The issue of eutectic cementite elimination

The article presents the issue of utilizing the properties of pearlitic layers in white malleable cast iron castings after an incomplete annealing cycle. The possibilities of using these areas after hardening and nitriding treatments under conditions of intensive abrasive wear are indicated. Increasing the wear resistance of castings complements the very good properties of this construction material in terms of tensile strength, ductility, impact strength, and weldability. The fundamental aspect in the incomplete annealing process is determining the influence of significant factors deciding the dissolution time of eutectic cementite in austenite during the first stage of graphitization.THE ISSUE OF ELIMINATION OF EUTECTIC CEMENTITE OUT OF THE STRUCTURE OF WHITE CAST IRON IN THE ANNEALING PROCESS
The article presents the issue of the use of the properties of pearlitic structure malleable white cast iron GTW after incomplete annealing cycle. Indicated possibility application this case after induction hardening and nitriding treatment in intensive abrasive wear. Improvement of wear resistance of castings is the complement to very good properties of the material of construction for the tensile strength, ductility, toughness and weldability. An essential aspect in the incomplete annealing process is to determine the impact of important factors determining on the time of dissolution of the eutectic cementite in austenite during the I stage of graphitization.
1. INTRODUCTION Malleable cast iron is widely used in many branches of industry, including: construction, mining, the railway industry, mainly as parts of transport and technological machines and elements of hydraulic installations. Recently, problems have arisen in the production of castings due to the nationwide economic crisis in manufacturing techniques. (…)

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