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Abstract：
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In order to solve the problem of optimal arrangement for welding spots in hot stamping process of A-pillar patch plate for boron steel, the analysis model of hot stamping for A-pillar patch plate of boron steel was established by the thermal-mechanical coupling method, and the analysis of hot stamping process for patch plate was realized by defining the welding spot elements between main plate and patch plate. The results show that during the forming process, the thickness of plate material in patch area is larger than that of the other areas, which results in the temperature of patch area being always higher than that of the other areas, and the effective cooling of patch area is a necessary condition to ensure the performance of parts. Compared with the hot stamping process of single-layer plate, the areas around the welding spots in patch plate are easy to fracture during the hot stamping process. After the optimal arrangement of welding spots, the thinning rate of the original fracture area reduces from 34% to 6%, only one piece cracks after processing fifty pieces, and the qualified rate is 98%. For the hot stamping process of patch plate, it is necessary to consider the optimal arrangement of welding spots to reduce the forming defects around the welding spots.
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Funds：
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国家科技重大专项（2018ZX04023-002）
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AuthorIntro：
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李彦波（1970-），男，学士，正高级工程师，E-mail：liyanbo@lygf.com
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Reference：
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