Title:
HOT-STAMPED COMPONENT HAVING HIGH COLD-BENDING PERFORMANCE AND HIGH STRENGTH, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/185754
Kind Code:
A1
Abstract:
Disclosed in the present invention are a hot-stamped component having high cold-bending performance and high strength, and a manufacturing method therefor. The method comprises: (1) manufacturing a steel plate for hot stamping; (2) preprocessing a component; (3) heat treatment, transfer and stamping of the component: placing a semi-finished product of the component into a heat treatment furnace, controlling a heat treatment temperature to be 750°C-960°C, and controlling the total time of heat treatment to be 1.5-10 min and the time for the heat treatment temperature above 880°C not to be less than 1.2 min; transferring the heat-treated semi-finished product into a mold for mold-closed stamping, and the temperature of the semi-finished product when leaving the heat treatment furnace not being lower than 900°C; when the thickness of the steel plate forming the component is less than or equal to 1.5 mm, controlling transfer time to be 11 s-20 s, and when the thickness of the steel plate forming the component is greater than 1.5 mm, controlling the transfer time to be 13 s-25 s; and (4) stamping posttreatment: performing thermal insulation homogenization on the component, then performing machining to obtain a finished product. Accordingly, a component having a product of strength and elongation of ≥10 GPa•%, a cold-bending angle of ≥60 degrees, and a three-point bending maximum load of ≥13 KN can be prepared by using the method.
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Inventors:
TAN NING (CN)
LIU HAO (CN)
JIN XINYAN (CN)
MA XUEDAN (CN)
LIU HAO (CN)
JIN XINYAN (CN)
MA XUEDAN (CN)
Application Number:
PCT/CN2023/084138
Publication Date:
October 05, 2023
Filing Date:
March 27, 2023
Export Citation:
Assignee:
BAOSHAN IRON & STEEL (CN)
International Classes:
C23C2/12
Foreign References:
| CN109518114A | 2019-03-26 | |||
| CN106191673A | 2016-12-07 | |||
| CN113957337A | 2022-01-21 | |||
| CN113106339A | 2021-07-13 | |||
| US20140030544A1 | 2014-01-30 | |||
| US20150361532A1 | 2015-12-17 |
Other References:
"Hot Working Technology", 31 January 2021, ISSN: 1001-3814, article ZHOU LIANPU; ZHU CHUNDONG; GUO YUHANG; MA RONGFEI: "Study on Heat Treatment Technology of BR1500HS Ultra-high Strength Steel for High-altitude Working Arm", pages: 128 - 131, XP009549957, DOI: 10.14158/j.cnki.1001-3814.20201900
Attorney, Agent or Firm:
SHANGHAI PATENT & TRADEMARK LAW OFFICE , LLC (CN)
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