HOT PRESS FORMED PARTS HAVING EXCELLENT POWDERING RESISTANCE DURING HOT PRESS FORMING, AND METHOD FOR MANUFACTURING SAME

Provided are: hot press-formed (HPF) member having excellent powdering resistance during hot press forming; and a method for manufacturing same. The present invention relates to an HPF member having excellent powdering resistance during hot press forming, the HPF member having a hot-dip coating laye...

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Bibliographische Detailangaben
Hauptverfasser:	SOHN, Il-Ryoung, BAE, Dae-Chul, KIM, Heung-Yun
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Provided are: hot press-formed (HPF) member having excellent powdering resistance during hot press forming; and a method for manufacturing same. The present invention relates to an HPF member having excellent powdering resistance during hot press forming, the HPF member having a hot-dip coating layer containing Al on a surface of a base steel sheet, wherein the base steel sheet includes, based on wt%, 0.18-0.25% of C, 0.1-1.0% of Si, 0.9-1.5% of Mn, 0.03% or less of P, 0.01% or less of S, 0.01-0.05% of Al, 0.05-0.5% of Cr, 0.01-0.05% of Ti, 0.001-0.005% of B, 0.009% or less of N, the balance Fe, and the other impurities; the hot-dip coating layer comprises a soft diffusion layer and a hard alloy layer; the alloy layer has a Tau phase in the range of 10-30%, in terms of area percent; and the Tau phase contains 10% or more of Si and 0.2% or more of Cr, on the basis of wt% of the Tau phase itself, such that the alloy layer has a thickness of 35 µm or less.