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Research demonstrates efficient use of recycled aluminum scraps for A34-grade solder production, indicating high performance as a welding filler material.
The main stages of research on the development of technology for obtaining cast A34‑grade solder in the form of rods are presented. It is shown that, taking into account the basic patterns of structural heredity, up to 100 % of preprepared various scraps and waste can be effectively used to prepare the working alloy. The results of melting and solidification kinetics, chemical composition and microstructure analysis, mechanical testing, and density analysis showed that the A34‑grade solder obtained using the developed technological scheme fully meets the requirements of regulatory documentation. The possibility of using A34 solder as a filler material for welding plates (2 mm thick) made of aluminum alloys AK7ch (casting) and AMg5 (deformable) has been established. Argon was used as the gas shielding medium. A technological instruction for preparing A34 solder alloy has been developed. The production of A34 cast solder in the form of rods has been organized.
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Nikitin et al. (2025) studied this question.
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