The Influence of the Working Layer Thickness on the Quality of the Joint in Layered Castings
DOI:
https://doi.org/10.24425/afe.2026.158028Abstract
Bimetallic castings are increasingly used as engineering materials. Their versatility demonstrates the significant need for their production. Bimetals are used in the mining, quarrying, cement, construction, and energy industries. Their advantages stem from the complementary nature of their various properties. For example, the combination of abrasive wear resistance and impact resistance allows for increased durability of machine components operating in extremely harsh conditions. Combining cast iron and steel allows for rapid disassembly and assembly of machine parts using welding, further increasing their popularity. The key to achieving a proper bond between two layers is carbon diffusion. For diffusion to be favorable, there must be a significant difference in carbon concentration and an adequate amount of heat to facilitate diffusion. In thick castings where the cast iron layer is several dozen millimeters thick and the carbon content exceeds 3%, the bond occurs almost spontaneously. This paper attempts to describe the effect of the amount of heat of crystallization on the quality of the bond in a bimetallic casting.
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