Abstract:
Tin-base babbitt alloy is an essential material for industrial production as a kind of excellent sliding bearing liner material. In recent years, with the continuous emergence of large-scale, high-performance, heavy-duty machinery and equipment for industrial use, the traditional tin based babbitt alloy materials and preparation processes gradually show some drawbacks, which have been unable to meet new needs. The preparation process and composition optimization and modification of tin based babbitt alloy materials have become a research hotspot. The preparation process of tin based babbitt alloy mainly includes centrifugal casting, arc surfacing, brazing, laser cladding, in-situ microwave assisted casting, etc. The effects of different preparation processes on the composition of tin based babbitt alloy and the bonding strength of coating are analyzed; By adding strengthening elements, compounds, carbon materials, nanomaterials and other methods to optimize the composition of babbitt alloy, further improve the bonding strength of the coating. A series of research achievements have played a significant role in extending the life of bearings. In this paper, the research progress of preparation technology and composition modification of tin-base babbitt alloy is reviewed, and it is proposed that the design and development of new tin-base babbitt coating structure to improve the bonding strength and service life of tin-base babbitt alloy coating will continue to be the research focus and future development trend of scholars at home and abroad.