Abstract:
The present invention relates to a method for the manufacture of a hot-dip coated steel sheet coated with a zinc or an aluminum based coating and this hot dip coated steel sheet.
Abstract:
The present invention relates to a method for the manufacture of a galvannealed steel sheet comprising the provision of a specific steel sheet, a recrystallization annealing, a hot-dip galvanizing and an alloying treatment; the galvannealed steel sheet and the use of said galvannealed steel sheet.
Abstract:
The present invention relates to a method for the manufacture of a hot-dip coated steel sheet coated with a zinc or an aluminum based coating comprising the provision of a specific steel sheet, a recrystallization annealing and a hot-dip coating; the hot dip coated steel sheet and the use of said hot-dip coated steel sheet.
Abstract:
The invention deals with a process for manufacturing a hot-dip galvanized or galvannealed steel sheet having a TRIP microstructure, said process comprising the steps consisting in: - providing a steel sheet whose composition comprises, by weight: 0.01 ≤ C ≤ 0.22%, 0.50 ≤ Mn ≤ 2.0%, 0.2 ≤ Si ≤ 2.0%, 0.005 ≤ Al ≤ 2.0%, Mo
Abstract translation:本发明涉及制造具有TRIP微观结构的热镀锌或合金化热镀锌钢板的方法,所述方法包括以下步骤: - 提供一种钢板,其组成包含:0.01 = C = 0.22%,0.50 = Mn = 2.0%,0.2 = Si = 2.0%,0.005 = Al = 2.0%,Mo <1.0%,Cr = 1.0%,P <0.02%,Ti = 0.20%,V = 0.40%,Ni = 1.0% Nb = 0.20%,组成为铁的余量和冶炼产生的不可避免的杂质,在空气与燃料比为0.80〜0.95的直接火焰炉中氧化所述钢板, 使得在钢板的表面上形成厚度为0.05〜0.2μm的氧化铁层,形成Si和/或Mn和/或Al的内部氧化物,将所述氧化钢板还原成 减少率为0.001〜0.010μm/ s,为了实现氧化铁层的还原, - 热浸镀锌所述减少 鳗鱼片形成镀锌钢板,并且任选地对所述热浸镀钢板进行合金化处理以形成合金化热浸镀锌钢板。
Abstract:
Cette tôle comprend un substrat (3) en acier dont au moins une face (5) est revêtue par un revêtement métallique (7) déposé par trempe du substrat (3) dans un bain et essorage, le revêtement comprenant entre 0,2 et 0,7% en poids d'Al, le reste du revêtement métallique (7) étant du Zn, des impuretés inévitables et éventuellement un ou plusieurs éléments additionnels choisis parmi Si, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Zr ou Bi. La teneur en poids de chaque élément additionnel dans le revêtement métallique (7) est inférieure à 0,3%, la surface extérieure du revêtement métallique (7) présente une ondulation Wa 0,8 , avant éventuelle opération de skin-pass, inférieure ou égale à 0,55µm.
Abstract:
The invention deals with a hot-dip galvanized or galvannealed steel sheet wherein, the composition of the steel sheet comprises, by weight: 0.01 ≤ C ≤ 0.22%, 0.50 ≤ Mn ≤ 2.0%, 0.2 ≤ Si ≤ 3.0%, 0.005 ≤ Al ≤ 2.0%, Mo
Abstract:
The invention relates to a method for the manufacture of a steel sheet, in a device comprising a pre-heating section, a heating section having a maximal heating rate and a soaking section comprising a calibrating step, a recrystallization annealing and a soaking and a coating step. The calibration step permits to define a lower dew point permitting to achieve a predefined quality target.
Abstract:
The invention relates to a method for the manufacture of a steel sheet, in a device comprising a pre-heating section, a heating section having a maximal heating rate and a soaking section comprising a calibrating step, a recrystallization annealing and a soaking and a coating step. The calibration step permits to define a lower dew point permitting to achieve a predefined quality target.