公开(公告)号：WO1995000675A1

公开(公告)日：1995-01-05

申请号：PCT/JP1994001017

申请日：1994-06-24

Applicant: KAWASAKI STEEL CORPORATION ,  ISOBE, Makoto ,  FUJIBAYASHI, Nobue ,  KYONO, Kazuaki ,  TOTSUKA, Nobuo ,  MORITO, Nobuyuki

Inventor： KAWASAKI STEEL CORPORATION

IPC: C23C02/02

CPC classification number: C23C2/02

Abstract: A method of hot-dip-zinc-plating a Si, Mn or Cr-containing high-strength and high-tension steel plate as a basis steel plate reduced in unplated portions, so as to produce a hot dip zinc-plated steel plate or a hot dip alloyed zinc-plated steel plate, characterized in that the method is capable of minimizing the complication of a process and a decrease in the productivity and producing at a low cost high-quality hot dip zinc-plated steel plates. The present invention can be effected by recrystallization annealing in a continuous annealing equipment a cold rolled steel plate containing at least one of not less than 0.1 wt% and not more than 2.0 wt% of Si, not less than 0.5 wt% and not more than 2.0 wt% of Mn and not less than 0.1 wt% and not more than 2.0 wt% of Cr, and not more than 0.2 wt% of P as necessary; cooling the annealed product; removing a concentrated layer of steel components in a steel plate surface by polishing, or pickling, or a combination of polishing and pickling; and thermally reducing the steel plate in continuous hot dip zinc plating equipment at not less than 650 DEG C and not more than a recrystallization temperature, whereby the hot dip zinc plating, or the top plating and/or alloying, or, additionally, the post-alloying top plating of the steel plate is done.

Abstract translation: 以不含镀层的方式将作为基板钢的Si，Mn或Cr的高强度和高强度钢板进行热浸镀锌的方法，制成热浸镀锌钢板或 一种热浸合金化镀锌钢板，其特征在于，该方法能够最小化工艺的复杂性和生产率的降低，并且以低成本生产优质的热浸镀锌钢板。 本发明可以通过在连续退火设备中进行再结晶退火，该冷轧钢板含有不少于0.1重量％且不超过2.0重量％的Si，不小于0.5重量％且不大于 2.0重量％的Mn和不小于0.1重量％且不大于2.0重量％的Cr，并且根据需要不大于0.2重量％的P; 冷却退火产品; 通过抛光或酸洗或抛光和酸洗的组合来除去钢板表面中的钢组分的浓缩层; 并在不低于650℃并且不大于再结晶温度的条件下将连续热浸镀锌设备中的钢板热还原，由此进行热浸锌镀层，或顶部镀层和/或合金化，或另外，将柱 完成钢板的合金顶板。

公开(公告)号：WO1998030729A1

公开(公告)日：1998-07-16

申请号：PCT/JP1997000045

申请日：1997-01-13

Applicant: KAWASAKI STEEL CORPORATION ,  FUJIBAYASHI, Nobue ,  KYONO, Kazuaki ,  MIYAOKA, Motonori ,  TOTSUKA, Nobuo

Inventor： KAWASAKI STEEL CORPORATION

IPC: C23C02/00

CPC classification number: C23C2/02 ,  C23C2/26 ,  C23G1/08 ,  C25F1/00

Abstract: A hot dip galvanized steel sheet for use as steel sheets for automobiles, an alloyed hot dip galvanized steel sheet, and a process for producing the same. The galvanized steel sheet is reduced in the defects derived from failed plating and excellent in contact plating adhesion, and is characterized by having oxides of elements, more oxidizable than iron just under the plating, the oxides being formed during hot rolling. According to the production process, the temperature of coiling at the time of hot rolling is 600 DEG C or above, the cooling is carried out at a low rate, and the oxides are left intact also in the subsequent steps.

Abstract translation: 用作汽车用钢板的热浸镀锌钢板，合金化热浸镀锌钢板及其制造方法。 镀锌钢板由于电镀失败而导致的缺陷减少，接触电镀附着性优异，其特征在于，具有比正在电镀下的铁更可氧化的元素氧化物，在热轧时形成氧化物。 根据制造方法，热轧时的卷取温度为600℃以上，冷却以低速进行，氧化物也在后续工序中保持完好。