Title:
HOT-DIP GALVANIZING METHOD, METHOD OF PRODUCING ALLOYED HOT-DIP GALVANIZED STEEL SHEET USING HOT-DIP GALVANIZING METHOD, AND METHOD OF PRODUCING HOT-DIP GALVANIZED STEEL SHEET USING HOT-DIP GALVANIZING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/131562
Kind Code:
A1
Abstract:
Provided is a hot-dip galvanizing method capable of suppressing the occurrence of dross defects. The hot-dip galvanizing method of this embodiment is used for manufacturing a hot-dip galvanized steel sheet or an alloyed hot-dip galvanized steel sheet. This hot-dip galvanizing method includes a sampling step (S1), a δ1-phase dross amount determination step (S2), and an operation condition adjustment step (S3). In the sampling step, a sample is taken from a hot-dip galvanizing bath including Al. In the δ1-phase dross amount determination step, the δ1-phase dross amount in the hot-dip galvanizing bath is determined using the collected sample. In the operation condition adjustment step, the operation conditions of hot-dip galvanizing are adjusted based on the obtained amount of δ1-phase dross.
Inventors:
KONISHI TAKESHI (JP)
FURUKAWA NAOTO (JP)
FUKUHARA TAKURO (JP)
NISHIMURA HIDEKI (JP)
NISHIZAWA KOICHI (JP)
FURUKAWA NAOTO (JP)
FUKUHARA TAKURO (JP)
NISHIMURA HIDEKI (JP)
NISHIZAWA KOICHI (JP)
Application Number:
PCT/JP2018/047395
Publication Date:
July 04, 2019
Filing Date:
December 21, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23C2/00; C23C2/06; C23C2/40
Foreign References:
| JPH11350096A | 1999-12-21 | |||
| JP2010084214A | 2010-04-15 | |||
| JPH09104957A | 1997-04-22 |
Other References:
WAKAMAATSU, YOSHINORI: "Formation Process of Fe-Al Alloy Crystals in Molten Mixture of Galvanizing Dross and Small Amounts of Aluminum", JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 54, pages 784 - 793, XP055624035, Retrieved from the Internet
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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