| 摘要 |
PROBLEM TO BE SOLVED: To provide a plated steel sheet for hot press and a production method therefor which secure excellent corrosion resistance even with low coating weight and achieve improved productivity. SOLUTION: The plated steel sheet for hot press includes an Al plating layer applied to the surface of a steel sheet and an Fe-Al alloy layer located between the Al plating layer and the steel sheet, wherein the thickness of the Al plating layer is 3 to 10 μm, the thickness of the Fe-Al alloy layer is ≥6 μm, the total of the thickness of the Al plating layer and the thickness of the Fe-Al alloy layer is 10 to 30 μm, and the center line mean roughness Ra of the boundary between the Al plating layer and the Fe-Al alloy layer is 0.6 to 3 μm. In the production method, heating is performed within a box annealing furnace in an atmosphere containing ≥3 vol.% oxygen under the conditions satisfying temperature: 450 to 600°C, retaining temperature: 1 to 50 hr, and accumulated temperature value: 450 to 20,000°C×time. COPYRIGHT: (C)2010,JPO&INPIT |
