Permanent direct part marking for metal parts processed at high temperature

Abstract

This article introduces new options for high-temperature permanent ink marking of machine parts. As experimental materials, ferrous metals (EN X40CrMoV5-1, EN 16MnCr5, EN S355J2+N) and titanium alloys (Ti6Al4V) have been printed. The paper presents the temperature-dependence curve of Ceramic phosphors. Generally, the most commonly used pigments are based on ZrSiO4, SiC (each has a different refractive index). In our case, TiO2 and inorganic luminescent (LS) based powders was also used. The respective pigments were subjected to several technological processes. These included nitriding, carburizing and vacuum heat treatment. The printing or its effect was evaluated by LM and microhardness measurements. The new method of marking machine parts appears to be suitable for non-destructive marking of parts for applications requiring resistance to high temperatures.