Methods of Ensuring the Quality of Assembly of Non-removable Joints from Dissimilar Materials

This article addresses the critical challenge of achieving high-quality surface finishing for dissimilar material joints, which is essential for aerospace, energy, and precision engineering applications. Conventional methods often fail to deliver consistent results due to material property differences. We developed an optimized magnetic-abrasive treatment (MAT) process using NdFe permanent magnets 0.6-1.2 T and composite abrasives Fe/SiC. Experimental results demonstrate that our method achieves superior surface uniformity Ra 0.6-1.0 μm with 2-3 times higher productivity compared to manual grinding. Key findings include the determination of optimal parameters B = 1.0 T, n = 460 min-1. The novelty of this work lies in the systematic optimization of MAT for dissimilar material joints and the first demonstration of industrial scalability for components up to 0.5 m². These results expand MAT applications, offering a cost-effective alternative to exist finishing methods.