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<p>This experimental study investigates the influence of sheet temperature and punch speed on blanking characteristics for aluminum alloy EN AW-5754, zinc and tin alloys, stainless steel 1.4301, press-hardened steel 22MnB5, and deep drawing grade DC06. Blanking experiments were conducted on a mechanical press. Circular blanks of 20&#xa0;mm diameter with 5&#xa0;% clearance were blanked with varied punch speed (0.1&#xa0;m/s and 0.6–0.7&#xa0;m/s depending on the sheet thickness) and varied initial sheet temperature (room-temperature, heated 50-80&#xa0;°C, and cooled 0-(-30)&#xa0;°C). The maximum blanking force, blanking work, fracture shear stress, and the quality of the blanked edge were assessed. Experiments reveal that the sheet temperature has a strong effect on the blanking force. In the tested range, the punch speed primarily affects fracture initiation in steels, but has a negligible impact on non-ferrous alloys.</p>

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Experimental study on the influence of sheet temperature and punch speed during blanking of various sheet metal materials

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月23日

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  • Katja Martinitz,
  • Luisa Schottstedt,
  • Martin F.-X. Wagner,
  • Wolfram Volk,
  • Christoph Hartmann

摘要

This experimental study investigates the influence of sheet temperature and punch speed on blanking characteristics for aluminum alloy EN AW-5754, zinc and tin alloys, stainless steel 1.4301, press-hardened steel 22MnB5, and deep drawing grade DC06. Blanking experiments were conducted on a mechanical press. Circular blanks of 20 mm diameter with 5 % clearance were blanked with varied punch speed (0.1 m/s and 0.6–0.7 m/s depending on the sheet thickness) and varied initial sheet temperature (room-temperature, heated 50-80 °C, and cooled 0-(-30) °C). The maximum blanking force, blanking work, fracture shear stress, and the quality of the blanked edge were assessed. Experiments reveal that the sheet temperature has a strong effect on the blanking force. In the tested range, the punch speed primarily affects fracture initiation in steels, but has a negligible impact on non-ferrous alloys.