发明公开
EP3070187A4 VEHICLE COMPONENT AND VEHICLE COMPONENT MANUFACTURING METHOD 审中-公开
FAHRZEUGKOMPONENTE UND FAHRZEUGKOMPONENTENHERSTELLUNGSVERFAHREN

VEHICLE COMPONENT AND VEHICLE COMPONENT MANUFACTURING METHOD
摘要:
[Object] There are provided automobile parts and a method for manufacturing the automobile parts. The automobile parts have an excellent corrosion resistance after coated with a electrodeposition paint with smaller thickness, improve formability and productivity in hot pressing, and also improve chemical conversion treatability after hot press-forming. [Solution] An automobile part according to the present invention includes: a formed steel sheet having an intermetallic compound layer formed on a surface of the steel sheet, the intermetallic compound layer being formed of Al-Fe intermetallic compound having a thickness of 10 µm or more and 50 µm or less, the intermetallic compound layer including a diffusion layer positioned in closest proximity to the steel sheet, the diffusion layer having a thickness of 10 µm or less; a surface coating layer provided on a surface of the intermetallic compound layer, the surface coating layer including a coating containing ZnO and a zinc phosphate coating and having a surface roughness of 3 µm or more and 20 µm or less as a maximum profile height Rt in accordance with JIS B0601 (2001); and an electrodeposition paint film provided on a surface of the surface coating layer and having a thickness of 6 µm or more and less than 15 µm.
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