High-performance thermoformed component provided with coating, and manufacturing method therefor

US12163203B2 · kind B2 · utility

Assignee

• BAOSHAN IRON & STEEL CO., LTD. · CN

Inventors

• Ning Tan · Longbeilingcun, CN
• Junxiang Liu · Shanghai, CN
• Caigen Huang · Shanghai, CN
• Lei Jiang · Longbeilingcun, CN
• Chao Wang · Taoyuan, TW

Key dates

• Filing date: Nov 27, 2020
• Grant date: Dec 10, 2024
• Expiry date: Dec 5, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C23C28/345
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A high-performance thermoformed component provided with a coating, and a manufacturing method therefor. The thermoformed component comprises a substrate and a coating thereon. The substrate comprises the following ingredients in percentage by weight: 0.01-0.8% of C, 0.05-1.0% of Si, 0.1-5% of Mn, 0.001-0.3% of P, 0.001-0.1% of S, 0.001-0.3% of Al, 0.001-0.5% of Ti, 0.0005-0.1% of B, 0.001-0.5% of Nb, 0.001-0.5% of V, and the remainder being Fe and other unavoidable impurities. The appearance of the thermoformed component has no color difference and no mottling. The surface oxygen content of the thermoformed component is 0.1-20 wt. %, and the ratio of the standard deviation to the average value of the surface oxygen content satisfies: 0<standard deviation of oxygen content/average value of oxygen content ≤0.3. In the manufacturing method, a coated steel plate that has undergone heat treatment, transfer processing, and hot stamping is not treated with oil.