2020年11月
Combined process of hot stamping and mechanical joining for producing ultra-high strength steel patchwork components
Journal of Manufacturing Processes
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- 巻
- 59
- 号
- 開始ページ
- 444
- 終了ページ
- 455
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jmapro.2020.10.025
A combined process of hot stamping and mechanical joining for producing ultra-high strength steel patchwork components was developed. The main blank and patch were uniformly heated side by side without overlapping in a furnace, and then, the overlapped main blank and patch were hot-stamped. An appropriate layer of intermetallic compounds was generated on the surface of the patchwork part by uniform heating. The main blank locally came in the space of the die step due to buckling, and interlocks for joining the main blank and patch were created. To increase the amount of interlock, both edges of the main blank are fixed with the stoppers in the latter stage of forming, and then, the main blank is compressed in the planar direction with the punch and die. For a length difference for main blank of 16 mm and a space length of die step of 5.1 mm, the gap between the main blank and patch was almost zero, the main blank and patch were successfully laser-welded, and the laser-welded patchwork part had sufficient collapse load and punch stroke. Tapered and zinc-coated patchwork parts were successfully produced. Another mechanical joining process using a punched patch was developed.
- リンク情報
- ID情報
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- DOI : 10.1016/j.jmapro.2020.10.025
- ISSN : 1526-6125
- SCOPUS ID : 85092513782