Friction stir spot welding of similar and dissimilar high density polyethylene and polypropylene sheets

IF 3.9 Q2 ENGINEERING, INDUSTRIAL Advances in Industrial and Manufacturing Engineering Pub Date : 2022-05-01 DOI:10.1016/j.aime.2022.100076

Andro A.E. Sidhom, Soheir A.R. Naga, A.M. Kamal

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引用次数: 6

Abstract

Development and modernization in joining and welding techniques of plastic materials have attracted much attention in the field of scientific research and industry. Friction stir welding and friction stir spot welding, nowadays, have gained a significant advantage over other joining techniques due to the ease of operation, with no need for any adhesives or external heaters, and the use of non-consumable tools. In this research, the friction stir spot welding process of similar and dissimilar polymeric materials (polypropylene and high density polyethylene) was investigated experimentally. The effect of tool rotational speed and dwell time on the lap shear strength was studied, while the tool plunging rate, plunging depth, and tool geometry were kept constant during all tests.

The welding of dissimilar polypropylene to high density polyethylene was successfully performed within the range of 1400–3500 rpm rotational speeds; however, it was unsuccessful with 800 rpm.

Moreover, the friction stir spot welding of similar polyethylene and polypropylene was studied, and the optimum welding conditions were 3500 rpm with a dwell time of 40 s, and 800 rpm with a dwell time of 120 s for polypropylene and polyethylene respectively.

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同类或异类高密度聚乙烯、聚丙烯片材的搅拌摩擦点焊

塑料材料的连接和焊接技术的发展和现代化已经引起了科研和工业领域的广泛关注。搅拌摩擦焊和搅拌摩擦点焊，如今，由于易于操作，不需要任何粘合剂或外部加热器，以及使用非消耗性工具，已经获得了比其他连接技术显著的优势。本研究对相似和不同聚合物材料(聚丙烯和高密度聚乙烯)的搅拌摩擦点焊工艺进行了实验研究。研究了刀具转速和停留时间对搭接剪切强度的影响，所有试验均保持刀具切入速度、切入深度和刀具几何形状不变。在1400 ~ 3500rpm转速范围内，成功地完成了异种聚丙烯与高密度聚乙烯的焊接;然而，它在800转时失败了。此外，对相似材料聚乙烯和聚丙烯的搅拌摩擦点焊进行了研究，聚丙烯和聚乙烯的最佳焊接条件分别为3500转/分钟、停留时间40 s和800转/分钟、停留时间120 s。

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