Extending the potentials of draw-forging

Extending the potentials of draw-forging
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扩大拉锻的潜力

DOI:
10.1007/s12289-022-01662-y
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发表时间:
2022
影响因子:
2.4
通讯作者:
Tekkaya
Tekkaya
中科院分区:
材料科学3区
文献类型:
--
作者:
Rakshit;Gebhard;Napierala;Kolpak;Schulze;Tekkaya

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复合材料组件结合了不同材料的优点,从而改善了产品性能,提高了资源和能源效率,拓宽了产品范围。拉深锻造是深拉和冷锻造的独特组合,其中芯材被封装在薄板金属坯料中。以前,基本的拉深锻造工艺只允许覆盖轴尖,覆盖长度受到板材最大拉深比的限制。本文通过数值和实验研究了不同的破坏类型,包括薄片撕裂、不对称封装和过渡区间隙的发展,轴向封装长度明显增加。各向异性板材的使用使拉锻复合件具有良好的形状配合,提高了结合强度。还开发了一种替代工艺路线,其中利用穿孔板部分覆盖轴的特定部分。工艺路线稳定与一个新的轮廓计数器支架,以确保高重复性。
Composite components combine the benefits of different materials, leading to improved product properties, enhanced resource- and energy efficiency and widening the product spectrum. Draw-forging is the unique combination of deep-drawing and cold forging, where a core material is encapsulated within a thin sheet metal blank. Previously, the basic draw-forging process only allowed covering of the shaft tip, and the covered length was limited by the maximum drawing ratio of the sheet. In this work, the different failure types, including tearing of the sheet, asymmetric encapsulation, and the development of a gap in the transition zone were investigated numerically and experimentally and the axial encapsulation length is increased significantly. The usage of anisotropic sheet material leads to a form fit and enhances the bond strength in draw-forged hybrid components. An alternative process route in which a pierced sheet is utilized to partially cover a specific section of a shaft was also developed. The process route was stabilized with a novel contoured counter holder to ensure high repeatability.
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