Title:
CUT-PROCESSED PRODUCT AND GUARDRAIL
Document Type and Number:
WIPO Patent Application WO/2024/070811
Kind Code:
A1
Abstract:
Provided are: a cut-processed product of a Zn-Al-Mg-based plated steel material comprising a base steel material and a Zn-Al-Mg-based plating layer coated on the surface of the base steel material, in which a cut edge surface of the cut-processed product is covered by the Zn-Al-Mg-based plating layer at a cut edge surface covering ratio of 50 to 99%, each of a non-plated surface of the base steel material and the Zn-Al-Mg-based plating layer around the non-plated surface is covered with a repairing coating film in the cut edge surface of the cut-processed product, the initial coating film resistance value in the repairing coating film is 10 to 1000 Ω/cm2, the coating film resistance value after the immersion of the cut-processed product in 5%-by-mass salt water for 3 hours is 5 to 50 Ω/cm2, and the thickness of the repairing coating film is 10 μm or more; and a guardrail in which the cut-processed product is used.
Inventors:
HAYASHIDA TAKAHIDE (JP)
Application Number:
PCT/JP2023/033915
Publication Date:
April 04, 2024
Filing Date:
September 19, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C23F11/00; B23D15/00; C23C2/06; C23C2/26; C23C28/00; E01F15/04
Domestic Patent References:
| WO2022139294A1 | 2022-06-30 |
Foreign References:
| JP2005314501A | 2005-11-10 | |||
| JP2002317492A | 2002-10-31 | |||
| JP2017209727A | 2017-11-30 | |||
| JP2018075600A | 2018-05-17 | |||
| JP2020032437A | 2020-03-05 |
Attorney, Agent or Firm:
TAIYO, NAKAJIMA & KATO (JP)
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