Abstract
The paper presents developments contributing to the process of producing hard carbide layers, with special attention to the application on tools and dies. The quantitative impact of the steel composition and the process temperature on the kinetics of the carbide layer formation has been determined. In conventional processes of diffusion formation the phenomenon of partial decarburization of the steel has been dealt with by the introduction of controlled precarburization. Diffusion formation of carbide layers has been improved by duplex processes, which enable the formation of a case hardened layer which is harder than the core. Thus, the substrate for the hard and brittle carbide layer is improved. The development should contribute to the improvement of properties of the surface layers. The process can be applied to the manufacturing of tools and dies.
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