Development and Research of the Main Features of Joining Plastics and Metals

This work examines a method of ultrasonic pressing of metal parts into a thermoplastic part using thermoplastic rivets and screws installed into the threaded holes obtained by ultrasound forming, welding metal parts through a pre-applied plastic layer, and welding metal and plastic parts through an intermediate plastic insert. It is shown that the introduction of metal fittings into plastic products using ultrasound is a progressive method of obtaining permanent joints of products from plastics and metals. It leads to an increase in labor productivity and ensures production of consistently high-quality and durable connections. The dependence of the holding force of the metal reinforcement in thermoplastic on the tightness is determined. The possibility of obtaining a metal-plastic welded joint using ultrasound is established. It was previously impossible to obtain such joints using classical methods of welding due to specific features of the metal-plastic material. The main technological modes of joining metal materials with thermoplastics are determined, namely static force, duration of ultrasonic action, waveguide oscillation amplitude.

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