly)
  • 田中 靖 TANAKA, Yasushi [JP]/[JP] (UsOnly)
  • 櫻井 理孝 SAKURAI, Michitaka [JP]/[JP] (UsOnly)
  • 杉本 芳春 SUGIMOTO, Yoshiharu [JP]/[JP] (UsOnly)
Inventors
  • 松田 広志 MATSUDA, Hiroshi
  • 平 章一郎 TAIRA, Shoichiro
  • 小野 圭介 ONO, Keisuke
  • 占部 俊明 URABE, Toshiaki
  • 長滝 康伸 NAGATAKI, Yasunobu
  • 田中 靖 TANAKA, Yasushi
  • 櫻井 理孝 SAKURAI, Michitaka
  • 杉本 芳春 SUGIMOTO, Yoshiharu
Agents
  • 落合 憲一郎 OCHIAI, Kenichiro
Priority Data
2003-42323319.12.2003JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) METHOD FOR PRODUCING ALLOYED ZINC HOT DIP GALVANIZED STEEL SHEET
(FR) PROCEDE PERMETTANT DE PRODUIRE UNE TOLE EN ACIER GALVANISE A CHAUD AU ZINC ALLIE
(JA) 合金化溶融亜鉛めっき鋼板の製造方法
Abstract
(EN) A method for producing an alloyed zinc hot dip galvanized steel sheet, which has a process of providing a zinc hot dip galvanized steel sheet, a process of subjecting the zinc hot dip galvanized steel sheet to an alloying treatment, and a process of controlling the time and temperature for the alloying treatment according to the contents of Si and Al, wherein the above zinc hot dip galvanized steel sheet has a chemical composition, in mass %, that C: 0.05 to 0.30 %, Si: 0.01 to 2.0 %, Mn: 0.08 to 3.0 %, P: 0.003 to 0.1 %, S: 0 to 0.07 %, Al: 0.01 to 2.5 %, N: 0 to 0.007 %, and the balance: Fe and inevitable impurities, and the time and temperature for the alloying treatment are controlled according to the formula: Si + Al ≥ 1.5 x 10-7 x t0.75 x (T - 465)3 + 0.117 where t represents the total time (sec) for which the steel sheet is held at a temperature of 465°C or higher when the plating layer on the steel sheet is alloyed, and T represents an average temperature T (°C) during the total time (sec) for which the steel sheet is held at a temperature of 465°C or higher when the plating layer on the steel sheet is alloyed.
(FR) Cette invention concerne un procédé permettant de produire une tôle en acier galvanisé à chaud au zinc allié, lequel procédé consiste à prendre une tôle en acier galvanisé à chaud au zinc, à soumettre cette tôle à un traitement d'alliage, et à réguler la durée et la température du traitement d'alliage en fonction de la teneur en Si et en Al. La tôle en acier galvanisé à chaud au zinc présente la composition chimique suivante exprimée en pourcentage massique : C : de 0,05 à 0,30 %, Si: de 0,01 à 2.0 %, Mn: de 0,08 à 3.0 %, P: de 0,003 à 0,1 %, S: de 0 à 0,07 %, Al: de 0,01 à 2.5 %, N: de 0 à 0,007 %, et le reste: Fe ainsi que des impuretés inévitables. De plus la durée et la température du traitement d'alliage sont régulées d'après la formule suivante: Si + Al = 1,5 x 10-7 x t0,75 x (T - 465)3 + 0,117, dans cette formule, t représente la durée totale (sec) durant laquelle la tôle en acier est maintenue à une température égale ou supérieure à 465 °C et durant laquelle la couche de plaquage sur la tôle en acier est alliée, et T représente une température moyenne T (°C) pendant la durée totale (sec) durant laquelle la tôle en acier est maintenue à une température égale ou supérieure à 465 °C et durant laquelle la couche de plaquage sur la tôle en acier est alliée.
(JA) 合金化溶融亜鉛めっき鋼板の製造方法は、溶融亜鉛めっき鋼板を準備する工程と、前記溶融亜鉛めっき鋼板を合金化処理する工程と、Si及びAlの含有量に応じて合金化処理の処理時間と処理温度を制御する工程とを有する。前記溶融亜鉛めっき鋼板は、質量%で、C:0.05~0.30%、Si: 0.01~2.0%,Mn:0.08~3.0%,P:0.003~0.1%,S:0~0.07%,Al:0.01~2.5%,N:0~0.007%、残部がFeおよび不可避不純物からなる。合金化処理の処理時間と処理温度は、Si+Al ≧ 1.5x10-7 x t0.75 x ( T - 465 )3 + 0.117、の式に基づいて制御される。tは、鋼板上のめっき層を合金化する際に465℃以上に保持される全時間t(秒)、Tは、鋼板上のめっき層を合金化する際に465℃以上に保持される全時間t(秒)における平均温度T(℃)である。
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